JP5073574B2 - Method for producing solid cosmetic - Google Patents

Description

The present invention also relates to a solid cosmetic of the production how.

  2. Description of the Related Art Conventionally, a method for producing a solid cosmetic that solidifies a cosmetic filled in a decorative dish by pressing the cosmetic with a press head is known. This press head has a press surface having a shape corresponding to the opening shape of the vanity so that it can be inserted into the opening of the vanity. Conventionally, however, the press surface has no chamfered edge. It was used. For this reason, the burr of the cosmetic material formed in an annular shape along the inner surface of the decorative dish was crushed due to vibrations and impacts applied to the molded product afterwards, falling off into a powder form, leading to a deterioration in the appearance of the product. . The reason why cosmetic burr is generated is that there is a clearance (a small gap) between the outer surface of the press head and the inner surface of the decorative plate located outside the press head in order to smoothly raise and lower the press head. This is because the cosmetics pushed out by the press enter the clearance and solidify.

  As one of the solutions to this problem, Patent Document 1 discloses a method for manufacturing a cosmetic product in which a cosmetic filled in a decorative dish is press-molded with an elastic press head via a flexible sheet. Has been. The elastic press head is elastically deformed at the time of pressing and spreads in the entire recess of the decorative dish without any gaps, so that the clearance between the press head and the decorative dish is relaxed. As a result, since the amount of cosmetics that penetrates between the press head and the decorative dish is reduced, the occurrence of burrs in the cosmetics can be effectively reduced.

  On the other hand, although not paying attention to the above-described problem, Patent Documents 2 and 3 disclose a configuration in which the surface of the solid cosmetic in the decorative dish is formed into a curved surface. Specifically, in Patent Document 2, in order to make the hardness of the solid cosmetic material uniform, the surface of the solid cosmetic material has a wide variety of shapes such as a dome shape, a hemispherical shape, a conical shape, a pyramid shape, and a diamond cut shape. A convex solid cosmetic molded into a three-dimensional shape is disclosed. Further, in Patent Document 3, according to the shape of the bottom of the container, the surface of the cosmetic is also made three-dimensional so that the thickness of the cosmetic to be filled and molded is uniform, so that there is no difference in the press pressure. A solid powder cosmetic is disclosed.

JP-A-8-154732 Japanese Patent Laid-Open No. 5-201829 JP 2002-51830 A

  The objective of this invention is reducing effectively the burr | flash of the cosmetics formed along the inner surface of a decorative dish.

  Another object of the present invention is to effectively reduce the scattering and dropping off of cosmetics due to vibration and impact.

In order to solve such a problem, the present invention has a first step of filling cosmetics in a decorative dish, and a press surface having a shape corresponding to the opening of the decorative dish, and the edge of the press surface is entirely covered. There is provided a method for producing a solid cosmetic comprising a second step of pressing the cosmetic filled in a decorative dish by a press head chamfered in a curved shape over the circumference. Here, in the present invention, the press head is preferably formed of an elastic body.

According to the present invention, the cosmetic filled in the decorative dish is pressed using the press head whose edge of the press surface is chamfered. Thereby, generation | occurrence | production of the burr | flash of the cosmetics along the inner surface of a decorative dish can be reduced effectively. Further, due to the chamfered shape of the press head, the surface of the cosmetic material has a curved surface shape that gently leads from the inner surface of the decorative dish toward the center of the decorative dish. Accordingly, it is possible to effectively reduce the scattering and dropping off of cosmetics due to vibration and impact.

  FIG. 1 is a plan view of a press pad according to the present embodiment. A press head 7 having the press pad 1 attached to the press substrate 4 shown in FIG. The press pad 1 may be formed of either an elastic material or a hard non-elastic material. However, when formed by an elastic body such as elastomer (synthetic rubber), an effect of reducing burrs due to elastic deformation as described in Patent Document 1 described above can be expected. At the same time, an effect of absorbing the variation in the filling amount of the cosmetic can be expected. In the present embodiment, the press pad 1 is formed of an elastic body. Alternatively, the press head 7 may be formed only of the press substrate 4 by forming the press substrate 4 itself with an elastic body and forming the press substrate 4 into a press surface shape as described later.

  The lower surface of the press pad 1 functions as a press surface 1a that presses the cosmetic filled in the decorative dish in the pressing process. The press surface 1a has a rectangular shape with rounded four corners in plan view, and has a shape corresponding to the opening of a decorative dish to be pressed. However, the press pad 1 is formed with a slight clearance with respect to the opening of the vanity so that the press pad 1 can freely move up and down even when it is inserted into the opening of the vanity. In addition, in order to perform the transfer to the cosmetics surface, the press surface 1a may be formed with a mesh, a string, a character, a logo, or the like.

  FIG. 2 is a cross-sectional view of the main part of the press pad 1. Most of the press surface 1a of the press pad 1 is formed in a flat shape, but only the edge portion 1b is chamfered in a curved shape over the entire circumference. In the prior art, the edge portion 1b is formed in a substantially right angle, whereas the present embodiment is characterized in that the edge portion 1b is rounded (with R). As will be described later, the rounded diameter of the edge 1b directly affects the degree of occurrence of burr in the cosmetic and the strength thereof. Therefore, the specific values are based on the inherent strength of the cosmetic material, the magnitude of vibration and impact that will be applied during product transportation, the opening area of the vanity, the height of the generated Paris, etc. It is necessary to set it appropriately through experiments and simulations.

  Next, a pressing process of pressing the cosmetic using the press head 7 having the above-described press pad 1 will be described with reference to FIGS. 3 and 4.

  First, as shown in FIG. 3, the cosmetic dish 2 is filled with the cosmetic 3, and the decorative dish 2 is constituted by a hard press substrate 4 made of ABS resin or the like and the press pad 1. Set directly under the press head 7. Filling the cosmetic dish 2 with the cosmetic 3 may be performed using either a dry filling method or a wet filling method. In addition, between the press pad 1 and the cosmetics 3, single or plural thin papers 5 such as mesh, paper, and Manila hemp fiber are provided. When the mesh and paper are used as a plurality of thin papers 5, an air bleeding action at the time of pressing is achieved by arranging the mesh on the press surface (molding surface) side.

  Next, as shown in FIG. 4, the press head 7 that has been lifted is lowered, and the cosmetic 3 filled in the decorative dish 2 is pressed by the press pad 1. Although most of the surface of the pressed cosmetic 3 is planar, the vicinity of the outer frame of the decorative dish 2 bulges in a curved shape corresponding to the edge 1 b of the press pad 1. In addition, when using an elastic body as the press pad 1, according to the press pressure in this press process, the press pad 1 elastically deforms and spreads in the whole recessed part of the vanity plate 2 without a gap. Thereby, the clearance which exists between the outer surface of the press pad 1 and the inner surface of the vanity plate 2 is relieved. Since the amount of the cosmetic 3 entering the clearance is reduced by the amount of the clearance being narrowed, the occurrence of burrs of the cosmetic 2 on the inner surface of the decorative dish 2 is consequently suppressed. Then, the press-molded solid cosmetic 6 is completed by raising the press head 7.

  FIG. 5 is a diagram showing a state of the press-molded solid cosmetic 6. In this solid cosmetic 6, the solid cosmetic 3 filled in the decorative dish 2 has a protruding portion 3 b protruding upward from its own surface 3 a along the inner surface of the decorative dish 2. The protruding portion 3b gradually increases in thickness d downward from the tip, and is gently connected to the surface 3a below.

  Thus, according to this embodiment, the cosmetic 3 filled in the cosmetic dish 2 is pressed using the press pad 1 in which the edge 1b of the press surface 1a is chamfered. Thereby, generation | occurrence | production of the burr | flash of the cosmetics 3 along the inner surface of the decorative dish 2 can be reduced effectively. Further, due to the chamfered shape of the press pad 1, the surface of the cosmetic 3 has a curved surface shape that gently leads from the inner surface of the decorative dish 2 toward the center of the decorative dish 2. Therefore, even if the protruding portion 3b exists, it is difficult to break due to vibration or impact, and thus the scattering or dropping of the cosmetic 3 can be effectively reduced. At the same time, since the protruding portion 3b is smoothly connected to the surface 3a of the cosmetic 3, the protruding portion 3b is hardly noticeable. As a result, it is possible to effectively prevent the appearance of the product from deteriorating.

  In particular, when an elastic body is used as the press pad 1, the press pad 1 spreads in the entire recess of the decorative dish 2 without gaps due to elastic deformation during pressing, so that there is a clearance between the press pad 1 and the decorative dish 2. Alleviated. As a result, the amount of the cosmetic 3 entering between the press pad 1 and the cosmetic dish 2 is reduced, so that the occurrence of burrs in the cosmetic 3 can be effectively reduced and the variation in the filling amount of the cosmetic 3 is also effective. Can absorb.

Top view of press pad Cross section of the main part of the press pad Explanatory drawing of pressing process Explanatory drawing of pressing process A figure showing the state of press-molded cosmetics

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Press pad 1a Press surface 1b Edge 2 Cosmetic dish 3 Cosmetics (solid cosmetics)
3a Surface 3b Protruding part 4 Press substrate 5 Thin paper 6 Solid cosmetic 7 Press head

Claims (2)

In the method for producing a solid cosmetic,
A first step of filling a cosmetic dish with cosmetics;
The cosmetic filled in the decorative dish is provided by a press head having a press surface corresponding to the opening of the decorative dish, the edge of the press surface being chamfered in a curved shape over the entire circumference. And a second step of pressing. A method for producing a solid cosmetic, characterized by comprising:   The method for producing a solid cosmetic according to claim 1, wherein the press head is formed of an elastic body.

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