JP2007007334A - Applicator using mixture of linear and wavelike shapes in fiber shape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the entanglement of ends of brush bristles and the scattering in the direction of the bristle ends in a cosmetic brush. <P>SOLUTION: A prescribed length of the ends of the brush bristles 1 formed into waveform-like shape is made straight. When tying the brush bristles 1 and manufacturing the cosmetic brush, this constitution enables prevention of the mutual entanglement of the end parts of the respective brush bristles. The constitution also enables alignment of the ends of the brush bristles in approximately same direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cosmetic applicator, and more particularly to a cosmetic applicator for applying a powdery cosmetic material such as a brush or a brush.

  Conventionally, the thing using natural animal hair is known as a brush used for this kind of applicator. Animal hair brushes are generally crimped one by one, and have a tapered or pointed shape that gradually becomes narrower toward the tip. When the brush is crimped, the brush is appropriately spread in a state where the brush is bundled to form the applicator. As a result, in the application work for cosmetics, especially in the case of powdery cosmetics, work such as so-called suction and discharge can be performed satisfactorily. That is, an appropriate amount of cosmetic can be retained, while an appropriate amount of cosmetic can be transferred to an application target such as human skin during application. Further, since the brush is tapered toward the tip, it gives a soft feeling when it comes into contact with human skin during use.

  Moreover, what was described in patent document 1 and patent document 2 is known as a synthetic fiber brush resembling the form of the animal hair brush which has the above advantages. Patent Document 1 describes a brush having a synthetic fiber such as polyethylene terephthalate that is crimped or tapered. Further, Patent Document 2 describes a cosmetic brush in which a brush has an irregular waveform. Brushes with crimps or corrugations formed on these synthetic fibers exhibit the functions of sucking and discharging powdered cosmetics in the same manner as the above-described brush with animal hair. In addition, like the animal hair, the tapered shape at the tip gives a soft feeling of use.

Japanese Patent No. 3434700 US Pat. No. 5,195,546

  However, the above-described brushes made of synthetic fibers, in particular, have a problem caused by the tips entangled in a bundled state. That is, when the hair ends are entangled, the finish of the makeup by application may be streaked or uneven, or the feeling of use may be poor. This is because crimps or corrugations are formed up to the tip of the brush, and when the brushes come into contact with each other in a bundled state, they are more likely to be entangled by the crimp or wave shape of the tip. In addition, there is a problem that the direction of the brush tip is sparse due to the brush being crimped or corrugated, or entangled by the brush, resulting in poor usability.

  FIG. 1 is an enlarged view showing an example of an applicator and a state in which a brush has a waveform formed up to its tip. FIG. 2 is a diagram schematically showing a state in which the tip of the brush of the applicator shown in FIG. As shown in FIG. 1, the brush 1 of the applicator 10 has a waveform formed up to the tip, so that the brushes are easily entangled in the vicinity of the tip, and the entangled portion 2 is formed. Moreover, since the waveform of each brush 1 is formed up to the tip, the direction of the end varies depending on which part of the cycle the waveform becomes the end. As a result, as shown in FIG. 2, the directions of the hair ends are not aligned.

  Such conventional crimps or corrugated brushes are crimped to the tip, and the direction of the brush differs greatly depending on the manufacturing method.

  That is, the brush of Patent Document 1 is formed by crimping two or more fibers and heat-curing to form a crimp, then cutting to a certain length and sharpening one end with a hydrolyzate to give a taper. . And what was isolate | separated into each fiber becomes a brush. In this way, since the fiber in which crimps are formed in advance as a whole is cut, an end portion by cutting also becomes a part of the crimps. Accordingly, the brush having the end as the tip has crimps formed to the tip.

  Moreover, the waveform with respect to a fiber can generally be formed by crimping. FIG. 3A is a diagram schematically showing an example of a conventional crimping process. As shown in the figure, the fiber 20 that becomes a brush is passed between a pair of pressure rollers 100 after being spun. During this time, the roller 100 is pressed to form a corrugated shape 20A. FIG. 3B shows the fiber 20 after this waveform formation. And the fiber 20 in which the waveform was formed in this way is cut | disconnected for brush production. At this time, as in the case of the crimp described above, the brush that tips the cut end has a waveform formed up to the tip.

  Further, in this case, the direction of the waveform varies depending on the cut location in the fiber 20. Of course, this is the same for crimping. FIG. 4 is a diagram for explaining a difference in waveform direction depending on the cut portion. As shown in the figure, the directions of the end portions are indicated by arrows a, b, c, and d in accordance with the cut points A, B, C, and D, respectively. As a result, when the brush is made by bundling fibers, the tips of the brush become sparse in their orientation.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a cosmetic applicator that has no tangling between brush tips and variations in the orientation of the tips. There is to do.

  Therefore, in the present invention, in a cosmetic applicator configured to include a plurality of brushes each having a waveform, a portion of a predetermined length from the tip of the brush is corrugated. It is characterized by having no straight shape.

  According to the above configuration, since the predetermined length of the brush is a straight shape having no waveform, the ease of entanglement between the brushes can be reduced. Further, the straight shape enables the direction of the brush to be in a substantially constant direction.

  As a result, for a cosmetic applicator that has no tangling between the brush tips and variations in the direction of the tips, it is possible to obtain a makeup finish without streaks or unevenness and to improve the feeling of use. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
Fig.5 (a) is a schematic diagram which shows the outline of the crimp apparatus which performs a waveform process to the brush based on 1st embodiment of this invention, FIG.5 (b) is the fiber processed with the said crimp apparatus. FIG.

  In FIG. 5A, a mechanism (not shown) for performing the spinning process of the fiber 20 is arranged on the upstream side in the transport direction indicated by the arrow A in the transport path of the fiber 20. The fiber 20 spun by this mechanism is conveyed to the crimping device before being stabilized. In the crimping apparatus, the fibers 20 are transported in a state where a certain tension is applied by a pair of transport rollers 201 and 202 provided on the upstream side and the downstream side of the pair of pressure rollers 200 in the transport path. . And the waveform processing by the pressure roller 200 is performed during this conveyance.

  That is, the two upper and lower pressure rollers 200 are pressed in the directions of arrows B1 and B2 by a mechanism (not shown). At the same time, the pressure rollers 200 are rotated in the directions indicated by the arrows C1 and C2. The two upper and lower pressure rollers 200 are provided with a gear portion 200A and a straight portion 200B corresponding to the waveform formed on the fiber 20 around each. And each gear part 200A and straight part 200B of a pressure roller have the relationship of a shape and arrangement | positioning which mutually engages or meshes | engages. As a result, as the two upper and lower pressure rollers 200 rotate in the directions of arrows C1 and C2, respectively, a corrugation and a straight portion are formed in the fiber 20 passing between these rollers.

  As shown in FIG. 5B, in the crimped fiber 20, one straight portion 20B is formed between two corrugated portions 20A. The fiber 20 in this state is cut at a part of the straight part 20B, and the other end is cut so as to be a part of the corrugated part 20A. Thereby, the fiber 20 of the predetermined | prescribed length whose one edge part is a straight part and the other edge part is a waveform part can be obtained. Next, as described in Patent Document 1, for example, a portion of the straight portion is brought into contact with a treatment solution that dissolves or decomposes by a predetermined length, thereby tapering the portion.

  FIGS. 6A and 6B are diagrams showing two forms of the brush 1 (or the fibers 20 before being bundled) that can be produced according to the present embodiment. FIG. 6A shows a form in which all the straight parts are tapered, and FIG. 6B shows a form in which a part of the straight part is a tapered part. The length of the straight part and the length of the taper part can be determined by setting the length of the straight part 200B of the roller 200 and the length of contact with the processing liquid.

  Of course, the brush 1 to be produced is not limited to the above two forms. For example, the taper portion may be longer than the straight portion and enter the corrugated portion. In other words, a straight portion having a predetermined length may be formed at the tip of the brush regardless of the presence of the taper. In addition, the cross-sectional shape of the brush is circular in this embodiment, but any shape known as a brush can be used. In that case, of course, the roller 200 or the like has a configuration corresponding to the cross-sectional shape of the fiber.

  As shown in FIG. 7, the application brush made by bundling the fibers or brushes made as described above does not entangle the brushes 1 with each other at the tip of the brush, and in almost the same direction. It will be suitable. As a result, it is possible to perform a good application without streaks or unevenness in the finish of the makeup by application, and the usability is also good. Therefore, when used for applying powdery cosmetics such as face powder, teak, eye shadow, etc., moderate suction and discharge can be obtained, and a more functional applicator can be obtained.

  The length of the straight part of the brush is, for example, the ratio of the straight part to the entire brush, etc., and the entanglement of the bristles when the brush is bundled, the function of suction / discharge, the feeling of use, etc. It can be determined based on the function evaluation.

(Embodiment 2)
The second embodiment of the present invention relates to a brush that is produced using commercially available fibers made of a synthetic resin and already formed with a taper.

  FIG. 8 is a diagram showing a brush manufacturing apparatus using the mold press according to the present embodiment. As shown in FIG. 8, a pair of mold presses 300 that can move up and down has corrugated portions 300A formed on the respective press surfaces. On the other hand, one end of the fiber 30 to be processed is tapered as described above. And this fiber 30 is bundled so that the taper side may become the same edge part, and it fixes so that what was bundled can be separated later. Thereby, the fiber bundle 31 is produced. The fixing method is specifically a form of temporary fixing with an adhesive, a part of a bundle of fibers is sandwiched with a predetermined metal tool, a part is completely fixed, and the part sandwiched is cut after processing. It is possible to use a form, a form in which pressure is applied by a chuck or the like so as not to move, and the pressure on the chuck is released after processing. The fiber bundle 31 is placed on the press surface of the press 300 with the side opposite the taper side as the back side. At this time, as shown in FIG. 8, the position of the fiber bundle 31 is determined so that the straight portion of the fiber 30 is arranged outside the press surface. On the other hand, the mold press 300 is adjusted to a temperature at which the fiber 30 can be plastically deformed. Then, the pair of presses 300 are moved downward and upward, respectively, and the fiber 30 is pressed to form a waveform 30A. In this processing, there is a straight portion on the extension line of the line connecting the centers of the amplitudes of the waveforms.

  As described above, the brush having the form shown in FIGS. 6A and 6B can be obtained also by the writing of the brush according to the present embodiment. In addition, by designing the shape of the corrugated portion 300A on the press surface, the corrugated portion 30A having various shapes can be formed. For example, it is possible to form a corrugated portion having a shape such that the amplitude of the waveform decreases as it goes to the tip of the fiber 30.

  The brushes of the first and second embodiments described above have an advantage that the manufacturing method is relatively easy. That is, the waveform of the brush in the above two embodiments is substantially in a two-dimensional plane. From this point, when producing the tooth profile of the roller for forming the waveform or the waveform of the die press, deformation or the like may be considered in a two-dimensional plane.

  Further, the above two production methods have an advantage that the material of the fiber is not selected.

(Embodiment 3)
In the first and second embodiments described above, the brush is formed with a waveform, but it goes without saying that the application of the present invention is not limited to such a form. For example, the tip of the brush with the crimp described in Patent Document 1 may be straight. That is, the waveform referred to in the present specification constitutes a waveform in a substantially two-dimensional plane. On the other hand, the crimp includes a twisting element and is in a three-dimensional wavy state. A straight part can also be formed with respect to the brush with which this crimp was formed.

  For example, in the case of adopting the method of forming crimps by matching as described in Patent Document 1, the straight portion is formed by not twisting a portion of a predetermined length from one end of the fiber. Can do.

It is a figure which expands and shows an example of the applicator for makeup | decoration, and the state where what formed the waveform to the front-end | tip in the brush is entangled. It is a figure which shows typically the state which the hair end faced the sparse direction with the waveform in the brush of the applicator shown in FIG. (A) is a figure which shows typically an example of the conventional crimping process. (B) is a figure which shows the fiber after the waveform formation by the said crimping process. When cutting the fiber in which the waveform was formed by the said crimp process, it is a figure explaining the difference in the direction of the waveform by the cutting location. (A) is a schematic diagram which shows the outline of the crimp apparatus which performs a waveform process to the brush which concerns on 1st embodiment of this invention, (b) is a fiber typically processed with the said crimp apparatus. FIG. (A) And (b) is a figure which shows two forms of the brush which can be produced by this embodiment. The application brush made by bundling the brushes produced according to the embodiment of the present invention is a diagram illustrating a state in which the brushes are not entangled with each other at the brush end and are oriented in substantially the same direction. is there. It is a figure which shows the brush production apparatus using the metal mold press which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Brush 2 Entangled part 10 Applicator 20, 30 Fiber 31 Fiber bundle 20A Corrugated part 20B Straight part 200 Pressure roller 200A Corrugated part 200B Straight part 201, 202 Conveyance roller 300 Mold press 300A Corrugated part

Claims (2)

In a cosmetic applicator configured to include a plurality of brushes each having a corrugated shape,
A cosmetic applicator characterized in that, for each of the plurality of brushes, a portion having a predetermined length from the tip of the brush is formed into a straight shape having no waveform. In a cosmetic applicator configured to include a plurality of brushes each crimped,
A cosmetic applicator characterized in that, for each of the plurality of brushes, a portion having a predetermined length from the tip of the brush is formed into a straight shape without crimps.

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