JP2007319314A - Brush tip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brush tip for the application of cosmetics or the like, excellent in delivery of the cosmetics and soft in a skin touch at the application. <P>SOLUTION: The straight bristles and the crimpy bristles are blended to form the brush tip, wherein the brush tip consists of the straight bristles of 20-80 wt.% and the crimpy bristles of 20-80 wt.%. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a brush tip formed by mixing straight brush brush and brush with crimp, and is particularly suitable for a cheek brush such as a cosmetic brush, a face brush, a powder brush, an eye shadow brush, and the like.

  Traditionally, brushes such as makeup brushes have used animal hair such as horses, deer, pigs, foxes, foxes, chestnuts, foxes, sheep, etc. In order to adjust the thickness, etc., the type and combination of the above animal hairs are changed into products. In general, it is said that the quality of brush ears made only of animal hair with a long brush taper shape and a delicate surface condition and soft skin feel is good. Representative examples are eyelashes, wool and eyelashes. However, since animal hair is a natural product, there are problems that it is difficult to obtain a product with a constant quality, it is difficult to obtain an arbitrary size and shape, and wear resistance is low. There is also the problem of higher prices due to a decrease in the yield of straw, straw and straw.

  Therefore, using synthetic resin brush hairs instead of animal hairs forming brush ears has been performed. In order to taper the tip of the synthetic resin fiber to make a synthetic resin brush such as animal hair, a method of bringing the synthetic resin fiber into contact with a treatment solution that dissolves or decomposes has been proposed. (See Patent Document 1 and Patent Document 2).

By the way, a brush tip using a synthetic resin brush having a tapered tip has a problem that the holding power of the cosmetic is low and a problem that the skin feel is hard when applied and the feeling of use is bad. In order to solve this problem, the hair of the animal hair and the synthetic resin brush with a tapered tip are mixed (see Patent Document 3) or wave-curved (crimped) with different wavelengths. Brushes made of a large number of synthetic resin brushes (see Patent Document 4), and four types of tapered fibers obtained by processing a polyester fiber by hydrolysis. In other words, a brush with a long taper fiber in the throat, a medium taper length fiber in the belly, and a short taper fiber in the waist has been proposed (see Patent Document 5).
Japanese Patent Publication No. 49-6159 (Claims). Japanese Patent Publication No. 60-30556 (column 3, line 24 to column 4, line 15). JP-A 63-102998 (claims). (Japanese Utility Model Laid-Open No. 62-114781 (claim of utility model registration)). Japanese Utility Model Laid-Open No. 56-83073 (the scope of claims for utility model registration).

However, in the case of a mixture of animal hair and synthetic resin brush with a tapered tip, it must have the disadvantages of animal hair, and it is made of many synthetic resins with different crimp wavelengths. In the case of the brush, the space ratio tends to increase, the tip is too wide, and the tip unit is inferior (uneven). In addition, brush heads made of four types of polyester fibers with different taper lengths are all straight and use a fiber with a tapered tip. The problem was that the properties were poor and the skin contact at the time of application became hard and the feeling of use was poor.
The present invention has been made in view of the above problems, and provides a brush tip for applying cosmetics and the like, which has good dischargeability of the cosmetic material and has a soft skin contact at the time of application. This is a problem.

  The present invention is a brush head obtained by mixing straight brush hair and brush hair having crimp, and the straight brush hair is 20 to 80% by weight and the brush hair having crimp is 20 to 80% by weight. % Is the gist.

  The brush ear according to the present invention is a brush ear obtained by mixing straight brush hair and brush hair having crimp, and the straight brush hair is 20 to 80% by weight, and the brush hair having crimp is used. Since it is 20 to 80% by weight, it is possible to obtain a brush with a good texture, a soft feeling in use, and good cosmetic retention. In particular, it is most suitable for a face or cheek brush to which powder such as powder is applied, and a brush having a soft skin contact like animal hair, containing powder powder and having good fixation on the skin can be obtained.

The present invention will be described below. In FIG. 1, reference numeral 1 is a makeup brush, and this brush 1 is inserted and fixed to the front shaft 4, and the front shaft 4 is inserted and fixed to the front end of the rear shaft 5 to form a brush. . Further, the brush head 1 is converged in the longitudinal direction using a straight small brush 2 with a tapered tip and a small brush 3 with a tapered tip, and the rear end is heat-sealed. It is formed by being fixed by a method such as adhesion with an adhesive.
Synthetic resin fiber materials used for the brushes 2 and 3 are polyamide (6,6-nylon, 6-nylon, 12-nylon, 6,10-nylon, 6,12-nylon, etc.) polyester ( Polyethylene terephthalate, polybutylene terephthalate, etc.), polyurethane, polyacrylonitrile, acrylonitrile-styrene copolymer, acrylonitrile-butadiene copolymer, etc. can be used, but the material of each brush may be the same or different good.

  As described above, in order to taper the tip of the synthetic resin fiber to form a brush, a method using a treatment liquid is preferable. As a specific example, mixing of metacresol and calcium chloride-methanol solution with polyamide is preferable. A combination of a sodium hydroxide aqueous solution or the like may be used with respect to the liquid and polyester. However, it is not necessarily limited to this method. For example, other methods such as heat-stretching a synthetic resin fiber to be tapered and mechanical taper such as grinder polishing may be adopted. good.

  Although the diameter (diameter) of the brush used for the brush 1 varies depending on the production use or size (diameter and length of the base), the brushes 2 and 3 in the cosmetic brush 1 according to the present invention are: It is preferable to use a base having a diameter of 0.04 to 0.08 mm. In addition, the diameter of the base part of a brush here means the diameter of the part which is not taper-processed.

Here, the purpose of using the straight brush 2 is for the purpose of improving the stability of the waist at the time of application and the unit of the brush head. The diameter is preferably about 0.04 mm to 0.08 mm. The reason is that if the diameter is less than 0.04 mm, rough hair without the taper may be mixed on the taper processing, and if the diameter exceeds 0.08 mm, the skin contact at the time of application is hard. This is because the feeling of use becomes worse.
Moreover, as a use ratio which occupies for the brush ear 1, 20-80 weight% of the straight brush brush 2 is preferable. The reason is that if the straight brush with a small diameter is less than 20% by weight, the waist is difficult to stabilize and the waist may be crushed. If the straight brush 2 exceeds 80% by weight, the retention of the cosmetics will deteriorate. This is because the skin contact at the time of application becomes hard and the feeling of use becomes worse.
Any number of brushes may be used as long as the diameter is in the range of 0.04 to 0.08 mm.

The brush 3 having crimps is used for the purpose of softening the retention of cosmetics and the skin contact at the time of application, and various crimped states can be adopted. The diameter is preferably about 0.04 mm to 0.08 mm. The reason is that if the diameter is less than 0.04 mm, rough hairs that are not tapered due to taper processing may be mixed in. If the diameter exceeds 0.08 mm, the skin contact at the time of application becomes hard and the usability is Because it gets worse.
Moreover, as a ratio which occupies for brush ear 1, 20 to 80 weight% is preferable. The reason for this is that if it is less than 20% by weight, the cosmetics retainability is poor at the time of application, and the skin contact may become hard and the feeling of use may be reduced. This is because it may break or break.
It is preferable that the crimp pitch P of the brush 3 is 1.0 mm to 4.0 mm, and the crimp height H is 0.04 mm to 0.5 mm. In addition, as long as the diameter D of the brush is in the range of 0.04 to 0.08 mm, any number may be used.

  In producing the cosmetic brush of the present invention, at least the above-mentioned two types of brushes are mixed, and the rear end is welded and bonded, or the rear part is tied with a thread to prevent the brush from falling off. As a matter of course, in the mixed brush head, it is preferable that the straight brush brush 2 and the brush brush 3 having a crimp are uniformly arranged with each other.

(Example)
Examples will be described below.
FIG. 1 shows a brush which is an example of use of the cosmetic brush ear of the present invention. Reference numeral 1 denotes a makeup brush, which is obtained by mixing brushes 2 and 3 described later and welding the rear part. The makeup brush 1 is inserted and fixed to the front shaft 4, and the front shaft 4 is inserted and fixed to the front end of the rear shaft 5 to form a brush.
The brush used is a straight small brush 2 with a tapered tip and a small brush 3 with a crimped tip. Other conditions are shown in Table 1.

Examples 1-11, Comparative Examples 1-11
Table 2 shows the blends of the brushes of Examples 1 to 11 and Comparative Examples 1 to 11.

  A brush was formed as shown in FIG. 1 using the above-described cosmetic brush ears of Examples 1 to 11 and Comparative Examples 1 to 11, and a questionnaire survey was performed on the skin at the time of application, attachment of cosmetics, and elasticity.

Application test (questionnaire survey)
Method: We conducted a questionnaire survey on the usability of cheek brushes for women who were randomly selected.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is a front view of the brush with which the tip of one Example of this invention was mounted | worn. It is an expansion schematic diagram of a brush ear (straight). It is an expansion schematic diagram of a brush ear (crimp).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Brush ear 2 Straight small-diameter brush with a tapered tip 3 Small brush with a tapered tip 4 Front shaft 5 Rear shaft

Claims (3)

It is a brush head formed by mixing straight brush hair and brush hair having crimp, and the straight brush hair is 20 to 80% by weight and the brush hair having crimp is 20 to 80% by weight. A brush ear characterized by The brush brush according to claim 1, wherein the brush having crimps has a crimp pitch of 1.0 mm to 4.0 mm and a crimp height of 0.04 mm to 0.50 mm. . The brush ear according to claim 1 or 2, wherein a diameter of a base portion of the filament is 0.04 mm to 0.08 mm.

Images