JP2004223028A - Point of writing brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of the point of a writing brush composed of four types of polyester fibers with different lengths wherein the fibers used are all straight and have tapered tips, the points of the brush are well unified, but too closely gathered so that application liquid hardly flows in the point, low-viscosity application liquid flows but handwriting with high-viscosity application liquid becomes faint in writing, and the point of another writing brush formed by mixing at least two types of straight brush bristles with different diameters and tapered their tips, with brush bristles having crimp and brush bristles having a deformed cross section, whose unity and delivering performance are favorable but elasticity in the tip is weak. <P>SOLUTION: This point of the writing brush is formed by mixing at least the straight brush bristles with different diameters, the brush bristles with crimp and the brush bristles with deformed cross section. The diameter of the fiber of the brush bristles with the crimp is 0.2-0.5 times that of the straight brush bristles and the diameter of the fiber of the brush bristles with deformed cross section is set to 0.7-1.0 times that of the straight brush bristles. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【００１８】
実施例１〜１２、比較例１〜６
表２に実施例１〜１２、並びに、比較例１〜６の筆穂の筆毛の配合を示す。
【００１９】
【表２】

【００２０】
上記実施例１〜１２及び比較例１〜６の化粧用筆穂を用いて図１のように筆を形成し、塗布時の弾性試験（タッチ）及び化粧料の塗布試験をおこなった（表３参照）。
【００２１】
塗布時の弾性試験
方法：レオメーターに筆穂を６０度にセットし、ブラシ先端より５ｍｍの位置まで速 度２ｃｍ／ｍｉｎの速さで押し付けたときの変形荷重を測定した。
塗布試験（アンケート調査）
方法：任意に抽出した女性にアイライナーの使用性についてアンケート調査を実施した。
【００２２】
【表３】

【００２３】
【発明の効果】
本発明に係る筆穂は、先端をテーパー加工した径の異なるストレートな筆毛と先端をテーパー加工したクリンプを有する筆毛と先端をテーパー加工した断面が異形な筆毛とを少なくとも混毛してなるので、先端をテーパー加工した径の異なるストレートな筆毛が筆穂の腰を適度にすると共に、穂先のまとまりを良くし、また、先端をテーパー加工したクリンプを有する筆毛が化粧料の保持性を良くし、さらに、先端をテーパー加工した断面が異形な筆毛が塗布時の吐出性を良くするので、全体として、筆穂先端の腰が適度でまとまりの良い、塗布液の保持性が良い筆穂が得られるものである。
【図面の簡単な説明】
【図１】本考案の一実施例の筆穂を装着した筆の正面図である。
【図２】筆毛の拡大模式図である。
【図３】断面が異形な筆毛の断面図である。
【図４】図３の変形例を示す図である。
【符号の説明】
１ 筆穂
２ 先端をテーパー加工したストレートな筆毛
３ 先端をテーパー加工したストレートな筆毛
４ 先端をテーパー加工したクリンプを有する筆毛
５ 先端をテーパー加工した断面が異形な筆毛
６ 前軸
７ 後軸[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a brush used for an applicator of a high-viscosity coating liquid, such as a cosmetic liquid such as an eyeliner or a lip color, a handwriting correction liquid, an adhesive, and a facial brush for lacquerware. The present invention relates to a brush ear that has improved properties and touch during writing (elasticity when the brush ear is pressed against the application surface).
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a brush pen in which a brush ear is attached to a tip end opening of a shaft cylinder having an ink storage chamber.
This brush pen uses a low-viscosity ink such as writing ink or black ink as the ink, and uses polyamide (6,6-nylon, 6-nylon, 12-nylon, 6,10-nylon, 6,10-nylon, 6 , 12-nylon, etc.), polyolefins (polyethylene, polypropylene, etc.) polyesters (polyethylene terephthalate, polybutylene terephthalate, etc.), polyurethane, polyacryl, polyacrylonitrile, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, etc. This uses a bundle of synthetic brushes.
[0003]
The above-mentioned writing ink or black ink is generally used that contains a colorant such as a dye or a pigment, a water-soluble organic solvent and water, and has a viscosity of 2.7 to 4.0 mPa · s at 25 ° C. Range. The low-viscosity ink (or low-viscosity coating liquid) in the present invention indicates a substance included in this viscosity range.
[0004]
In addition, the brush ear is formed by bundling a synthetic resin fiber with a tapered tip, bundling the base with a thread or the like, bonding with an adhesive, or welding by applying heat. Things are used.
By the way, in order to taper the tip of the synthetic resin fiber to form a brush, a method of contacting the synthetic resin fiber with a treatment liquid that dissolves or decomposes the fiber has been proposed (see Patent Documents 1 and 2). .
[0005]
Furthermore, various proposals have been made for the purpose of improving the holding amount of the coating liquid for the brush. For example, four types of brushes obtained by crimping brushes in a wavy shape, and brushes made of synthetic resin brushes having a plurality of tapered tips each having a different wavelength (see Patent Document 3) and polyester fibers obtained by hydrolysis. Brushes made by mixing fibers with different taper lengths (see Patent Document 4), straight brushes with different diameters, and brushes with crimps with different diameters and brushes with irregular shapes. A brush hair with at least mixed hair (see Patent Document 5) has been proposed.
[0006]
[Patent Document 1]
JP-B-49-6159 (Examples 1 to 3).
[Patent Document 2]
JP-B-60-30556 (column 5, line 35 to column 8, line 4).
[Patent Document 3]
Japanese Utility Model Publication No. 62-114781 (FIG. 2).
[Patent Document 4]
JP-A-56-83073 (claims for registering utility models).
[Patent Document 5]
JP-A-6-24976 (paragraph 0015).
[0007]
[Problems to be solved by the invention]
However, in the case of the above, which is composed of a large number of synthetic resin brushes having different crimp wavelengths, the void ratio is likely to be large, the cohesion of the tip is inferior, and the touch at the time of writing is inevitable. The brush ears made of four types of polyester fibers with different taper lengths are all straight and use a tapered tip, so the tips are good, but the brush is too dense and the coating liquid is too thin. It is difficult for the coating solution to flow in the tip, and the coating solution flows with a low-viscosity coating solution. However, the high-viscosity coating solution has a problem that handwriting is blurred during writing. Furthermore, the brush ears, which are obtained by mixing at least two types of straight brushes having different diameters with tapered ends, brushes having crimps, and brushes having irregular cross-sections, have good head cohesion and discharge properties, The problem was that her waist was weak.
Incidentally, the high-viscosity coating liquid in the present invention has a viscosity in the range of 10 to 200 mPa · s at 25 ° C.
The present invention has been made in view of the above problems, and is a brush ear for applying a high-viscosity coating solution, which has a good discharge property of the coating solution and is unlikely to cause blurring in a coating mark, It is an object of the present invention to provide a brush head that has a good cohesion of the tips and a good touch at the time of writing.
[0008]
[Means for Solving the Problems]
The present invention is a brush ear made of synthetic resin brush with a tapered tip, and the brush ear has a straight brush with different diameters, a brush with crimps, and a brush with a cross-sectional irregular shape. And at least 0.2 to 0.5 times the diameter of the crimped brush fiber with respect to the straight brush, and The gist of the invention is to make the diameter 0.7 to 1.0 times. .
[0009]
Hereinafter, the present invention will be described. In FIG. 1, reference numeral 1 denotes a makeup brush, which is inserted and fixed to a front shaft 6, which is inserted and fixed to a front end of a rear shaft 7 to form a brush. .
The brush ear 1 is focused in the longitudinal direction using straight brushes 2 and 3 having different diameters and having a tapered tip, a brush 4 having a crimp with a tapered tip, and a brush 5 having an irregular cross section. Then, the rear end is fixedly formed by a method such as heat welding or bonding with an adhesive.
[0010]
Examples of the synthetic resin material used for the brush include polyamide (6,6-nylon, 6-nylon, 12-nylon, 6,10-nylon, 6,12-nylon, etc.) polyester (polyethylene terephthalate, poly Butylene terephthalate), polyurethane, polyacrylonitrile, acrylonitrile-styrene copolymer, acrylonitrile-butadiene copolymer and the like can be used, but the material of each brush may be the same or different.
As the straight bristles 2 and 3 having a tapered tip, commercially available products include Tynex brush filament: Round type 0900 series (material: nylon, manufactured by DuPont, USA).
As the brush 4 having a crimp with a tapered tip, commercially available products include Tynex brush filament: Wavy type (material: nylon: corrugated shape: manufactured by DuPont, USA).
As a commercially available product, Tynex Filament: Quadrilobal type 0920 series (material: nylon, cross-sectional shape: clover shape, manufactured by Dupont USA) Tynex brush filament: Type 0960 series (Material: Nylon: Cross-sectional shape sea hose type, manufactured by Dupont, USA), Tynex brush filament: Hollow type 0950 series (Material: Nylon, cross-sectional shape: donut shape, manufactured by Dupont, USA), Casimillon TABR series (Material: Polyacrylonitrile) , Cross-sectional shape: substantially triangular, manufactured by Asahi Chemical Industry Co., Ltd.).
In addition, the cross-sectional irregular shape is a shape whose surface perpendicular to the axial direction of the brush is other than circular, and as exemplified as the commercially available product, a substantially cross shape, a substantially triangular shape, a substantially Y-shaped shape, a clover Radial shapes such as cross-sections, semicircular shapes, and rectangular shapes are particularly preferable because they have more remarkable effects than semicircular and rectangular shapes.
[0011]
This brush ear 1 is composed of at least a mixture of straight brushes 2 and 3 having different diameters whose ends are tapered, a brush 4 having a crimp, and a brush 5 having a deformed cross section. It is necessary that the diameter of the fiber of the bristles having the following is 0.2 to 0.5 times, and the diameter of the bristles having the irregular cross section is 0.7 to 1.0 times. This is to allow the coating liquid to flow well in the brush ears and to improve the touch during writing.
[0012]
The purpose of using straight brushes having different diameters is that the brush 2 is used for the purpose of stabilizing the waist at the time of application, and the brush 3 is used for the purpose of improving the cohesion of the tips. It is. The diameter of the brush 2 is preferably about 0.18 mm to 0.25 mm, and the diameter of the brush 3 is preferably about 0.10 mm to 0.21 mm. The reason is that if the diameter of the bristles 2 is less than 0.18 mm, the tip of the brush tip is weak and may break at the time of writing, and if the diameter exceeds 0.25 mm, the waist is too strong and the brush tip at the time of writing is too strong. This is because the bristles protrude from the side, and if the diameter of the bristles 3 is less than 0.10 mm, the resilience of the brush ears deteriorates, and if the diameter exceeds 0.21 mm, the cohesion of the tips deteriorates. is there. In addition, it is preferable that the brush 2 has a maximum diameter as compared with the diameters of other brushes. The reason is to stabilize the waist of the brush and improve the touch at the tip of the brush.
Further, as the usage ratio in the brush ear 1, the straight brush 2 is preferably 5 to 30% by weight, and the straight brush 3 is preferably 30 to 50% by weight. The reason is that if the amount of the straight brush 2 is less than 5% by weight, the waist is difficult to stabilize and the waist may be broken, and if the amount of the straight brush 2 exceeds 30% by weight, the holding property of the coating liquid is deteriorated. This is because the brush protrudes from the side of the brush during writing. If the amount of the straight bristles 3 is less than 30% by weight, the cohesion of the brush ears may be deteriorated, and if the amount of the straight bristles 3 exceeds 50% by weight, the retention of the coating solution is reduced.
Any number of types of straight brushes may be used as long as the diameter is in the range of 0.10 to 0.25 mm.
[0013]
The crimped brush 4 is used for the purpose of improving the retention of the coating solution, and various crimped states can be adopted. The diameter is preferably about 0.2 to 0.5 times the straight brush 2. The reason is that if the diameter is less than 0.2 times, no taper is formed on the taper processing, coarse hair may be mixed, and if the diameter exceeds 0.5 times, the porosity becomes too large, This is because the ears become less cohesive.
The proportion of the brush brush 1 is preferably 5 to 20% by weight. The reason for this is that if the amount is less than 5% by weight, the retention of the coating liquid during coating is poor, and if it exceeds 20% by weight, the brush ears may be broken or broken during writing.
[0014]
The brush 5 having an irregular cross section is used for the purpose of improving the dischargeability of the coating liquid. The diameter is preferably about 0.7 to 1.0 times the straight brush 2. The reason is that if the diameter is less than 0.7 times, the porosity is small, and the dischargeability is reduced. If the diameter is more than 1.0 times, the porosity is too large, and the cohesion of the brush is poor. Because.
Further, the proportion of the brush brush 1 is preferably about 20 to 40% by weight. The reason is that if it is less than 20% by weight, the porosity is too small, the discharge of the coating solution is deteriorated, and the tip may be cracked. If it exceeds 40% by weight, the porosity becomes too large, and This is because they may break or break.
[0015]
In manufacturing the brush ear of the present invention, at least the above four types of brushes are mixed, and the rear end is welded, adhered, or the rear part is tied with a thread or the like to prevent the brush from falling off and form the brush ear. However, it is preferable that, in the mixed brush ears, straight brushes 2 and 3 having different diameters, small-diameter brushes 4 having crimps, and brushes 5 having an irregular cross-section are uniformly arranged with each other. .
[0016]
【Example】
Hereinafter, examples will be described.
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 brush head for makeup, which is obtained by mixing brushes 2, 3, 4, and 5 described later and welding the rear portion thereof. The brush ear 1 is inserted and fixed to a front shaft 6, and the front shaft 6 is inserted and fixed to a front end of a rear shaft 7 to form a brush.
As the bristles, straight brushes 2 and 3 having different diameters with tapered ends, brushes 4 having crimps with tapered ends, and brushes 5 having irregular cross sections are used. 1 is shown.
[0017]
[Table 1]

[0018]
Examples 1 to 12, Comparative Examples 1 to 6
Table 2 shows the compositions of the brushes of Examples 1 to 12 and Comparative Examples 1 to 6.
[0019]
[Table 2]

[0020]
A brush was formed as shown in FIG. 1 using the cosmetic brushes of Examples 1 to 12 and Comparative Examples 1 to 6, and an elasticity test (touch) at the time of application and a cosmetics application test were performed (Table 3). reference).
[0021]
Elasticity test method at the time of application: The brush ear was set at 60 degrees in the rheometer, and the deformation load when pressing at a speed of 2 cm / min from the brush tip to a position of 5 mm was measured.
Application test (questionnaire survey)
Methods: A questionnaire survey was conducted on the usability of eyeliners for women randomly selected.
[0022]
[Table 3]

[0023]
【The invention's effect】
The brush ear according to the present invention is obtained by mixing at least a straight brush having a tapered tip with different diameters, a brush having a crimp having a tapered tip, and a brush having a tapered tip having an irregular cross section. So, the brushes with different diameters with the tapered tip make the brush ears moderate and improve the cohesion of the tips, and the brush with the crimp with the tapered tip makes it easier to hold cosmetics. In addition, the brush with a tapered tip that has an irregular cross-section improves the ejection performance during application, so that the tip of the brush ears is moderate and cohesive as a whole, and the coating liquid retainability is good. A brush ear is obtained.
[Brief description of the drawings]
FIG. 1 is a front view of a brush with a brush ear according to an embodiment of the present invention.
FIG. 2 is an enlarged schematic diagram of a brush.
FIG. 3 is a cross-sectional view of a brush with an irregular cross section.
FIG. 4 is a diagram showing a modification of FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Brush ear 2 Straight bristles with a tapered tip 3 Straight bristles with a tapered tip 4 Brushes with crimps with a tapered tip 5 Brushes with a tapered tip and a deformed cross section 6 Front shaft 7 Rear axis

Claims (2)

A brush made of synthetic resin bristles having a tapered tip, wherein the bristles are at least a mixture of straight bristles having different diameters, bristles having crimps, and bristles having irregular cross sections. The diameter of the crimped bristles is 0.2 to 0.5 times that of the straight bristles, and the diameter of the cross-shaped bristles is 0. A brush ear characterized in that it is made to be 7 to 1.0 times. 2. The brush ear according to claim 1, wherein the bristles comprise 40 to 70% by weight of straight bristles, 5 to 20% by weight of crimped bristles and 20 to 40% by weight of bristles having irregular cross sections.

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