JP2010046326A - Bristle material for brush and brush - Google Patents

Abstract

[PROBLEMS] To provide a brush hair material that is excellent in dirt scraping performance and retention performance of liquids such as cleaning liquid and paint, improves the strength of the hair material, and prevents the occurrence of uneven coating, and the brush hair material. Offer a brush.
A brush bristle material 110 made of a synthetic resin monofilament in which a concave portion 2 is spirally formed in a longitudinal direction of an outer peripheral surface, and a crimp-like portion 110a is formed on the bristle material 110. Further, linear portions 110b and 110c are formed at both ends.
[Selection] Figure 1

Description

  The present invention relates to a bristle material for a brush made of a synthetic resin monofilament, and a brush that has the bristle material and is used for cleaning, cleaning, liquid application, and the like.

  Various types of conventional brushes of this type are known. For example, a straight bristle material is generally used because a larger amount of bristle material per unit area can be applied to the surface to be coated without unevenness. However, the straight bristle material tends to increase the thickness of the paint because the paint is relatively easy to descend, that is, it discharges quickly. Moreover, since the straight bristle material is weak, it is easy to bend.

  Wave hair materials are known as hair materials that solve the drawbacks of the straight hair materials. This wave bristle has strength, is difficult to bend, and paint tends to accumulate between the bristle, so that the paint descends relatively slowly and does not thickly coat. However, since the gap between the wave-like hair materials becomes large, uneven coating tends to occur. The wave hair material is also called a crimp-like hair material, a curly hair material, or a crimped hair material.

  Furthermore, the bristle material constituting the brush is a chemical fiber bristle material, and is formed so as to gradually taper as it goes to the tip of the bristle material. A device in which a large number of fine concave portions are formed so as to be easily collected is known (Patent Document 1).

Japanese Patent No. 2879424

  With the technique described in the above-mentioned conventional Patent Document 1, liquid components such as a polishing agent can be retained to some extent in a fine recess, but it is not sufficient. In addition, there is a problem that the liquid once retained in the recess is not easily exchanged with the liquid outside the recess, and the liquid remains in the recess. In addition, there is a problem that it is necessary to improve the frictional force of the bristle material in order to efficiently scrape off the dirt adhered to the surface to be cleaned.

  In view of the above points, the present invention has excellent brushing performance of dirt and retention performance of liquids such as cleaning liquid and paint, improves the strength of the hair material, and prevents the occurrence of uneven coating and the brush. An object is to provide a brush using a hair material.

  According to the first aspect of the present invention, there is provided a bristle material for a brush made of a synthetic resin monofilament in which a concave portion and / or a convex portion are formed in a spiral shape in the longitudinal direction of the outer peripheral surface, and a crimp-like portion is formed on the bristle material. It is characterized by being. Accordingly, since the frictional force is increased by the contact of the concave portion or convex portion with the surface to be cleaned, the dirt can be scraped out efficiently, and the liquid such as the cleaning liquid is held by the spiral concave portion or convex portion at the time of cleaning. Therefore, the cleaning performance is improved. In addition, when this bristle material is used for painting brushes, the spiral recesses or protrusions hold the paint and the liquid does not stay, and new liquids are successively held in the recesses or protrusions. Therefore, it is possible to prevent the paint from flowing down and to apply the paint evenly and uniformly. Furthermore, since the crimp-like portion is formed, the strength of the bristle material can be increased, and a sudden drop of the paint can be prevented. In addition, a crimp-shaped part is a part in the state which the fiber has shrunk, and can provide elasticity and heat retention to a hair material.

  The invention according to claim 2 is a bristle material for a brush made of a synthetic resin monofilament in which concave portions or / and convex portions are formed in a spiral shape in the longitudinal direction of the outer peripheral surface, and the spiral portion is formed in the hair material. It is characterized by being. Accordingly, since the frictional force is increased by the contact of the concave portion or convex portion with the surface to be cleaned, the dirt can be scraped out efficiently, and the liquid such as the cleaning liquid is held by the spiral concave portion or convex portion at the time of cleaning. Therefore, the cleaning performance is improved. In addition, when this bristle material is used for painting brushes, the spiral recesses or protrusions hold the paint and the liquid does not stay, and new liquids are successively held in the recesses or protrusions. Therefore, it is possible to prevent the paint from flowing down and to apply the paint evenly and uniformly. Furthermore, since the spiral portion is formed, the strength of the bristle material can be increased, and a sudden drop of the paint can be prevented. In addition, a spiral part is a part in the state in which the fiber is spirally swirled, and can provide elasticity and heat retention to the hair material.

  A third aspect of the present invention is a brush hair material made of a synthetic resin monofilament in which concave portions or / and convex portions are spirally formed in the longitudinal direction of the outer peripheral surface in the first aspect of the present invention. A linear portion is formed at the tip of the hair material, and a crimp-like portion and / or a spiral portion is formed in addition to the tip. Accordingly, since the frictional force is increased by the contact of the concave portion or convex portion with the surface to be cleaned, the dirt can be scraped out efficiently, and the liquid such as the cleaning liquid is held by the spiral concave portion or convex portion at the time of cleaning. Therefore, the cleaning performance is improved. In addition, when this bristle material is used for painting brushes, the spiral recesses or protrusions hold the paint and the liquid does not stay, and new liquids are successively held in the recesses or protrusions. Therefore, it is possible to prevent the paint from flowing down and to apply the paint evenly and uniformly. Furthermore, since the crimp-like portion is formed, the strength of the bristle material can be increased, and a sudden drop of the paint can be prevented. In addition, since the spiral portion is formed, it is possible to increase the strength of the hair material and to prevent the paint from dropping rapidly. Further, since the linear portion is formed at the tip portion, the tip portion can be coated with the paint flowing down smoothly. Therefore, it is difficult to leave hair marks on the surface to be coated, and uniform coating can be performed.

  In the invention according to claim 4, in the brush used for painting or the like, the brush has a brush part formed by bundling hair materials and a handle part. The hair material for brushes according to any one of 3 is used. Accordingly, since the frictional force is increased by the contact of the concave portion or convex portion with the surface to be cleaned, the dirt can be scraped out efficiently, and the liquid such as the cleaning liquid is held by the spiral concave portion or convex portion at the time of cleaning. Therefore, the cleaning performance is improved. In addition, at the time of painting, the spiral concave or convex portion holds the paint and the liquid does not stay, and the new liquid is sequentially held in the concave or convex portion, so that the paint can be prevented from flowing down. At the same time, the paint can be applied evenly and uniformly. Furthermore, since the crimp-like portion is formed, the strength of the bristle material can be increased, and a sudden drop of the paint can be prevented. In addition, since the spiral portion is formed, it is possible to increase the strength of the hair material and to prevent the paint from dropping rapidly. Further, since the linear portion is formed at the tip portion, the tip portion can be coated with the paint flowing down smoothly. For this reason, it is difficult to leave hairs on the surface to be coated, and it is possible to perform uniform coating.

  In the invention of claim 1, since the frictional force is increased by the contact of the concave portion or the convex portion with the surface to be cleaned, the dirt can be scraped out efficiently, and the liquid such as the cleaning liquid can be removed from the spiral concave portion Since it is held by the convex portion, the cleaning performance is improved. In addition, when this bristle material is used for painting brushes, the spiral recesses or protrusions hold the paint and the liquid does not stay, and new liquids are successively held in the recesses or protrusions. Therefore, it is possible to prevent the paint from flowing down and to apply the paint evenly and uniformly. Furthermore, since the crimp-like portion is formed, the strength of the bristle material can be increased, and a sudden drop of the paint can be prevented. In the invention of claim 2, since the spiral portion is formed, it is possible to increase the strength of the hair material and to prevent the paint from abruptly descending. In the invention of claim 3, since the linear portion is formed at the tip portion, the paint can flow smoothly onto the tip portion and can be painted. Therefore, it is difficult to leave hair marks on the surface to be coated, and uniform coating can be performed. Furthermore, in invention of Claim 4, since it is a brush using the bristle material for brushes in any one of Claims 1-3, there can exist the effect of the said Claims 1-3. Here, the meaning of claim 4 is that the brush part is formed using the hair material of any one of claims 1 to 3, and the hair material of claims 1 to 3 is mixed. The form of use is also included in the gist of claim 4. When the coating surface is large and it is desired to sufficiently retain the coating material in the hair material, it is more preferable to mix the hair because the gap (gap part) between the hair materials tends to occur.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a first embodiment of a bristle material for a brush according to the present invention. A bristle material for brush 110 made of a synthetic resin monofilament in which the concave portion 2 is formed in a spiral shape in the longitudinal direction of the outer peripheral surface, and a crimp-like portion 110a is formed on the bristle material 110. Further, linear portions 110b and 110c are formed at both ends. With the above configuration, the frictional force is increased when the concave portion 2 of the brush bristle material 110 comes into contact with the surface to be cleaned, so that the dirt can be scraped out efficiently and the liquid such as the cleaning liquid can be spiraled during cleaning. Since it is held by the concave portion 2, the cleaning performance is improved. Further, when used as a paint brush, the spiral recess 2 holds the paint and the liquid does not stay, and the new liquid is sequentially held in the recess 2, so that the paint can be prevented from dripping. At the same time, the paint can be applied evenly and uniformly. Furthermore, since it is formed in the crimp-like portion 110a, the strength of the hair material can be increased, and a sudden drop of the paint can be prevented.

  The brush hair material 110 has a uniform thickness over the entire length, polyolefin resin fibers such as polyethylene, polypropylene and polystyrene, polyester resin fibers such as polyethylene terephthalate, polybutylene terephthalate and polytrimethylene terephthalate, nylon 6, Made of polyamide resin fiber such as nylon 66, nylon 610, nylon 612, etc., synthetic resin monofilament such as acrylic fiber, fluorine fiber, urethane fiber, silicon fiber, etc., and the concave portion 2 is spiral and continuous in the longitudinal direction of the surface. Is formed.

  Synthetic resin monofilaments include polyolefin resin fibers such as polyethylene, polypropylene, and polystyrene, polyester resin fibers such as polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate, and polyamides such as nylon 6, nylon 66, nylon 610, and nylon 612. Resin fibers, acrylic fibers, fluorine fibers, urethane fibers, silicon fibers, and the like. In addition to the synthetic resin monofilament, the hair material 11b formed in a crimp shape may be made of natural fiber or chemical fiber as long as it is a material that can be used for cleaning, cleaning, liquid application, and the like. It can be set and used in a timely manner according to the purpose of use. Natural fibers are fibers made from plants, animals and minerals. Plant fibers include, for example, bast fibers such as ferns and palms, leaf fibers such as packing and sisal, fruit fibers such as palm, There are cotton, linen, asbestos. Animal fibers include, for example, pig hair, horse hair, and eyelash as hard hair, and goat hair, human hair, and eyelash as soft hair, and other types include wool and silk. The chemical fiber is a fiber made by chemical synthesis or processing from petroleum, coal, or the like, and includes synthetic fiber, fiber with abrasive material, conductive composite fiber, inorganic fiber, recycled fiber, and semi-synthetic fiber. Synthetic fibers are fibers spun from a synthetic polymer compound, and include synthetic fibers such as fluorine-based, polyamide-based, polyvinyl chloride-based, polypropylene-based, polyethylene-based, and aramid-based fibers. Abraded fibers include, for example, materials having grinding performance such as silicon carbide, alumina, diamond, and other minerals, silica, ceramics, and the like, which are adhered, kneaded, or mixed with fibers of a base material such as nylon or PBT. It is a fiber formed. The conductive composite fiber is a fiber having a performance capable of passing an electric current, and includes various carbon fibers, copper sulfide composite fibers, and silver composite fibers. The conductive composite fiber is sometimes referred to as a conductive fiber. The inorganic fiber is a fiber made of an inorganic compound, and examples thereof include various steel wires such as a piano wire, a hard steel wire, a stainless steel wire, and an oil temper wire, and a non-ferrous metal wire such as a brass wire and a phosphor bronze wire. Recycled fiber is a fiber made by melting wood, cotton, hemp, etc. made of natural cellulose, such as rayon. Semi-synthetic fiber is an intermediate between synthetic fiber and regenerated fiber. It is a fiber made by chemically treating natural polymeric substances such as cellulose to form esters, etc., and acetate fiber. Etc.

  FIG. 2 is a front view showing a second embodiment of the bristle material for a brush according to the present invention. In this embodiment, the brush bristle material 120 is made of a synthetic resin monofilament in which the concave portion 2 is spirally formed in the longitudinal direction of the outer peripheral surface, and the bristle material 120 is formed with a spiral portion 120a. Further, linear portions 120b and 120c are formed at both ends. By adopting the above configuration, the frictional force increases when the concave portion 2 comes into contact with the surface to be cleaned, so that dirt can be scraped out efficiently, and a liquid such as a cleaning liquid is held in the spiral concave portion 2 during cleaning. Therefore, the cleaning performance is improved. In addition, when this bristle material 120 is used for a brush for painting, the spiral recess 2 holds the paint and the liquid does not stay, and the new liquid is sequentially held in the recess 2, In addition to preventing the paint from flowing down, the paint can be uniformly applied evenly. Furthermore, since the spiral portion 120a is formed, it is possible to increase the strength of the hair material and to prevent the paint from dropping rapidly. In addition, the helical part 120a is a part in the state in which the fiber is spirally turned, and can impart elasticity and heat retention to the hair material.

  FIG. 3 is a front view showing the first embodiment of the brush 10 of the present invention. The brush bristle material 110 in this embodiment is the one described with reference to FIG. 1, and is a brush bristle material 110 made of synthetic resin monofilament in which the concave portion 2 is formed in a spiral shape in the longitudinal direction of the outer peripheral surface. Is the crimp part 110a, and the front end part and the rear end part are the straight parts 110b and 110c. Further, the brush 10 has a handle portion 12 and a brush bristle material 110 joined together by a joint portion 13. By setting it as the said structure, since the bristle material for brushes can be arranged closely in the straight part 110c of a rear-end part and it can plant in the junction part 13, the quantity of the hair material to hold | maintain can be increased, If the portion is the straight portion 110b, the gap between the hair materials can be reduced, and the occurrence of uneven coating can be prevented.

  In addition, the brush 10 can also take the form which mixes the hair material for brushes shown to (a)-(d) of FIG. The brush bristle material 130 shown in FIG. 4A is a linear bristle material made of synthetic resin monofilament. Moreover, the bristle material 140 for brushes shown in FIG.4 (b) consists of a synthetic resin monofilament which formed the recessed part 2 helically in the longitudinal direction of the outer peripheral surface of a linear bristle material. The brush bristle material 150 shown in FIG. 4C is a brush bristle material made of synthetic resin monofilament, and the bristle material 150 is formed with a crimp-like portion 150a. Further, linear portions 150b and 150c are formed at both ends. Further, the brush bristle material 160 shown in FIG. 4 (d) is the one described with reference to FIG. 1, and is a brush bristle material 160 made of a synthetic resin monofilament having a concave portion 2 formed in a spiral shape in the longitudinal direction of the outer peripheral surface. Thus, a crimp-like portion 160a is formed. Further, linear portions 160b and 160c are formed at both ends.

  FIG. 5 shows a third embodiment in which, instead of the concave portion 2 shown in FIG. 1, the convex portion 3 is continuously provided in a spiral manner on the outer peripheral surface of the crimping portion 170 a of the bristle material 170 for brush. Is. In addition, as a manufacturing method of the bristle material for brushes of the present embodiment, synthetic resin is heated, melt-spun, and a polishing paper (not shown) such as sandpaper is applied to the outer peripheral surface of the fiber at a predetermined temperature, What is necessary is just to wind up the fiber, forming the recessed part 2 or the convex part 3, and twisting. Further, it is possible to form by combining extrusion and twisting, and if the die shape is made uneven, the concave portion 2 and the convex portion 3 can be formed at the same time.

  Moreover, if the outer diameter of the synthetic resin monofilament forming the bristle material for the brush is 0.05 mm or more, it can be produced freely. Furthermore, if each twist angle of the spiral recessed part 2 and the convex part 3 is 20 degrees or less with respect to the longitudinal direction of a synthetic resin monofilament, it can manufacture efficiently. In addition, as the depth of the concave portion 2 is increased, the performance of holding a liquid such as a cleaning liquid is improved. However, if the depth is too deep, the waist is remarkably weakened or the synthetic resin monofilament is cut when it is produced. Therefore, it is desirable to keep it to 50% or less with respect to the major axis of the cross section of the synthetic resin monofilament.

  Moreover, although the holding | maintenance performance of liquid, such as a washing | cleaning liquid, improves, so that the height of the convex part 3 is too high, when the brush part 11 is formed with many bristle materials for brushes, between adjacent convex parts 3 will be shown. In this case, the liquid is held and the liquid flowability from the bristle material for the brush is remarkably deteriorated. Therefore, the height of the convex portion 3 is desirably 50% or less with respect to the major axis of the cross section of the synthetic resin monofilament.

  Since the bristle material for brushes in this embodiment is configured as described above, when it is used for cleaning brushes or the like, the concave portion 2 or the convex portion 3 is formed on the surface to be cleaned (not shown) or the like. Since the frictional force is increased by contact, dirt can be scraped out efficiently, and liquid such as cleaning liquid is held in the spiral concave portion 2 or convex portion 3 during cleaning, so the cleaning performance is greatly improved. To do. Moreover, since the spiral recessed part 2 or the convex part 3 can prevent that a liquid component accumulates in the recessed part 2 or the convex part 3 excessively in spiral shape, it can hold | maintain a new liquid part sequentially. In addition, when the brush bristle material 11a in the present embodiment is used for painting brushes, the spiral concave portion 2 or the convex portion 3 holds the paint, so that the paint can be prevented from flowing down and evenly and uniformly. Can be applied.

  In the first to third embodiments, since the concave portion 2 and the convex portion 3 are continuously arranged, the surface capable of holding the liquid is increased, thereby improving the liquid holding performance and cleaning. Performance and painting performance can be improved. Moreover, in this embodiment, since the thickness of the synthetic resin monofilament forming the bristle material for the brush is formed substantially uniform, the hair becomes stronger and the dirt scraping performance is improved. In the above-described embodiment, an example in which one recess portion 2 and one protrusion portion 3 are provided is shown. However, a plurality of recess portions 2 and protrusion portions 3 may be provided according to the viscosity of the cleaning liquid or paint used.

  Further, as shown in FIGS. 6A and 6B which are the fourth and fifth embodiments, the spiral concave portions 2 and the convex portions 3 are formed by brushes having crimp-shaped portions 180a and 190a. You may make it provide intermittently in the outer peripheral surface of the hair material 180,190 for hair. In this case, since the edge part of the recessed part 2 or the convex part 3 increases, dirt can be scraped out more efficiently. Further, when the brush bristle materials 180 and 190 in the fourth and fifth embodiments are used for painting brushes, the paint holding the edge portion can be prevented from falling off, so that the paint has a high holding performance. be able to.

  Moreover, in 1st Embodiment-5th Embodiment, it is also possible to form the recessed part 2 and the convex part 3 of the bristle material for brushes by making only the right twist or only the left twist. As described above, according to the first to fifth embodiments, the edge portion of the concave portion 2 or the convex portion 3 is present at various locations, and therefore, the edge portion is cleaned from various angles. It comes in contact with the dirt on the surface, and the cleaning performance is dramatically improved.

  FIG. 7 is a perspective view of the bristle material for brushes 200 to 230 according to the sixth to ninth embodiments of the present invention. The concave or convex portions are at least two in the direction of right twist, left twist, and straight direction. The other configurations and materials are the same as those in the first embodiment and the second embodiment, and the description thereof will be omitted. FIG. 7A shows an example in which a left-handed concave portion 2 and a right-twisted concave portion 2 are continuously provided on the outer peripheral surface of the brush bristle material 200 on which the crimp-shaped portion 200a is formed. FIG. 7B shows an example in which a left-handed convex part 3 and a right-handed convex part 3 are continuously provided on the outer peripheral surface of the brush bristle material 210 on which the crimp-like part 210a is formed. ) Shows an example in which the left-handed concave portion 2, the linear concave portion 2a, and the right-twisted concave portion 2 are continuously provided on the outer peripheral surface of the brush bristle material 220 on which the crimp-shaped portion 220a is formed. 7 (d), the left-handed convex part 3, the straight-shaped convex part 3a, and the right-twisted convex part 3 are continuously provided on the outer peripheral surface of the brush bristle material 230 on which the crimp-shaped part 230a is formed. An example is shown. 7A to 7D, the concave portion 2 and / or the convex portion 3 are formed in a meandering manner on the outer peripheral surface of the brush bristle material.

  As described above, according to the sixth embodiment to the ninth embodiment, the edge portion of the concave portion 2 or the convex portion 3 comes to be in various places, so that the edge portion can be cleaned from various angles. As a result, the cleaning performance is dramatically improved. Moreover, since liquids, such as a washing | cleaning liquid and a coating material, are hold | maintained at an edge part, it can have a high liquid holding performance.

  FIG. 8 is a perspective view showing the bristle materials for brushes 240 and 250 of the tenth embodiment and the eleventh embodiment. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted. In this embodiment, as shown in FIGS. 8A and 8B, the thickness of the synthetic resin monofilament forming the bristle material 240 and 250 for the brush having the crimp-shaped portions 240a and 250a is made non-uniform. As a result, the surface area of the brush bristle material 11a, that is, the contact area between the surface of the brush bristle material 11a and dirt is increased, and the dirt removal performance and the performance of retaining liquids such as cleaning liquid and paint are improved. improves.

  FIG. 9 is a front view showing the bristle material for brush 260 of the twelfth embodiment. As shown in this figure, the lowermost portion of the concave portion 2 of the synthetic resin monofilament brush hair material 260 in which the concave portion 2 is spirally formed in the longitudinal direction of the outer peripheral surface is a tapered portion 5. By comprising in this way, there is no accumulation of the coating material 6, and it flows smoothly. Further, by forming the tapered portion 5 at the tip of the brush bristle material 260, it is difficult to leave a mark of the hair material on the surface to be painted, and uniform coating can be performed.

  In the first to twelfth embodiments, the example in which either the concave portion 2 or the convex portion 3 is provided on one outer peripheral surface of the synthetic resin monofilament that forms the bristle material for the brush is shown. The present invention is not limited, and both the concave portion 2 and the convex portion 3 may be provided on the outer peripheral surface of one synthetic resin monofilament.

  In addition, it cannot be overemphasized that various embodiment can be taken in the range which does not deviate from the meaning of this invention. For example, in the form of FIGS. 7A to 7D, the concave part 2 or / the convex part 3 is formed in a meandering shape on the outer peripheral surface of the brush bristle material 11a. In the present invention, the present invention can be adopted as an embodiment in which a concave portion or a convex portion is formed in a spiral shape in the longitudinal direction of the outer peripheral surface.

  The brush hair material and brush of the present invention have a hair material made of a synthetic resin monofilament, and are used for cleaning, cleaning, liquid application, and the like.

The front view which shows 1st Embodiment of the bristle material for brushes of this invention. The front view which shows 2nd Embodiment of the bristle material for brushes of this invention. The front view which shows 1st Embodiment of the brush of this invention. The front view which shows four types of bristle materials for brushes used for the brush of 1st Embodiment. Explanatory drawing which shows 3rd Embodiment of the bristle material for brushes. Explanatory drawing which shows 4th and 5th embodiment of the bristle material for brushes. Explanatory drawing which shows 6th-9th embodiment of the bristle material for brushes. Explanatory drawing which shows 10th and 11th embodiment of the bristle material for brushes. Explanatory drawing which shows 12th Embodiment of the bristle material for brushes.

Explanation of symbols

2, 2a Concave part 3, 3a Convex part 5 Tapered part 6 Paint 10 Brush 12 Handle part 13 Joint part 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240 , 250, 260 Brush hair material 110a, 130a, 140a, 150a, 160a, 170a, 180a, 190a, 200a, 210a, 220a, 230a, 240a, 250a Crimp-shaped portions 110b, 110c, 120b, 120c, 150b, 150c, 160b, 160c Straight part 120a Spiral part

Claims (4)

  A bristle material for a brush made of a synthetic resin monofilament in which concave portions or / and convex portions are formed in a spiral shape in the longitudinal direction of the outer peripheral surface, wherein the bristle material is formed with a crimp-shaped portion. Brush hair material.   A hair material for a brush made of a synthetic resin monofilament in which concave portions or / and convex portions are formed in a spiral shape in the longitudinal direction of the outer peripheral surface, wherein the hair material has a spiral portion formed therein. Brush hair material.   A hair material for a brush made of a synthetic resin monofilament in which a concave portion or / and a convex portion are formed in a spiral shape in the longitudinal direction of the outer peripheral surface, and a linear portion is formed at the tip of the hair material, 3. A brush bristle material according to claim 1, wherein a crimp-like part or / and a spiral-like part are formed in addition to the tip part.   In the brush used for coating etc., this brush has a brush part which bundles hair material, and a handle part, Comprising: In the brush part, in any 1 paragraph of Claims 1-3 A brush characterized by using the bristle material for brushes described.

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