WO2017130901A1 - Matériau de soies pour brosse, et brosse l'utilisant - Google Patents

Matériau de soies pour brosse, et brosse l'utilisant Download PDF

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Publication number
WO2017130901A1
WO2017130901A1 PCT/JP2017/002111 JP2017002111W WO2017130901A1 WO 2017130901 A1 WO2017130901 A1 WO 2017130901A1 JP 2017002111 W JP2017002111 W JP 2017002111W WO 2017130901 A1 WO2017130901 A1 WO 2017130901A1
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WIPO (PCT)
Prior art keywords
brush
bristle material
resin
region
fiber
Prior art date
Application number
PCT/JP2017/002111
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English (en)
Japanese (ja)
Inventor
山本健雄
土岐美鈴
柴田剛志
増田正人
山中博文
Original Assignee
東レ・モノフィラメント株式会社
東レ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 東レ・モノフィラメント株式会社, 東レ株式会社 filed Critical 東レ・モノフィラメント株式会社
Priority to JP2017509050A priority Critical patent/JPWO2017130901A1/ja
Publication of WO2017130901A1 publication Critical patent/WO2017130901A1/fr

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    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/04—Preparing bristles
    • A46D1/05—Splitting; Pointing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers

Definitions

  • the present invention relates to a brush bristle material suitable for various brushes including a toothbrush and a brush using the same.
  • a technique using a monofilament of synthetic fiber as a hair material for a brush is widely known.
  • a brush using such a brush bristle material for example, a toothbrush, a tooth cleaning effect by a hair tip, and a unique tactile sensation suitable for the object to be cleaned and a massage effect such as gums without damaging the object to be cleaned Is desired to be excellent in a balanced manner.
  • the bristle material for the brush is formed of a monofilament made of a single material up to the hair tip, it may be difficult to satisfy such a requirement.
  • the brush bristle material is made thicker, the brush becomes stronger and the effect of cleaning the tooth flat surface and the massage effect such as gums are enhanced.
  • the cleaning effect between the teeth may be reduced, or the feeling of touching the gums will be too strong, making it difficult to obtain a soft and unique touch that makes it difficult to damage the gums.
  • the hair material for the brush is made thin with a single material monofilament up to the bristles, the cleaning effect between the teeth can be enhanced, but the waist of the brush hair material becomes weaker over the entire length, and the gums There is a risk that the massage effect such as, etc. may be reduced, or the durability of the hair material itself may be reduced.
  • the cleaning effect between the teeth usually it is required to make the hair tip soft, but if so, it is good for those who have weak gums due to periodontal disease, There is a risk that many people may feel unsatisfactory hair at their ends.
  • sea-island composite fibers are used as the bristle material for the brush, and the sea-island component is contained at the base of the bristle when used for the brush.
  • a bristle material for a brush having an integrated composite fiber structure in which a large number of islands are exposed and separated at the tip Patent Document 1
  • the brush bristle material proposed in Patent Document 1 has a good balance between an excellent cleaning effect such as the interdental space and an excellent massage effect such as gums by keeping the fluff of the hair tips above a certain level. It is difficult to achieve both.
  • Patent Documents 5 to 8 Conventionally, composite fibers in which different resin phases are arranged radially in a cross section are also known.
  • Patent Documents 5 to 8 do not pay attention to and consider the development of the brush hair material, and only the knowledge of the composite fiber described in these patent documents is a problem related to the conventional brush hair material as described above. It will not lead to the elimination of
  • the object of the present invention is to focus on the problems in the conventional brush bristle material, and on the recently proposed sea-island composite fiber manufacturing technology that can be designed virtually freely, for brushes.
  • a suitable bristle material in particular, a brush bristle material that can balance the excellent cleanability of the gap portion of the object to be cleaned with the excellent massage effect and unique tactile sensation on the object to be cleaned. To provide a brush that was.
  • a bristle material for a brush according to the present invention is formed of at least two types of resin phases, and a region formed of the at least two types of resin phases in a fiber cross section is in a circumferential angle direction. It consists of what is comprised using the area
  • the conjugate fiber constituting the bristle material is formed of at least two types of resin phases, at least two types of just using this conjugate fiber without blending are used. It is possible to construct a hair material that expresses a friction coefficient, and it is possible to construct a hair material that has a unique tactile sensation and polishing comfort, and that it is formed from a different resin phase. It is possible to construct an excellent hair material.
  • the bristle material is composed of a region-divided cross-section composite fiber in which a region formed of at least two kinds of resin phases in the fiber cross section is divided into 2 to 32 regions in the circumferential angle direction.
  • the outer peripheral surface of the bristles is formed in a form in which resin phase portions with different friction coefficients are arranged alternately in a region division type, or one resin phase portion with different resin phase portions is left. It is possible to remove the other resin phase part at the tip of the hair and form a space between the one resin phase part of the resin phase part arranged in the region division type in the circumferential direction so that dirt can be captured.
  • various types of hair tips suitable for brushes can be configured.
  • a bristle material for a brush that can achieve a good balance between the excellent cleaning performance of the gap portion of the object to be cleaned and the excellent massage effect for the object to be cleaned.
  • the region-divided cross-section composite fiber preferably has a diameter in the range of 50 to 1,000 ⁇ m, more preferably in the range of 80 to 500 ⁇ m. If the diameter of the composite fiber is less than 50 ⁇ m, the waist of the composite fiber portion itself when used in a brush becomes too weak, and the cleaning effect may be lowered depending on the application. When the diameter of the composite fiber exceeds 1,000 ⁇ m, the composite fiber part itself becomes too strong when used in a brush, and the hair tip part is cleaned although it depends on the shape of the tip part forming the hair tip. There is a possibility that the object to be cleaned is easily damaged by being strongly pressed against the object side.
  • hair ends in various specific forms are formed at one or both ends in the fiber longitudinal direction of the hair material.
  • the length in the direction is preferably in the range of 0.5 to 10 mm, and more preferably in the range of 1 to 5 mm.
  • the length of the bristles is shorter than 0.5 mm, it is difficult to obtain an excellent cleaning property for fine parts such as a space between the teeth by the bristles, and it is difficult to obtain a good soft touch.
  • the length of the bristles is longer than 10 mm, the bristles that tend to weaken the waist may become too long, and the bristles will be deformed too much, resulting in a cleaning effect (e.g., dirt).
  • the effect of entanglement) and massage effects such as gums may be insufficient.
  • At least one end portion in the fiber longitudinal direction of the bristle material for brushes can be tapered to have a tapered shape, and the outer diameter in the cross section is substantially extended to the tip of the bristle material. It can also be formed in a shape maintained at the same diameter. If it is formed in a tapered taper shape, it becomes easy to obtain excellent cleaning properties for smaller parts, and if it is formed in a shape that is maintained at substantially the same diameter up to the tip, it can be used as a space for scraping and capturing dirt. It becomes easier to form the groove.
  • the at least two types of resin phases resin phases having various characteristics can be adopted.
  • the form in which the at least two kinds of resin phases are made of resin phases having different friction coefficients the form in which the at least two kinds of resin phases are made of resin phases having different colors, and the at least two kinds of resin phases are chemically dissolved in each other.
  • Forms composed of resin phases with different speeds can be adopted.
  • a resin region composed of at least one type of resin phase is in the fiber longitudinal direction in the form of the region divided at least at one end in the fiber longitudinal direction. It is possible to have a form protruding into the surface. Examples of various forms will be described later.
  • the length in the fiber longitudinal direction of the resin region protruding in the fiber longitudinal direction is preferably in the range of 0.5 to 10 mm, and more preferably in the range of 1 to 5 mm.
  • the type of the resin is not particularly limited.
  • a composite composed of two types of resin phases having different drug dissolution rates In the case of a fiber, a mode in which one resin phase is made of a polyester resin and the other resin phase is made of a resin having a slower drug dissolution rate than the polyester resin can be exemplified. More specifically, the one resin phase is polybutylene terephthalate (PBT) and the other resin phase is nylon (Ny), or the one resin phase is polyethylene terephthalate (PET).
  • a form in which the resin phase is made of polybutylene terephthalate (PBT) can be exemplified.
  • PBT polybutylene terephthalate
  • dissolution process you may perform the process which twists a hair material before a process or a process.
  • the cross-sectional outer shape of the region-divided cross-section composite fiber is substantially circular so that various forms will be described later.
  • the cross-sectional outer shape can be arbitrarily set according to the application and intended use.
  • the present invention also provides a brush in which the brush hair material according to the present invention as described above is used at least in part.
  • the brush according to the present invention can achieve a good balance between the excellent cleaning performance of the gap portion of the object to be cleaned and the excellent massage effect for the object to be cleaned. Since possible bristle material is used, it is suitable as various brushes such as a toothbrush, in particular, a rotary electric toothbrush and a brush for precision cleaning. In particular, when applied to a rotary electric toothbrush, a remarkably excellent cleaning effect can be exhibited.
  • a range of 1 to 50 mm is exemplified as a preferable range of bristle length (length from the brush root to the bristles), more preferably The range is 5 to 35 mm.
  • the present invention it is possible to achieve a good balance between the excellent cleaning performance of the gap portion of the object to be cleaned and the excellent massage effect for the object to be cleaned. It is possible to provide a bristle material for a brush that is possible and excellent in appearance.
  • various brushes using at least a part of the brush bristle material as described above can be provided, and in particular, a brush suitable as a toothbrush, especially a rotary electric toothbrush, a brush for precision cleaning, and the like. Can be provided.
  • FIG. 1 shows a bristle material for a brush according to an embodiment of the present invention
  • FIG. 1A is a schematic side view of one end portion of the bristle material
  • FIG. 1B is one end portion of the bristle material of FIG. FIG.
  • It is a schematic block diagram which shows the flocking method at the time of using the bristle material for brushes for a toothbrush.
  • the schematic side view (FIG. 3 (A), (B1), (C)) and schematic perspective view (FIG. 3 (B2)) of the one end part of the bristle material which shows another various form of the bristle material for brushes concerning this invention
  • It is a schematic cross-sectional view which shows another various form example of the bristle material for brushes concerning this invention.
  • FIG. 1 shows a bristle material 1 for a brush according to an embodiment of the present invention
  • FIG. 1 (A) shows one end of the bristle material 1.
  • the brush bristle material 1 is formed of at least two types of resin phases 2 and 3 (in this embodiment, two types of resin phases having different color tones and / or friction coefficients).
  • the region formed by the two types of resin phases 2 and 3 is divided into four regions in the circumferential angle direction (in the illustrated example, the resin phases 2 and 3 alternate in the circumferential angle direction at a circumferential angle of 90 degrees.
  • the region-divided cross-section composite fiber 4 is divided into four regions).
  • the resin phases 2 and 3 are both made of polybutylene terephthalate (PBT) and have different color tones and / or friction coefficients.
  • the resin phases 2 and 3 are equally divided at a circumferential angle of 90 degrees, but are not limited to equal division.
  • the region-divided cross-section composite fiber 4 having such a configuration is designed so that the size, arrangement, cross-sectional shape, arrangement density, and the like of the island part relative to the sea part are substantially freely designed as described in Patent Documents 2 to 4 described above. It can be made intentionally using possible techniques.
  • the region-divided cross-section composite fiber 4 constituting the brush bristle material 1 is configured to extend to the tip of the brush bristle material with substantially the same diameter.
  • At least one end in the longitudinal direction of the fiber may be formed in a tapered shape.
  • Such a tapered taper portion can be formed, for example, by sequentially dissolving a predetermined length portion of one end portion of the hair material 1 by alkali treatment or by mechanical polishing.
  • the resin phases 2 and 3 appear alternately, and different characteristics (for example, color tone and / or friction coefficient) of the resin phases 2 and 3 are alternately exhibited in the outer circumferential direction, so that an excellent design can be obtained. Or / and a unique feel is expressed.
  • the brush bristle material 1 configured as described above is used at least in part for the production of various brushes.
  • a method for flocking a brush bristle material on a brush component two types of methods are typically known, but these two types of methods are illustrated with reference to the case of use in a toothbrush as an example. This will be described with reference to FIG.
  • FIG. 2 (A) shows a toothbrush 13 in which the brush bristle material 11 is planted on the head part of the toothbrush constituting member 12.
  • FIG. 2 (A) a- There are two types of methods as shown in FIGS. 2B and 2C which are enlarged cross-sectional views along the a line.
  • FIGS. 2B and 2C are two types of methods as shown in FIGS. 2B and 2C which are enlarged cross-sectional views along the a line.
  • the brush bristle material 11 folded in half is inserted into the flock hole 14 and the brush bristle material 11 is fixed to the toothbrush component 12 with a fixture called a flat wire 15. .
  • the completed toothbrush is usually called a flat wire toothbrush.
  • both ends of the brush bristle material 11 prepared in advance are the bristles of the brush.
  • one end portion of the brush bristle material 11 is inserted into the through hole 16 of the head surface side member 12a of the toothbrush constituting member 12, and the end portion of the brush bristle material 11 thus inserted is inserted.
  • a heating device (not shown) is applied to form a lump for preventing or fixing called a roasted ball 17, and after that, the head portion back side member 12b is joined to conceal the roasted ball 17 to complete a toothbrush product.
  • the completed toothbrush is usually called a flat wire toothbrush.
  • one end of the brush bristle material 11 prepared in advance serves as a brush tip.
  • the bristle material 1 for brushes according to the present invention is used for a flat toothbrush
  • the special form of the bristle portion such as the tapered taper portion described above is formed at both ends of the bristle material 1 for brushes.
  • a special form of the hair tip is formed at one end of the brush bristle material 1.
  • the composite fiber 4 constituting the bristle material 1 is formed of the two types of resin phases 2 and 3, so it is not mixed. In both cases, it is possible to configure the hair material 1 that expresses two kinds of color tones and / or friction coefficients only by using this composite fiber 4, and it is possible to configure the hair material 1 that is excellent in unique touch and polishing comfort.
  • the outer peripheral surface is formed of different resin phases 2 and 3, a stripe pattern appears on the outer peripheral surface including the bristle portion, and the hair material 1 that is excellent in appearance is configured. It becomes possible.
  • region formed with the two types of resin phases 2 and 3 in a fiber cross section were divided
  • a region formed of at least two types of resin phases is configured using a region-divided cross-section composite fiber that is divided into regions of 2 to 32 in the circumferential angle direction. As long as it can take various forms.
  • FIG. 3 illustrates various forms.
  • the region formed by the two types of resin phases 22 and 23 in the fiber cross section is composed of a region-divided cross-section composite fiber 24 divided into four regions in the circumferential angle direction, At least one end of the brush bristle material 21 in the fiber longitudinal direction is formed in a tapered shape 25.
  • the taper taper portion 25 can be formed by, for example, sequentially dissolving a predetermined length portion at one end of the bristle material 21 by alkali treatment or by mechanical polishing.
  • the resin phases 22 and 23 are made of, for example, the same kind of polyester resin having different color tone or / and friction coefficient, for example, color tone or / And polybutylene terephthalate (PBT) having different friction coefficients.
  • PBT polybutylene terephthalate
  • two types of resin phases 32 and 33 are made of a resin phase 32 (for example, polybutylene terephthalate (PBT)) that is dissolved by a chemical, for example, alkali. It is configured using a region-divided cross-section composite fiber 34 composed of a resin phase) and a resin phase 33 that is not dissolved by alkali (for example, a resin phase made of nylon (registered trademark) Ny).
  • a resin phase 32 for example, polybutylene terephthalate (PBT)
  • alkali for example, a resin phase made of nylon (registered trademark) Ny.
  • a phase 32 portion is formed in the space portion, and the illustrated hair tip portion is formed as a protruding portion 35 protruding in the fiber longitudinal direction in the form of a region in which the resin phase 33 portion is divided at least at one end in the fiber longitudinal direction. it can.
  • the bristles having such a configuration can exhibit a remarkable cleaning effect (scraping effect of dirt, scavenging effect of dirt) particularly when used in a rotary electric toothbrush.
  • the brush bristle material 41 shown in FIG. 3 (C) two types of resin phases 42 and 43 having different drug dissolution rates are used in the same region division form as shown in FIGS. 3 (B1) and (B2).
  • the resin phase 42 having a higher alkali dissolution rate is made of polyethylene terephthalate (PET), and the resin phase 43 having a lower alkali dissolution rate is made of, for example, polybutylene terephthalate (PBT). It is comprised using.
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • the illustrated hair tip portion can be configured. Compared with the hair tip part of the form shown to FIG. 3 (B1) and (B2), the hair tip part of such a form can improve the cleaning performance with respect to a fine clearance gap part further.
  • FIG. 4 illustrates various forms.
  • the number of divisions of the divided regions formed by the two types of resin phases 52 and 53 is 6, and each divided region is a circle. It is equally distributed at a circumferential angle of 60 degrees.
  • the number of divisions of the divided regions formed by the two types of resin phases 62 and 63 is 8, and each divided region is a circle. It is equally distributed at a circumferential angle of 45 degrees.
  • the divided regions formed by the two types of resin phases 72 and 73 are arranged in the circumferential direction with a larger number of divisions. It is arranged. As described above, the optimum number of divisions can be designed in the range of 2 to 32 according to the application and purpose of use.
  • the number of divisions of the divided regions formed by the two types of resin phases 82 and 83 is 8, and the resin phase 82
  • the circumferential angles of the divided region by and the divided region by the resin phase 83 are set to different angles.
  • the number of divisions of the divided region formed by the two types of resin phases 92 and 93 is 2, and the division by the resin phase 92
  • the circumferential angles of the region and the region divided by the resin phase 93 are set to greatly different angles.
  • the circumferential angle of the divided region by each resin phase can be set substantially arbitrarily.
  • various cross-sectional forms can be adopted, and forms other than the illustrated examples and various combined forms of the illustrated examples can be adopted. These forms can be optimally designed according to the application and intended use.
  • Table 1 summarizes typical characteristics of some of the various examples as described above when the brush bristle material according to the present invention is applied to a toothbrush.
  • Embodiment 1 having a form equivalent to the form shown in FIG. 1, hair ends having two kinds of color tones and / or friction coefficients can be obtained, and an excellent appearance (designability) of polishing comfort, unique tactile sensation, and stripe tone ) Is obtained.
  • Embodiment 2 having the same form as that shown in FIG. 3A, in addition to the performance in Embodiment 1, it is possible to further improve the cleaning performance with respect to fine parts such as a space between teeth. In addition, an appropriate massage effect can be obtained, and it is possible to achieve both the cleanability and the massage effect with respect to fine parts in a well-balanced manner.
  • Embodiment 3 having the same form as that shown in FIGS. 3 (B1) and 3 (B2), an excellent massage effect can be obtained, and the cleaning performance can be further improved with respect to the tooth surface, etc.
  • a hair end portion excellent in (scraping and capturing of dirt) can be obtained.
  • Embodiment 3 can exhibit a remarkable cleaning effect (scraping effect of dirt, scavenging effect of dirt) particularly when used in a rotary electric toothbrush.
  • ⁇ indicates that the characteristic is equal to or higher than that of the comparison target, and ⁇ indicates that it is significantly superior to the comparison target.
  • the eluted fiber was cooled and solidified in water, it was stretched 4.5 times in 60 ° C warm water as the first step and 120 ° C in a dry atmosphere as the second step, and then relaxed heat set in a dry heat atmosphere To obtain a composite fiber.
  • the fibers were bundled in a straight line with a bundle diameter of 45 mm and packaged, and then cut into an arbitrary length.
  • Example 4 which formed the taper taper shape by mechanical polishing, after finishing the composite fiber cut by the method mentioned later on a toothbrush, finishing process is Z.
  • SWORD 116 manufactured by Zahoranski Co., Ltd.
  • Example 5 after planting the conjugate fiber cut by the method described later, the hair tips were cut so that the hair length was 13 mm, and deburring was performed. Table 2 shows the characteristics of the obtained brush hair material.
  • a PBT fiber was dipped in a caustic soda solution in the same manner as described above, and a bristle material for a brush having both ends tapered into a tapered shape was produced.
  • the brush bristle material obtained by the above method was set in a flat wire type flocking machine, a predetermined number (about 15 to 40) was picked, and folded into the flock hole of the toothbrush head along with the flat wire and driven. .
  • a predetermined number about 15 to 40
  • As the toothbrush head one having a flocked portion with a diameter of 1.5 mm and 8 rows and 4 columns was used.
  • Table 2 shows the bristle length (mm) and the number of flocks (lines / hole) of the toothbrushes produced in Examples and Comparative Examples.
  • the present invention can be applied to any brush and is particularly suitable for various toothbrushes including a rotary electric toothbrush, a brush for precision cleaning, and the like.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Brushes (AREA)

Abstract

La présente invention concerne un matériau de soies pour brosse. Le matériau de soies pour brosse est caractérisé en ce qu'il est conçu au moyen d'une fibre composite de type division régionale qui est formée d'au moins deux types de phase de résine. Au niveau d'une section transversale horizontale de fibre, des régions formées à partir des au moins deux types de phase de résine sont divisées dans des directions angulaires circonférentielles en 2 à 32 régions. L'invention porte en outre sur une brosse qui utilise ledit matériau de soies pour brosse. La présente invention porte en particulier sur un matériau de soies pour brosse qui permet d'obtenir un bon équilibre entre d'excellentes propriétés de nettoyage au niveau des régions d'écartement d'un objet à nettoyer et d'excellents effets de massage par rapport à l'objet à nettoyer, ainsi qu'une sensation unique, etc., et qui présente un excellent aspect. L'invention a également trait à une brosse qui utilise ledit matériau de soies pour brosse.
PCT/JP2017/002111 2016-01-25 2017-01-23 Matériau de soies pour brosse, et brosse l'utilisant WO2017130901A1 (fr)

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JP2017509050A JPWO2017130901A1 (ja) 2016-01-25 2017-01-23 ブラシ用毛材及びそれを用いたブラシ

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JP2016011527 2016-01-25
JP2016-011527 2016-01-25

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WO2017130901A1 true WO2017130901A1 (fr) 2017-08-03

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08503145A (ja) * 1992-11-05 1996-04-09 ザ、ジレット、カンパニー 改良されたぶらし繊条
JP2001505967A (ja) * 1996-12-12 2001-05-08 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー 共押出しモノフィラメント
US6772467B1 (en) * 1999-07-13 2004-08-10 Coronet-Werkc Gmbh Brush bristle, method of making same and brush comprising such brush bristles
JP2006149419A (ja) * 2004-11-25 2006-06-15 Sunstar Inc 歯ブラシ
JP2009529612A (ja) * 2006-03-16 2009-08-20 ブラウン ゲーエムベーハー 歯ブラシ用マルチフィラメントブリストル

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08503145A (ja) * 1992-11-05 1996-04-09 ザ、ジレット、カンパニー 改良されたぶらし繊条
JP2001505967A (ja) * 1996-12-12 2001-05-08 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー 共押出しモノフィラメント
US6772467B1 (en) * 1999-07-13 2004-08-10 Coronet-Werkc Gmbh Brush bristle, method of making same and brush comprising such brush bristles
JP2006149419A (ja) * 2004-11-25 2006-06-15 Sunstar Inc 歯ブラシ
JP2009529612A (ja) * 2006-03-16 2009-08-20 ブラウン ゲーエムベーハー 歯ブラシ用マルチフィラメントブリストル

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