WO2017111009A1 - Matériau de crin de brosse, brosse l'utilisant, et procédé de fabrication dudit matériau de crin de brosse - Google Patents

Matériau de crin de brosse, brosse l'utilisant, et procédé de fabrication dudit matériau de crin de brosse Download PDF

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Publication number
WO2017111009A1
WO2017111009A1 PCT/JP2016/088358 JP2016088358W WO2017111009A1 WO 2017111009 A1 WO2017111009 A1 WO 2017111009A1 JP 2016088358 W JP2016088358 W JP 2016088358W WO 2017111009 A1 WO2017111009 A1 WO 2017111009A1
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WIPO (PCT)
Prior art keywords
island
sea
composite fiber
brush
bristle material
Prior art date
Application number
PCT/JP2016/088358
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English (en)
Japanese (ja)
Inventor
山本健雄
土岐美鈴
田中嘉洋
増田正人
柴田剛志
松浦知彦
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 KR1020187019636A priority Critical patent/KR20180097626A/ko
Priority to JP2017508118A priority patent/JPWO2017111009A1/ja
Priority to CN201680076077.4A priority patent/CN108471871A/zh
Publication of WO2017111009A1 publication Critical patent/WO2017111009A1/fr

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    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • 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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/04—Preparing bristles
    • A46D1/055—Combing; Mixing; Sorting
    • 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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to a brush bristle material suitable for various brushes including a toothbrush, a brush using the same, and a method for producing the brush bristle material.
  • 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 will be reduced, it will be difficult to obtain excellent scraping performance of dirt due to the hair tip, the touch feeling to the gums will become too strong and the gums etc. will be easily damaged There is.
  • 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.
  • a brush bristle material in which the island part of the sea-island composite fiber has an irregular cross-sectional shape to improve the scraping performance of dirt by the hair tip has also been proposed (Patent Document 2).
  • the island is distributed over substantially the entire region of the cross section of the sea-island composite fiber used as the bristle material for the brush, and the island is actually exposed at the tip of the bristle.
  • the sea that supports the exposed island with the bristle root may be torn and durable. The problem remains that there is a risk of inadequate performance.
  • Patent Document 3 recently proposed while paying attention to the excellent features and remaining problems of the bristle material for brushes as described in Patent Documents 1 and 2 in the past. Focusing on the sea-island composite fiber manufacturing technology that allows the islands to be designed virtually freely, such as soft touch and other characteristics that do not damage the object to be cleaned, and excellent dirt scraping performance
  • the object is to provide a bristle material for brushes having excellent cleaning properties and excellent durability, a brush using the same, and a method for producing the bristle material for brushes.
  • a brush hair material is for a brush in which islands at one or both longitudinal ends of sea-island composite fibers made of two or more types of resins having different drug dissolution rates are exposed.
  • An outer peripheral surface that is a bristle material, the sea-island composite fiber has a plurality of edge-attached island parts having a cross-sectional shape with an edge part in the vicinity of the outer peripheral surface of the sea-island composite fiber, and forms the outer peripheral surface of the sea-island composite fiber
  • the formation part is composed only of the sea part, and in the cross section of the sea-island composite fiber, the diameter Di of the circumscribed circle of the edged island part immediately adjacent to the outer peripheral surface formation part and the thickness Ts of the sea part of the outer peripheral surface formation part,
  • the ratio Ts / Di is 0.3 or more. This ratio Ts / Di is preferably 0.5 or more, and more preferably 0.8 or more.
  • the object to be cleaned is in contact with the object to be cleaned is a weakly exposed island part. Is hard to damage and gives a soft touch.
  • the cross-sectional shape of the plurality of island portions in the vicinity of the outer peripheral surface of the sea-island composite fiber is a cross-sectional shape having an edge portion, so that the effect of scraping off dirt by the edge portion of the exposed island portion is expressed, The cleaning performance is further improved including the scraping performance.
  • the outer peripheral surface forming part that forms the outer peripheral surface of the sea-island composite fiber is composed of only the sea part, and in the cross section of the sea-island composite fiber, the diameter Di of the circumscribed circle of the edged island part immediately adjacent to the outer peripheral surface formation part and When the ratio Ts / Di with the sea thickness Ts of the outer peripheral surface forming portion is set to 0.3 or more, the island portion with the edge immediately adjacent to the outer peripheral surface forming portion is the root portion of the exposed island portion where it is exposed. And the sea part which supports the exposed island part due to the external force when it is covered with the sea part more than the predetermined thickness in the vicinity part (part on the composite fiber side) and an external force is applied to the exposed island part.
  • the island part of the sea-island composite fiber is unevenly distributed in a portion near the central part other than the outer peripheral surface forming part formed by the sea part having the predetermined thickness or more in the cross section of the sea-island composite fiber, Since the unevenly distributed island part is exposed at the tip of the bristle material, the exposed island part has characteristics such as soft touch that does not damage the object to be cleaned, and the dirt scraping performance
  • the excellent durability by the outer peripheral surface formation part which consists of the sea part more than predetermined thickness is implement
  • At least one edge portion of the edge-attached island portion in the immediate vicinity of the outer peripheral surface forming portion (preferably the edge portions of all the edge-attached island portions in the immediate vicinity of the outer peripheral surface forming portion are present).
  • It is preferably directed outward in the radial direction of the sea-island composite fiber. If comprised in this way, the edge part of an island part with an edge can exhibit the dirt scraping performance by an edge part more effectively at the time of use of a brush, and the cleaning nature including dirt scraping performance is further improved.
  • the distance between adjacent islands in the cross section of the sea-island composite fiber is preferably in the range of 0.5 to 50 ⁇ m, more preferably in the range of 1 to 30 ⁇ m. It is. If the distance between adjacent islands is shorter than 0.5 ⁇ m, when the sea part of the sea-island composite fiber is dissolved and the island part of the fiber end part is exposed, there is a possibility that a branch failure of the exposed island part may occur due to undissolved residue. When the branch failure of an exposed island part arises, there exists a possibility that the above-mentioned outstanding cleaning property, the outstanding tactile sense, etc. may be impaired. If the distance between adjacent islands exceeds 50 ⁇ m, there will be no risk of branch failure in the exposed islands, but dirt held on the exposed islands due to scraping etc. will easily pass through between adjacent islands, and the cleaning performance is accordingly increased. May decrease.
  • the exposed length of the island portion exposed at one or both ends in the longitudinal direction of the sea-island composite fiber is preferably in the range of 0.5 to 10 mm. More preferably, it is in the range of 1 to 5 mm.
  • the exposed length of the island portion is shorter than 0.5 mm, it is difficult to obtain an excellent cleaning property for fine parts such as a space between the exposed island portions, and it is difficult to obtain a good soft touch.
  • the exposed length of the island portion is longer than 10 mm, the exposed island portion with a weak waist may become too long, and the exposed island portion is deformed too much, and the cleaning effect by the exposed island portion (for example, the effect of entwining dirt) In addition, the massage effect such as gums may be insufficient.
  • the diameter Di of the circumscribed circle of the edged island portion immediately adjacent to the outer peripheral surface forming portion is preferably in the range of 10 to 300 ⁇ m, more preferably 20 to 100 ⁇ m. Range. If the diameter of the island part with an edge is less than 10 ⁇ m, the waist of the exposed island part becomes too weak, and the waist necessary for the dirt scraping effect by the edge part (hereinafter sometimes referred to simply as the edge effect) There is a risk that it is difficult to obtain strength.
  • the exposed island part becomes too strong, and it becomes difficult to obtain an excellent cleaning property for fine parts such as a space between teeth, and it is also difficult to obtain a soft tactile sensation. There is a risk.
  • the diameter of this island part with an edge not all island parts need to be the same thickness.
  • the number of the island portions with edges in the cross section of the sea-island composite fiber is preferably 5 or more, but even if it is less than that, for example, the number of the island portions with edges is 4 or 3, etc. It may be.
  • a more preferable range of the number of island portions with edges is 8 or more, and a more preferable range is 10 or more.
  • the diameter of the sea-island composite fiber is preferably in the range of 50 to 1,000 ⁇ m, and more preferably in the range of 80 to 500 ⁇ m. If the diameter of the sea-island composite fiber is less than 50 ⁇ m, the waist of the sea-island composite fiber part itself when used for a brush becomes too weak, and the cleaning effect may be lowered depending on the application. When the diameter of the sea-island composite fiber exceeds 1,000 ⁇ m, the waist of the sea-island composite fiber part itself when used for a brush becomes too strong, depending on the form (length and diameter) of the exposed island part at the tip part. There is a possibility that the sea-island composite fiber portion at the root portion of the exposed island portion is strongly pressed against the object to be cleaned and easily damages the object to be cleaned.
  • the resin species constituting the sea-island composite fiber is not particularly limited as long as it is composed of two or more types of resins having different drug dissolution rates.
  • the sea part of the sea-island composite fiber Is made of a polyester resin, and the island part can be exemplified by a resin having a slower drug dissolution rate than the polyester resin.
  • a form in which the sea part is made of polybutylene terephthalate and the island part is made of nylon (registered trademark)
  • a form in which the sea part is made of polyethylene terephthalate and the island part is made of polybutylene terephthalate can be exemplified.
  • the cross-sectional shape of the sea-island composite fiber can be set to an arbitrary shape, and the cross-sectional shape is formed in a circular shape. Any of the shapes formed in irregular cross-sectional shapes other than a circle (for example, a polygon such as a triangle or a quadrangle, a multileaf shape, etc.) can be employed.
  • This cross-sectional shape can be set according to the application and intended use. Further, a usage form in which a plurality of types of cross-sectional shapes are mixed is also possible.
  • the cross-sectional shape of the island part of the sea-island composite fiber especially the cross-sectional shape of the island part with an edge, as long as it has an edge part, as will be described later, various triangles, quadrangles, and other It can be set to a substantially arbitrary shape such as a polygon, a star, or any other irregular shape.
  • This cross-sectional shape can also be set according to the application and intended use.
  • the form in which multiple types of cross-sectional shapes were mixed is also possible.
  • the tip of the island part exposed at the end part (one end part or both end parts) of the sea-island composite fiber can be tapered to form a sea-island composite fiber. It is also possible to form a shape in which the cross-sectional shape of the inner island portion is substantially maintained up to the tip of the exposed island portion.
  • the form in which the tip of the exposed island portion is tapered and tapered is formed by, for example, configuring the sea portion with a resin having a higher dissolution rate and a island portion with a resin having a lower dissolution rate with respect to the drug for dissolution. Can be achieved.
  • the form in which the cross-sectional shape of the island part (especially the cross-sectional shape of the island part with an edge) is formed in a shape that is substantially maintained as it is to the tip part of the exposed island part is, for example, only for the sea part It can be achieved by constituting the resin with a resin that dissolves in the solution and making the island part with a resin that does not dissolve in the drug.
  • the sea-island composite fiber may have island parts made of different materials. Furthermore, it is also possible to have a form having a plurality of island portions having different cross-sectional sizes. Thus, by having a plurality of types of islands, it is possible to have a plurality of functions.
  • 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 combines the above-mentioned characteristics such as the soft touch that does not damage the object to be cleaned and the excellent cleaning properties including the dirt scraping performance, and the bristle material with excellent durability. Since it is used, it is particularly suitable as a toothbrush, a brush for precision cleaning, a face-washing brush, a makeup brush, and the like.
  • 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 from 1 to 20 mm, and more preferably from 5 to 15 mm.
  • the bristle material for brushes according to the present invention is designed to be substantially free in terms of the size, arrangement, cross-sectional shape, arrangement density, etc. of the island part relative to the sea part, as described in Patent Document 3 described above. It can be intentionally made using techniques that can be used. Alternatively, a technique for producing a sea-island composite fiber using a conventionally known so-called pipe-type sea-island composite base (a base in which island components are finely divided by a pipe group and distributed in a predetermined state in the sea component). It can also be made intentionally. However, it is more preferable to use the technique described in Patent Document 3 described above because the target sea-island composite fiber can be produced more easily and with higher accuracy.
  • the method for producing a bristle material for a brush according to the present invention is a composite base for discharging a composite polymer flow composed of at least two polymers, and has a plurality of measuring holes for measuring each polymer component.
  • a sea-island composite fiber made of two or more kinds of resins having different drug dissolution rates is produced using a composite base having a distribution plate 2 having a plurality of distribution holes 2 formed in 2 and a discharge plate, and the sea-island composite It consists of the method characterized by manufacturing the bristle material for brushes which concerns on this invention as mentioned above using a fiber.
  • a brush bristle material having both excellent characteristics such as a soft tactile sensation that does not damage an object to be cleaned, and excellent cleaning properties including dirt scraping performance and excellent durability. can do.
  • brushes suitable as toothbrushes, precision cleaning brushes, face washing brushes, makeup brushes, etc. are provided. can do.
  • FIG. 1 shows a bristle material for a brush according to an embodiment of the present invention
  • FIG. 1 (A) is a schematic side view of one end of the bristle material
  • FIG. 1 (B) is a BB line in FIG. 1 (A).
  • 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. It is a schematic side view of the one end part of the bristle material for brushes concerning another embodiment of the present invention. It is a schematic cross-sectional view which shows the various form examples 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 (Embodiment 1) of the present invention
  • FIG. 1 (A) shows one end of the bristle material 1.
  • the brush bristle material 1 is composed of two or more kinds of resins (two kinds of resins in the illustrated example) having different drug dissolution rates, and includes a sea part 2 and an island part 3.
  • the island shape 3 is formed from one end or both ends in the longitudinal direction of the sea-island composite fiber 4 (FIG. 1A shows only one end of the bristle material 1).
  • the exposed island portion 3 is referred to as an exposed island portion 3a.
  • the sea-island composite fiber 4 has a plurality of edge-attached island portions 3c each having an edge portion 3b in the vicinity of the outer peripheral surface of the sea-island composite fiber 4. Then, all the island parts 3 are formed in the island part 3c with an edge of the same cross-sectional triangle, and all these island parts with an edge 3c are longitudinal directions of the sea-island composite fiber 4 as shown in FIG.
  • the exposed island 3a is formed at one or both ends in the direction.
  • the island part 3 consists of an island part of a some cross-sectional shape
  • the above-mentioned island part 3c with an edge and the island part of other forms may be mixed (this example is mentioned later).
  • the edge portions 3b of the six edged island portions 3c having the same triangular cross section are all directed outward in the radial direction of the sea-island composite fiber 4, in particular, outward on the radial line of the sea-island composite fiber 4.
  • the tip positions of the edge portions 3b in the fiber radial direction are arranged at substantially the same circle positions (circle positions indicated by broken lines) in the cross section, and all the edge portions 3b have excellent dirt. The scraping effect of can be demonstrated.
  • the six edged island portions 3 c are arranged on concentric circles with each edge portion 3 b facing outward in the radial direction of the sea-island composite fiber 4.
  • the outer peripheral surface forming part 5 that forms the outer peripheral surface of the sea-island composite fiber 4 is composed of only the sea part 2, and the sea-island composite fiber 4
  • the island part 3 is unevenly distributed in a portion near the center part other than the outer peripheral surface forming part 5.
  • the ratio Ts / Di between the diameter Di of the circumscribed circle 6 of the island part 3c with the edge closest to the outer peripheral surface forming part 5 and the thickness Ts of the sea part 2 of the outer peripheral surface forming part 5 is 0.
  • the sea-island composite fiber 4 is produced so that it becomes 0.5 or more, preferably 0.5 or more, and more preferably 0.8 or more.
  • the sea-island composite fiber 4 having such a form can be designed substantially freely in terms of the size, arrangement, cross-sectional shape, arrangement density, etc. of the island part relative to the sea part as described in Patent Document 3 described above. Can be made intentionally using a simple technique.
  • a composite base for discharging a composite polymer flow composed of at least two components of a polymer, a measuring plate having a plurality of measuring holes for measuring each polymer component, and a discharge polymer from the plurality of measuring holes
  • a distribution plate 1 in which a plurality of distribution holes 1 are formed in a confluence groove 1 where the flow is merged, and a plurality of distribution holes 2 are formed in a confluence groove 2 where a plurality of discharged polymer flows from the distribution holes 1 are merged.
  • Distribution plate 2 and further, if necessary, a distribution plate after distribution plate 3 in which a plurality of distribution holes are formed in a merging groove for merging a plurality of discharge polymer flows from an upstream distribution hole, and
  • the above-mentioned sea-island composite fiber 4 made of two or more kinds of resins having different drug dissolution rates can be produced using a composite die having a discharge plate for discharging a polymer from the distribution plate on the most downstream side (patent)
  • Reference 3 includes Various forms of composite spinneret is illustrated as). In such a manufacturing method, in particular, the exposed island portion 3a can be easily formed into the island portion with an edge 3c having a desired shape, and can be stably spun.
  • the brush bristle material 1 as described above can be produced using the sea-island composite fiber 4.
  • a sea-island composite fiber using a conventionally known so-called pipe-type sea-island composite base (a base in which island components are finely divided by a group of pipes and distributed in a predetermined state in the sea component). 4 can also be produced.
  • the distance between adjacent island portions 3 in the cross section of the sea-island composite fiber 4 (distance between adjacent edge-attached island portions 3c in the illustrated example) d is 0. It is set in the range of 5 to 50 ⁇ m, more preferably in the range of 1 to 30 ⁇ m.
  • the exposed island portion 3a at the longitudinal end of the sea-island composite fiber 4 is formed as follows, for example. Since the sea-island composite fiber 4 is composed of two types of resins, namely, a sea part 2 forming resin and an island part 3 forming resin, which have different drug dissolution rates (for example, dissolution rate by alkali treatment), for example, the sea part 2 is made alkaline. Formed with polybutylene terephthalate (PBT) as a polyester-based resin that is dissolved in, and the island 3 is formed with nylon (Ny) (registered trademark) as a resin that is not dissolved with an alkali.
  • PBT polybutylene terephthalate
  • nylon Ned trademark
  • the above-mentioned predetermined length of the process of performing the alkali treatment to dissolve only the sea part 2 and leaving the island part 3 not dissolved is the exposed length of the exposed island part 3a. As described above, this exposed length is preferably in the range of 0.5 to 10 mm.
  • the exposed island part 3a is comprised from the resin which is not melt
  • the island part 3 (exposed island part 3a) immediately adjacent to the outer peripheral surface forming part 5 is formed in the island part 3c with an edge, and the diameter Di of the circumscribed circle 6 and the thickness Ts of the sea part 2 of the outer peripheral surface forming part 5 The ratio Ts / Di is formed to be 0.3 or more.
  • a preferable range of the diameter Di of the circumscribed circle 6, a preferable range of the number of island portions with edges 3c in the cross section of the sea-island composite fiber 4, and a preferable range of the diameter of the sea-island composite fiber 4 are as described above.
  • 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 exposed island portions 3a described above are formed at both ends of the bristle material 1 for brushes, and a flat wire toothbrush.
  • the exposed island portion 3 a is formed at one end of the brush bristle material 1.
  • the ratio Ts / Di between the thickness Ts of the outer peripheral surface forming portion 5 and the circumscribed circle diameter Di of the edged island portion 3c in the immediate vicinity of the outer peripheral surface forming portion is set to 0.3 or more, so that The exposed island portion 3a composed of the island portion 3c with the edge is supported at the base portion in a state covered with the sea portion 2 having a sufficient thickness, and even when an external force is repeatedly applied to the exposed island portion 3a, The sea part 2 that supports the exposed island part 3a due to external force is prevented from tearing, and high durability of the bristle material 1 for brush is realized.
  • FIG. 3 shows one end portion of a brush bristle material 21 according to another embodiment (Embodiment 2) of the present invention.
  • the exposed island portion 23 exposed from the sea-island composite fiber 22 at the end portion of the bristle material 21 for the brush is formed with a tapered shape at the tip end portion.
  • the brush bristle material 21 having such a form is, for example, a resin (for example, polyethylene terephthalate (PET)) having a faster dissolution rate in the sea than an alkali as a dissolving agent, and a resin having a slower dissolution rate in the island. (For example, polybutylene terephthalate (PBT)).
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • the sea around the exposed island 23 is removed by the alkali treatment at the portion where the exposed island 23 is formed, and the exposed island 23 remains, but the exposed island 23 is gradually removed by the slow dissolution due to the alkali treatment. And is formed into a tapered shape. Further, under the influence of the alkali treatment at the end of the sea-island composite fiber 22, the shoulder part of the sea-island composite fiber 22 that is left connected to the exposed island part 23 is rounded as shown in the figure. Smooth shape.
  • the object to be cleaned is hardly damaged and a soft tactile sensation is obtained as in the first embodiment.
  • excellent cleaning properties are exhibited even for fine parts, and excellent durability is obtained.
  • the exposed island part 23 is formed in the island part with an edge, the outstanding scraping off effect is acquired and the further outstanding cleaning property is expressed.
  • tip part of the exposure island part 23 is sharp, it is possible to exhibit the outstanding cleaning effect also to a finer part.
  • Table 1 summarizes typical characteristics of Embodiment 1 and Embodiment 2 when applied to a toothbrush.
  • the sea part is made of polybutylene terephthalate (PBT) and the island part is made of nylon (Ny) (registered trademark).
  • the sea part is made of polyethylene terephthalate (PET)
  • the island part is made of polybutylene terephthalate ( PBT)
  • exposed islands were formed by alkali treatment.
  • the characteristics of the bristle material for brushes in Table 1 are shown as contrast characteristics with the bristle material for brushes formed of nylon (registered trademark) monofilament, which is usually a single material, and the durability of the bristle material for brushes. Is shown as a contrast characteristic with the hair material described in Patent Document 2 described above.
  • a circle in Table 1 indicates that the characteristic is equal to or higher than that of the object to be compared, and an ⁇ indicates that it is significantly superior to the object to be compared.
  • the island portion in the cross section of the sea-island composite fiber, is unevenly distributed in a portion near the central portion other than the outer peripheral surface forming portion, and the edged island portion in the immediate vicinity of the outer peripheral surface forming portion.
  • the sea-island composite fiber can take various cross-sectional forms. Various forms are illustrated in FIGS. 4 and 5.
  • the brush bristle material 31 shown in FIG. 4 (A) is substantially the same as the form shown in FIG. 1 (B), and is formed in a sea-island composite fiber 34 having a sea part 32 and an island part 33 with an edge. In addition, it has an outer peripheral surface forming portion 35 having a predetermined thickness or more and consisting only of the sea portion. Reference numeral 36 denotes a circumscribed circle of the island part 33 with the edge.
  • the brush bristle material 41 shown in FIG. 4 (B) is formed on the sea-island composite fiber 44 having the sea part 42 and the island part 43 with the edge, and has an outer peripheral surface forming part 45 having only a sea part and having a predetermined thickness or more.
  • the number of the edge-attached island portions 43 is five as compared with the embodiment shown in FIG.
  • Reference numeral 46 denotes a circumscribed circle of the edged island portion 43.
  • the brush bristle material 51 shown in FIG. 4 (C) is formed on a sea-island composite fiber 54 having a sea part 52 and an island part 53 with an edge, and has an outer peripheral surface forming part 55 having a predetermined thickness or more consisting only of the sea part.
  • the number of edge-attached island portions 53 is three as compared to the configuration shown in FIG.
  • Reference numeral 56 indicates a circumscribed circle of the island part 53 with the edge.
  • FIG. 4 (D) is formed on a sea-island composite fiber 64 having a sea part 62 and an island part 63 with an edge, and has an outer peripheral surface forming part 65 having only a sea part and having a predetermined thickness or more.
  • the cross-sectional shape of the edge-attached island portion 63 is a pentagon, and the number of the edge-attached island portions 63 closest to the outer peripheral surface forming portion 65 is five.
  • the island part 63 with an edge is also arranged at the center of the cross section of the sea-island composite fiber 64.
  • Reference numeral 66 denotes a circumscribed circle of the edged island part 63.
  • the cross-sectional shape of the edge-attached island portion 73 is a quadrangle.
  • Reference numeral 76 indicates a circumscribed circle of the island part 73 with the edge.
  • the outer peripheral surface formation part 85 more than predetermined thickness which consists only of a sea part.
  • the cross-sectional shape of the edge-attached island portion 83 having a triangular cross-section is larger, and the edge portion directed outward in the radial direction of the sea-island composite fiber 84 is more It is formed in a sharp shape.
  • Reference numeral 86 denotes a circumscribed circle of the island part 83 with the edge.
  • 4G is formed on a sea-island composite fiber 94 having a sea part 92 and an island part 93 with an edge, and has an outer peripheral surface forming part 95 having a predetermined thickness or more consisting only of the sea part.
  • the cross-sectional shape of the edge-attached island portion 93 is formed in a parallelogram having a sharp edge portion.
  • Reference numeral 96 denotes a circumscribed circle of the island part 93 with the edge.
  • the cross-sectional shape of the edge-attached island portion 103 is a star shape, and the number of the edge-attached island portions 103 closest to the outer peripheral surface forming portion 105 is six.
  • the island part 103 with an edge is also arranged at the center of the cross section of the sea-island composite fiber 104.
  • Reference numeral 106 denotes a circumscribed circle of the edged island portion 103.
  • the cross-sectional shape of the edge-attached island portion 113 is an irregular cross-sectional shape in a double-edge portion state in which a part of a circle is cut off, and the outer peripheral surface forming portion 115 is formed.
  • the number of the nearest edge-attached island portions 113 is four.
  • Reference numeral 116 denotes a circumscribed circle of the edged island portion 113.
  • the cross-sectional shape of the edge-attached island portion 123 is a raindrop-like and has a deformed cross-sectional shape in a single edge portion state.
  • Reference numeral 126 indicates a circumscribed circle of the edged island portion 123.
  • the sea-island composite fiber 134 having the sea part 132 and the island part 133 with the edge, and the outer peripheral surface forming part 135 having only a sea part and having a predetermined thickness or more.
  • the cross-sectional shape of the edge-attached island portion 133 immediately adjacent to the outer peripheral surface forming portion 135 is a crescent shape and an irregular cross-sectional shape in a double edge portion state.
  • the island portion 137 disposed in the center of the cross section of the sea-island composite fiber 134 has a quadrangular cross section.
  • Reference numeral 136 indicates a circumscribed circle of the island part with edge 133.
  • an outer peripheral surface forming portion having a predetermined thickness or more which is formed of the sea-island composite fiber 144 having the sea part 142 and the island part 143 with an edge, and is composed only of the sea part.
  • the cross-sectional shape of the edge-attached island portion 143 in the immediate vicinity of the outer peripheral surface forming portion 145 is a quarter circle, and edge portions are provided on both sides in the circumferential direction. It has an irregular cross-sectional shape in a state of having.
  • Reference numeral 146 indicates a circumscribed circle of the edged island portion 143.
  • FIG. 5 illustrates various cross-sectional shapes of the sea-island composite fiber itself.
  • the cross-sectional shape of the sea-island composite fiber 154 having the sea part 152 and the island part 153 with an edge, and having the outer peripheral surface forming part 155 having only a sea part and having a predetermined thickness or more (Outside cross-sectional shape) is formed in a five-leaf shaped irregular cross-sectional shape.
  • the cross-sectional shape of the sea-island composite fiber 164 having the sea part 162 and the edged island part 163 and having the outer peripheral surface forming part 165 having a predetermined thickness or more consisting of only the sea part ( The outer cross-sectional shape) is formed in a triangular cross-sectional shape.
  • the cross-sectional shape of the sea-island composite fiber 174 having the sea part 172 and the edged island part 173, and having the outer peripheral surface forming part 175 having a predetermined thickness or more consisting only of the sea part (Outer cross-sectional shape) is formed in a rectangular cross-sectional shape.
  • the cross-sectional shape of the sea-island composite fiber 184 having the sea part 182 and the island part 183 with an edge, and having the outer peripheral surface forming part 185 having a predetermined thickness or more consisting only of the sea part (Outside cross-sectional shape) is formed in a three-leaf shaped irregular cross-sectional shape.
  • various forms can be adopted also in the cross-sectional shape of the sea-island composite fiber.
  • the sea-island composite fiber in the present invention can take various cross-sectional forms, and can be optimally designed according to the application and intended use.
  • Examples of the present invention will be described below. Examples 1 to 10, Comparative Examples 1 and 2 [Production of brush hair]
  • PBT polybutylene terephthalate
  • PET polyethylene terephthalate
  • nylon 610 nylon 610
  • Poly11-PTMG polytetramethylene glycol
  • Pebax Pebax "(registered trademark) 72R53) manufactured by Arkema, Inc.
  • PBN polybutylene naphthalate
  • the sea island type designed so that the sea part, the resin type of the island part, the area ratio between the sea part and the island part, and the number of the island parts are as shown in Table 2, and the island part with the edge is unevenly distributed in the part near the central part in the sea part.
  • the composite fiber was melt spun. After 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 sea-island composite fibers. The composition of the obtained sea-island composite fiber is shown in Table 2.
  • the above fibers were bundled in a straight line having a bundle diameter of 45 mm and packaged, and then cut into an arbitrary length.
  • the bundle of sea-island composite fibers was immersed in a heated caustic soda solution with both the cut end faces exposed, and both ends were dissolved and removed to expose the islands.
  • the exposed length of the islands was controlled by changing the immersion time in the caustic soda solution.
  • Table 2 shows the characteristics of the obtained brush hair material.
  • Comparative Example 1 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 to a taper was produced.
  • the sea-island composite fibers having the same composition as in Example 9 were formed in a shape in which the cross-sectional shape of the island part was circular and had no edge part.
  • 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 all brushes, and is particularly suitable for toothbrushes, precision cleaning brushes, face washing brushes, makeup brushes, and the like.

Abstract

L'invention concerne un matériau de crin de brosse, des parties île étant exposées au niveau d'une extrémité ou des deux extrémités dans la direction de longueur d'une fibre composite île et mer comprenant au moins deux types de résine ayant différents taux de dissolution de médicament, ledit matériau de crin de brosse étant caractérisé en ce que : la fibre composite île et mer comprend une pluralité de parties île à bord ayant une forme transversale équipée de bord à proximité de la surface périphérique externe de la fibre composite île et mer ; une partie de formation de surface périphérique externe qui forme la surface périphérique externe de la fibre composite île et mer est constituée uniquement de la partie mer ; et, dans une section transversale de la fibre composite île et mer, le rapport Ts/Di, qui est le rapport entre l'épaisseur Ts de la partie mer de la partie de formation de surface périphérique externe sur le diamètre Di du cercle circonscrit des parties île à bord les plus proches de la partie de formation de surface périphérique externe, est au moins 0,3. L'invention concerne en outre une brosse utilisant le matériau de crin de brosse et un procédé de fabrication du matériau de crin de brosse. Ainsi, il est possible de fournir : un matériau de crin de brosse qui a des caractéristiques telles qu'une texture douce qui ne détériore pas l'objet à nettoyer, ainsi qu'une excellente performance de nettoyage même en ayant la capacité de racler la saleté, et a également une excellente durabilité ; une brosse utilisant le matériau de crin de brosse ; et un procédé de fabrication du matériau de crin de brosse.
PCT/JP2016/088358 2015-12-25 2016-12-22 Matériau de crin de brosse, brosse l'utilisant, et procédé de fabrication dudit matériau de crin de brosse WO2017111009A1 (fr)

Priority Applications (3)

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KR1020187019636A KR20180097626A (ko) 2015-12-25 2016-12-22 브러시용 모재 및 그것을 사용한 브러시 그리고 그 브러시용 모재의 제조 방법
JP2017508118A JPWO2017111009A1 (ja) 2015-12-25 2016-12-22 ブラシ用毛材及びそれを用いたブラシ並びにそのブラシ用毛材の製造方法
CN201680076077.4A CN108471871A (zh) 2015-12-25 2016-12-22 刷子用毛材料和使用其的刷子、以及该刷子用毛材料的制造方法

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JP2015-254203 2015-12-25
JP2015254203 2015-12-25

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09322821A (ja) * 1996-06-05 1997-12-16 Sunstar Inc 歯ブラシ
JP2006340748A (ja) * 2005-06-07 2006-12-21 Lion Corp 歯ブラシ用毛および歯ブラシ
JP2011174215A (ja) * 2010-01-29 2011-09-08 Toray Ind Inc 複合口金
JP2011218088A (ja) * 2010-04-14 2011-11-04 Toray Monofilament Co Ltd ブラシ用毛材およびブラシ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2623858B2 (ja) 1989-09-12 1997-06-25 東レ株式会社 ブラシ用繊維およびブラシ
JP4816037B2 (ja) * 2005-12-02 2011-11-16 サンスター株式会社 歯ブラシ
EP2530188B1 (fr) * 2010-01-29 2018-11-21 Toray Industries, Inc. Fibre composite mère-îlot, fibre ultrafine et filière composite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09322821A (ja) * 1996-06-05 1997-12-16 Sunstar Inc 歯ブラシ
JP2006340748A (ja) * 2005-06-07 2006-12-21 Lion Corp 歯ブラシ用毛および歯ブラシ
JP2011174215A (ja) * 2010-01-29 2011-09-08 Toray Ind Inc 複合口金
JP2011218088A (ja) * 2010-04-14 2011-11-04 Toray Monofilament Co Ltd ブラシ用毛材およびブラシ

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TW201729720A (zh) 2017-09-01
KR20180097626A (ko) 2018-08-31
JPWO2017111009A1 (ja) 2018-10-11

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