JP2017195950A - Bristle material for brush and brush using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bristle material for a brush that strikes a balance between an optimum softness and excellent cleaning property while having necessary durability for inhibiting tip of the bristle from opening, and to provide a brush using the same.SOLUTION: A bristle material for a brush is formed of a twist yarn and a covering into a string shape using at least two preformed monofilaments and cut in a length of 3 to 1000 mm. There is provided a brush using the same.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a brush bristle material suitable for various brushes including a toothbrush and a brush using the same.

  Conventionally, a technique using a monofilament of synthetic fiber as a bristle material for a brush is widely known. In a brush using such a bristle material for a brush, for example, a toothbrush, the softness of the bristle material that makes the user feel a soft polishing feeling is often required in addition to the ability to clean the teeth with the bristles.

  However, a brush bristle material made of a monofilament of synthetic fiber may make the hair feel too strong for some users. In such a case, when the diameter of the monofilament is reduced to soften the monofilament alone, the fluff becomes soft, but the bristles easily open and the durability of various brushes including toothbrushes is inferior. .

  In order to maintain excellent cleaning properties while suppressing the opening of the bristles and the like, a brush bristle material is known in which at least two monofilaments are twisted together to form a helical bristle substance (for example, Patent Documents) 1). However, the bristle material for brush described in Patent Document 1 is manufactured by a series of preset steps in which at least two monofilaments are extruded and stretched, and then twisted to them. The specifications of each monofilament constituting the hair material are almost determined by the initial settings of the device and its operating conditions, etc., in order to further improve the softness of the hair material and the cleaning property when used for a brush, It is difficult to freely set a combination of a plurality of monofilaments. Therefore, it is extremely difficult to realize a brush bristle material that achieves both optimum softness and excellent cleanability.

  On the other hand, in order to pursue a soft shot feeling and excellent durability as a racket gut instead of a bristle material for brushes, a technique of making a polyester monofilament is also known (for example, Patent Document 2). However, this technology is limited to the application to the racket gut, which is much longer than the brush bristle material, and even the softness of the gut required for a soft shot feel makes it a brush bristle material. Since it is much harder than what is required, it is extremely difficult to develop it into a brush hair material.

Japanese National Patent Publication No. 11-511812 JP 2011-206177 A

  Accordingly, an object of the present invention is to provide a bristle material for a brush that has both necessary softness and excellent cleaning properties while having the necessary durability capable of suppressing the opening of the hair tip, and a brush using the same. Is to provide.

  In order to solve the above problems, the bristle material for a brush according to the present invention is formed in a string shape using at least two monofilaments formed in advance, and is cut into a length of 3 to 1000 mm. Become. The string shape may be formed by twisting at least two monofilaments together, or by a so-called covering method in which monofilaments as side yarns are arranged around one or more monofilaments as core yarns. Good. When monofilaments are twisted with each other or when side yarns are twisted with respect to the core yarn, the preferred range of the number of twists is 100 to 1000 T / m (T: turn, twist).

  In such a bristle material for brushes according to the present invention, at least two monofilaments to be used are pre-formed, that is, at least two monofilaments that have already been manufactured are used individually, In forming the string, at least two monofilaments can be substantially freely selected without restriction, and can be set substantially freely as a combination of monofilaments. With such a high degree of design freedom, at least two monofilaments are formed in a string shape, and in particular, a twisted form is formed, thereby forming irregularities on the side surface of the string shape. Therefore, the cleaning property is improved, and the liquid is easily held in the string-like form, so that it is possible to improve the liquid containing property required according to the application. Furthermore, the target softness can be easily improved by the optimum setting of the monofilament material and the optimum design of the string form. Therefore, while providing the necessary durability to the brush bristle material formed in a string shape, the brush bristle material that achieves both optimum softness and excellent cleanability easily, and further improved to contain liquid The brush bristle material is realized. Moreover, since a unique tactile sensation can be easily obtained by the combination of monofilaments, it is possible to easily design an optimal brush bristle material for a toothbrush or the like. And by cutting to predetermined length within the range of 3-1000 mm, the optimal bristle material for brushes is implement | achieved using various brushes including a toothbrush.

  In the bristle material for brushes according to the present invention, the at least two monofilaments may be made of the same material or different materials. Moreover, it is possible to use monofilaments of different colors regardless of the same type or different types of materials, thereby giving the hair material a high-class feeling, fun, fun, and the like. If monofilaments made of different materials are used, a brush bristle material having the characteristics of each material can be realized, and at least one of durability, softness, and cleanability can be intentionally improved. The combination of different materials is not particularly limited. For example, if the different materials have a combination of polyester and polyamide, the durability of polyester and the excellent feel of polyamide can be intentionally expressed more strongly. It becomes possible. Also, when using the same kind of material, polyester or polyamide can be used.

  The material constituting the monofilament of the brush hair material according to the present invention is represented by polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polytrimethylene terephthalate (PTT) and the like. In addition to polyamide resins represented by polyester resin, nylon 6 (Ny6), nylon 610 (Ny610), nylon 66 (Ny66), nylon (Ny612), and the like, polyethylene (PE), polypropylene (PP) Polyolefin resin, polyvinylidene fluoride (PVdF), fluorine resin typified by ethylene / tetrafluoroethylene copolymer (ETFE), polyphenylene sulfide (PPS) resin, and the like can also be used. These materials can be combined virtually freely. Of course, combinations of different materials as well as combinations of the same materials, such as PET and PBT, PTT and PBT, Ny6 and Ny610, Ny610 and Ny612, etc. A combination of nylon is possible.

  Moreover, in the bristle material for brushes according to the present invention, it is preferable that the at least two monofilaments are thermally fixed or bonded to each other. Since at least two monofilaments formed in a string shape are preferably maintained in a twisted or covered form as described above, the monofilaments are heat-fixed or bonded together to maintain the form. Preferably it is.

  In the bristle material for brushes according to the present invention, when a monofilament is processed into a string, it is selected from a thermoplastic resin-based adhesive, a photocurable resin-based adhesive, and a thermosetting resin-based adhesive after stringing. Further excellent durability can be exhibited by performing an adhesive coating process using an adhesive.

  Moreover, in the bristle material for brushes according to the present invention, as described later, when one end portion of the bristle material of a predetermined length is used as the hair tip, and when both end portions of the bristle material are used as the hair tip However, it is also preferable that at least one end portion is formed in a tapered shape. The taper shape may be processed by dissolution with a drug or mechanical polishing. Since the hair tips are formed in a tapered shape, the hair tips can easily enter the fine parts, so that the cleaning property can be further improved and the flexibility of the hair tips can be intentionally increased. The tactile sensation can be further improved.

  The present invention also provides a brush in which the brush bristle material according to the present invention as described above is used at least in part. In particular, since the brush according to the present invention uses a brush bristle material that has both the necessary durability as described above and has both optimum softness and excellent cleaning properties, it is particularly suitable for toothbrushes and precision cleaning. It is suitable as a brush, facial cleansing brush, makeup brush, and the like.

  Thus, according to the present invention, it is possible to provide a bristle material for a brush having both necessary softness and excellent softness while having necessary durability. In addition, it is possible to achieve a brush hair material with improved liquid containment and unique tactile sensation.

  In addition, according to the present invention, it is possible to provide various brushes using at least a part of the bristle material for brushes as described above. In particular, brushes suitable as toothbrushes, precision cleaning brushes, face washing brushes, makeup brushes, etc. can do.

It is the figure which observed the bristle material for brushes concerning one Embodiment of this invention from the side surface. It is the figure which observed the bristle material for brushes concerning another embodiment of the present invention from the side. It is a schematic block diagram which shows the flocking method at the time of using the bristle material for brushes for a toothbrush.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a brush bristle material 100 according to an embodiment of the present invention. In this embodiment, for example, two monofilaments 1 and 2 formed in advance, which are different in color from the same material or different materials, for example. Are integrally formed in a single string shape, and the monofilaments 1 and 2 are heat-fixed or bonded to each other.

  FIG. 2 shows a brush bristle material 200 according to another embodiment of the present invention. In this embodiment, for example, three pre-formed monofilaments 3 that are different in color from the same material or different materials, 4, 5 are twisted together and integrally formed into a single string, and the monofilaments 3, 4, 5 are heat-fixed or bonded to each other.

  Although FIG. 1 and FIG. 2 show examples of twisted yarn processing, it may be formed into a string shape by a cover ring as described above (not shown). Further, the number of monofilaments formed in a string shape may be at least two, and any number of three or more is possible. In addition, about the shape of the cross section in the direction orthogonal to the fiber axis of the monofilament formed in a string shape, in addition to a substantially circular shape, a polygonal shape such as a triangle, a quadrilateral, a pentagon, a clover shape, a petal shape, a deformed cross section such as a star shape, A track shape, a rectangular shape, a flat shape obtained by connecting deformed cross sections, and the like can be appropriately selected as long as the object of the present invention is not impaired.

  The brush bristle material 100 and the brush bristle material 200 configured as described above are used at least in part for the production of various brushes. In general, as 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. 3A shows a toothbrush 13 in which the brush bristle material 11 is planted on the head portion of the toothbrush constituent member 12. As a method of planting the brush bristle material 11, FIG. There are two types of methods as shown in FIGS. 3B and 3C, which are enlarged sectional views taken along line a. In the method shown in FIG. 3B, 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 constituent member 12 with a fixing tool called a flat wire 15. . The completed toothbrush is usually called a flat wire toothbrush. In such a flat toothbrush, both ends of the brush bristle material 11 prepared in advance are the bristles of the brush. In the method shown in FIG. 3 (C), 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. Let me. The completed toothbrush is usually called a flat wire toothbrush. In such a flat wire toothbrush, one end of the brush bristle material 11 prepared in advance serves as a brush tip. Therefore, in the case where the brush bristle material 100 or the brush bristle material 200 according to the present invention is used and the tapered portion is formed at the end, the brush bristle material is used for the flat toothbrush. In the case of use, a tapered taper portion is formed at both end portions of the bristle material, and when used in a flat wire toothbrush, a tapered taper portion is formed at one end portion of the bristle material. .

Below, the Example at the time of applying the bristle material for brushes concerning this invention to a toothbrush is described.
Two pre-formed monofilaments were formed into a string shape by twisting or covering to produce a brush hair material, and a predetermined length of brush hair material was planted in a toothbrush. Twisting was carried out with a ring twisting machine, and covering was carried out with a covering machine. Fixing to the string-like form was performed by heat fixing (190 ° C. × 1 minute) or an adhesive.

  Regarding the evaluation of the softness and cleanability of the brush bristle material according to the present invention, the brush bristle material was implanted in a toothbrush, and 20 monitors cleaned the oral cavity. The softness of the bristle material and the teeth at that time The surface cleaning feeling was evaluated according to the following criteria.

(1) Softness:
○: Soft polishing feeling.
Δ: A slight tingling stimulus is felt.
X: I feel pain.

(2) Cleanability:
○: There is a feeling that dirt has been removed.
Δ: Part remains dirty.
X: Dirt and coloring are worrisome.

Examples 1 to 6, Comparative Examples 1 and 2
As a result of carrying out each example and comparative example under the conditions shown in Table 1, the evaluation results of softness and cleanability shown in Table 1 were obtained. In each of Examples 1 to 6 of the present invention, excellent evaluation results of softness and cleanability were obtained.

In addition, the symbol of the raw material in Table 1 is as follows.
PBT: Polybutylene terephthalate, Ny610: Nylon 610, PTT: Polytrimethylene terephthalate

  The bristle material for a brush according to the present invention can be applied to any brush, and is particularly suitable for a toothbrush, a precision washing brush, a face washing brush, a makeup brush, and the like.

1, 2, 3, 4, 5 Monofilament 11, 100, 200 Brush bristle material 12 Toothbrush constituent member 12a Head portion surface side member 12b Head portion back surface side member 13 Toothbrush 14 Flocking hole 15 Flat wire 16 Through hole 17 Grilled ball

Claims (6)

  A bristle material for a brush which is formed in a string shape using at least two monofilaments formed in advance and is cut to a length of 3 to 1000 mm.   The bristle material for brushes according to claim 1, wherein the at least two monofilaments are made of different materials.   The brush bristle material according to claim 2, wherein the dissimilar material has a combination of polyester and polyamide.   The bristle material for brushes according to any one of claims 1 to 3, wherein the at least two monofilaments are heat-fixed or bonded to each other.   The bristle material for brushes according to any one of claims 1 to 4, wherein at least one end portion is formed in a tapered shape.   The brush using the bristle material for brushes in any one of Claims 1-5.

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