JP2011101734A - Anchor for brush, and brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor for a brush, which has sufficient hardness though it is a synthetic resin made anchor, which has less cracks or defects in setting bristles, and which can be used for the conventional brush base material made of general purpose plastic while taking natural environment into consideration, and also to provide a brush using the anchor. <P>SOLUTION: The anchor 1 is buried in the setting holes 4 of a brush base material 3 together with a bristle material 2 for a brush and has a function of fixing the bristle material 2 in the brush base material 3. The anchor 1 for the brush is characterized in that it essentially constituted of synthetic resin having Izod impact strength (notched) of 15-100 J/m as measured in accordance with JIS K7110, that it has a cross sectional width of 0.5-3.0 mm in parallel with the bristle setting direction and also a thickness of 0.1-1.0 mm, and that the cross sectional shape is a polygon having quadrangle or more sides or an ellipse. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a flat surface for a brush that is made of a synthetic resin, has sufficient hardness, has few cracks and defects during flocking, and that can be used on conventional general-purpose plastic brush base materials. The present invention relates to a line and a brush using this flat line.

  Brushes include household brushes such as hair brushes, body brushes, tooth brushes, and cosmetic brushes, and industrial brushes such as metal plate polishing / cleaning brushes and liquid crystal screen cleaning brushes.

  These brushes are generally manufactured by supplying a bunch of brush bristle materials made of synthetic resin fibers to a flocking machine and flocking the brush bristle material on a base material. For example, in the case of a toothbrush, a brush base is used. A method has been adopted in which a flocking hole is previously formed in the head portion of the material, the bristle material for the brush is bent in two, embedded in the flocked hole together with a flat metal wire, and the bristle material for the brush is fixed to the brush base material.

  Since this method is inexpensive and can be easily planted, it has become the mainstream method for manufacturing brushes. However, since the flat wires used are made of metal, the manufactured brushes are made of a brush base material and brush made of synthetic resin. Because it is a complex of hair material and a flat wire made of metal, it is extremely difficult to separate the synthetic resin from the metal, and there are problems such as costly separation work during disposal. The actual situation is that it has been disposed of as it is, or incinerated.

  As mentioned above, brushes are widely manufactured for general household and industrial use such as hair brushes, body brushes, toothbrushes, makeup brushes, etc., and all of these are discarded without separation of synthetic resin and metal. If this happens, it may have an excessive adverse effect on the industry and the natural environment.

  To solve this problem, there is a toothbrush in which a biodegradable resin filament is planted with a wedge-shaped triangular prism-shaped biodegradable resin flat wire in a flock hole of a biodegradable resin handle (see, for example, Patent Document 1). Are known.

  Since this toothbrush is entirely made of biodegradable resin, separation is not necessary when it is discarded, and it is a product that is friendly to the natural environment, such as natural decomposition as it is. It is not hard enough like a wire, it is hard to be embedded in the flocking hole at the time of flocking, and when the biodegradable resin monofilament is cut into a flat wire, it can not be cut well and the biodegradable resin There has been a problem that flocking loss is likely to occur due to cracking or chipping of the flat wire.

  In addition, biodegradable resins are difficult to put into practical use because of the high raw material price compared to conventional plastics such as polyethylene and polypropylene that have been used in conventional handles, and synthetic resin brushes that can be used for conventional general-purpose plastics. The development of the flat line was sought after all the time.

Japanese Patent No. 3861320

  The object of the present invention is a brush that is made of synthetic resin but has sufficient hardness, has few cracks and defects during flocking, and that can be used for conventional general-purpose plastic brush base materials. The object is to provide a flat wire for use and a brush using the flat wire.

  In order to achieve the above object, according to the present invention, a flat wire is embedded in a flocked hole of a brush base material together with a brush hair material, and functions to fix the brush hair material to the brush base material. The main component is a synthetic resin having an Izod impact strength (notched) of 15 to 100 J / m measured according to K7110, the width of the cross section parallel to the flocking direction is 0.5 to 3.0 mm, and the thickness is also 0. A flat wire for a brush having a cross-sectional shape of 0.1 to 1.0 mm and a polygon or an ellipse having a square shape or more is provided.

In the flat wire for brushes of the present invention,
The Rockwell hardness measured according to JIS G0202 of the synthetic resin is M50-120 or R80-150,
More preferable conditions include that the synthetic resin is at least one selected from polyamide-based resins, polyester-based resins, fluorine-based resins, and polyphenylene sulfide-based resins, and a cut piece of a synthetic resin monofilament.

  The brush of the present invention is characterized by using the above-described flat wire for brush.

  According to the present invention, as described below, it is made of a synthetic resin, has sufficient hardness, has few cracks and defects during flocking, and can be used for conventional general-purpose plastic brush base materials. It is possible to obtain a brush wire and a brush in consideration of the natural environment.

(A) is explanatory drawing which shows the method of planting the bristle material for brushes on a brush base material, (b) is the enlarged view which looked at the flocked part from upper direction, (c) is a perspective view of a brush. (A) is a perspective view which shows an example of the flat wire for brushes of this invention, (b) is explanatory drawing which shows that the flat wire for brushes is obtained from a synthetic resin monofilament. (A)-(e) is a perspective view which shows the other several examples of the flat wire for brushes of this invention.

  Hereinafter, the present invention will be specifically described with reference to the drawings.

  (A) of FIG. 1 is explanatory drawing which shows the method of planting the bristle material for brushes on a brush base material, 1 is a flat wire for brushes, 2 is bristle material for brushes, 3 is a brush base material, 4 is a flocking hole (B) is an enlarged view of the flocked portion as viewed from above, (c) is a perspective view of the brush, and 5 indicates the brush.

  As shown in FIG. 1, as a general brush manufacturing method, a flocked hole 4 is previously formed in a brush base material 3, the brush bristle material 2 is bent in two, and embedded in the flocked hole 4 together with the brush flat wire 1. A method of fixing the brush bristle material 2 to the brush base material 3 is employed. The conventional brush 5 uses a metal brush flat wire 1.

  The flat wire 1 for brushes of the present invention is not made of metal but is made of a synthetic resin, and more specifically, made of a synthetic resin having an Izod impact strength (with notch) measured according to JIS K7110 of 15 to 100 J / m. It is characterized by.

  If the Izod impact strength (with notch) of the synthetic resin that is the material is below the above range, the brush flat wire 1 is likely to break or chip during flocking, and the brush bristle material 2 is placed in the flock hole 4. Since it cannot fix firmly and flocking property may fall, it is unpreferable.

  The brush flat wire 1 of the present invention is preferably made of a cut piece of synthetic resin monofilament. However, if the Izod impact strength (with notch) of the synthetic resin used as the material exceeds the above range, the synthetic resin monofilament In some cases, the brush flat wire 1 cannot be cut well, and as a result, the brush hair material 2 cannot be embedded in the flock hole 4 and the flocking property may be lowered.

  In addition, the Izod impact strength (with notch) of the synthetic resin as a material exhibits a sufficient function as a flat wire for a brush if the above range is satisfied, but further, the Izod impact strength (with notch) is 20 to 85 J. / M is preferable.

  The shape of the flat wire 1 for brushes of the present invention is sufficient if it is a small piece having the same rectangular shape as that of a conventional metal brush flat wire, but other shapes (a) to (e) in FIG. It is necessary to have a polygonal or elliptical shape that is equal to or larger than a quadrangle as shown in FIG. 2), and by using such a shape, the flat wire 1 for the brush sticks into the brush base material 3, and an anchor effect is easily obtained. In this case, the advantage that the flat wire for brush 1 is not easily broken or chipped is obtained.

  As shown in FIG. 3C, there is no problem even if the polygon is a substantially polygon having rounded vertices.

  Incidentally, the triangle has a shape that is easy to be pierced into the brush base material 3, but since the tip is sharp, it tends to be broken and the flocking property tends to be lowered.

  Moreover, the dimension of the flat wire 1 for brushes of the present invention is such that the cross section parallel to the flocking direction p has a width of 0. 0 as shown in FIG. 2 (a) and FIG. 3 (a) to (e). 5 to 3.0 mm, preferably an irregular shape with a thickness of 0.1 to 1.0 mm, more preferably a width of 0.5 to 2.0 mm and a thickness of 0.3 to 0.8 mm. .

  When the width of the cross section parallel to the flocking direction p of the brush flat wire 1 is less than the above range, the anchor effect tends to be difficult to obtain, and conversely when the width exceeds the above range, the brush flat wire 1 becomes the brush. It tends to be difficult to sufficiently penetrate the substrate 3.

  Moreover, when the thickness of the cross section parallel to the flocking direction p of the brush flat wire 1 is less than the above range, the brush flat wire 1 tends to be broken or chipped at the time of flocking. If it exceeds the above range, the brush flat wire 1 tends to hardly stick to the brush base 3.

  Here, the synthetic resin that is the main component of the brush flat wire 1 of the present invention is not particularly limited as long as the Izod impact strength (with notch) is within the above range. For example, nylon 6, nylon 66, Nylon 610, Nylon 612, Nylon 46, Nylon MDX6, Nylon 11, Nylon 12, or a polyamide resin comprising two or more types of copolymers, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polypropylene terephthalate, polymethylene naphthalate , Polyester resins composed of polybutylene naphthalate, polypropylene naphthalate or a copolymer of two or more of these, polyphenylene sulfide resin, polyvinylidene fluoride, ethylene / tetrafluoroethylene copolymer, Tetrafluoroethylene, tetrafluoroethylene / hexafluoropropylene copolymer, polytetrafluoroethylene / perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene / vinylidene fluoride copolymer, tetrafluoroethylene / hexafluoropropylene / vinylidene fluoride Copolymer, polychlorotrifluoroethylene, ethylene chloride / tetrafluoroethylene copolymer, fluororesins such as fluorovinyl ether, and polyolefin resins such as polyethylene and polypropylene. It is preferable to use a polyamide-based resin, a polyester-based resin, a fluorine-based resin, or a polyphenylene sulfide-based resin having characteristics.

  In addition, the main component said by this invention means the structural material which occupies most of the flat wire 1 for brushes, and specifically, the structural material which occupies 50-100 weight% by weight ratio, More preferably, 70-100 weight% Say.

  Therefore, in the present invention, a blend of two or more of the above synthetic resins can also be used. For example, a hard and fragile material such as polyethylene naphthalate or polyphenylene sulfide, other polyester resins, polyamide resins, etc. By appropriately blending the synthetic resin in the range of 3 to 50% by weight, it is possible to control the hardness to an appropriate level and to obtain a flat wire for a brush with few cracks and chips.

  In addition, since elastomer resins such as polyester elastomer resin and polyamide elastomer resin are extremely high impact resistant materials, the elastomer resin is appropriately added to the polyester resin or polyamide resin in the range of 3 to 50% by weight. By blending, a flat wire for a brush having a more suitable hardness and having few cracks and chips can be obtained.

  In addition to the particles such as various inorganic particles, various metal particles, and cross-linked polymer particles, the above-mentioned synthetic resin may be a known antioxidant as long as it does not inhibit the effects of the present invention. Agents, light-proofing agents, anti-glare agents, ion-exchange agents, anti-coloring agents, anti-static agents, various coloring agents, waxes, silicone oils, various surfactants, various reinforcing fibers, etc. is there.

  Moreover, it is preferable that the flat wire 1 for brushes of this invention consists of a synthetic resin whose Rockwell hardness measured according to JISG0202 is M50-120 or R80-150, Furthermore, it is M70-100 or R90-130. A range is preferred.

  In general, the material used for the brush base 3 is inexpensive and easy to process, so general-purpose plastics such as polypropylene and polyethylene are used. If the Rockwell hardness falls below the above range, a flat wire for brushes is used. 1 becomes difficult to stick into the brush base material 3 and the anchor effect may not be obtained. On the contrary, if the Rockwell hardness exceeds the above range, the synthetic resin monofilament cannot be cut well into the brush flat wire 1. As a result, the bristle material 2 for brushes cannot be embedded in the flocking hole 4 and the flocking property may be lowered.

  Here, the manufacturing method of the flat wire 1 for brushes of this invention is demonstrated.

  As a manufacturing method of the synthetic resin flat wire 1 for brushes, for example, there are general methods such as injection molding and extrusion molding for manufacturing a synthetic resin product, but in the case of the flat wire 1 for brushes of the present invention, it is inexpensive. Therefore, a cut piece of synthetic resin monofilament is preferable. Here, a method for obtaining the brush flat wire 1 from the synthetic resin monofilament will be described.

  First, in the synthetic resin monofilament, a synthetic resin chip is supplied to a melt spinning machine and melt-kneaded in the melt spinning machine, and then a synthetic resin melt is extruded from a die.

  Subsequently, the extruded synthetic resin melt is cooled and solidified in a cooling bath, and then stretched and heat set to obtain a synthetic resin monofilament.

  Then, the obtained synthetic resin monofilament is cut into a necessary length to obtain a flat wire 1 for a brush.

  Further, the flat wire 1 for brushes of the present invention includes phosphate-based, zeolite-based, hydroxyapatite-based antibacterial agents supporting silver ions, zinc oxide, zinc sulfate, zinc chloride, zinc phosphate, zinc nitrate. , Zinc compounds such as zinc carbonate, zinc acetate, zinc oxalate, zinc citrate, zinc fumarate, zinc formate, cationic antibacterial agents such as benzethonium, benzalkonium, cetylpyridinium, chlorhexidine, epigallocatechin, epigallo Antibacterial performance can also be imparted using a photocatalyst such as tea catechins such as catechin gallate, epicatechin and epicatechin gallate, anatase type or rutile type titanium dioxide.

  Hereinafter, although the Example is given and demonstrated in detail about the flat wire for brushes of this invention, this invention is not limited to a following example at all unless the summary is exceeded.

In addition, the flocking property was evaluated by using a brush material made of nylon having a thickness of 0.2 mm and a length of 30 mm, and producing 1000 toothbrushes. The specifications of the toothbrush are as follows.
Brush base material: Polypropylene (9mm x 22mm)
Number of flock holes: 34 diameters of flock holes: 1.5 mm
Depth of flocking hole: 3.0mm
Number of flocks: 20 per flock hole

[Evaluation of hair transplantation]
1000 toothbrushes were produced, and the number of defective flocks was determined as a percentage for each of the following items.
(B) Number of toothbrushes with flocking holes where the brush flats were cracked and chipped, and the brush bristle material was not well planted,
(B) The number of toothbrushes that had a flocking hole in which the brush flat line could not be cut well, and the brush bristle material was not planted,
(C) The number of toothbrushes in which there were flocking holes in which the brush wire did not pierce the brush base material well and the brush hair material was not well planted.

[Example 1]
Nylon 6 pellets (Izod impact strength (notched) 69 J / m, Rockwell hardness R119, M80) were used as raw materials.

  Nylon 6 pellets were supplied to a melt spinning machine, melted and kneaded in the melt spinning machine, and then a synthetic resin melt was extruded from the composite die.

  Subsequently, the extruded synthetic resin melt was cooled and solidified in a cooling bath, and then stretched and heat-set. As shown in FIG. 3A, the width was 1.3 mm and the thickness was 0.4 mm. A synthetic resin monofilament was produced.

  This synthetic resin monofilament was cut by 2.2 mm in the length direction, and a cut piece was used as a flat wire for a brush to prepare a toothbrush.

[Examples 2 to 6]
A synthetic resin monofilament, a brush flat wire and a toothbrush were produced under the same conditions as in Example 1 except that the raw material was changed from nylon 6 pellets to the synthetic resin shown in Table 1.

[Examples 7 to 10]
The synthetic resin monofilament, the flat wire for the brush, and the toothbrush were used under the same conditions as in Example 1 except that the cross-sectional shape of the synthetic resin monofilament was changed from (a) in FIG. 3 to (b) to (e) in FIG. Produced.

[Examples 11 to 13]
A synthetic resin monofilament, a flat wire for a brush, and a toothbrush were produced under the same conditions as in Example 8 except that the size of the cross-sectional shape was changed to the size shown in Table 1.

[Example 14]
The raw materials are polyphenylene sulfide pellets (Izod impact strength (notched) 18 J / m, Rockwell hardness M100) and nylon 6 pellets (Izod impact strength (notched) 69 J / m, Rockwell hardness R119): 80: A synthetic resin monofilament, a brush flat wire and a toothbrush were produced under the same conditions as in Example 1 except that the mixture was changed to a blend blended at a ratio of 20.

[Example 15]
Polyethylene terephthalate (Izod impact strength (notched) 39 J / m, Rockwell hardness M95) and polyester elastomer (Izod impact strength (notched) NB, Rockwell hardness D47) were blended at a ratio of 90:10. A synthetic resin monofilament, a brush flat wire and a toothbrush were produced under the same conditions as in Example 1 except that the mixture was changed to a mixture.

[Comparative Example 1]
A synthetic resin monofilament, a brush flat wire, and a toothbrush were produced under the same conditions as in Example 1 except that the cross-sectional shape of the synthetic resin monofilament was changed to a triangle.

[Comparative Examples 2 to 4]
A synthetic resin monofilament, a flat wire for a brush, and a toothbrush were produced under the same conditions as in Example 8 except that the size of the cross-sectional shape was changed to the size shown in Table 1.

[Reference Example 1]
A toothbrush was prepared using a copper brush flat wire (width 1.3 mm, thickness 0.3 mm, length 2.2 mm).

  Table 1 shows the evaluation results of the flat wires for brushes obtained in the above examples and comparative examples.

  As is clear from the results shown in Table 1, the brush flat wires (Examples 1 to 15) of the present invention are significantly larger than the brush flat wires (Comparative Examples 1 to 4) that do not satisfy the conditions of the present invention. It can be seen that the flocking property is good.

  The flat wire for a brush of the present invention is made of a synthetic resin, has sufficient hardness, has few cracks and defects during flocking, and is considered for the natural environment. In addition to various brushes such as cleaning brushes and makeup brushes, they can be widely used for various industrial brushes.

1 Flat wire for brush 2 Hair material for brush
3 Brush substrate 4 Flocking hole 5 Brush 6 Synthetic resin monofilament w Width d Thickness p Flocking direction

Claims (5)

A flat wire that is embedded in the hair follicle of the brush base material together with the brush hair material and functions to fix the brush hair material to the brush base material, and has an Izod impact strength (notched) measured according to JIS K7110 ) The main component is a synthetic resin of 15 to 100 J / m, the width of the cross section parallel to the flocking direction is 0.5 to 3.0 mm, and the thickness is also 0.1 to 1.0 mm. A flat line for brushes, characterized in that the shape is a polygon or an ellipse having a square shape or more. The flat wire for brush according to claim 1, wherein the Rockwell hardness of the synthetic resin measured according to JIS G0202 is M50 to 120 or R80 to 150. The flat wire for a brush according to claim 1 or 2, wherein the synthetic resin is at least one selected from a polyamide-based resin, a polyester-based resin, a fluorine-based resin, and a polyphenylene sulfide-based resin. The flat wire for a brush according to any one of claims 1 to 3, wherein the flat wire is a cut piece of a synthetic resin monofilament. The brush using the flat wire for brushes of any one of Claims 1-4.

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