JP2009101186A - Method for manufacturing brush - Google Patents

Method for manufacturing brush Download PDF

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JP2009101186A
JP2009101186A JP2009005462A JP2009005462A JP2009101186A JP 2009101186 A JP2009101186 A JP 2009101186A JP 2009005462 A JP2009005462 A JP 2009005462A JP 2009005462 A JP2009005462 A JP 2009005462A JP 2009101186 A JP2009101186 A JP 2009101186A
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hair
sleeve
hole
bristle
bundle
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JP4854750B2 (en
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Hirobumi Moriwaka
博文 森若
Sukenori Saito
祐紀 斎藤
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Kao Corp
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Kao Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a brush, in which orientational performance of bristle tufts is so good that the bristles are neatly arranged. <P>SOLUTION: The method includes a step of introducing bristles of a predetermined length into an introducing hole of a sleeve, and feeding the introduced bristles out of the introducing hole to be introduced into a bristle tuft inserting hole of a bristle tuft holder through a bristle installation hole at a bristle installation base part. For feeding the bristles out of the sleeve, a push pin which can be inserted into the sleeve is used. The push pin includes a part L4 having a sectional form corresponding to a cross-section of the introducing hole of the sleeve, and a tip part which corresponds to the form of a tip of the bristle tuft inserting hole. Hole diameter of the bristle tuft inserting hole is set larger than hole diameter of a bristle hole of a brush body. As/Ai ratio in the sleeve is 1.02-1.3. After the bristles are introduced into the sleeve at a bristle density of 47-75%, the introduced bristles are fed out of the sleeve, so that they are inserted into the bristle hole at a bristle density of 60-80%. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ブラシの製造方法に関わり、特に、歯ブラシの製造に好適なブラシの製造方法に関する。   The present invention relates to a method for manufacturing a brush, and more particularly to a method for manufacturing a brush suitable for manufacturing a toothbrush.

ブラシの製造方法として、従来より、所定の長さに切断された用毛の集合からスリーブを用いて用毛束を取り出し、スリーブ内に納められた用毛束を金型等に設けられた孔に挿入し、樹脂等で用毛束を固定する方法は知られていた。
しかし、用毛のねじれ等の原因により、用毛束の先端部が広がってしまったり、製造工程の中で用毛が折れてしまったり、用毛束の先端が揃わずに所望の性能や外観が得られなかったりする課題があった。
このため、リール等に巻き取られた長尺の用毛を必要本数巻き出して束ね、それを金型等の挿入口に束に揃えたまま挿入し、必要な長さに切断するという方法が一般的に採用されているのが現状である。
As a method of manufacturing a brush, conventionally, a hair bundle is taken out from a set of hairs cut to a predetermined length using a sleeve, and the hair bundle stored in the sleeve is provided in a mold or the like. A method of inserting the hair bundle into the hair and fixing the hair bundle with resin or the like has been known.
However, due to twisting of the hair, etc., the tip of the hair bundle spreads, the hair breaks during the manufacturing process, or the tips of the hair bundle are not aligned and the desired performance and appearance There was a problem that could not be obtained.
For this reason, there is a method in which a necessary number of long hairs wound on a reel or the like are unwound and bundled, inserted into the insertion port of a mold or the like while being aligned, and cut to a required length. Currently, it is generally adopted.

しかし、この方法では必要な用毛束の本数を賄うために多数のリールを製造ラインに設ける必要があり、非常に大掛かりな設備を必要とするほか、トラブルなどが生じた場合に復旧するための時間と材料ロスが多く、生産性の低下とコストアップの原因となる。また、使用する用毛の種類や植毛パターン等の変更に多くの人手、時間、費用を必要とするため、一つの設備で多品種の製品を生産したり、モデルチェンジを短期間で行う製品の生産には向かない。   However, in this method, it is necessary to provide a large number of reels in the production line in order to cover the necessary number of hair bundles. In addition to requiring very large equipment, it is also necessary to recover when trouble occurs. There is a lot of time and material loss, which causes a decrease in productivity and an increase in cost. In addition, since it takes a lot of manpower, time, and expense to change the type of hair to be used and the flocking pattern, etc., it is possible to produce a wide variety of products with a single facility or to change models quickly. Not suitable for production.

所定長さに切断された用毛の集合にスリーブを差し込んで該スリーブ内に導入した後に、該スリーブ内に導入された該用毛を送出して植毛する工程を具備するブラシの製造方法に関する従来技術としては、例えば、下記特許文献1に記載の技術が知られている。
この技術は、用毛の集合からスリーブを用いて用毛束を取り出し、スリーブ内に納められた用毛束を金型に設けられた孔に挿入するものである。
A conventional brush manufacturing method comprising a step of inserting a sleeve into a set of bristle cut to a predetermined length and introducing the sleeve into the sleeve, and then feeding and planting the bristle introduced into the sleeve As a technique, for example, a technique described in Patent Document 1 below is known.
According to this technique, a hair bundle is taken out from a set of hairs using a sleeve, and the hair bundle stored in the sleeve is inserted into a hole provided in a mold.

ところで、この技術では、スリーブに導入された用毛束をその状態のまま金型内に挿入し、用毛束の一方の端部を加熱溶融して連続したベースを形成し、次いで成形材料を充填して用毛束を固定しているため、スリーブに用毛を導入する工程、加熱溶融でベースを形成する工程、成形材料を充填する工程の各工程において、用毛束の配向状態と整列状態に大きな乱れが生じてしまう課題を有していた。
また、この技術では、金型の孔に挿入される用毛束の密度を高くすることができないので、成形金型のキャビティー内に樹脂を充填したときに、金型に設けられた孔から樹脂が漏れ出してしまう問題があった。
By the way, in this technique, the bristle bundle introduced into the sleeve is inserted into the mold as it is, one end of the bristle bundle is heated and melted to form a continuous base, and then the molding material is formed. Since the bristle bundle is fixed by filling, the orientation of the bristle bundle is aligned and aligned in each step of introducing the bristle into the sleeve, forming the base by heating and melting, and filling the molding material. There was a problem that the state was greatly disturbed.
Further, in this technique, the density of the hair bundle inserted into the mold hole cannot be increased, so that when the resin is filled in the cavity of the molding mold, the density of the hair bundle is reduced. There was a problem that the resin leaked out.

一方、下記特許文献2には、用毛の供給体にスリーブを差し込んで用毛束を取り出し、スリーブ内の用毛をバイスに移動させ、次いでバイスからブラシ本体のヘッド(ベース部材)に形成された複数の孔に用毛束を挿入するブラシの製造方法が開示されている。   On the other hand, in Patent Document 2 below, a sleeve is inserted into a bristle supply body, a bristle bundle is taken out, the bristle in the sleeve is moved to a vise, and then the head (base member) of the brush body is formed from the vice. Also disclosed is a method for manufacturing a brush in which a hair bundle is inserted into a plurality of holes.

特表平9−510642号公報Japanese National Patent Publication No. 9-510642 特許第3226276号公報Japanese Patent No. 3226276

しかしながら、この技術では、スリーブ内の用毛束の配向状態と整列状態が不十分になるほか、用毛束の一部しかバイスで把持していないために、下記1〜4のような問題があった。
1.スリーブからバイスへの移し替えを行うときに、用毛束が乱れる。
2.用毛束の一部だけしか把持していないため、把持部を除く用毛束の両端が開いてしまう。
3.ダイにより用毛束の両端を整形する工程で用毛束が乱れる。
4.ベース部材に設けられた孔に用毛束を挿入する際に、用毛が折れたり、用毛束のねじれが生じて挿入自体が困難であり、挿入できたとしても用毛束の乱れが著しくなる。
このため、得られるブラシにおいて、植毛された用毛束の配向状態と整列状態は十分な品質を満たすものにはならない。またこの技術では、用毛束の先端形状を形成することも困難である。
However, in this technique, the orientation state and the alignment state of the hair bundle in the sleeve become insufficient, and only a part of the hair bundle is gripped by the vice, so the following problems 1 to 4 occur. there were.
1. When transferring from the sleeve to the vice, the hair bundle is disturbed.
2. Since only a part of the hair bundle is gripped, both ends of the hair bundle except for the grip portion are opened.
3. The hair bundle is disturbed in the process of shaping both ends of the hair bundle with the die.
4). When inserting the hair bundle into the hole provided in the base member, the hair is broken or the hair bundle is twisted, and the insertion itself is difficult. Become.
For this reason, in the obtained brush, the orientation state and the alignment state of the hair bundle for flocking do not satisfy sufficient quality. Also, with this technique, it is difficult to form the tip shape of the hair bundle.

従って、本発明の目的は、用毛束の配向性に優れ、用毛がきれいに整列したブラシを製造することができるブラシの製造方法を提供することにある。
ここで、用毛束の配向性に優れるとは、用毛束を構成する個々の用毛が、ねじれたり折れ曲がったりせずに、その長さ方向に伸び、束としてきれいにまとまっている状態をいい、用毛がきれいに整列している状態とは、前記用毛束の配向性と合わせて、用毛束の先端部が所望の形状となるように個々の用毛の先端が所定の整列形態にきれいに整列していることをいう。
Accordingly, an object of the present invention is to provide a method of manufacturing a brush that is excellent in the orientation of the hair bundle, and that can produce a brush in which the hair is neatly aligned.
Here, excellent orientation of the hair bundle means that the individual hairs constituting the hair bundle extend in the length direction without being twisted or bent and are neatly bundled as a bundle. The state in which the hairs are neatly aligned means that the tips of the individual hairs are in a predetermined alignment form so that the tips of the hair bundles have a desired shape, together with the orientation of the hair bundles. It means that it is neatly arranged.

本発明者らは、スリーブの軸方向に直交する断面積Asと該植毛孔又は該挿入部の軸方向に直交する断面積Aiとの比(As/Ai)を特定範囲とし、且つスリーブ内に導入する用毛の密度と、植毛基部の植毛孔又は金型の挿入部に挿入する用毛の密度を所定の範囲とすることにより、用毛がきれいに整列し、且つ用毛束の配向性にも優れるブラシを安定的に製造し得ることを知見した。   The inventors set the ratio (As / Ai) between the cross-sectional area As orthogonal to the axial direction of the sleeve and the cross-sectional area Ai orthogonal to the axial direction of the flock hole or the insertion portion to a specific range, and within the sleeve. By setting the density of the hair to be introduced and the density of the hair to be inserted into the flock hole of the flocking base or the insertion part of the mold within a predetermined range, the hair is neatly aligned and the orientation of the hair bundle is improved. It has been found that an excellent brush can be manufactured stably.

本発明は、前記知見に基づきなされたものであり、所定長さに切断された用毛をスリーブ内に導入した後に、導入された前記用毛を前記スリーブ内から送出して植毛基部の植毛孔又は金型の挿入部内に挿入する工程を具備するブラシの製造方法であって、前記スリーブの軸方向に直交する断面積Asと前記植毛孔又は前記挿入部の軸方向に直交する断面積Aiとの比(As/Ai)が1.02〜1.3であり、且つ該スリーブ内に47〜75%の用毛密度で該用毛を導入した後に、導入された該用毛を該スリーブ内から送出して前記植毛孔又は前記挿入部内に60〜80%の用毛密度で挿入するブラシの製造方法を提供するものである。   The present invention has been made on the basis of the above knowledge, and after introducing the hair cut to a predetermined length into the sleeve, the introduced hair is delivered from the inside of the sleeve and the flocked hole of the flocked base portion Or a brush manufacturing method comprising a step of inserting into a mold insertion portion, wherein the cross-sectional area As is perpendicular to the axial direction of the sleeve and the cross-sectional area Ai is perpendicular to the axial direction of the flocked hole or the insertion portion. The ratio (As / Ai) is 1.02 to 1.3 and the hair is introduced into the sleeve at a hair density of 47 to 75%. And a method for manufacturing a brush that is inserted into the flock hole or the insertion portion at a hair density of 60 to 80%.

本発明によれば、用毛束の配向性に優れ、用毛がきれいに整列したブラシを製造することができる。   According to the present invention, it is possible to manufacture a brush in which the hair bundle is excellent in orientation and the hair is neatly aligned.

本発明のブラシの製造方法に用いられるスリーブの一形態を模式的に示す図であり、(a)は半断面図、(b)は(a)のAの部分の要部拡大断面図である。It is a figure which shows typically one form of the sleeve used for the manufacturing method of the brush of this invention, (a) is a half sectional view, (b) is a principal part expanded sectional view of the A part of (a). . 本発明のブラシの製造方法に用いられる押圧ピンの一形態を模式的に示す図であり、(a)は側面図、(b)は正面図である。It is a figure which shows typically one form of the press pin used for the manufacturing method of the brush of this invention, (a) is a side view, (b) is a front view. スリーブ内に導入された用毛を押出ピンで押し出して植毛孔に挿入している状態を模式的に示す要部断面図である。It is principal part sectional drawing which shows typically the state which extrudes the hair introduced in the sleeve with an extrusion pin, and is inserted in the flock hole. 図3の要部を拡大した図である。It is the figure which expanded the principal part of FIG. 本発明のブラシの製造方法に用いられる装置の一形態を模式的に示す図である。It is a figure which shows typically one form of the apparatus used for the manufacturing method of the brush of this invention. 用毛の集合にスリーブを挿入して用毛を導入している状態を模式的に示す図であり、(a)はスリーブを用毛に差し込む前の状態を示す図、(b)はスリーブのノズル部を用毛に差し込んだ状態を示す図、(c)はスリーブを用毛から引き抜いた状態を示す図である。It is a figure which shows the state which has inserted the sleeve in the collection of hair, and has introduced the hair, (a) is a figure which shows the state before inserting a sleeve in hair, (b) is a figure of a sleeve The figure which shows the state which inserted the nozzle part in the hair, (c) is a figure which shows the state which pulled out the sleeve from the hair.

以下、本発明を、その好ましい実施形態として、歯ブラシの製造に適用した実施形態に基づいて、図面を参照しながら説明する。   Hereinafter, the present invention will be described as a preferred embodiment based on an embodiment applied to manufacture of a toothbrush with reference to the drawings.

先ず、所定長さに切断された多数の用毛が縦に揃えられた集合に、スリーブを差し込んで該スリーブ内に所定の用毛密度(以下、スリーブ内用毛密度ともいう。)で該用毛を導入する。   First, a sleeve is inserted into a set in which a large number of hairs cut to a predetermined length are vertically aligned, and the use is performed at a predetermined hair density (hereinafter also referred to as sleeve internal hair density) in the sleeve. Introduce hair.

前記用毛の集積密度は、用毛の太さ、用毛の材質、用毛の長さに応じて適宜設定することができるが、用毛を分離し易くする観点から50〜75%であることが好ましく、55〜70%であることがより好ましい。ここで用毛の集積密度とは、単位面積当たりの集積した用毛の総断面積の割合(百分率)である。
用毛の集積密度を上記の範囲にすることで、スリーブ内に用毛を挿入する際に、スリーブ内での用毛の密度を適切な範囲に制御しやすくなり、毛束の配向状態と整列状態をより良くすることができる。集積密度が低すぎると、スリーブ内に挿入される用毛本数が取り出す毎に不安定になるため、本数が少なくスリーブ内の用毛密度が低下した場合に、スリーブ内の用毛束の一部にがねじれが生じるなどの問題が生じやすくなる。集積密度が高すぎると、スリーブを差し込んだ際に、用毛集合の用毛の一部を押し込んでしまうなどして集合内の用毛の整列状態を乱してしまい、スリーブ内に挿入される用毛束の整列状態を悪くすることになりやすい。また、スリーブ内の用毛密度が高くなりすぎるおそれがあり、その場合にはスリーブ内で用毛束を再整列しようとしても不可能となる。用毛の集積密度を変更するためには、用毛の径方向から用毛の集合に加える力を加減したり、用毛の集合を収容する容器等の体積を増減させるなどの手段を用いることができる。
The collection density of the hair can be appropriately set according to the thickness of the hair, the material of the hair, and the length of the hair, but is 50 to 75% from the viewpoint of easily separating the hair. It is preferably 55 to 70%. Here, the accumulation density of the hair is the ratio (percentage) of the total cross-sectional area of the accumulated hair per unit area.
When the hair density is within the above range, it becomes easier to control the hair density within the sleeve within the sleeve when the hair is inserted into the sleeve, and align with the orientation of the hair bundle. The state can be improved. If the collection density is too low, the number of hairs inserted into the sleeve becomes unstable every time it is taken out, so if the number of hairs is low and the hair density in the sleeve is reduced, a part of the hair bundle in the sleeve Problems such as galling are likely to occur. If the accumulation density is too high, when the sleeve is inserted, a part of the hair of the hair set is pushed in, for example, disturbs the alignment state of the hair in the set and is inserted into the sleeve. This tends to deteriorate the alignment of the hair bundles. Further, the hair density in the sleeve may become too high, and in this case, it is impossible to realign the hair bundle in the sleeve. In order to change the density of the hair, use means such as increasing or decreasing the force applied to the hair collection from the radial direction of the hair or increasing or decreasing the volume of the container for storing the hair collection. Can do.

前記用毛には、従来から歯ブラシの用毛に用いられている通常の材質、形態を特に制限なく用いることができる。
前記用毛の材質としては、ナイロン等のポリアミド、ポリブチレンテレフタレート、ポリトリメチレンテレフタレート等のポリエステルが挙げられる。
前記用毛の長さは、5〜15mmであることが好ましく、8〜13mmであることがより好ましい。用毛13の太さは、5〜10mil(127〜254μm)であることが好ましく、7〜9mil(178〜229μm)であることがより好ましい。
For the bristles, the usual materials and forms conventionally used for bristles for toothbrushes can be used without particular limitation.
Examples of the material for the hair include polyamide such as nylon, and polyester such as polybutylene terephthalate and polytrimethylene terephthalate.
The length of the hair is preferably 5 to 15 mm, more preferably 8 to 13 mm. The thickness of the hair 13 is preferably 5 to 10 mil (127 to 254 μm), more preferably 7 to 9 mil (178 to 229 μm).

前記用毛は、略水平な整列面に当該用毛の長さ方向が垂直となるように整列させることが好ましい。   It is preferable to align the hair so that the length direction of the hair is perpendicular to a substantially horizontal alignment surface.

前記スリーブには、図1に示すように、前記用毛の集合内に差し込まれるノズル部21、及び上下に貫通し用毛が導入される用毛の導入孔22を有するものを用いることが好ましい。導入孔22の上方部は、後述する押出ピン61の挿入が行い易いように拡径されている。   As shown in FIG. 1, it is preferable to use a sleeve having a nozzle portion 21 inserted into the collection of hairs and a hair introduction hole 22 through which the hairs are introduced vertically. . The upper portion of the introduction hole 22 is expanded in diameter so that an extrusion pin 61 described later can be easily inserted.

スリーブ2における前記導入孔の軸方向に直交する断面積(As)は、用毛を挿入する植毛孔の断面積との比で後述する植毛孔の軸方向に直交する断面積(Ai:植毛孔の挿入口にテーパーを設けた場合はその部分を除いた直線部分の断面積)との比(As/Ai)が1.02〜1.3となるように設定する。特に、1.05〜1.2となるように設定することが好ましい。
前記比(As/Ai)が小さすぎると植毛孔または挿入部での用毛密度を最適な範囲に収めることが難しくなり、スリーブ内の用毛の配向状態と整列状態がより悪い状態で植毛孔または挿入部に用毛束が挿入される場合がある。また、植毛孔または挿入部における用毛密度を最適な範囲まで高くすることができなかった場合には、用毛束の一方の端部を加熱溶融工程や樹脂充填等により用毛を固定する工程において、さらに配向状態と整列状態を乱したり、植毛孔または挿入部からの樹脂漏れが生じる。
前記比(As/Ai)が大きすぎると植毛孔または挿入部の中での用毛密度が過剰に高くなりやすく、発生する応力が過剰となるため用毛束の先端が開いてしまうなどの整列状態が悪くなる。また、挿入時に各用毛が相対的にずれたりねじれたりすることで配向状態を乱したり、用毛が座屈して折れてしまうなどの挿入ミスが生じる。
The cross-sectional area (As) perpendicular to the axial direction of the introduction hole in the sleeve 2 is a ratio of the cross-sectional area perpendicular to the axial direction of the flock hole to be described later (Ai: flocked hole) When the taper is provided at the insertion opening, the ratio (As / Ai) with respect to the cross-sectional area of the straight portion excluding that portion is set to 1.02 to 1.3. In particular, it is preferable to set to 1.05 to 1.2.
If the ratio (As / Ai) is too small, it becomes difficult to keep the hair density in the flocked hole or the insertion part within the optimum range, and the flocked hole is in a state where the orientation and alignment of the hair in the sleeve are worse. Or a hair bundle may be inserted in an insertion part. In addition, when the hair density at the flock hole or the insertion portion cannot be increased to the optimum range, the step of fixing the hair by heating and melting or resin filling one end of the hair bundle In this case, the orientation state and the alignment state are further disturbed, and resin leakage from the flock holes or the insertion portion occurs.
If the ratio (As / Ai) is too large, the hair density in the flock holes or the insertion portion tends to be excessively high, and the generated stress becomes excessive, so that the tips of the hair bundles are opened. The condition gets worse. Moreover, insertion mistakes such as disturbing the orientation state due to relative displacement or twisting of each hair during insertion, or buckling and breaking of the hair are caused.

ノズル部21は、用毛の集合に差し込んで導入孔22内に用毛を導入した後スリーブを引き上げて用毛を分離するときに、ノズル部21の周りの用毛がつられて引き上げられるのを抑えることができるように、全体として先細る形態とすることが好ましい。この角度θ1は、0.5〜5°であることが好ましい。また、ノズル部21の肉厚t1は、用毛の集合に挿入しやすくする点から0.1〜1mmであることが好ましい。ノズル部21の長さL1は、用毛の長さに応じて適宜設定することができるが、ノズル部の剛性、耐久性を確保すること、ノズル部の作成の難易度、コストを下げる点から用毛長さの100〜150%であることが好ましい。   When the nozzle portion 21 is inserted into a set of hairs and the hair is introduced into the introduction hole 22 and then the sleeve is pulled up to separate the hair, the hair around the nozzle portion 21 is pulled up and pulled up. It is preferable to have a tapered shape as a whole so that it can be suppressed. This angle θ1 is preferably 0.5 to 5 °. Moreover, it is preferable that the wall thickness t1 of the nozzle part 21 is 0.1-1 mm from the point which makes it easy to insert in the aggregate | assembly of hair. The length L1 of the nozzle portion 21 can be set as appropriate according to the length of the hair, but from the viewpoint of ensuring the rigidity and durability of the nozzle portion, the difficulty in creating the nozzle portion, and the cost. It is preferable that it is 100 to 150% of the hair length.

ノズル部21は、先端部にさらに先細るテーパー部21aを有している。テーパー部21aの先端の肉厚t2は、用毛1本の直径よりも薄くすることが好ましい。このように、テーパー部21aの先端の肉厚を、用毛1本の直径よりも薄くすることで、テーパー部21aの先端部が3本の用毛に跨る(当該肉厚内に用毛1本が収まる)ことがなく、ノズル部21が用毛の間にスムーズに挿入される。このテーパー部21aの先端部の肉厚t2は、0.05〜0.3mmであることが好ましい。テーパー部21aの先端は、丸め加工を施しても良い。また、テーパー部21aの角度θ2は、ノズル部の剛性、耐久性を確保すること、ノズル部の製作の難易度、コストを下げる、用毛の集合に挿入し易くする点から5〜45度であることが好ましい。   The nozzle portion 21 has a tapered portion 21a that further tapers at the tip portion. The wall thickness t2 at the tip of the tapered portion 21a is preferably thinner than the diameter of one hair. Thus, by making the thickness of the tip of the taper portion 21a thinner than the diameter of one hair, the tip of the taper portion 21a straddles the three hairs (the hair 1 within the thickness). The nozzle portion 21 is smoothly inserted between the hairs. The thickness t2 of the tip of the tapered portion 21a is preferably 0.05 to 0.3 mm. The tip of the taper portion 21a may be rounded. In addition, the angle θ2 of the tapered portion 21a is 5 to 45 degrees from the viewpoint of ensuring the rigidity and durability of the nozzle section, the difficulty of manufacturing the nozzle section, reducing the cost, and facilitating insertion into a set of hairs. Preferably there is.

スリーブ2は、前記導入孔22の直線部分(前記拡径部分を除く長さ方向に直交する断面が一定な部分)の長さL3が前記用毛の長さの110〜300%とすることが好ましい。該直線部分が短すぎると、押出ピン60がスリーブ2内で後退した時に、先端部60aの一部が導入孔22拡径部分にかかってしまい挿入を不安定にしたり、用毛の長さの変更に対応できなくなる場合があり、該直線部分が長すぎると、押出ピン60のL4が長くなると曲がりやすくなり、スリーブ2の導入孔22と接触する可能性がある。   In the sleeve 2, the length L3 of the straight portion of the introduction hole 22 (the portion having a constant cross section perpendicular to the length direction excluding the enlarged diameter portion) may be 110 to 300% of the length of the hair. preferable. If the straight portion is too short, when the push pin 60 is retracted in the sleeve 2, a part of the tip portion 60a is applied to the diameter-enlarged portion of the introduction hole 22 so that the insertion becomes unstable or the length of the hair is long. There is a case where it becomes impossible to cope with the change, and if the straight portion is too long, if the L4 of the extrusion pin 60 becomes long, it becomes easy to bend and there is a possibility that it contacts the introduction hole 22 of the sleeve 2.

スリーブ2は、加工精度、耐久性、剛性、コスト等の点から炭素工具鋼、合金工具鋼、ハイス等の金属製とすることが好ましい。   The sleeve 2 is preferably made of metal such as carbon tool steel, alloy tool steel, and high speed steel from the viewpoint of processing accuracy, durability, rigidity, cost, and the like.

また、ノズル部21の外表面は、当該ノズル部21を用毛の集合に差し込む際の抵抗を抑える点から、無電解メッキを施したり、テフロン(登録商標)樹脂等で表面加工を施す等することによって、表面を潤滑に仕上げることが好ましい。   Further, the outer surface of the nozzle portion 21 is subjected to electroless plating, surface treatment with Teflon (registered trademark) resin, or the like from the viewpoint of suppressing resistance when the nozzle portion 21 is inserted into a set of hairs. It is preferable to finish the surface by lubrication.

前記スリーブ内用毛密度は、47〜75%であり、好ましくは55〜70%、さらに好ましくは60〜65%とする。該スリーブ内用毛密度が低すぎると用毛の集合から取り出した時の整列状態をスリーブ内で維持できない場合があり、高すぎると押出し抵抗が大きくなり、押出ピンと導入孔との間に用毛が噛み込んでしまったり、各用毛間のずれの抵抗が大きくなり、用毛の先端部を所定の整列形態に整列させる時に、当該整列形態に対応した形状とならない場合がある。ここで、スリーブ内用毛密度は、(挿入される用毛の長さ方向に直交する断面積の総和)/(スリーブの直線部分における軸方向に直交する断面積)をいう。スリーブ内用毛密度を変更するためには、用毛の集合内の集積密度を増減させる、スリーブの先端開口部の面積、形状を変更するなどの手段を用いることができる。   The hair density in the sleeve is 47 to 75%, preferably 55 to 70%, more preferably 60 to 65%. If the hair density in the sleeve is too low, the alignment state when it is taken out from the collection of hairs may not be maintained in the sleeve, and if it is too high, the extrusion resistance increases, and the hair is between the extrusion pin and the introduction hole. May be bitten, or the resistance of displacement between the hairs will increase, and when the tips of the hairs are aligned in a predetermined alignment form, the shape may not correspond to the alignment form. Here, the hair density in the sleeve means (total cross-sectional area perpendicular to the length direction of the hair to be inserted) / (cross-sectional area perpendicular to the axial direction in the linear portion of the sleeve). In order to change the hair density in the sleeve, means such as increasing / decreasing the accumulation density in the collection of hairs, changing the area and shape of the front end opening of the sleeve, and the like can be used.

次に、前記スリーブ内用毛密度で前記スリーブ内に導入された前記用毛を、該スリーブ内から送出する。前記スリーブ内からの前記用毛の送出には、図2に示すような、前記スリーブ内に挿入可能な押出ピン60が用いられる。   Next, the bristle introduced into the sleeve at the bristle hair density is delivered from the sleeve. For the delivery of the hair from the sleeve, an extrusion pin 60 that can be inserted into the sleeve as shown in FIG. 2 is used.

押出ピン60は、前記スリーブ内に導入された前記用毛が前記導入孔の送出口から全て送出できるように、その先端部から所定長さ(L4)の部分が、前記導入孔における前記直線部分の長さ方向に直交する断面に対応する断面形態を有している。この所定長さの部分は、前記導入部の内面との間に用毛の太さより狭い所定のクリアランスに設けることが好ましい。このクリアランスは、0.02〜0.15mmであることが好ましい。このクリアランスが狭すぎると押出ピンが導入孔に接触する可能性があり、広すぎると押出ピンと導入孔との間に用毛が噛み込んでしまう場合がある。   The extruding pin 60 has a portion of a predetermined length (L4) from the tip thereof so that the bristles introduced into the sleeve can all be fed from the outlet of the introduction hole. It has a cross-sectional form corresponding to a cross section orthogonal to the length direction. It is preferable that the predetermined length portion is provided in a predetermined clearance narrower than the thickness of the bristle between the inner surface of the introduction portion. This clearance is preferably 0.02 to 0.15 mm. If this clearance is too narrow, the extrusion pin may come into contact with the introduction hole, and if it is too wide, the bristle may be caught between the extrusion pin and the introduction hole.

押出ピン60の先端部60aは、用毛の先端部を所定の整列形態に整列させる場合には、当該整列形態に対応した形状とすることが好ましい。例えば、図3及び図4に示すように用毛保持治具8の挿入孔80の先端を曲面状の形態とし、用毛の先端をこれに対応させて曲面状に整列させた形態とする場合には、押出ピン60の先端60aを、図2に示すように、その曲率に応じて送出方向に直交する面で段を設けたり、当該形態に対応するように曲面状に設けておき、スリーブ2内の用毛10を予め最終的な曲面状の形態に対応した形態とすることが好ましい。押出ピンの先端を曲面状に設ける場合には、押出ピンの先端の外縁から内側に所定幅に、送出方向に直交する面を設けることが好ましい。   When the front end portion 60a of the push pin 60 is arranged in a predetermined alignment form, it is preferable to have a shape corresponding to the alignment form. For example, as shown in FIG. 3 and FIG. 4, when the tip of the insertion hole 80 of the hair holding jig 8 has a curved shape, and the tip of the hair corresponds to this and is arranged in a curved shape. 2, the tip 60a of the extrusion pin 60 is provided with a step on the surface orthogonal to the feeding direction according to the curvature thereof, as shown in FIG. 2, or is provided with a curved surface so as to correspond to the form. It is preferable to make the hair 10 in the shape corresponding to the final curved shape in advance. When the tip of the push pin is provided in a curved shape, it is preferable to provide a surface perpendicular to the feed direction with a predetermined width inside from the outer edge of the tip of the push pin.

そして、前記植毛基部の植毛孔内に所定の用毛密度(植毛孔内用毛密度:以下、単に植毛密度ともいう。)で前記用毛を挿入する。   And the said hair is inserted in the flock hole of the said flock base by the predetermined hair density (the hair density in a flock hole: Hereinafter, it is also only called the flock density).

前記植毛密度は、60〜80%とすることが好ましく、より好ましくは65〜75、さらに好ましくは70〜75。ここで、植毛密度は、(挿入される用毛の長さ方向に直交する断面積の総和)/(植毛孔の軸方向に直交する断面積)をいう。植毛密度を上記の範囲とすることで、ブラシ用毛束の配向状態と整列状態を一層良好な状態にすることができる。植毛密度が高すぎる場合は、植毛孔内または挿入部内での用毛密度が過剰に高くなりやすく、発生する応力が過剰となるため用毛束の先端が開いてしまうなどの配向状態が悪くなる。また、挿入時に各用毛が相対的にずれたりねじれたりすることで整列状態を乱したり、用毛が座屈して折れてしまうなどの挿入ミスが生じやすい。植毛密度が低すぎる場合は、用毛束の一方の端部を加熱溶融工程や樹脂充填等により用毛を固定する工程において、さらに配向状態と整列状態を乱したり、植毛孔または挿入部からの樹脂漏れが生じたりしやすい。植毛密度を変更するためには、前記スリーブ内用毛密度を変更したり、面積比(As/Ai)を変更するなどの手段を用いることができる。   The flocking density is preferably 60 to 80%, more preferably 65 to 75, and still more preferably 70 to 75. Here, the flocking density refers to (total cross-sectional area orthogonal to the length direction of the inserted hair) / (cross-sectional area orthogonal to the axial direction of the flock hole). By setting the flocking density within the above range, the orientation state and the alignment state of the hair bundle for a brush can be further improved. If the flocking density is too high, the hair density in the flocking hole or the insertion part tends to be excessively high, and the generated stress becomes excessive, so that the orientation state such as the tip of the hair bundle opening becomes worse. . In addition, the insertion hairs are likely to be misaligned when they are relatively displaced or twisted at the time of insertion, or the insertion hair is buckled and bent. If the flocking density is too low, in one step of fixing the bristles by heating and melting or resin filling one end of the bristles, the orientation and alignment may be further disturbed, The resin leaks easily. In order to change the hair density, means such as changing the sleeve internal hair density or changing the area ratio (As / Ai) can be used.

植毛孔の軸方向に直交する断面積Asは、スリーブの軸方向に直交する断面積Asに応じて適宜設定することができる。植毛孔の挿入口には外方に向けてテーパー状に漸次拡径する拡径部を設けることが好ましい。テーパーを設けることで用毛束の挿入が容易になると同時に、スリーブ内の用毛束の整列状態と配向状態を挿入後も維持しやすくなる。また、用毛の挿入方向に対して、植毛孔または挿入部の深さ方向が傾斜している場合であっても、整列状態と配向状態とを維持したまま挿入することができる。さらに、挿入口にテーパーを設けずに、複数の植毛孔に対応した孔を有し且つその一方にテーパーを設けた補助部材を植毛基部または金型とスリーブの間に配置し、補助部材を通して用毛束を挿入する方法も好ましく用いることができる。該拡径部の角度θ3(図4参照)は、20〜120°であることが好ましい。   The cross-sectional area As orthogonal to the axial direction of the flock hole can be appropriately set according to the cross-sectional area As orthogonal to the axial direction of the sleeve. It is preferable to provide a diameter-expanded portion that gradually increases in a tapered shape toward the outside at the insertion port of the flock hole. By providing the taper, the hair bundle can be easily inserted, and at the same time, the alignment state and the orientation state of the hair bundle in the sleeve can be easily maintained after the insertion. Moreover, even when the depth direction of the flock hole or the insertion portion is inclined with respect to the insertion direction of the hair, it can be inserted while maintaining the alignment state and the orientation state. In addition, an auxiliary member having a hole corresponding to a plurality of flocked holes and having a taper on one of them is arranged between the flocked base or the mold and the sleeve without providing a taper at the insertion port, and is used through the auxiliary member. A method of inserting a hair bundle can also be preferably used. The angle θ3 (see FIG. 4) of the enlarged diameter portion is preferably 20 to 120 °.

植毛基部の好ましい寸法設定としては、用毛束の整列状態と配向状態を考慮し、図4に示す如く、植毛基部の肉厚a2を1mm〜3mm、植毛孔12aの有効孔部の長さ(直線部分)a1を0.5mm〜2.5mmに設定することが好ましい。また、植毛基部の植毛孔12aの孔径に対し、用毛束保持具8の挿入孔80の孔径については、同一径が基本であるが、用毛束の挿入性を考慮し、挿入孔80の孔径の方を植毛孔12aの孔径よりも0.05mm〜0.2mm程度大きく設定することが好ましい。   As a preferable dimension setting of the flocked base, in consideration of the alignment and orientation of the hair bundle, as shown in FIG. 4, the thickness a2 of the flocked base is 1 mm to 3 mm, and the effective hole length of the flocked hole 12a ( The straight portion a1 is preferably set to 0.5 mm to 2.5 mm. Further, the hole diameter of the insertion hole 80 of the hair bundle holder 8 is basically the same as the hole diameter of the flock hole 12a of the hair implantation base, but the insertion hole 80 is considered in consideration of the insertability of the hair bundle. It is preferable to set the hole diameter larger by about 0.05 mm to 0.2 mm than the hole diameter of the flocked hole 12a.

本実施形態の方法は、例えば、図5に示すような装置1で行うことができる。
装置1は、所定長さに切断された用毛の集合から所定本数の該用毛を分離して移送する装置であり、前記用毛の集合にスリーブ2を差し込むようにz軸方向に移動させる移動手段3と、前記用毛の集合にスリーブ2を支持する支持手段4と、押出ピン60を用毛の送出方向に移動させる用毛の送出手段6とを備えている。
The method of this embodiment can be performed with the apparatus 1 as shown in FIG. 5, for example.
The device 1 is a device that separates and transfers a predetermined number of hairs from a set of hairs cut to a predetermined length, and moves in the z-axis direction so as to insert a sleeve 2 into the set of hairs. A moving means 3, a supporting means 4 for supporting the sleeve 2 on the bristles, and a hair feeding means 6 for moving the push pin 60 in the hair feeding direction are provided.

前記用毛の送出手段6は、押出ピン60を上下動させる上下動機構61とを備えている。   The bristle delivery means 6 includes a vertical movement mechanism 61 that moves the push pin 60 up and down.

次に、図6(a)に示すように、上述のようにして集積された用毛の集合の上方に、前記スリーブ2を移動させる。そして、図6(b)に示すように、前記移動手段3によってスリーブ2を降下させてノズル部21を用毛10内に差し込み、当該スリーブ2の導入孔22内に所定本数の用毛10を導入する。   Next, as shown in FIG. 6A, the sleeve 2 is moved above the set of hairs accumulated as described above. Then, as shown in FIG. 6 (b), the sleeve 2 is lowered by the moving means 3 to insert the nozzle portion 21 into the hair 10, and a predetermined number of hairs 10 are placed in the introduction hole 22 of the sleeve 2. Introduce.

次に、導入孔22内に用毛を導入した後、前記移動手段3によって、図6(c)に示すように、導入された前記用毛10を前記スリーブ2とともに引き上げる。   Next, after the hair is introduced into the introduction hole 22, the introduced hair 10 is pulled up together with the sleeve 2 by the moving means 3 as shown in FIG.

次に、図3に示すように、内部に用毛10が導入されたスリーブ2を用毛束保持治具8上に固定された歯ブラシ本体11の上方に移動させる。そして、用毛の送出手段6の前記上下動機構61によって押出ピン60を降下させて用毛10をその先端形状を用毛束保持具8の用毛束挿入孔80の先端形状に対応させて整列させながら、歯ブラシ本体11の植毛基部12の植毛孔12aを介して当該用毛束挿入孔80内に挿入する。そして、一つの用毛束の植毛工程が完了する。   Next, as shown in FIG. 3, the sleeve 2 in which the bristle 10 is introduced is moved above the toothbrush body 11 fixed on the bristle bundle holding jig 8. Then, the push-out pin 60 is lowered by the vertical movement mechanism 61 of the bristle delivery means 6 so that the tip of the hair 10 corresponds to the tip of the bristle bundle insertion hole 80 of the bristle bundle holder 8. While being aligned, the toothbrush main body 11 is inserted into the bristle bundle insertion hole 80 through the flocking hole 12a of the flocking base 12. And the flocking process of one hair bundle is completed.

全ての植毛孔についての植毛工程が終了した後、スリーブ2及び押出ピン60を退避させ、植毛孔12aから突出する用毛束の溶融端部を、レーザービーム等の所定の溶融手段(図示せず)で溶融させて溶融塊を形成する。そして、射出成形や、接着剤による被覆等の常法によって、植毛部12の背面部を形成して歯ブラシの製造を終了する。   After completion of the flocking process for all the flocked holes, the sleeve 2 and the push pin 60 are retracted, and the melting end portion of the hair bundle protruding from the flocked hole 12a is replaced with a predetermined melting means (not shown) such as a laser beam. ) To form a molten mass. Then, the back portion of the flocked portion 12 is formed by a conventional method such as injection molding or coating with an adhesive, and the manufacture of the toothbrush is completed.

以上説明したように、本実施形態よれば、用毛束の配向性に優れ、用毛がきれいに整列したブラシを製造することができる。   As described above, according to this embodiment, it is possible to manufacture a brush in which the hair bundle is excellent in orientation and the hair is neatly aligned.

また、本実施形態によれば、用毛束保持具8に植毛基部を位置決め固定した上で射出成形を行うので、射出成形用の金型に用毛の挿入部を形成して直接射出成形を行う場合に比べて樹脂漏れが起こりにくい。
また、弾性変形が可能な樹脂製の植毛基部を用いることで、スリーブでの用毛の集合から取り出す用毛の本数の振れによる植毛孔内での用毛束の圧力の振れを小さくすることができ、用毛束の配向状態と整列状態の乱れを抑えることができる。
また、本数が多く振れた場合であっても挿入抵抗を小さくできるので、用毛の折れや整列状態の乱れを抑えることができる。
Further, according to the present embodiment, since the flocking base portion is positioned and fixed to the hair bundle holder 8 and injection molding is performed, the insertion portion of the hair is formed in the injection mold and direct injection molding is performed. Resin leakage is less likely to occur than when performing.
Further, by using a resin-made flocking base that can be elastically deformed, it is possible to reduce the fluctuation of the pressure of the hair bundle in the flocked hole due to the fluctuation of the number of hairs to be taken out from the collection of hairs in the sleeve. It is possible to suppress disturbances in the orientation state and the alignment state of the hair bundle.
In addition, even when the number of wires is large, the insertion resistance can be reduced, so that it is possible to suppress breakage of the hair and disorder of the alignment state.

本発明は、前記実施形態に制限されるものではなく、本発明の趣旨を逸脱しない範囲で適宜変更することができる。   The present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention.

本発明は、予め用毛束に対応した本数に分離された複数本の用毛を気流によりスリーブ内に導入した後に、導入された該用毛を該スリーブ内から送出して前記植毛孔又は前記挿入部に前記所定の用毛密度で挿入する場合にも適用することができる。この場合には、該スリーブ内に47〜75%、特に50〜60%で該用毛を導入することが好ましい。   The present invention introduces a plurality of hairs separated in advance corresponding to the hair bundle into the sleeve by an air flow, and then sends the introduced hair from the sleeve to send the flock hole or the hair The present invention can also be applied when inserting into the insertion portion with the predetermined hair density. In this case, it is preferable that the hair is introduced into the sleeve at 47 to 75%, particularly 50 to 60%.

前記実施形態では、植毛基部の植毛孔を介して用毛を用毛束保持具の挿入孔に挿入するようにしたが、用毛束の挿入対象はこれに制限されるものではない。例えば、歯ブラシの植毛部のキャビティを構成する金型に設けられた用毛束挿入孔、複数の用毛束を所定の方向に配向させるキャリッジ等の複数の挿入孔を有する治具の当該挿入孔等も用毛束の挿入対象とすることができる。   In the above-described embodiment, the hair is inserted into the insertion hole of the hair bundle holder through the flocking hole of the flocking base, but the insertion target of the hair bundle is not limited thereto. For example, the insertion hole of a jig having a plurality of insertion holes, such as a hair bundle insertion hole provided in a mold constituting the cavity of the flocking portion of the toothbrush, and a plurality of hair bundles oriented in a predetermined direction Etc. can also be the insertion target of the hair bundle.

本発明は、前記実施形態におけるように、歯ブラシの製造に特に好適であるが、歯ブラシ以外のブラシの製造、例えば、ヘアブラシ、マッサージブラシ、洗浄ブラシその他の各種ブラシの製造にも適用することができる。   The present invention is particularly suitable for the production of toothbrushes as in the above embodiment, but can also be applied to the production of brushes other than toothbrushes, for example, the production of hair brushes, massage brushes, cleaning brushes and other various brushes. .

以下、本発明を実施例によりさらに具体的に説明する。   Hereinafter, the present invention will be described more specifically with reference to examples.

下記実施例1〜8及び下記比較例1〜12のように用毛を植毛孔に挿入し、植毛孔から突出する端部を下記のようにして溶融して溶融塊を形成し、下記のように射出成形によって当該溶融塊を被覆して植毛し、所定の歯ブラシを得た。そして、その際の評価を下記のように行った。それらの結果を表1に示す。   As shown in Examples 1 to 8 and Comparative Examples 1 to 12 below, the hair is inserted into the flocked hole, and the end protruding from the flocked hole is melted as follows to form a molten mass, as described below. Then, the melted mass was coated and transplanted by injection molding to obtain a predetermined toothbrush. And the evaluation in that case was performed as follows. The results are shown in Table 1.

〔実施例1〜8〕
下記用毛を用い、表1に示すように、前記スリーブの軸方向に直交する断面積Asと該植毛孔又は該挿入部の軸方向に直交する断面積Aiとの比(As/Ai)、スリーブ内用毛密度及び植毛孔内用毛密度を変化させて下記植毛孔に植毛した。
<用毛>
用毛:ナイロン製、長さ13mm、太さ0.203mm
用毛集積密度:60%
[Examples 1-8]
Using the following hair, as shown in Table 1, the ratio (As / Ai) between the cross-sectional area As orthogonal to the axial direction of the sleeve and the cross-sectional area Ai orthogonal to the axial direction of the flocked hole or the insertion portion, The hair density in the sleeve and the hair density in the flock hole were changed, and the hair was implanted into the flock hole below.
<Bristles>
Hair: Nylon, length 13mm, thickness 0.203mm
Hair density: 60%

<スリーブ>
導入部:長さ(L3)29mm、断面形状0.9×2.32mm、トラック円 断面積1.914mm2
ノズル部:長さ(L1)16mm
<Sleeve>
Introduction part: length (L3) 29 mm, cross-sectional shape 0.9 × 2.32 mm, track circle cross-sectional area 1.914 mm 2
Nozzle part: Length (L1) 16mm

<植毛孔>
植毛基部:ポリプロピレン
植毛孔:深さ(直線部分)1.0mm、断面形状0.8×2.2mmトラック円、断面積1.623平方ミリメートル
<Flocking hole>
Flocked base: polypropylene Flocked hole: depth (straight portion) 1.0 mm, cross-sectional shape 0.8 × 2.2 mm track circle, cross-sectional area 1.623 square millimeters

<送出条件>
押出ピンの断面形状:スリーブ断面形状に対して−20μmオフセットした。
送出速度:100mm/sec
<Transmission condition>
Extrusion pin cross-sectional shape: offset by −20 μm from sleeve cross-sectional shape.
Delivery speed: 100mm / sec

<溶融塊形成条件>
炭酸ガスレーザー出力13w、スポット径0.15mm、スキャニング速度150mm。
<Condition for melt mass formation>
Carbon dioxide laser output 13w, spot diameter 0.15mm, scanning speed 150mm.

<射出成形条件(植毛基部背面充填)>
樹脂温度:220℃、射出圧力(樹脂圧):300kg/cm2
<Injection molding conditions (Filled base back filling)>
Resin temperature: 220 ° C., injection pressure (resin pressure): 300 kg / cm 2

〔植毛後の用毛束のねじれ〕
植毛後の用毛束のねじれを下記三段階で評価した。
○:植毛された用毛束先端の用毛軸方向に投影された用毛束形状が、植毛孔形状とほぼ相似形状と認識でき、用毛の軸方向がほぼ揃っている。
△:用毛の軸方向が植毛孔形状周方向へ傾いているが、植毛孔形状とほぼ相似形状と認識できる。
×:用毛の軸方向が植毛孔形状周方向に大きく傾き、用毛束が花びら状に広がり、植毛孔形状が認識できない。
[Twisting of hair bundle after flocking]
The twist of the hair bundle after flocking was evaluated in the following three stages.
○: The hair bundle shape projected in the direction of the hair axis at the tip of the hair bundle that has been flocked can be recognized as being substantially similar to the shape of the flock hole, and the axial direction of the hair is almost aligned.
(Triangle | delta): Although the axial direction of a hair is inclined to the flock hole shape circumferential direction, it can recognize as a flock hole shape and a substantially similar shape.
X: The axial direction of the hair is greatly inclined in the circumferential direction of the flock hole shape, the bristles spread in a petal shape, and the flock hole shape cannot be recognized.

〔植毛後の用毛束の整列性〕
植毛後の用毛束の整列性を下記三段階で評価した。
○:植毛された用毛束先端の用毛軸方向に投影された用毛束形状が、植毛孔形状とほぼ相似形状と認識でき、用毛の軸方向がほぼ揃っている。
△:植毛された用毛束のうち数本が用毛束軸方向に対し傾き、隣接する用毛束に接触するまたは基部の幅を超えない範囲にある。
×:植毛された用毛束のうち数本または多数が用毛束軸方向に対し傾き、隣接する用毛束内に入り込むまたは基部の幅を超える。
[Alignment of hair bundles after flocking]
The alignment property of the hair bundle after flocking was evaluated in the following three stages.
○: The hair bundle shape projected in the direction of the hair axis at the tip of the hair bundle that has been flocked can be recognized as being substantially similar to the shape of the flock hole, and the axial direction of the hair is almost aligned.
(Triangle | delta): It exists in the range which several of the hair bundles for which it was flocked incline with respect to the hair bundle axial direction, and it does not exceed the width | variety of a base which contacts the adjacent hair bundle.
X: Some or many of the hair bundles planted are inclined with respect to the hair bundle axis direction, and enter the adjacent hair bundle or exceed the width of the base portion.

〔集合内の毛折れ〕
用毛の集合内における毛折れを下記三段階で評価した。
○:スリーブで取り出された用毛束内に折れた用毛がほとんど混入しない。
△:定期的に用毛の集合内より折れた毛を除去しないと、スリーブで取り出された用毛束に折れた用毛が混入する。
×:スリーブで取り出された用毛束内に折れた用毛が混入し、連続して植毛できない。
[Broken hair in the assembly]
The broken hair in the set of hairs was evaluated in the following three stages.
○: Almost no broken hair is mixed in the hair bundle taken out by the sleeve.
(Triangle | delta): If the broken hair is not removed from the collection of regular hair regularly, the broken hair will mix in the bristle bundle taken out with the sleeve.
X: Broken hair is mixed in the hair bundle taken out with the sleeve, and cannot be implanted continuously.

〔植毛後の毛立ち〕
植毛後における用毛の毛立ちを下記三段階で評価した。
○:植毛された用毛束先端の用毛軸方向に投影された用毛束形状が、植毛孔形状とほぼ相似形状と認識でき、用毛の軸方向がほぼ揃っている。
△:用毛の軸方向が植毛孔形状周方向と略直交する方向へ傾いているが、植毛孔形状とほぼ相似形状と認識できる。広がりが植毛孔寸法の1.2倍以下。
×:用毛の軸方向が植毛孔形状周方向と略直交する方向へ大きく傾き、広がりが植毛孔寸法の1.2倍を超える、または植毛孔形状が認識できない。
[Flying after flocking]
The raising of the hair after planting was evaluated in the following three stages.
○: The hair bundle shape projected in the direction of the hair axis at the tip of the hair bundle that has been flocked can be recognized as being substantially similar to the shape of the flock hole, and the axial direction of the hair is almost aligned.
(Triangle | delta): Although the axial direction of the hair is inclined in the direction substantially orthogonal to the flock hole shape circumferential direction, it can be recognized that the flock hole shape is substantially similar. Spread is less than 1.2 times the flock hole size.
X: The axial direction of the hair is greatly inclined in a direction substantially perpendicular to the circumferential direction of the flock hole shape, and the spread exceeds 1.2 times the flock hole size, or the flock hole shape cannot be recognized.

〔樹脂漏れ〕
射出成形後における樹脂漏れを下記三段階で評価した。
○:後充填された樹脂が、植毛基部より植毛面側に突出していない。
△:後充填された樹脂が、植毛面側への突出が0.5mm以下であり、一部の用毛束にのみ確認される。
×:後充填された樹脂が、植毛面側への突出が0.5mmを超える、または用毛束全体にわったて突出が確認される。
[Resin leakage]
The resin leakage after injection molding was evaluated in the following three stages.
○: The post-filled resin does not protrude toward the flocked surface from the flocked base.
(Triangle | delta): The protrusion to the flocked surface side is 0.5 mm or less, and the resin with which the back filling was carried out is confirmed only to some hair bundles.
X: The post-filled resin has a protrusion to the flocked surface side of more than 0.5 mm, or a protruding protrusion across the entire hair bundle is confirmed.

〔植毛ミス〕
植毛ミスを下記三段階で評価した。
○:植毛装置で連続的に植毛できる。
△:植毛装置で連続的に植毛できるが、植毛基部への挿入量が不十分なものが発生する、または植毛基部周辺に用毛が脱落する。
×:用毛束を基部に挿入できない、または植毛基部周辺に用毛が脱落し、植毛装置で連続的に植毛できない。
[Flocking mistake]
The flocking error was evaluated in the following three stages.
○: The hair can be planted continuously with a hair transplanting device.
(Triangle | delta): Although hair can be planted continuously with a hair transplantation apparatus, the thing in which the insertion amount to a hair transplant base part is inadequate generate | occur | produces, or a hair for fallen around a hair transplant base part.
X: The hair bundle cannot be inserted into the base, or the hair falls off around the base of the hair transplantation, and the hair transplantation device cannot continuously plant the hair.

〔用毛先端整列性〕
植毛後における用毛の先端の整列性を下記三段階で評価した。
○:所定の整列形態が形成されている。
△:所定の整列形態が形成されているが、修正を要する用毛の飛び出しが見うけられる。
×:整列形態に一部欠損がある。
[For hair tip alignment]
The alignment of the tips of the hair after flocking was evaluated in the following three stages.
◯: A predetermined alignment form is formed.
(Triangle | delta): Although the predetermined alignment form is formed, the protrusion of the hair which needs correction can be seen.
X: The alignment form has a partial defect.

〔比較例1〜12〕
前記面積比(As/Ai)、スリーブ内用毛密度及び植毛孔内用毛密度を本発明の範囲外となるようにした以外は、実施例と同様にして植毛を行った。
[Comparative Examples 1 to 12]
Flocking was carried out in the same manner as in Example except that the area ratio (As / Ai), the hair density in the sleeve, and the hair density in the flock hole were out of the scope of the present invention.

Figure 2009101186
Figure 2009101186

表1に示すように、前記面積比(As/Ai)、スリーブ内用毛密度及び植毛密度が本発明の範囲内にある実施例の歯ブラシは、比較例の歯ブラシに比べ、用毛束の配向性に優れ、用毛がきれいに整列していることが確認された。   As shown in Table 1, the toothbrush of the example in which the area ratio (As / Ai), the bristle density in the sleeve, and the flocking density are within the scope of the present invention is the orientation of the bristle bundle compared to the toothbrush of the comparative example. It was confirmed that the hair was excellent and the hairs were neatly aligned.

1 用毛の分離移送装置
2 スリーブ
3 移送手段
4 支持手段
6 用毛の送出手段
60 押出ピン
DESCRIPTION OF SYMBOLS 1 Hair separation | transfer apparatus 2 Sleeve 3 Transfer means 4 Support means 6 Feed means 60 for hair 60 Extrusion pin

Claims (1)

所定長さに切断された用毛をスリーブの導入孔内に導入した後に、導入された前記用毛を、前記スリーブの前記導入孔内から送出して植毛基部の植毛孔を介して、用毛束保持具の用毛束挿入孔内に挿入する工程を具備するブラシの製造方法であって、
前記用毛束保持具は、前記植毛基部を備えたブラシ本体を固定するものであり、
前記スリーブ内からの前記用毛の送出には、前記スリーブ内に挿入可能な押出ピンが用いられ、
前記押出ピンは、その先端部から所定長さの部分(L4)が、前記スリーブの導入孔における直線部分の長さ方向に直交する断面に対応する断面形態を有し、該押出ピンの前記先端部が、前記用毛束挿入孔の先端の形態に対応するように形成され、
前記用毛束挿入孔の孔径は、前記ブラシ本体の前記植毛孔の孔径よりも大きく設定されており、
前記スリーブにおける前記導入孔の軸方向に直交する断面積Asと前記植毛孔の軸方向に直交する断面積Aiとの比(As/Ai)が1.02〜1.3であり、且つ該スリーブ内に47〜75%の用毛密度で該用毛を導入した後に、導入された該用毛を該スリーブ内から送出して前記植毛孔内に60〜80%の用毛密度で挿入するブラシの製造方法。
After the bristle cut to a predetermined length is introduced into the introduction hole of the sleeve, the introduced bristle is delivered from the introduction hole of the sleeve and is then passed through the flocking hole of the flocking base. A method for manufacturing a brush comprising a step of inserting into a hair bundle insertion hole for a bundle holder,
The hair bundle holder is for fixing a brush body provided with the flocked base,
For delivery of the hair from within the sleeve, an extrusion pin that can be inserted into the sleeve is used,
The extrusion pin has a cross-sectional shape in which a portion (L4) having a predetermined length from the tip portion thereof corresponds to a cross section perpendicular to the length direction of the straight portion in the introduction hole of the sleeve, and the tip of the extrusion pin The part is formed so as to correspond to the shape of the tip of the hair bundle insertion hole,
The diameter of the bristle bundle insertion hole is set larger than the diameter of the flock hole of the brush body,
The ratio (As / Ai) of the cross-sectional area As orthogonal to the axial direction of the introduction hole in the sleeve to the cross-sectional area Ai orthogonal to the axial direction of the flock hole is 1.02 to 1.3, and the sleeve A brush which introduces the hair with a hair density of 47 to 75% into the hair, and then sends the introduced hair from the sleeve and inserts the hair into the flock hole with a hair density of 60 to 80%. Manufacturing method.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61280805A (en) * 1985-06-06 1986-12-11 株式会社資生堂 Production of hair bundle
JPH07194433A (en) * 1993-09-07 1995-08-01 Anton Zahoransky Gmbh & Co Method and machine for producing brush
JPH09182632A (en) * 1995-12-28 1997-07-15 Lion Corp Manufacture of brush and its device
JP2000060643A (en) * 1998-08-26 2000-02-29 Lion Corp Manufacture of toothbrush
JP3226276B2 (en) * 1992-04-28 2001-11-05 ヘー・ベー・ブヒェリー・エヌ・ヴェー Toothbrush manufacturing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61280805A (en) * 1985-06-06 1986-12-11 株式会社資生堂 Production of hair bundle
JP3226276B2 (en) * 1992-04-28 2001-11-05 ヘー・ベー・ブヒェリー・エヌ・ヴェー Toothbrush manufacturing method
JPH07194433A (en) * 1993-09-07 1995-08-01 Anton Zahoransky Gmbh & Co Method and machine for producing brush
JPH09182632A (en) * 1995-12-28 1997-07-15 Lion Corp Manufacture of brush and its device
JP2000060643A (en) * 1998-08-26 2000-02-29 Lion Corp Manufacture of toothbrush

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