JP2021122444A - toothbrush - Google Patents
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- JP2021122444A JP2021122444A JP2020017271A JP2020017271A JP2021122444A JP 2021122444 A JP2021122444 A JP 2021122444A JP 2020017271 A JP2020017271 A JP 2020017271A JP 2020017271 A JP2020017271 A JP 2020017271A JP 2021122444 A JP2021122444 A JP 2021122444A
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- 210000004209 hair Anatomy 0.000 claims description 103
- 238000011156 evaluation Methods 0.000 claims description 32
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 238000012790 confirmation Methods 0.000 claims description 12
- 230000001680 brushing effect Effects 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 4
- 238000004299 exfoliation Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 241000904500 Oxyspora paniculata Species 0.000 abstract 2
- 208000002064 Dental Plaque Diseases 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 32
- 238000004140 cleaning Methods 0.000 description 14
- 238000012360 testing method Methods 0.000 description 7
- 210000000214 mouth Anatomy 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 210000004195 gingiva Anatomy 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 210000003780 hair follicle Anatomy 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
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Abstract
Description
本発明は、口腔内の清掃用具である歯ブラシにおいて、最も必要な機能である歯垢除去効果を高めた歯ブラシに関する。 The present invention relates to a toothbrush that is a cleaning tool for the oral cavity and has an enhanced plaque removing effect, which is the most necessary function.
歯ブラシによるブラッシングによって、歯の清掃を効果的に行うには、口腔内の歯間部や歯頸部、或いは咬合面の凸凹形状に合わせて、狭い間隙部だけでなく平滑な歯面に対して刷毛先端部ができるだけ垂直に当たるように到達させて歯垢を掻き出すことと同時に、口腔内を傷つけないことが重要である。 In order to effectively clean the teeth by brushing with a toothbrush, not only the narrow gaps but also the smooth tooth surface should be adjusted according to the uneven shape of the interdental part, the cervical part, or the occlusal surface in the oral cavity. It is important to reach the tip of the brush so that it hits as vertically as possible to scrape out the plaque, and at the same time, not to damage the oral cavity.
従来より、そのようなブラッシングを可能にすることを目的として色々な毛束を種々配置させた形態の歯ブラシが提案されている。 Conventionally, a toothbrush in a form in which various hair bundles are arranged in various ways has been proposed for the purpose of enabling such brushing.
例えば、近年の口腔衛生志向の高まりにより、歯ブラシの歯垢除去効果を向上させるためだけでなく、良好なフィット感と柔らかい当たり心地とを両立させるため、毛束先端部に達する正用毛と、その植毛面から９０％以下の長さの副用毛とを無作為に混在させた段差植毛歯ブラシが提案されている（例えば、特許文献１参照）。 For example, due to the growing tendency toward oral hygiene in recent years, not only to improve the plaque removing effect of toothbrushes, but also to achieve both a good fit and a soft touch, regular hair that reaches the tip of the hair bundle and regular hair A stepped flocked toothbrush in which secondary bristles having a length of 90% or less from the flocked surface are randomly mixed has been proposed (see, for example, Patent Document 1).
また、毛束の長さの最長と最短の差が１〜４ｍｍの範囲内にあり、該範囲内で長さが不揃いで太さの異なる2種類の用毛が植立された段差植毛歯ブラシが提案されている（例えば、特許文献２参照）。 In addition, the difference between the longest and shortest hair bundle length is within the range of 1 to 4 mm, and within this range, a stepped flocked toothbrush in which two types of bristles with irregular lengths and different thicknesses are planted. It has been proposed (see, for example, Patent Document 2).
あるいは、口腔内の複数部位の各々に適した清掃機能を持たせるために、任意の高さの用毛からなる第一毛束部と、第一毛束部の高さより低い第二毛束部とからなる段差状毛束を複数有し、異なる起伏形状の第一清掃面と第二清掃面を有する段差植毛歯ブラシが提案されている（例えば、特許文献３参照）。 Alternatively, in order to provide a cleaning function suitable for each of a plurality of parts in the oral cavity, a first hair bundle portion composed of hairs of an arbitrary height and a second hair bundle portion lower than the height of the first hair bundle portion. A stepped flocked toothbrush having a plurality of stepped bristles composed of the above and having a first cleaning surface and a second cleaning surface having different undulating shapes has been proposed (see, for example, Patent Document 3).
ところで、歯ブラシには目的に応じて色々な毛束が植毛され歯垢除去力の向上がなされてきている。歯ブラシで歯垢を落とす際、毛先を使うことが最も効果的であると言われている。一番歯垢が取れるのは、毛の断面が歯垢に直接的に真っ直ぐ当たり、毛の弾力を使って掻きとっている時であり、逆に歯垢が捉えられていないと歯垢除去効果は薄くなる。一般的に毛先が開いたら歯ブラシの取替時と言われるのは、毛が開くと毛が曲がっている状態であり直線的に歯垢を捉えにくい状態になっているからである。 By the way, various hair bundles are transplanted to the toothbrush according to the purpose, and the plaque removing power has been improved. It is said that using the tips of the bristles is the most effective way to remove plaque with a toothbrush. The best plaque can be removed when the cross section of the hair hits the plaque directly and is scraped using the elasticity of the hair, and conversely, if the plaque is not caught, the plaque removal effect Becomes thinner. Generally, it is said that when the tip of the bristles is open, it is time to replace the toothbrush because when the bristles are open, the bristles are bent and it is difficult to catch plaque linearly.
上記従来の各歯ブラシは、色々な形で段差植毛にすることで、複雑な形状の歯面や歯間部への毛先の当たりをよくするようにしており、歯肉への当たり心地や清掃性の良化を被験者自身の実感として優れた官能評価が得られている。しかしながら、実際の汚れ除去効果については、感覚だけの官能評価とは異なり、充分な結果が得られないとの不都合を生じていた。 Each of the above-mentioned conventional toothbrushes has various shapes of stepped bristles to improve the contact of the tips of the bristles on the tooth surface and the interdental part of complicated shapes, and the comfort and cleanability of the gingiva. An excellent sensory evaluation has been obtained as the subject's own feeling of improvement. However, the actual stain removing effect is different from the sensory evaluation only by the senses, and there is an inconvenience that sufficient results cannot be obtained.
そこで本発明は、段差植毛の利点を利用しながら、同時に毛先が効率よく細部に届きやすく、歯面の凸凹や歯牙と歯肉の間の段差などにもフィットし歯垢を除去することができる歯ブラシを提供することを目的とする。 Therefore, the present invention can remove plaque by utilizing the advantage of stepped flocking, at the same time, the tips of the bristles can easily reach the details efficiently, and the plaque can be fitted to the unevenness of the tooth surface and the step between the tooth and the gingiva. The purpose is to provide a toothbrush.
本発明者らが鋭意検討した結果、段差３ｍｍ以内に植毛した毛先を無作為に混在させ、先丸加工された用毛の歯ブラシであれば、歯肉を傷つけることなく心地よい当たり具合で、凸凹な面の汚れも落とせることを見出し本発明に至った。 As a result of diligent studies by the present inventors, a toothbrush with bristles that have been randomly mixed with bristles planted within a step of 3 mm and have a rounded tip is a toothbrush that does not damage the gums and is comfortable and uneven. We have found that it is possible to remove stains on the surface, and have arrived at the present invention.
即ち、本発明の歯ブラシは、複数の用毛を束ねた毛束が植毛面に複数植毛された歯ブラシにおいて、最短部の用毛の長さは、毛束最外郭に相当する最長部の用毛の先端部によって形成される最長部用毛先端面よりも３ｍｍ短い長さに設定され、これら用毛は、最短部の長さから最長部の長さまでの範囲で無作為の長さで混在され、これら用毛の毛先は、先丸加工されてなることを特徴とする。 That is, the toothbrush of the present invention is a toothbrush in which a plurality of bristles bundled with a plurality of bristles are transplanted on the flocked surface, and the length of the shortest bristles corresponds to the outermost bristles of the bristles. The length is set to be 3 mm shorter than the longest hair tip surface formed by the tip of the hair, and these hairs are mixed at random lengths ranging from the shortest length to the longest length. The tips of these hairs are characterized by being rounded.
上記歯ブラシは、６ミルまたは７ミルの用毛を用いるものであってもよい。 The toothbrush may use 6 mils or 7 mils of bristles.
上記歯ブラシは、６ミルまたは７ミルの用毛を用いて構成された歯ブラシであって、下底面が０．６ｍｍ×０．６ｍｍ、上底面が０．４ｍｍ×０．４ｍｍ、高さが０．１ｍｍとなされた四角錐台の下底面間が、０．１６ｍｍのピッチで行列方向に配列されてなるポリプロピレン製の白色の凹凸を有する評価板の表面に、凹部に充填され、凸部の表面を被覆するように噛合確認用指標剤を０．００３±０．０００５ｇ／ｍ２の量となるように塗布して着色し、その表面に５ｇｆの接触荷重で歯ブラシの毛先端面を接触させて、４回往復するように刷掃運動させて当該噛合確認用指標剤を剥離した後、刷掃面を下記の条件で撮影して画像処理した際、刷掃面における噛合確認用指標剤が剥離されて評価板の白色が露呈した面積を、４０％以上認識することができるものであってもよい。
（ただし、撮影条件は、拡大鏡：Hirox Digital Microscope KH-8700、レンズ：MX(G)‐2016Z：Low X6、H視野：48.70ｍｍ、光源：LED照明、明るさ：Half Light、にて６倍拡大で撮影、画像処理条件は、画像処理ソフト：Ｉｍａｇｅ Ｊにて、Threshold Color：RED：116, 255 Pass(checked)、Green：132, 255 Pass (checked)、Blue：120, 255 Pass (checked)、Thresholding method (Default)、Threshold Color (Black)、Color Space (RGB)、Dark Background (checked)にて解析）
The toothbrush is a toothbrush constructed by using 6 mil or 7 mil bristles, and has a lower bottom surface of 0.6 mm × 0.6 mm, an upper bottom surface of 0.4 mm × 0.4 mm, and a height of 0. The space between the lower and lower surfaces of the quadrangular pyramid, which is 1 mm, is filled in the concave portion on the surface of the evaluation plate made of polypropylene having white irregularities arranged in the matrix direction at a pitch of 0.16 mm, and the surface of the convex portion is formed. An index agent for confirming meshing is applied so as to cover the surface in an amount of 0.003 ± 0.0005 g / m 2 , and the surface is brought into contact with the tip surface of the toothbrush with a contact load of 5 gf. After the meshing confirmation indexing agent is peeled off by performing a sweeping motion so as to reciprocate four times, when the wiped surface is photographed under the following conditions and image processing is performed, the meshing confirmation indexing agent on the wiped surface is peeled off. The area where the white color of the evaluation plate is exposed may be recognized by 40% or more.
(However, the shooting conditions are: magnifying glass: Hirox Digital Microscope KH-8700, lens: MX (G) -2016Z: Low X6, H field of view: 48.70 mm, light source: LED lighting, brightness: Half Light, 6x Image processing software: Image J, Threshold Color: RED: 116, 255 Pass (checked), Green: 132, 255 Pass (checked), Blue: 120, 255 Pass (checked) , Thresholding method (Default), Threshold Color (Black), Color Space (RGB), Dark Background (checked))
上記歯ブラシは、６ミルまたは７ミルの用毛によって構成された歯ブラシであって、下底面が０．６ｍｍ×０．６ｍｍ、上底面が０．４ｍｍ×０．４ｍｍ、高さが０．１ｍｍとなされた四角錐台の下底面間が、０．１６ｍｍのピッチで行列方向に配列されてなるポリプロピレン製の白色の凹凸を有する評価板の表面に、凹部に充填され、凸部の表面を被覆するように噛合確認用指標剤を０．００３±０．０００５ｇ／ｍ２の量となるように塗布して着色し、その表面に５ｇｆの接触荷重で歯ブラシの毛先端面を接触させて、１回往復するように刷掃運動させて当該噛合確認用指標剤を剥離した後、刷掃面を下記の条件で撮影して画像処理した際、刷掃面における噛合確認用指標剤が剥離されて評価板の白色が露呈した面積は、用毛の長さが均一で先丸加工された歯ブラシで同じ操作を行った場合の面積の３．５倍以上認識することができるものであってもよい。
（ただし、撮影条件は、拡大鏡：Hirox Digital Microscope KH-8700、レンズ：MX(G)‐2016Z：Low X6、H視野：48.70ｍｍ、光源：LED照明、明るさ：Half Light、にて６倍拡大で撮影、画像処理条件は、画像処理ソフト：Ｉｍａｇｅ Ｊにて、Threshold Color：RED：116, 255 Pass(checked)、Green：132, 255 Pass (checked)、Blue：120, 255 Pass (checked)、Thresholding method (Default)、Threshold Color (Black)、Color Space (RGB)、Dark Background (checked)にて解析）
The toothbrush is a toothbrush composed of 6 mils or 7 mils of bristles, and has a lower bottom surface of 0.6 mm × 0.6 mm, an upper bottom surface of 0.4 mm × 0.4 mm, and a height of 0.1 mm. The space between the lower and lower surfaces of the quadrangular pyramid is filled in the concave portion on the surface of the evaluation plate made of polypropylene having white irregularities arranged in the matrix direction at a pitch of 0.16 mm to cover the surface of the convex portion. As described above, an index agent for confirming meshing is applied in an amount of 0.003 ± 0.0005 g / m 2 to color the surface, and the tip surface of the toothbrush is brought into contact with the surface with a contact load of 5 gf once. After the meshing confirmation index agent is peeled off by performing a reciprocating sweeping motion, when the wiped surface is photographed under the following conditions and image processing is performed, the meshing confirmation index agent on the wiped surface is peeled off and evaluated. The area where the white color of the plate is exposed may be 3.5 times or more the area when the same operation is performed with a toothbrush having uniform bristles and a rounded tip.
(However, the shooting conditions are: magnifying glass: Hirox Digital Microscope KH-8700, lens: MX (G) -2016Z: Low X6, H field of view: 48.70 mm, light source: LED lighting, brightness: Half Light, 6x Image processing software: Image J, Threshold Color: RED: 116, 255 Pass (checked), Green: 132, 255 Pass (checked), Blue: 120, 255 Pass (checked) , Thresholding method (Default), Threshold Color (Black), Color Space (RGB), Dark Background (checked))
上記歯ブラシにおいて、各用毛の先端部は、用毛半径の４０〜１００％に相当する曲率半径で、端部周縁が面取りされて先丸加工されたものであってもよい。 In the above toothbrush, the tip of each bristles may have a radius of curvature corresponding to 40 to 100% of the bristles radius, and the peripheral edge of the end may be chamfered and rounded.
以上述べたように、本発明の歯ブラシによれば、最長部用毛先端面が歯の表面を面で捉えた時、その面の段差が３ｍｍの範囲内に無作為に毛束の用毛先端部が混在し、かつ、各用毛の毛先が先丸処理されていることで、柔らかい当たり心地でありながら、接触した歯の表面の凸凹面の清掃を効果的に行うことができる。 As described above, according to the toothbrush of the present invention, when the hair tip surface of the longest part captures the surface of the tooth as a surface, the step of the surface is within a range of 3 mm and the hair tip of the hair bundle is randomly selected. Since the portions are mixed and the tips of the hairs are rounded, it is possible to effectively clean the uneven surface of the contacted tooth surface while having a soft touch feeling.
本発明の実施形態に係る歯ブラシについて、以下の図１ないし図９を参照して説明する。 The toothbrush according to the embodiment of the present invention will be described with reference to FIGS. 1 to 9 below.
図１は本実施形態の歯ブラシ１の植毛面から見た平面図、図２は同II−II線断面図、図３は同歯ブラシ１の斜視図である。
FIG. 1 is a plan view of the
すなわち、歯ブラシ１は、ヘッド部２１とヘッド部２１から延びるハンドル部２２とを備えたハンドル本体２の前記ヘッド部２１の植毛面１０に円柱状の毛束３が複数植毛されているものである。
That is, in the
ヘッド部２１及びハンドル部２２を備えたハンドル本体２を構成する素材は、歯ブラシ１に求められる剛性や機械的な特性から決まり、例えば高硬度樹脂単体、或いはエラストマー等の柔軟な樹脂で被覆されていてもよい。
The material constituting the
高硬度樹脂としては、例えばポリプロピレン（ＰＰ）、ポリエチレンテレフタレート（ＰＥＴ）、ポリスチレン（ＰＳ）、アクリロニトリル・ブタジエン・スチレン樹脂（ＡＢＳ）、アクリロニトリル・スチレン共重合樹脂（ＡＳ）などを挙げることができ、１種類或いは２種類以上を適宜組み合わせても良い。 Examples of the high hardness resin include polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), acrylonitrile / butadiene / styrene resin (ABS), acrylonitrile / styrene copolymer resin (AS), and the like. The type or two or more types may be combined as appropriate.
ヘッド部２１の大きさは、口腔内での操作性から導き出すことができ、幅は８〜１５ｍｍ、長さは１５〜３５ｍｍ、植毛部の厚さは３〜５ｍｍ程度が良い。
The size of the
毛束３は、複数の用毛を束ねてヘッド部２１の植毛面１０に植毛されてなるもので、毛束３の太さは特に限定されないが、１．０〜２．０ｍｍが好ましい。２ｍｍを超えるものでは毛束密度が上がることで、無作為な高さに植毛された用毛の動きが制限され用毛の自由度が小さくなるので、柔らかい当たりが得られにくくなる。
The
用毛の材質は、植毛前に先丸加工できるものであれば特に制限されない。例えば機械的な研磨で用毛を研磨して先丸加工する場合は、ポリアミド系の６−１２ナイロンや６−１０ナイロンが扱い易い。化学的な処理によって用毛の先を溶かして先丸加工する場合は、代表的なものとしてはポリブチレンテレフタレート（ＰＢＴ）を使用することができる。 The material of the hair is not particularly limited as long as it can be rounded before flocking. For example, when the hair is polished by mechanical polishing and the tip is rounded, polyamide-based 6-12 nylon or 6-10 nylon is easy to handle. When the tip of the hair is melted by a chemical treatment and the tip is rounded, polybutylene terephthalate (PBT) can be used as a typical example.
なお、用毛の先丸加工は、先端部が完全な半球、すなわち、図４（ａ）に示すように、先端の端部周縁が用毛の半径の１００％に相当する曲率半径で面取りされて半球状に形成されたものであってもよいし、当該先端の端部周縁が図４（ｂ）に示すように、用毛の半径の４０％に相当する曲率半径で面取りされたものであってもよいし、これら１００％〜４０％の間の任意の曲率半径で面取りされたものであってもよい。 In the rounded tip of the hair, the tip is a perfect hemisphere, that is, as shown in FIG. 4A, the peripheral edge of the tip is chamfered with a radius of curvature corresponding to 100% of the radius of the hair. It may be formed in a hemispherical shape, or the peripheral edge of the end of the tip is chamfered with a radius of curvature corresponding to 40% of the radius of the hair, as shown in FIG. 4 (b). It may be, or it may be chamfered with an arbitrary radius of curvature between 100% and 40%.
用毛の太さは断面形状の場合、５〜９ミルが好ましく、６〜７ミルが特に好ましい。５ミルより細い場合、毛腰が弱いため毛の当たり心地は良いが毛が歯面に垂直に立ち難くなる。９ミルより太い場合、毛腰が強く歯面や歯肉に垂直に当たる毛が多くなることから、当たり心地に痛い感覚が残るため歯ブラシとしては使いにくくなる。 In the case of a cross-sectional shape, the thickness of the hair is preferably 5 to 9 mils, particularly preferably 6 to 7 mils. If it is thinner than 5 mils, the hair is weak and comfortable to touch, but it becomes difficult for the hair to stand perpendicular to the tooth surface. If it is thicker than 9 mils, it will be difficult to use as a toothbrush because the hair will be strong and the number of hairs that hit the tooth surface and gums will increase, leaving a painful sensation.
植毛された歯ブラシ１における、ヘッド部２１の植毛面１０から最長部用毛先端部までの高さは、口腔内での操作性から導き出すことができ、１０〜１５ｍｍが適切である。１０ｍｍより短いと、毛腰が強く歯面や歯肉に垂直に当たる毛が多くなることから、当たり心地に痛い感覚が残るため歯ブラシとしては使いにくくなる。１５ｍｍより長いと、毛腰が弱いため毛の当たり心地は良いが毛が歯面に垂直に立ち難くなる。
The height of the flocked
本実施形態の歯ブラシ１の製造方法について例を挙げて説明すると、まずハンドル本体２を成形した後、当該ハンドル本体２のヘッド部２１の植毛面１０に所定の長さの毛束３を植毛する。毛束３を植毛する方法としては、特に限定されるものではなく、例えば、毛束３を二つ折りにしてその間に挟み込まれた平線を植毛穴に打ち込むことにより毛束３を植える平線式植毛によって行うことができる。この際、植毛機では、所定本数の用毛がピッカーによって刈り取られ、毛束３として植毛されるが、その間に微妙に用毛が動くことから無作為の段差が自然発生するので、植毛機に用毛をセットする際、段差を生じない設定で、用毛を設定しておけば、微妙に生じたズレで、植毛後には、所望の植毛状態、すなわち、最短部の用毛の長さが、毛束最外郭に相当する最長部の用毛の先端部によって形成される最長部用毛先端面よりも３ｍｍ短い長さに設定されて、最短部の長さから最長部の長さまでの範囲で無作為の長さで用毛が混在するように、植毛されることとなる。これにより、植毛後の先丸加工を行うことなく、予め先丸加工した用毛を使用して効率の良い歯ブラシ１の製造が行える。
To explain the manufacturing method of the
このようにして構成された歯ブラシ１は、最長部用毛先端面が歯の表面を面で捉えた時、その面から３ｍｍの範囲内に、無作為に毛束の用毛先端部が混在し、かつ、各用毛の毛先が先丸処理されていることで、柔らかい当たり心地でありながら、接触した歯の表面の凸凹面の清掃を効果的に行うことができることとなる。
In the
次に、この歯ブラシによる汚れの除去効率を確認するために行った実施例を示す。 Next, an example carried out to confirm the dirt removal efficiency by this toothbrush will be shown.
（実施例１、２）
図５に示すように、３２ｍｍ×１２．９ｍｍのヘッド部に、６１個の植毛穴を設けて植毛面を形成した。植毛穴は１．２ｍｍ、植毛穴同士の間隔は０．９ｍｍとした。ここに長さ２５ｍｍの用毛を毛束にして、二つ折りにして０．２５〜０．３ｍｍの厚みの平線を用いて平線式植毛機で植毛した。用毛の直径は６ミル（実施例１）、７ミル（実施例２）のそれぞれを用い、各用毛は、先端部となる各用毛の両端部を予め先丸加工したものを使用した。この先丸加工は、両端部周縁が、用毛の半径の８０％の曲率半径となるように先丸加工することによって得られた。図６に示すように、植毛過程では、毛束を構成する各用毛が微妙なズレを生じ、最短部の用毛の長さが最長部用毛先端部よりも３ｍｍ短い長さに設定されて、最短部の長さから最長部の長さまでの範囲で無作為の長さで用毛が混在する状態の歯ブラシが得られた。なお、６ミルの用毛は一つの植毛穴に２０本の用毛を二つ折りにして４０本を植毛、７ミルの用毛は一つの植毛穴に１５本の用毛を二つ折りにして３０本を植毛して歯ブラシを構成した。
(Examples 1 and 2)
As shown in FIG. 5, 61 flocked holes were provided in a head portion of 32 mm × 12.9 mm to form a flocked surface. The hair follicles were 1.2 mm, and the distance between the follicles was 0.9 mm. Here, 25 mm long hair was made into a hair bundle, folded in half, and transplanted with a flat wire type hair transplanter using a flat wire having a thickness of 0.25 to 0.3 mm. The diameters of the hairs were 6 mils (Example 1) and 7 mils (Example 2), and the hairs used were those in which both ends of the hairs to be the tips were pre-rounded. .. This rounded tip was obtained by rounding the edges of both ends so that the radius of curvature was 80% of the radius of the hair. As shown in FIG. 6, in the hair transplantation process, each hair forming the hair bundle causes a slight deviation, and the length of the shortest hair is set to be 3 mm shorter than the length of the longest hair tip. Therefore, a toothbrush with a random length and a mixture of hairs was obtained in the range from the shortest length to the longest length. For 6 mil hair, 20 hairs are folded in half in one hair hole and 40 hairs are planted, and for 7 mil hair, 15 hairs are folded in half in one hair hole and 30 hairs are planted. A book was planted to form a toothbrush.
（比較例１、３）
両端を無加工のまま、３０ｍｍの長さに切り出した６ミル（比較例１）および７ミル（比較例３）の用毛を用い、それ以外は上記実施例１、２と同じ仕様の植毛を行って歯ブラシを構成した。得られた歯ブラシは、各用毛の全ての長さが、実施例１、２の歯ブラシの最外郭の用毛の長さと同じ用毛の長さとなるように、当該用毛を切り揃えた。その後、６ミル（比較例１）および７ミル（比較例３）の用毛を用いた歯ブラシは、研磨ヤスリにて各用毛の先丸加工を行い、用毛の端部周縁が、当該用毛の半径の５０％の曲率半径となるように先丸加工した。
その結果、比較例１、３は、実施例１、２との比較で、両端が先丸加工されている点は同じであるが、用毛の長さが同一に揃えられた点で実施例１、２とは異なる歯ブラシが得られた。
(Comparative Examples 1 and 3)
Using 6 mil (Comparative Example 1) and 7 mil (Comparative Example 3) hairs cut out to a length of 30 mm with both ends unprocessed, other than that, flocking with the same specifications as in Examples 1 and 2 above was performed. I went and constructed a toothbrush. In the obtained toothbrush, the bristles were trimmed so that the total length of each bristles was the same as the length of the outermost bristles of the toothbrushes of Examples 1 and 2. After that, the toothbrush using the bristles of 6 mils (Comparative Example 1) and 7 mils (Comparative Example 3) is subjected to rounding of the tips of each bristles with a polishing file, and the peripheral edge of the bristles is used for this purpose. The tip was rounded so as to have a radius of curvature of 50% of the radius of the hair.
As a result, Comparative Examples 1 and 3 are the same in comparison with Examples 1 and 2 in that both ends are rounded, but the lengths of the hairs are the same. Toothbrushes different from 1 and 2 were obtained.
（比較例２、４）
実施例１、２と同じ６ミルおよび７ミルの用毛を用い、最短部の用毛の長さが最長部用毛先端部よりも３ｍｍを超える長さぶん短く設定されて、最短部の長さから最長部の長さまでの範囲で無作為の長さで用毛が混在する状態の６ミル（比較例２）および７ミル（比較例４）の用毛の歯ブラシを構成した。
その結果、比較例２、４は、実施例１、２との比較で、先丸加工されている点は同じであるが、最短部の長さから最長部の長さまでが３ｍｍを超える範囲でばらついている点で実施例１、２とは異なる歯ブラシが得られた。
(Comparative Examples 2 and 4)
Using the same 6 mil and 7 mil hairs as in Examples 1 and 2, the length of the shortest hair is set to be more than 3 mm shorter than the tip of the longest hair, and the length of the shortest part is set. Toothbrushes of 6 mils (Comparative Example 2) and 7 mils (Comparative Example 4) in which hairs were mixed at random lengths ranging from the length to the longest part were constructed.
As a result, Comparative Examples 2 and 4 are the same in that the tip is rounded in comparison with Examples 1 and 2, but the length from the shortest portion to the length of the longest portion exceeds 3 mm. Toothbrushes different from Examples 1 and 2 were obtained in that they varied.
（評価方法）
＜汚れ落とし試験＞
評価板：汚れを付ける評価板として、表面に均一で微細な凸凹のある板（TAKAGIカッティングボードXS、材質ポリプロピレン、株式会社高儀）を使用した。この板の凸凹状態は、図７（ａ）に示すように、底辺の長さが約０．６ｍｍ、上辺の長さが約０．４ｍｍ、高さが０．１ｍｍの正四角錐台が、底面で約０．１６ｍｍのピッチ、上面で約０．３ｍｍのピッチで縦横に規則正しく並んでいる。
(Evaluation method)
<Dirt removal test>
Evaluation board: As an evaluation board to be soiled, a board with uniform and fine irregularities on the surface (TAKAGI cutting board XS, material polypropylene, Kogi Co., Ltd.) was used. As shown in FIG. 7A, the uneven state of this plate is such that a regular square frustum with a base length of about 0.6 mm, an upper side length of about 0.4 mm, and a height of 0.1 mm has a bottom surface. It is regularly arranged vertically and horizontally with a pitch of about 0.16 mm and a pitch of about 0.3 mm on the upper surface.
人工汚れ：スプレー式噛合確認用指標剤（商品名オクルード、製造パスカル、販売（株）モリタ）
試験用評価板：人工汚れを、上記評価板の凸凹表面に評価板の表面が 人工汚れの緑色で被覆した状態となるように、０．００３±０．０００５ｇ／ｍ２の噴霧量で噴霧して調製した。
Artificial stain: Spray-type meshing confirmation indicator (trade name: Occlude, manufacturing Pascal, sales Morita Co., Ltd.)
Test evaluation plate: Artificial stains are sprayed at a spray amount of 0.003 ± 0.0005 g / m 2 so that the surface of the evaluation plate is covered with the green color of the artificial stains on the uneven surface of the evaluation plate. Prepared.
歯ブラシの刷掃：図７（ａ）および（ｂ）に示すように、上記 試験用評価板の表面に、上記実施例１、２および比較例１−４の各歯ブラシの毛先を、５ｇｆの荷重で当接し、歯ブラシの長手方向に４回往復刷掃させた。刷掃距離は、長手方向に片道３５ｍｍ〜５０ｍｍとし、幅は歯ブラシのヘッド部の幅１２．９ｍｍから極力ずれないように刷掃運動させた。 Toothbrush wiping: As shown in FIGS. 7 (a) and 7 (b), the bristles of the toothbrushes of Examples 1 and 2 and Comparative Examples 1-4 are 5 gf on the surface of the test evaluation plate. The toothbrush was brought into contact with a load and swept back and forth four times in the longitudinal direction of the toothbrush. The sweeping distance was 35 mm to 50 mm one way in the longitudinal direction, and the width was swept so as not to deviate as much as possible from the width of the head portion of the toothbrush of 12.9 mm.
評価方法：試験用評価板は、この刷掃作業により緑色の人工汚れが掃除されるので、当該噛合確認用指標剤が除去されて評価板の白色が露呈する。この緑色から白色に変化した程度を確認することで、汚れの落ち具合を評価した。この評価方法については、刷掃前の試験用評価板の表面と、１回、２回、３回、４回の各往復刷掃後の試験用評価板の表面とを、それぞれ、下記の撮影条件で撮影し、この画像の汚れに相当する緑色の部分が、どれだけ白色に変化したのかを、画像処理ソフト（Ｉｍａｇｅ Ｊ）を用いて下記の解析条件で画像解析して確認した。なお、図７（ｃ）に示すように、撮影および画像解析する評価面Ａは、刷掃による縦横のブレを除き毛先と試験用評価板Ｂの接触が必ず起こっている刷掃面Ｃ（長さ２３．２ｍｍ×幅１１．６ｍｍ）から切り出した面とし、この評価面Ａにおいて人工汚れが除去された面積を測定し評価した。 Evaluation method: Since green artificial stains are cleaned from the test evaluation plate by this cleaning operation, the meshing confirmation index agent is removed and the white color of the evaluation plate is exposed. By confirming the degree of change from green to white, the degree of stain removal was evaluated. Regarding this evaluation method, the surface of the test evaluation plate before sweeping and the surface of the test evaluation plate after each reciprocating printing of once, twice, three times, and four times are photographed as follows. The image was taken under the conditions, and how much the green part corresponding to the stain of this image changed to white was confirmed by image analysis under the following analysis conditions using image processing software (Image J). As shown in FIG. 7 (c), the evaluation surface A to be photographed and image-analyzed is the cleaning surface C (where the bristles and the test evaluation plate B always come into contact with each other except for vertical and horizontal blurring due to printing). A surface cut out from (length 23.2 mm × width 11.6 mm) was used, and the area from which artificial stains were removed was measured and evaluated on the evaluation surface A.
結果を表１、表２、図８、図９、図１０に示す。 The results are shown in Table 1, Table 2, FIG. 8, FIG. 9, and FIG.
（撮影条件）
拡大鏡： Hirox Digital Microscope KH-8700
レンズ： MX(G)‐2016Z：Low X6
H視野： 48.70ｍｍ
光源： LED照明
明るさ： Half Light
(Shooting conditions)
Magnifier: Hirox Digital Microscope KH-8700
Lens: MX (G) -2016Z: Low X6
H field of view: 48.70 mm
Light source: LED lighting Brightness: Half Light
（画像解析条件）
Threshold Color
RED：116, 255 Pass(checked)
Green：132, 255 Pass (checked)
Blue：120, 255 Pass (checked)
Thresholding method (Default)
Threshold Color (Black)
Color Space (RGB)
Dark Background (checked)
(Image analysis conditions)
Threshold Color
RED: 116, 255 Pass (checked)
Green: 132, 255 Pass (checked)
Blue: 120, 255 Pass (checked)
Thresholding method (Default)
Threshold Color (Black)
Color Space (RGB)
Dark Background (checked)
＜評価結果＞
６ミルの歯ブラシ（実施例１、比較例１、２）、７ミルの歯ブラシ（実施例２、比較例３、４）ともに、刷掃回数が増加すると除去率が増加する同じ傾向を示している。
<Evaluation result>
Both the 6-mil toothbrush (Example 1, Comparative Examples 1 and 2) and the 7-mil toothbrush (Example 2, Comparative Examples 3 and 4) show the same tendency that the removal rate increases as the number of cleanings increases. ..
その中でも特に、実施例１および実施例２に係る歯ブラシは、比較例１〜４に係る他の歯ブラシよりも、人工的な汚れ除去が、評価板の正四角錐台上面だけでなく底面のピッチ部分まで落ちていることが判る。 Among them, in particular, the toothbrushes according to Examples 1 and 2 have more artificial stain removal than the other toothbrushes according to Comparative Examples 1 to 4, and the pitch portion of the bottom surface as well as the upper surface of the regular quadrangular frustum of the evaluation plate. You can see that it has fallen to.
実施例１、２と、比較例１〜４との差異をより細かく観察してみる。 Let us observe the differences between Examples 1 and 2 and Comparative Examples 1 and 4 in more detail.
実施例１および実施例２の歯ブラシと、比較例１および比較例３の歯ブラシとの差異は、無作為の3ｍｍ以内段差植毛されたもの（実施例１、２）と、植毛後に毛切り工程によって毛丈を揃えてられた後研磨工程で毛先を丸く加工したもの（比較例１、３）である。実施例１および実施例２の歯ブラシと、比較例１および比較例３の歯ブラシとでは、評価板の正四角錘台の底面ピッチ部分で顕著な差異が見て取れる。
すなわち、３ｍｍ以内の無作為な段差があることで、同じ太さで先丸加工された用毛であっても、凸凹面からの汚れ落ちに顕著な差異があることが判る。
The difference between the toothbrushes of Examples 1 and 2 and the toothbrushes of Comparative Example 1 and Comparative Example 3 was that the toothbrushes were randomly planted within 3 mm (Examples 1 and 2) and the hair was cut after the hair was transplanted. The hair tips are rounded in the polishing process after the hair lengths have been adjusted (Comparative Examples 1 and 3). A remarkable difference can be seen between the toothbrushes of Examples 1 and 2 and the toothbrushes of Comparative Example 1 and Comparative Example 3 in the bottom pitch portion of the regular square weight base of the evaluation plate.
That is, it can be seen that there is a remarkable difference in the removal of dirt from the uneven surface even if the bristles have the same thickness and are rounded, because there is a random step within 3 mm.
実施例１および実施例２の歯ブラシと、比較例２および比較例４の歯ブラシとの差異は、双方とも両端先丸加工であるが、実施例１、２は３ｍｍ以内の段差植毛、比較例２、４は３ｍｍを超える段差植毛である。３ｍｍを境にした段差植毛は歯ブラシの刷掃時に凸凹面に対して直角にあたる用毛の角度や本数が異なるため、３ｍｍ以内の方がより多くの汚れが取れていることが判る。 The difference between the toothbrushes of Examples 1 and 2 and the toothbrushes of Comparative Example 2 and Comparative Example 4 is that both ends are rounded, but Examples 1 and 2 have stepped flocking within 3 mm, and Comparative Example 2 4 is a stepped flocking exceeding 3 mm. It can be seen that more stains are removed within 3 mm because the angle and number of bristles that hit the uneven surface at right angles to the uneven surface are different for the stepped flocking with the boundary of 3 mm as the boundary.
歯ブラシによる刷掃運動の回数を重ねていけば、汚れが取れていくことは当然であるから、汚れの除去効率の悪い歯ブラシであっても、刷掃運動の回数を多くすると、そのうちに汚れが除去されていくこととなる。したがって、効率良く汚れを除去するといった意味では、少ない刷掃運動の回数、具体的には、４回以内の刷掃運動、好ましくは１回の刷掃運動であっても、本発明に係る実施例１および実施例２に係る歯ブラシは、従来の歯ブラシよりも顕著に汚れを除去できることが望ましい。図１０に示すように、実施例１の６ミルの歯ブラシの場合、比較例１の６ミルの歯ブラシと比較すると、１回の刷掃運動では、４．５倍以上の汚れを落とすことができ、刷掃運動を４回行っても、依然として２倍以上の汚れを落とすことができた。また、実施例２の７ミルの歯ブラシの場合、比較例２の７ミルの歯ブラシと比較すると、１回の刷掃運動では、３．５倍以上の汚れを落とすことができ、刷掃運動を４回行っても、依然として２．５倍以上の汚れを落とすことができた。 It is natural that stains will be removed by repeating the number of cleaning movements with the toothbrush, so even if the toothbrush has poor dirt removal efficiency, if the number of cleaning movements is increased, the stains will be removed over time. It will be removed. Therefore, in terms of efficiently removing stains, even if the number of cleaning movements is small, specifically, the number of cleaning movements is 4 or less, preferably 1 time, the practice according to the present invention is made. It is desirable that the toothbrushes according to Examples 1 and 2 can remove stains significantly more than conventional toothbrushes. As shown in FIG. 10, in the case of the 6-mil toothbrush of Example 1, compared with the 6-mil toothbrush of Comparative Example 1, one brushing motion can remove 4.5 times or more of dirt. Even after performing the brushing operation four times, it was still possible to remove more than twice as much dirt. Further, in the case of the 7 mil toothbrush of Example 2, as compared with the 7 mil toothbrush of Comparative Example 2, a single brushing motion can remove 3.5 times or more of dirt, and the brushing motion can be performed. Even after four times, I was still able to remove more than 2.5 times more dirt.
これら実施例１および実施例２と、比較例１ないし４との結果から、実施例１および実施例２の歯ブラシは、凸凹のある面についた汚れを他の比較例よりも効率的に除去できることが判った。 From the results of Examples 1 and 2 and Comparative Examples 1 to 4, the toothbrushes of Examples 1 and 2 can remove stains on uneven surfaces more efficiently than other Comparative Examples. I found out.
１ 歯ブラシ
１０ 植毛面
３ 毛束
1
Claims (4)
最短部の用毛の長さは、毛束最外郭に相当する最長部の用毛の先端部によって形成される最長部用毛先端面よりも３ｍｍ短い長さに設定され、これら用毛は、最短部の長さから最長部の長さまでの範囲で無作為の長さで混在され、これら用毛の毛先は、先丸加工されてなることを特徴とする歯ブラシ。 In a toothbrush in which multiple hair bundles of multiple hairs are transplanted on the flocked surface
The length of the shortest hair is set to be 3 mm shorter than the longest hair tip surface formed by the tip of the longest hair corresponding to the outermost outer shell of the hair bundle. A toothbrush that is randomly mixed in the range from the shortest part length to the longest part length, and the tips of these bristles are rounded.
下底面が０．６ｍｍ×０．６ｍｍ、上底面が０．４ｍｍ×０．４ｍｍ、高さが０．１ｍｍとなされた四角錐台の下底面間が、０．１６ｍｍのピッチで行列方向に配列されてなるポリプロピレン製の白色の凹凸を有する評価板の表面に、
凹部に充填され、凸部の表面を被覆するように噛合確認用指標剤を０．００３±０．０００５ｇ／ｍ２の量となるように塗布して着色し、
その表面に５ｇｆの接触荷重で歯ブラシの毛先端面を接触させて、４回往復するように刷掃運動させて当該噛合確認用指標剤を剥離した後、
刷掃面を下記の条件で撮影して画像処理した際、刷掃面における噛合確認用指標剤が剥離されて評価板の白色が露呈した面積を、４０％以上認識することができる歯ブラシ。
（ただし、撮影条件は、拡大鏡：Hirox Digital Microscope KH-8700、レンズ：MX(G)‐2016Z：Low X6、H視野：48.70ｍｍ、光源：LED照明、明るさ：Half Light、にて６倍拡大で撮影、画像処理条件は、画像処理ソフト：Ｉｍａｇｅ Ｊにて、Threshold Color：RED：116, 255 Pass(checked)、Green：132, 255 Pass (checked)、Blue：120, 255 Pass (checked)、Thresholding method (Default)、Threshold Color (Black)、Color Space (RGB)、Dark Background (checked)にて解析） The toothbrush according to claim 2.
The lower bottom surface is 0.6 mm x 0.6 mm, the upper bottom surface is 0.4 mm x 0.4 mm, and the height is 0.1 mm. On the surface of the evaluation plate with white irregularities made of polypropylene
The concave portion is filled, and the meshing confirmation index agent is applied so as to cover the surface of the convex portion in an amount of 0.003 ± 0.0005 g / m 2 and colored.
After the tip surface of the bristles of the toothbrush is brought into contact with the surface with a contact load of 5 gf and the brushing motion is performed so as to reciprocate four times to peel off the meshing confirmation index agent.
A toothbrush capable of recognizing 40% or more of the area where the white color of the evaluation plate is exposed due to peeling of the meshing confirmation index agent on the wiped surface when the wiped surface is photographed under the following conditions and image processed.
(However, the shooting conditions are: magnifying glass: Hirox Digital Microscope KH-8700, lens: MX (G) -2016Z: Low X6, H field of view: 48.70 mm, light source: LED lighting, brightness: Half Light, 6x Image processing software: Image J, Threshold Color: RED: 116, 255 Pass (checked), Green: 132, 255 Pass (checked), Blue: 120, 255 Pass (checked) , Thresholding method (Default), Threshold Color (Black), Color Space (RGB), Dark Background (checked))
下底面が０．６ｍｍ×０．６ｍｍ、上底面が０．４ｍｍ×０．４ｍｍ、高さが０．１ｍｍとなされた四角錐台の下底面間が、０．１６ｍｍのピッチで行列方向に配列されてなるポリプロピレン製の白色の凹凸を有する評価板の表面に、
凹部に充填され、凸部の表面を被覆するように噛合確認用指標剤を０．００３±０．０００５ｇ／ｍ２の量となるように塗布して着色し、
その表面に５ｇｆの接触荷重で歯ブラシの毛先端面を接触させて、１回往復するように刷掃運動させて当該噛合確認用指標剤を剥離した後、
刷掃面を下記の条件で撮影して画像処理した際、刷掃面における噛合確認用指標剤が剥離されて評価板の白色が露呈した面積は、
用毛の長さが均一で先丸加工された歯ブラシで同じ操作を行った場合の面積の３．５倍以上認識することができる歯ブラシ。
（ただし、撮影条件は、拡大鏡：Hirox Digital Microscope KH-8700、レンズ：MX(G)‐2016Z：Low X6、H視野：48.70ｍｍ、光源：LED照明、明るさ：Half Light、にて６倍拡大で撮影、画像処理条件は、画像処理ソフト：Ｉｍａｇｅ Ｊにて、Threshold Color：RED：116, 255 Pass(checked)、Green：132, 255 Pass (checked)、Blue：120, 255 Pass (checked)、Thresholding method (Default)、Threshold Color (Black)、Color Space (RGB)、Dark Background (checked)にて解析）
The toothbrush according to claim 2.
The lower bottom surface is 0.6 mm x 0.6 mm, the upper bottom surface is 0.4 mm x 0.4 mm, and the height is 0.1 mm. On the surface of the evaluation plate with white irregularities made of polypropylene
The concave portion is filled, and the meshing confirmation index agent is applied so as to cover the surface of the convex portion in an amount of 0.003 ± 0.0005 g / m 2 and colored.
After the tip surface of the bristles of the toothbrush is brought into contact with the surface with a contact load of 5 gf and the brushing motion is performed so as to reciprocate once to peel off the meshing confirmation index agent.
When the wiped surface was photographed under the following conditions and image processed, the area where the white color of the evaluation plate was exposed due to the exfoliation of the meshing confirmation index agent on the wiped surface was determined.
A toothbrush that can recognize 3.5 times or more of the area when the same operation is performed with a toothbrush with uniform bristles and a rounded tip.
(However, the shooting conditions are: magnifying glass: Hirox Digital Microscope KH-8700, lens: MX (G) -2016Z: Low X6, H field of view: 48.70 mm, light source: LED lighting, brightness: Half Light, 6x Image processing software: Image J, Threshold Color: RED: 116, 255 Pass (checked), Green: 132, 255 Pass (checked), Blue: 120, 255 Pass (checked) , Thresholding method (Default), Threshold Color (Black), Color Space (RGB), Dark Background (checked))
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