JP2012034762A - Method for producing brush handle incorporating print - Google Patents

Method for producing brush handle incorporating print Download PDF

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JP2012034762A
JP2012034762A JP2010176030A JP2010176030A JP2012034762A JP 2012034762 A JP2012034762 A JP 2012034762A JP 2010176030 A JP2010176030 A JP 2010176030A JP 2010176030 A JP2010176030 A JP 2010176030A JP 2012034762 A JP2012034762 A JP 2012034762A
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handle
mold
brush
divided
printing
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JP5411816B2 (en
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Keiji Matsunaga
圭司 松永
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Yamato Esulon Co Ltd
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Yamato Esulon Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a brush handle molded of a transparent thermoplastic resin incorporating printed matter thereinside, and allowing seeing-through of print from the outside.SOLUTION: Though a brush handle generally includes a bristling part and a handle part, the handle part is divided by a flat face perpendicular to a direction faced by bristling holes, an intermediate material comprising one of the divided handle parts and the bristling part is formed by injection molding of the transparent thermoplastic synthetic resin, next, the print is applied on a divided face, and thereafter the same thermoplastic resin is injection-molded on the divided face to be united.

Description

この発明は印刷を内蔵したブラシ柄の製造方法に関するものである。   The present invention relates to a method for manufacturing a brush handle with built-in printing.

ブラシ柄の表面に製造業者名、模様などを印刷することは、これまで行われて来た。しかし、表面に印刷しただけのものは、ブラシの使用中にすぐに剥がれてしまい印刷した効果が失われてしまう。
この欠点を改良するには、印刷したものをブラシ柄の中に埋め込むことが考えられる。ところが、ブラシ柄の中に印刷した物を埋め込むことはこれまでなされなかったし、またそのようなことは容易にできることではない。その理由は次のとおりである。
Printing a manufacturer name, a pattern, etc. on the surface of a brush pattern has been performed so far. However, what has just been printed on the surface peels off quickly while using the brush, and the printed effect is lost.
In order to improve this defect, it is conceivable to embed the printed material in the brush pattern. However, it has never been possible to embed printed matter in a brush pattern, and it is not easy to do so. The reason is as follows.

合成樹脂を材料としてブラシ柄を工業的に能率よく作るには、射出成形法によって作らざるを得ない。射出成形法では、ブラシ柄の形をした型窩のある成形型を用い、型窩内に溶融された合成樹脂を圧入し、成形型では型窩内に充填された溶融樹脂を専ら冷却し、冷却された成形体を取り出してブラシ柄が製造される。従って、ブラシ柄の柄部に印刷された物を埋め込むには、柄部を成形する型窩内に印刷物を宙吊りに固定しておいて、型窩内に溶融樹脂を圧入しなければならない。   To make a brush pattern industrially and efficiently using synthetic resin as a material, it must be made by injection molding. In the injection molding method, a mold with a brush-shaped mold cavity is used, a synthetic resin melted in the mold cavity is press-fitted, and in the mold, the molten resin filled in the mold cavity is exclusively cooled, The cooled molded body is taken out to produce a brush handle. Therefore, in order to embed the printed matter in the handle part of the brush pattern, the printed material must be suspended in the mold cavity for molding the handle part, and the molten resin must be pressed into the mold cavity.

他方、ドアミラーなどの製品のハウジング表面に意匠用のフィルム材を射出成形によって一体に作る方法が特開平11−34154号公報に記載されている。この方法は、射出成形型の一方の型にフィルム材を仮保持させるための仮保持機構を設けることとしている。   On the other hand, Japanese Patent Application Laid-Open No. 11-34154 describes a method of integrally forming a design film material on the surface of a housing of a product such as a door mirror by injection molding. In this method, a temporary holding mechanism for temporarily holding the film material is provided in one of the injection molds.

ところが、ブラシ柄の射出成形型では、このような仮保持機構を設けることができない。なぜならば、仮保持機構を設ければ、得られた成形品は仮保持機構のあった場所に必ず凹凸を生じることとなるが、ブラシ柄の柄部ではそのような凹凸があると見苦しくなるからである。そのほか、ブラシ柄の柄部を成形する型窩の壁面には凹凸がないので、印刷物を宙吊りにできるような構造にすることができない。その上に、柄部は溶融樹脂の圧入側に位置するために、溶融樹脂が高速で流れる関係上、印刷物を固定しても印刷物が流されてしまうことになり易い。   However, such a temporary holding mechanism cannot be provided in a brush pattern injection mold. This is because if a temporary holding mechanism is provided, the resulting molded product will always have irregularities in the place where the temporary holding mechanism was present, but it will be unsightly if there are such irregularities in the handle portion of the brush pattern. It is. In addition, since there is no unevenness on the wall surface of the mold cavity forming the handle portion of the brush pattern, it is impossible to make a structure that allows the printed matter to be suspended in the air. In addition, since the handle portion is located on the press-fusing side of the molten resin, the printed material is likely to flow even if the printed material is fixed because the molten resin flows at a high speed.

特開平11−34154号公報JP-A-11-34154

この発明は、上述の困難を解決しようとしてなされたものである。すなわち、この発明はブラシの柄を透明な熱可塑性樹脂で成形し、その中に印刷物を内蔵させて、外から印刷が透視できるようなブラシ柄を提供しようとするものである。   The present invention has been made to solve the above-mentioned difficulties. That is, the present invention aims to provide a brush pattern in which a brush handle is formed of a transparent thermoplastic resin, and a printed matter is built in the brush handle so that printing can be seen through from the outside.

この発明者は、上記の課題を解決するためには、ブラシ柄を二度に分けて成形する必要があると考えた。すなわち、ブラシ柄は植毛孔の穿設されている植毛部と、その余の柄の部分からなるものであるところ、この発明者は、柄部を植毛孔の向く方向に垂直な平面で2つに分割し、分割した柄部の1つと植毛部とからなる中間材をまず射出成形により成形し、柄部の分割面に印刷を付与し、その後に中間材の柄部上に柄部の残り半分を射出成形することを考えた。その際、中間材では柄部の分割面を柄部の端から植毛部に向けて平坦な面としておき、この平坦な分割面上に印刷を付与すると、その後分割面上に柄部の残り半分を射出成形したとき、印刷が流されたり変形したりするようなことが防がれることを見出した。この発明は、このような知見に基づいて完成されたものである。   This inventor thought that it was necessary to divide the brush pattern into two parts in order to solve the above problems. In other words, the brush handle is composed of a flocked portion in which the flocked hole is drilled and the remaining handle portion. This inventor has two patterns on a plane perpendicular to the direction of the flocked hole. The intermediate material consisting of one of the divided pattern parts and the flocked part is first formed by injection molding, and printing is applied to the split surface of the pattern part, and then the rest of the pattern part is placed on the pattern part of the intermediate material I thought about injection molding half. At that time, in the intermediate material, the split surface of the handle is made flat from the end of the handle toward the flocked portion, and when printing is applied on the flat split surface, the remaining half of the handle is then placed on the split surface. It has been found that printing is prevented from being washed away or deformed when injection molding is performed. The present invention has been completed based on such knowledge.

この発明は、植毛部と柄部とからなる所望形状のブラシ柄において、柄部を植毛孔の向く方向に垂直な平面によって2つに分割し、分割面を平坦な面とした形状の中間材を透明な熱可塑性合成樹脂の射出成形によって成形し、次いで分割面に印刷を施し、その後分割面上に上記と同じ熱可塑性合成樹脂を射出成形して、柄部の残り半分を成形して一体とすることを特徴とする、印刷を内蔵したブラシ柄の製造方法を提供するものである。   The present invention relates to a brush handle having a desired shape composed of a flocked portion and a handle portion, an intermediate material having a shape in which the handle portion is divided into two by a plane perpendicular to the direction of the flocked hole, and the divided surface is a flat surface Is molded by injection molding of a transparent thermoplastic synthetic resin, then printed on the divided surface, and then the same thermoplastic synthetic resin as above is injection molded on the divided surface, and the other half of the handle is molded and integrated The present invention provides a method for manufacturing a brush pattern with built-in printing.

この発明によれば、透明な熱可塑性合成樹脂を用いて、植毛部と柄部とを一体にしたブラシ柄を射出成形により成形するから、柄部の内部を透視できる美麗なブラシ柄を能率よく、安価に製造することができる。その際、柄部を植毛孔の向く方向に垂直な平面で2つに分割し、分割面に印刷を付与するので、印刷は植毛孔に垂直な平面に広がり、従って印刷は明瞭に目に映る。   According to this invention, since a brush pattern in which the flocked part and the handle part are integrated is formed by injection molding using a transparent thermoplastic synthetic resin, a beautiful brush pattern that can see through the inside of the handle part is efficiently obtained. Can be manufactured inexpensively. At that time, the handle is divided into two planes perpendicular to the direction of the flock holes, and printing is applied to the divided surface, so that the printing spreads on a plane perpendicular to the flock holes, and thus the printing is clearly visible. .

また、分割面を柄部の端から植毛部に向かって平坦な面としたから、この面に印刷を付与すると、この面に柄部の残り半分を射出成形するときに印刷が剥がれたり変形したりすることがなく、従って印刷をそのまま柄部内に埋没させることができる。しかも、あとで成形する柄部の残り半分は、中間材を作っている樹脂と同じ透明な熱可塑性樹脂で作ることとしたから、残り半分は中間材とよく融着し、従って分割面を感じさせない一体物が得られる。
また、印刷物は柄部内に埋没されているから、剥がれたり印刷が不鮮明となったりすることがない。この発明はこのような効果をもたらすものである。
In addition, since the split surface is a flat surface from the end of the handle portion toward the flocked portion, if printing is applied to this surface, the print is peeled off or deformed when the remaining half of the handle portion is injection-molded on this surface. Therefore, the printing can be buried in the pattern portion as it is. In addition, the remaining half of the pattern part to be molded later is made of the same transparent thermoplastic resin as the resin making the intermediate material, so the other half fuses well with the intermediate material and thus feels a split surface. A monolithic object that is not allowed to be obtained is obtained.
Further, since the printed matter is buried in the pattern portion, the printed matter is not peeled off or the printing is not blurred. The present invention provides such an effect.

この発明によって作られた印刷の透視できる歯ブラシ用柄の斜視図である。It is a perspective view of the toothbrush handle which can be seen through of the printing made by this invention. 図1に示した歯ブラシ用の柄を作るにあたって、射出成形によって作られた中間材の斜視図である。FIG. 2 is a perspective view of an intermediate material made by injection molding when making the toothbrush handle shown in FIG. 1. この発明において、分割面に印刷を付与するために用いられる熱転写用フィルムの説明図である。In this invention, it is explanatory drawing of the film for thermal transfer used in order to provide printing to a division surface. この発明において、分割面に印刷を付与するために用いられるインサートフィルムの説明図である。In this invention, it is explanatory drawing of the insert film used in order to provide printing to a division surface. この発明において、中間材を成形するために射出成形用型内に着脱される充填金型の斜視図である。In this invention, in order to shape | mold an intermediate material, it is a perspective view of the filling metal mold | die attached / detached in the injection mold.

この発明は、図1に示したように植毛部1と柄部2とからなる歯ブラシ用の柄の製造方法を提供するものである。その柄は全体が透明な熱可塑性合成樹脂で作られており、柄部の内部には印刷された文字A〜Gが埋没されていて、しかもその文字が植毛孔4の向く方向と垂直に広がっているために文字が歯ブラシの正面からも裏面からも明瞭に見えるものとなっている。
透明な熱可塑性樹脂としては、ポリスチレン(PS)、アクリルスチレン共重合体(AS)、ポリエチレンテレフタレート(PET)などを用いることができる。
This invention provides the manufacturing method of the handle | pattern for toothbrushes which consists of the flocked part 1 and the handle | pattern part 2 as shown in FIG. The handle is entirely made of a transparent thermoplastic synthetic resin, and printed characters A to G are embedded inside the handle, and the characters spread perpendicularly to the direction of the flock holes 4. Therefore, the characters are clearly visible from the front and back of the toothbrush.
As the transparent thermoplastic resin, polystyrene (PS), acrylic styrene copolymer (AS), polyethylene terephthalate (PET), or the like can be used.

図1に示した歯ブラシ用の柄を作るために、この発明では図2に示したような中間材Aを作る。図2に示した中間材Aでは、植毛部1は図1の植毛部1と全く同じ形状にされているが、柄部2は一部が柄部の厚み方向に2分されて、2分されたうちの1つが取り去られている。云いかえると、柄部2の一部は植毛孔4の向く方向に垂直な平面により2つに分割されて、分割されたうちの1つが除去されている。そして、分割面5は平坦な面とされる。   In order to make the handle for the toothbrush shown in FIG. 1, the intermediate material A as shown in FIG. 2 is made in the present invention. In the intermediate material A shown in FIG. 2, the flocked portion 1 has the same shape as the flocked portion 1 of FIG. 1, but the handle portion 2 is partially divided into two in the thickness direction of the handle portion. One of them has been removed. In other words, a part of the handle 2 is divided into two parts by a plane perpendicular to the direction in which the flock holes 4 face, and one of the divided parts is removed. The dividing surface 5 is a flat surface.

この発明では、このような図2に示したような中間材Aを透明な合成樹脂の射出成形により作ることが1つの特徴とされる。
この発明では中間材の分割面5に印刷3を施すことが必要である。印刷3は分割面5上に直接行うこともできるが、熱転写フィルム又はインサートフィルムとして印刷を行うことが好ましい。なお、6は透孔である。
印刷インクとしては熱可塑性合成樹脂フィルムに接着し易いものを用いる。とくにベヒクルとして熱可塑性合成樹脂を使用したものを用いることが好ましい。
One feature of the present invention is that the intermediate material A as shown in FIG. 2 is made by injection molding of a transparent synthetic resin.
In the present invention, it is necessary to perform printing 3 on the dividing surface 5 of the intermediate material. Although printing 3 can also be performed directly on the dividing surface 5, it is preferable to perform printing as a thermal transfer film or an insert film. In addition, 6 is a through-hole.
As the printing ink, an ink that can easily adhere to the thermoplastic synthetic resin film is used. In particular, it is preferable to use a vehicle using a thermoplastic synthetic resin.

上で云う熱転写フィルムは、図3に示したような構造のものにすることが好ましい。図3において、11は延伸ポリプロピレン又は延伸ポリエステルフィルムであって、その片面に剥離層12を設け、その上に印刷インクで必要な印刷層13を付設し、その上に接着層14を付設して転写フィルムは作られている。この転写フィルムは、中間材Aが冷えた状態のときに、分割面上に接着層14が直接接触するように配置し、フィルム11の上から加熱押圧して印刷層13を接着層14によって分割面に接着し、その後フィルム11を剥離層12とともに剥離して印刷層13を分割面上に付与する。   The above-mentioned thermal transfer film preferably has a structure as shown in FIG. In FIG. 3, 11 is a stretched polypropylene or stretched polyester film, which is provided with a release layer 12 on one side, a print layer 13 necessary for printing ink provided thereon, and an adhesive layer 14 provided thereon. Transfer film is made. This transfer film is arranged so that the adhesive layer 14 is in direct contact with the dividing surface when the intermediate material A is cold, and the printed layer 13 is divided by the adhesive layer 14 by heating and pressing from above the film 11. Then, the film 11 is peeled off together with the release layer 12 to give the print layer 13 on the divided surface.

剥離層としてはシリコン樹脂を用いる。シリコン樹脂の中では、ポリエステル変性シリコン樹脂又はポリマー主鎖にポリシロキサンセグメント等をグラフト重合させて得られたグラフトコポリマーを用いることが好ましい。これらのシリコン樹脂はフィルム上に直接塗布する。また、上記の接着層はアクリル樹脂、ポリエステル樹脂又はポリウレタン樹脂の溶液を塗布して付設することが好ましい。   Silicon resin is used as the release layer. Among the silicone resins, it is preferable to use a polyester-modified silicone resin or a graft copolymer obtained by graft polymerization of a polysiloxane segment or the like on the polymer main chain. These silicone resins are applied directly on the film. The adhesive layer is preferably provided by applying an acrylic resin, polyester resin or polyurethane resin solution.

上で云うインサートフィルムとしては、図4に示したようなものを用いることが好ましい。図4において、11は延伸ポリスチレン、アクリルスチレン共重合体又はポリエチレンテレフタレートフィルムであって、フィルム11の片面に印刷インクで必要な印刷層13を付設し、その上に接着層14を設けて、インサートフィルムは作られている。この場合の印刷層13と接着層14とは、図3に示した熱転写フィルムの印刷層13と接着層14と同じものを用いることができる。   As the above-mentioned insert film, it is preferable to use a film as shown in FIG. In FIG. 4, 11 is a stretched polystyrene, acrylic styrene copolymer or polyethylene terephthalate film, which is provided with a printing layer 13 necessary for printing ink on one side of the film 11 and an adhesive layer 14 thereon, and an insert. The film is made. In this case, the printed layer 13 and the adhesive layer 14 may be the same as the printed layer 13 and the adhesive layer 14 of the thermal transfer film shown in FIG.

インサートフィルムは、中間体の射出成形時に、これを成形型の分割面を形成する壁面に接着層14によって貼付しておいて、中間体成形と同時に中間体の分割面にインサートフィルム全体を融着させることによって印刷を施すことができる。   At the time of injection molding of the intermediate body, the insert film is affixed to the wall surface forming the split surface of the mold by the adhesive layer 14, and at the same time as the intermediate molding, the entire insert film is fused to the split surface of the intermediate body. Printing can be performed.

こうして印刷を施された中間体は射出成形用型内に入れられ、中間体の分割面上に前と同じ透明な熱可塑性樹脂の溶融物を射出することにより、柄部の残り半分が成形されてブラシ柄となる。このとき、溶融樹脂は柄部の端から圧入されるが、分割面が平坦な面とされているため、印刷は樹脂の圧入によって変形されることなく、元の形状を維持することができる。従って、成形されたブラシ柄では、印刷を表からも裏からもはっきりと見ることができる。   The printed intermediate is placed in an injection mold and the same transparent thermoplastic resin melt is injected onto the split surface of the intermediate to mold the other half of the handle. It becomes a brush pattern. At this time, the molten resin is press-fitted from the end of the handle, but since the divided surface is a flat surface, the original shape can be maintained without being deformed by the press-fitting of the resin. Therefore, with the molded brush pattern, the print can be clearly seen from the front and back.

この発明を実施する際には、図2に示した中間材Aを成形するための第1の成形型と、図1に示した完成品を成形するための第2の成形型とを別々に作っておいて、それぞれの成形型を用いて2回射出成形を行うことによりブラシ柄を作ることができる。この場合には、第1の成形型を用いて射出成形して得られた中間材を第2の成形型内に挿入して、2回目の射出成形を行うことになる。   When practicing this invention, the first mold for molding the intermediate material A shown in FIG. 2 and the second mold for molding the finished product shown in FIG. 1 are separately provided. The brush pattern can be made by performing injection molding twice using each mold. In this case, the intermediate material obtained by injection molding using the first mold is inserted into the second mold, and the second injection molding is performed.

そのほか、第2の成形型だけを用意し、別に図5に示したような充填金型Pを用意し、中間材Aを成形するときに、充填金型Pを第2の成形型内に挿入して射出成形を行って中間材Aを作り、あとで分割面上に熱転写して印刷を施した中間材とすることができ、また表面にインサートフィルムを貼り着けた充填金型Pを第2の成形型内に挿入して射出成形を行い、印刷を施した中間材を作ることができる。こうして得た印刷された中間材を、充填金型Pを取り除いた第2の成形型内に挿入して、2回目の射出成形を行うことにより印刷を内蔵したブラシ柄を作ることができる。この場合には、第1の成形型を作る必要がないからそれだけ有利である。充填金型Pの形状が、あとで成形される柄部の残り半分の形状と一致しなければならないことは、云うまでもない。   In addition, only the second mold is prepared, and another filling mold P as shown in FIG. 5 is prepared. When the intermediate material A is molded, the filling mold P is inserted into the second mold. Then, an injection molding is performed to produce an intermediate material A, and then an intermediate material can be formed by thermal transfer onto the divided surface and printed, and a filling mold P with an insert film attached to the surface is used as the second mold P. It is possible to make an intermediate material that has been printed by inserting it into a mold and performing injection molding. The printed intermediate material thus obtained is inserted into the second mold from which the filling mold P has been removed, and a second injection molding is performed, whereby a brush pattern with built-in printing can be made. In this case, there is no need to make the first mold, which is advantageous. Needless to say, the shape of the filling mold P must match the shape of the remaining half of the handle portion to be molded later.

この明細書では、歯ブラシの柄を例に採ってこの発明を説明したが、この発明が適用できるのは歯ブラシの柄に限らない。毛髪を整えるためのヘアーブラシや、被服の塵を払う清掃用ブラシなどにも、この発明は適用できる。
この発明によれば、印刷を内蔵したブラシ柄が得られるから、内蔵された印刷は表側からも透明な合成樹脂を通して美しく見える。しかもその印刷は消えることがないから、実用上の価値が高い。
In this specification, the present invention has been described by taking a toothbrush handle as an example, but the present invention is not limited to a toothbrush handle. The present invention can also be applied to a hair brush for trimming hair, a cleaning brush for dusting clothes, and the like.
According to the present invention, since a brush pattern with a built-in printing is obtained, the built-in printing looks beautiful through the transparent synthetic resin from the front side. Moreover, since the printing never disappears, it is highly practical.

A 中間材
P 充填金型
1 植毛部
2 柄部
3 印刷
4 植毛孔
5 分割面
6 透孔
11 フィルム
12 剥離層
13 印刷層
14 接着層
A intermediate material P filling mold 1 flocking part 2 handle part 3 printing 4 flocking hole 5 dividing surface 6 through hole 11 film 12 peeling layer 13 printing layer 14 adhesive layer

Claims (3)

植毛部と柄部とからなる所望形状のブラシ柄において、柄部を植毛孔の向く方向に垂直な平面によって2つに分割し、分割面を平坦な面とした形状の中間材を透明な熱可塑性合成樹脂の射出成形によって作り、次いで分割面上に印刷を施し、その後分割面上に上記の熱可塑性合成樹脂と同じ熱可塑性樹脂で柄部の残り半分を成形して一体とすることを特徴とする、印刷を内蔵したブラシ柄の製造方法。   In a brush pattern with a desired shape consisting of a flocked part and a handle part, the handle part is divided into two parts by a plane perpendicular to the direction of the flocking hole, and an intermediate material with a split surface as a flat surface is transparent heat It is made by injection molding of plastic synthetic resin, then printed on the divided surface, and then the other half of the pattern part is molded on the divided surface with the same thermoplastic resin as the above thermoplastic synthetic resin, and integrated. A method for manufacturing a brush pattern with built-in printing. 上記分割面上への印刷をするとき、熱転写フィルム又はインサートフィルムを用いることを特徴とする、請求項1に記載のブラシ柄の製造方法。   The method for manufacturing a brush pattern according to claim 1, wherein a thermal transfer film or an insert film is used when printing on the divided surface. 上記所望形状のブラシ柄の型窩を持った成形用型内に充填金型を付設して上記中間材を成形し、充填金型の形状を上記柄部の残り半分の形状としたことを特徴とする、請求項1又は2に記載のブラシ柄の製造方法。   The intermediate mold is formed by attaching a filling mold in a molding mold having a brush pattern mold cavity of the desired shape, and the shape of the filling mold is the shape of the remaining half of the pattern portion. The manufacturing method of the brush handle according to claim 1 or 2.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101249697B1 (en) * 2012-11-26 2013-04-05 하동문 The method and the device for fabrcating transparent toothbrush handle and the toothbrush
JP2013132301A (en) * 2011-12-23 2013-07-08 Shiiai Medical:Kk Toothbrush and printing method
JP2013255790A (en) * 2012-05-17 2013-12-26 Ufc Supply:Kk Toothbrush handle and manufacturing method therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5450672U (en) * 1977-09-09 1979-04-07
JPH0233624U (en) * 1988-08-29 1990-03-02
JPH1175938A (en) * 1997-09-03 1999-03-23 Shin Etsu Polymer Co Ltd Toothbrush handle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5450672U (en) * 1977-09-09 1979-04-07
JPH0233624U (en) * 1988-08-29 1990-03-02
JPH1175938A (en) * 1997-09-03 1999-03-23 Shin Etsu Polymer Co Ltd Toothbrush handle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013132301A (en) * 2011-12-23 2013-07-08 Shiiai Medical:Kk Toothbrush and printing method
JP2013255790A (en) * 2012-05-17 2013-12-26 Ufc Supply:Kk Toothbrush handle and manufacturing method therefor
KR101249697B1 (en) * 2012-11-26 2013-04-05 하동문 The method and the device for fabrcating transparent toothbrush handle and the toothbrush

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