WO2004113047A1 - Procede de fabrication de brosse a dents - Google Patents
Procede de fabrication de brosse a dents Download PDFInfo
- Publication number
- WO2004113047A1 WO2004113047A1 PCT/KR2004/001082 KR2004001082W WO2004113047A1 WO 2004113047 A1 WO2004113047 A1 WO 2004113047A1 KR 2004001082 W KR2004001082 W KR 2004001082W WO 2004113047 A1 WO2004113047 A1 WO 2004113047A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bristles
- head insert
- mold
- toothbrush
- injection
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14377—Coating a portion of the article, e.g. the edge of the article using an additional insert, e.g. a fastening element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
- A46D3/005—Preparing, i.e. Manufacturing brush bodies by moulding or casting a body around bristles or tufts of bristles
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
- A46B3/06—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by welding together bristles made of metal wires or plastic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14385—Coating a portion of a bundle of inserts, e.g. making brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/42—Brushes
- B29L2031/425—Toothbrush
Definitions
- the present invention pertains, in general, to a method of manufacturing a toothbrush and, more particularly, to a method of manufacturing a toothbrush without using a wire, which assures improved workability.
- a conventional method of manufacturing a toothbrush includes molding a handle with a head having holes, implanting bristles, folded in two, into the holes, and inserting metal wires, which are slightly longer than the diameter of each hole and have elasticity, into the holes to fix the bristles .
- the conventional method is problematic in that since the bristles are insecurely fixed into the holes, they are easily separated from the head, and that impurities are easily caught in the holes formed in the head of the handle, which make the toothbrush unsanitary.
- Korean Pat. No. 360977 which includes implanting bristles into a mold, melting portions of the bristles, inserted into a cavity of the mold, by heating, and injection-molding a handle of a toothbrush to unite the bristles with the handle.
- the bristles are strongly fixed to the handle, and it is not necessary to form holes on a head of the handle, thereby solving the problems as described above.
- the above patent has the following disadvantages .
- the handle since the handle is injection-molded using a mold with an unchangeable shape, the shape of the handle cannot be easily changed.
- the shape of the handle is relatively sensitive to changes in consumer preference, and thus, the unchangeable shape of the handle is considered a serious problem.
- molds with different shapes may be installed in an injection molding machine to manufacture handles with different shapes, in such a case, different toothbrushes having handles with different shapes must be undesirably manufactured and sold in the same quantity.
- the method disclosed in the above patent includes (1) implanting the bristles into the mold, (2) melting portions of the bristles, inserted into the cavity of the mold, by heating, and (3) injection-molding the handle. In this regard, even if one process is out of order among the three processes, the manufacturing of the toothbrush must be stopped.
- FIG. 1 is a perspective view of a head insert used in the present invention
- FIG. 2 is a longitudinal sectional view of a first receiving member used in the present invention
- FIG. 3 is a longitudinal sectional view of a second receiving member used in the present invention
- FIG. 4 is a longitudinal sectional view of the first receiving member, into which a push plate is inserted, used in the present invention
- FIG. 5 is a longitudinal sectional view of the head insert, into which bristles are implanted
- FIG. ⁇ illustrates melting of portions of the bristles, which protrude from the backside of the head insert
- FIG. 7 illustrates injection-molding of a handle so as to unite the head insert, which includes the bristles implanted thereinto and is installed in a mold, with the handle;
- FIG. 8 is a perspective view of a toothbrush manufactured according to the method of the present invention.
- an object of the present invention is to provide a method of manufacturing a toothbrush, which assures high manufacturing efficiency, and in which the shape of the handle can be easily changed.
- Another object of the present invention is to provide a method of manufacturing a toothbrush, in which a stoppage in one process does not affect other processes.
- the present invention provides a method of manufacturing a toothbrush.
- the method includes implanting bristles into a head insert with a thickness of 1.5 - 3.0 mm, which has openings formed therethrough and is made of a plastic, in such a way that portions of the bristles protrude from the backside of the head insert by 1 - 3 mm; melting the protruded portions of the bristles by heating to fix the bristles to the head insert; installing the head insert, to which the bristles are fixed, in a mold for injection-molding handles in such a way that the bristles are placed outside a cavity of the mold; and injection-molding a resin fed into the mold.
- a method of manufacturing a toothbrush in which bristles are fixed to a handle without using wires and time-efficient usage of a costly injection molding machine is maximized. Furthermore, in the present invention, a shape of the handle can be easily changed, and a stoppage in one process does not affect other processes, thereby maximizing manufacturing efficiency.
- FIG. 1 is a perspective view of a head insert 10 used in the present invention, which is made of plastic and has a thickness ranging from 1.5 to 3.0 mm. When the thickness is less than such a range, the head insert 10 may bend during a melting process as will be described later, and when the thickness is more than the range, a head of a toothbrush is made excessively thick.
- Openings 11 are formed through the head insert 10 to implant bristles into the head insert 10 therethrough. Unlike a conventional method adopting wires, it is not necessary to form the openings 11 in the same size, but shapes and sizes of the openings 11 may be controlled according to the arrangement of the bristles.
- the bristles cut to a desired length are implanted through a first receiving member 20 of FIG. 2 and a second receiving member 30 of FIG. 3 into the head insert 10.
- the first receiving member 20, second receiving member 30, and head insert 10 have openings 11 the same shape as each other.
- the first and second receiving members 20 and 30 must be made of metal with excellent durability because the bristles (h) are implanted through them into the head insert 10 many times .
- the bristles (h) are pushed into the first receiving member 20 using a push plate 40 (refer to FIG. 4), which is provided with insertion rods 41 coinciding with the openings 11 formed through the first receiving member 20, thereby completing insertion of the bristles (h) into the first receiving member 20.
- the implanting of the bristles (h) into the head insert 10 is achieved by pushing the bristles (h) , inserted in the first receiving member 20, into the second receiving member 30 and head insert 10 using the push plate 40 while the first receiving member 20, second receiving member 30, and head insert 10 are sequentially layered in such a way that their openings 11 are aligned with each other (refer to FIG. 5) .
- the bristles (h) are implanted into the head insert 10 in such a manner as to protrude from the backside of the head insert 10 by a range of 1 - 3 mm, and in such a case, when protruded portions of the bristles are shorter than the above range, it is difficult to clog the openings 11 through a melting process as will be described later, and when the protruded portions of the bristles are longer than the above range, the head of the toothbrush is made excessively thick.
- the portions of the bristles (h) protruding from the backside of the head insert 10 are melted by heating, thereby strongly fixing the bristles (h) to the head insert 10 while clogging the openings 11 (refer to FIG. 6) .
- the head insert 10, to which the bristles (h) are fixed, is installed in a mold for injection-molding handles in such a way that the bristles (h) are placed outside a cavity of the mold using an automatically moving insertion unit (s) as shown in FIG. 7, and a resin is then subjected to an injection-molding process in the resulting mold, thereby making the toothbrush.
- the bristles (h) , head insert 10, and handle are united with each other, and separation of the bristles (h) from the handle is completely prevented.
- the resulting toothbrush manufactured according to the present invention is illustrated in FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Brushes (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006516908A JP2006527061A (ja) | 2003-06-09 | 2004-05-11 | 歯ブラシの製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-0036887 | 2003-06-09 | ||
KR20030036887A KR100573898B1 (ko) | 2003-06-09 | 2003-06-09 | 칫솔의 제조방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004113047A1 true WO2004113047A1 (fr) | 2004-12-29 |
Family
ID=33536165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2004/001082 WO2004113047A1 (fr) | 2003-06-09 | 2004-05-11 | Procede de fabrication de brosse a dents |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2006527061A (fr) |
KR (1) | KR100573898B1 (fr) |
WO (1) | WO2004113047A1 (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1017018A3 (nl) * | 2006-02-02 | 2007-12-04 | Boucherie Nv G B | Werkwijze voor het vervaardigen van borstels. |
EP1860976A1 (fr) * | 2005-03-11 | 2007-12-05 | Kwon, Young-jun | Brosse a dents comportant un mecanisme de detente, et procede de production de la brosse a dents |
US8042217B2 (en) | 2004-11-02 | 2011-10-25 | Colgate-Palmolive Company | Toothbrush and method of making the same |
US9445660B2 (en) | 2011-01-12 | 2016-09-20 | Colgate-Palmolive Company | Oral care implement |
USD767281S1 (en) | 2013-02-26 | 2016-09-27 | Colgate-Palmolive Company | Bristle bearing surface of a toothbrush head |
US9750334B2 (en) | 2011-01-04 | 2017-09-05 | Trisa Holding Ag | Toothbrush with injection-moulded bristles and method and apparatus for producing the same |
US10244857B2 (en) | 2016-08-29 | 2019-04-02 | Colgate-Palmolive Company | Oral care implement and filament for the same |
US10299577B2 (en) | 2012-07-02 | 2019-05-28 | Trisa Holding Ag | Method for producing brushes, in particular interdental brushes, and brush, in particular interdental brush, and product group comprising a plurality of brushes |
CN110341114A (zh) * | 2019-07-02 | 2019-10-18 | 幸福草(上海)口腔护理用品有限公司 | 一种牙刷生产自动化设备 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101346040B1 (ko) * | 2011-02-24 | 2013-12-31 | 최의정 | 칫솔 |
KR102123437B1 (ko) | 2019-02-19 | 2020-06-17 | 주식회사 리앤코 이노베이션 | 칫솔 및 이의 제조방법 |
KR102123438B1 (ko) | 2019-05-31 | 2020-06-17 | 주식회사 리앤코 이노베이션 | 칫솔 및 이의 제조방법 |
KR102095522B1 (ko) | 2019-05-31 | 2020-03-31 | 주식회사 리앤코 이노베이션 | 칫솔 및 이의 제조방법 |
KR102275010B1 (ko) | 2019-07-18 | 2021-07-08 | 주식회사 리앤코 이노베이션 | 칫솔 제조 방법 및 이 방법으로 제조된 칫솔 |
KR102275009B1 (ko) | 2019-07-18 | 2021-07-08 | 주식회사 리앤코 이노베이션 | 칫솔 제조 방법 및 이 방법으로 제조된 칫솔 |
Citations (7)
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JPS60241404A (ja) * | 1984-02-01 | 1985-11-30 | コロネツト−ヴエルケ・ハインリツヒ・シユレルフ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | 剛毛と剛毛ベ−スとの結合法 |
US5158342A (en) * | 1991-06-17 | 1992-10-27 | Pai Tien Fa | Toothbrush and its manufacturing method |
US20010033875A1 (en) * | 2000-04-20 | 2001-10-25 | Boucherie Bart Gerard | Tool for injection molding of toothbrushes |
KR200233735Y1 (ko) * | 2001-02-03 | 2001-10-25 | 임성근 | P.p치솔 제조용 가변형 모핀조합 금형구조 |
KR200253132Y1 (ko) * | 2001-07-31 | 2001-11-22 | 박재석 | 칫솔모 일체형 칫솔 |
US6379139B1 (en) * | 1999-09-29 | 2002-04-30 | G. B. Boucherie, B.V. | Tool for the injection molding of toothbrush bodies consisting of several plastic components |
JP2003189941A (ja) * | 2001-12-27 | 2003-07-08 | Lion Corp | 歯ブラシ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US6290302B1 (en) * | 1998-07-14 | 2001-09-18 | Firma G.B. Boucherie, Naamloze Vennootschap | Method for manufacturing brushes and brush manufacturing machine applying this method |
JP2000287755A (ja) * | 1999-04-09 | 2000-10-17 | Lion Corp | ブラシ製品の製造方法 |
JP4862242B2 (ja) * | 2001-09-28 | 2012-01-25 | サンスター株式会社 | 歯ブラシの製造方法 |
-
2003
- 2003-06-09 KR KR20030036887A patent/KR100573898B1/ko active IP Right Grant
-
2004
- 2004-05-11 JP JP2006516908A patent/JP2006527061A/ja active Pending
- 2004-05-11 WO PCT/KR2004/001082 patent/WO2004113047A1/fr active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60241404A (ja) * | 1984-02-01 | 1985-11-30 | コロネツト−ヴエルケ・ハインリツヒ・シユレルフ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | 剛毛と剛毛ベ−スとの結合法 |
US5158342A (en) * | 1991-06-17 | 1992-10-27 | Pai Tien Fa | Toothbrush and its manufacturing method |
US6379139B1 (en) * | 1999-09-29 | 2002-04-30 | G. B. Boucherie, B.V. | Tool for the injection molding of toothbrush bodies consisting of several plastic components |
US20010033875A1 (en) * | 2000-04-20 | 2001-10-25 | Boucherie Bart Gerard | Tool for injection molding of toothbrushes |
KR200233735Y1 (ko) * | 2001-02-03 | 2001-10-25 | 임성근 | P.p치솔 제조용 가변형 모핀조합 금형구조 |
KR200253132Y1 (ko) * | 2001-07-31 | 2001-11-22 | 박재석 | 칫솔모 일체형 칫솔 |
JP2003189941A (ja) * | 2001-12-27 | 2003-07-08 | Lion Corp | 歯ブラシ |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8042217B2 (en) | 2004-11-02 | 2011-10-25 | Colgate-Palmolive Company | Toothbrush and method of making the same |
EP1860976A1 (fr) * | 2005-03-11 | 2007-12-05 | Kwon, Young-jun | Brosse a dents comportant un mecanisme de detente, et procede de production de la brosse a dents |
JP4838299B2 (ja) * | 2005-03-11 | 2011-12-14 | ヨン ジュン クォン | 圧力緩和部材が内蔵された歯ブラシ及びその製造方法 |
BE1017018A3 (nl) * | 2006-02-02 | 2007-12-04 | Boucherie Nv G B | Werkwijze voor het vervaardigen van borstels. |
US9750334B2 (en) | 2011-01-04 | 2017-09-05 | Trisa Holding Ag | Toothbrush with injection-moulded bristles and method and apparatus for producing the same |
US10835025B2 (en) | 2011-01-04 | 2020-11-17 | Trisa Holding Ag | Toothbrush with injection-moulded bristles and method and apparatus for producing the same |
US9445660B2 (en) | 2011-01-12 | 2016-09-20 | Colgate-Palmolive Company | Oral care implement |
US10299577B2 (en) | 2012-07-02 | 2019-05-28 | Trisa Holding Ag | Method for producing brushes, in particular interdental brushes, and brush, in particular interdental brush, and product group comprising a plurality of brushes |
US11622617B2 (en) | 2012-07-02 | 2023-04-11 | Trisa Holding Ag | Method for producing brushes, in particular interdental brushes, and brush, in particular interdental brush, and product group comprising a plurality of brushes |
USD767281S1 (en) | 2013-02-26 | 2016-09-27 | Colgate-Palmolive Company | Bristle bearing surface of a toothbrush head |
USD797459S1 (en) | 2013-02-26 | 2017-09-19 | Colgate-Palmolive Company | Toothbrush head |
US10244857B2 (en) | 2016-08-29 | 2019-04-02 | Colgate-Palmolive Company | Oral care implement and filament for the same |
US11445810B2 (en) | 2016-08-29 | 2022-09-20 | Colgate-Palmolive Company | Oral care implement and filament for the same |
CN110341114A (zh) * | 2019-07-02 | 2019-10-18 | 幸福草(上海)口腔护理用品有限公司 | 一种牙刷生产自动化设备 |
Also Published As
Publication number | Publication date |
---|---|
KR100573898B1 (ko) | 2006-04-26 |
KR20040105500A (ko) | 2004-12-16 |
JP2006527061A (ja) | 2006-11-30 |
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