WO2004113047A1 - Manufacturing method of toothbrush - Google Patents

Manufacturing method of toothbrush Download PDF

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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
Application number
PCT/KR2004/001082
Other languages
French (fr)
Inventor
Young-Jun Kwon
Sung-Hwan Kwon
Original Assignee
Young-Jun Kwon
Sung-Hwan Kwon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Young-Jun Kwon, Sung-Hwan Kwon filed Critical Young-Jun Kwon
Priority to JP2006516908A priority Critical patent/JP2006527061A/en
Publication of WO2004113047A1 publication Critical patent/WO2004113047A1/en

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.

Abstract

Disclosed is a method of manufacturing a toothbrush. The method includes implanting bristles (h) into a head insert 10 with a thickness of 1.5 - 3.0 mm, which has openings 11 formed therethrough and is made of a plastic, in such a way that portions of the bristles (h) protrude from a backside of the head insert 10 by 1 - 3 mm; melting the protruded portions of the bristles (h) by heating to fix the bristles (h) to the head insert 10; installing the head insert 10, to which the bristles (h) are fixed, in a mold for injection-molding handles in such a way that the bristles (h) are placed outside a cavity of the mold; and injection-molding a resin fed into the mold. Thereby, the bristles are fixed to the handle without using wires and time-efficient usage of a costly injection molding machine is maximized.

Description

MANUFACTURING METHOD OF TOOTHBRUSH
Technical Field
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.
Background Art
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 .
However, 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.
To avoid the above problems, there is suggested a method as disclosed in 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.
According to the above patent, 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.
However, the above patent has the following disadvantages . First, 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. Even though 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.
Second, if even one process is out of order in a sequence of processes constituting the method of the above patent, then all the processes must be stopped. 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.
Third, since operation of the injection molding machine is stopped during the implanting and melting processes, time efficiency of the manufacturing process is very poor in consideration of the costly injection molding machine .
Description of Drawings
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. β 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; and
FIG. 8 is a perspective view of a toothbrush manufactured according to the method of the present invention.
* Description of numerical references for main parts in the drawings
10: head insert, 11: opening 20: first receiving member,
30 : second receiving member
40: push plate, 41: insertion rod h: bristle, p: pin s : automatically moving insertion unit
Disclosure
Technical Problem
Accordingly, the present invention has been made keeping in mind the above problems, such as holes formed in a head of a handle of a toothbrush and use of wires, occurring in the prior art, and 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.
Technical Solution
In order to accomplish the above object, 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.
Advantageous Effects
According to the present invention, there is provided 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.
Best Mode for Carrying Out the Invention
Reference should now be made to the drawings, in which the same reference numerals are used throughout the different drawings to designate the same or similar components . 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.
After the bristles (h) are implanted into the head insert 10, 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. At this time, it is necessary to fasten the head insert 10 using a pin (p) to prevent the head insert 10, to which the bristles (h) are fixed, from being slipped out of the mold due to injection pressure. Through the above procedure, 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.

Claims

Claims
1. A method of manufacturing a toothbrush, comprising: implanting bristles (h) into a head insert 10 with a thickness of 1.5 - 3.0 mm, which has openings 11 formed therethrough and is made of plastic, in such a way that portions of the bristles (h) protrude from a backside of the head insert 10 by 1 - 3 mm; melting the protruded portions of the bristles (h) by heating to fix the bristles (h) to the head insert 10; installing the head insert 10, to which the bristles (h) are fixed, in a mold for injection-molding handles in such a way that the bristles (h) are placed outside a cavity of the mold; and injection-molding a resin fed into the mold.
2. The method as set forth in claim 1, wherein the bristles (h) are implanted through first and second receiving members, having openings 11 the same size as those of the head insert 10, into the head insert 10.
3. The method as set forth in claim 2, wherein the bristles (h) are implanted into the head insert 10 using a push plate 40, which is provided with insertion rods 41 coinciding with the openings 11.
PCT/KR2004/001082 2003-06-09 2004-05-11 Manufacturing method of toothbrush WO2004113047A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006516908A JP2006527061A (en) 2003-06-09 2004-05-11 Toothbrush manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0036887 2003-06-09
KR20030036887A KR100573898B1 (en) 2003-06-09 2003-06-09 Manufacturing method of toothbrush

Publications (1)

Publication Number Publication Date
WO2004113047A1 true WO2004113047A1 (en) 2004-12-29

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ID=33536165

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/001082 WO2004113047A1 (en) 2003-06-09 2004-05-11 Manufacturing method of toothbrush

Country Status (3)

Country Link
JP (1) JP2006527061A (en)
KR (1) KR100573898B1 (en)
WO (1) WO2004113047A1 (en)

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BE1017018A3 (en) * 2006-02-02 2007-12-04 Boucherie Nv G B METHOD FOR MANUFACTURING BRUSHES
EP1860976A1 (en) * 2005-03-11 2007-12-05 Kwon, Young-jun Toothbrush having pressure relief unit and method of producing the same
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 (en) * 2019-07-02 2019-10-18 幸福草(上海)口腔护理用品有限公司 A kind of toothbrush production automation equipment

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KR101307533B1 (en) * 2011-02-24 2013-09-12 최의정 Method of producing toothbrush
KR102123437B1 (en) 2019-02-19 2020-06-17 주식회사 리앤코 이노베이션 Toothbrush and manufacturing method thereof
KR102095522B1 (en) 2019-05-31 2020-03-31 주식회사 리앤코 이노베이션 Toothbrush and manufacturing method thereof
KR102123438B1 (en) 2019-05-31 2020-06-17 주식회사 리앤코 이노베이션 Toothbrush and manufacturing method thereof
KR102275009B1 (en) 2019-07-18 2021-07-08 주식회사 리앤코 이노베이션 Method for manufacturing toothbrush and toothbrush manufactured by the method
KR102275010B1 (en) 2019-07-18 2021-07-08 주식회사 리앤코 이노베이션 Method for manufacturing toothbrush and toothbrush manufactured by the method

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Cited By (14)

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US8042217B2 (en) 2004-11-02 2011-10-25 Colgate-Palmolive Company Toothbrush and method of making the same
EP1860976A1 (en) * 2005-03-11 2007-12-05 Kwon, Young-jun Toothbrush having pressure relief unit and method of producing the same
JP4838299B2 (en) * 2005-03-11 2011-12-14 ヨン ジュン クォン Toothbrush with built-in pressure relief member and manufacturing method thereof
BE1017018A3 (en) * 2006-02-02 2007-12-04 Boucherie Nv G B METHOD FOR MANUFACTURING BRUSHES
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 (en) * 2019-07-02 2019-10-18 幸福草(上海)口腔护理用品有限公司 A kind of toothbrush production automation equipment

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