US20010024060A1 - Method to attach brush bristle tufts onto carriers made of thermoplastic material - Google Patents
Method to attach brush bristle tufts onto carriers made of thermoplastic material Download PDFInfo
- Publication number
- US20010024060A1 US20010024060A1 US09/742,309 US74230900A US2001024060A1 US 20010024060 A1 US20010024060 A1 US 20010024060A1 US 74230900 A US74230900 A US 74230900A US 2001024060 A1 US2001024060 A1 US 2001024060A1
- Authority
- US
- United States
- Prior art keywords
- bristle tufts
- projections
- carrier
- punch
- holes
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
- A46D3/04—Machines for inserting or fixing bristles in bodies
- A46D3/045—Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body
-
- 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
- A46B3/04—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by mouldable materials, e.g. metals, cellulose derivatives, plastics
Definitions
- the invention relates to a method to attach brush bristle tufts onto carriers made of thermoplastic material, which are incorporated into brush bodies.
- brush bodies can be provided with a perforation pattern, corresponding to the desired tuft pattern.
- the bristle tufts are then inserted into the holes of the brush body and anchored in the holes.
- the anchoring of the bristle tufts in the brush body by means of anchor plates or loops calls for very high-performance and thus complex machines.
- the bristle tufts are attached to a carrier that is then incorporated into a brush body, for example, during the injection molding process.
- the generally plate-shaped carrier is provided with holes corresponding to the desired perforation pattern.
- the bristle tufts are inserted into the holes, whereby the tips of the bristle tufts that are to be used protrude from one surface of the carrier while the axial ends of the bristle tufts that are to be anchored in the brush protrude slightly from the opposite side. These ends of the bristle tufts that are to be anchored in the brush body are then heated, fused together and shaped into a knob.
- the invention provides a method of attaching brush bristle tufts to carriers made of thermoplastic material by means of which extremely simple method steps ensure a firm anchoring of the bristle ends in the carriers.
- a heated punch with projections penetrates between the holes into the mass of the carrier, softening it and pushing it laterally into the interstices of the bristle tufts.
- the material of the carrier is softened and deformed so that it tightly encircles the ends of the bristle tufts and, by penetrating into the interstices between the bristles, creates a tight interlocking fit.
- the surface of the punch that is between the projections is then pressed against the axial ends of the bristle tufts, whereby the displaced mass of the bristles extends over the deformed mass of the carrier.
- the projections encircle the axial ends of the bristle tufts and give the melted plastic compound a precisely defined shape.
- the bristle tufts are preferably held or supported axially so that they are not shifted axially in the holes of the carrier.
- the invention also provides a device for executing the process which is characterized by a heatable punch with a working surface that has multiple projections arranged relative to the tuft insertion holes in the carrier.
- FIG. 1 shows a cross section of a plate-shaped carrier
- FIG. 2 is a schematic sectional view for illustrating the first step of the method according to the invention.
- FIG. 3 is a schematic depiction of a further step of the method according to the invention.
- FIG. 4 is a sectional view of a carrier produced by means of the method according to the invention with bristle tufts anchored therein for incorporation into a brush body;
- FIG. 5 is a schematic perspective view of a punch used in the method
- FIG. 6 shows a variant of the punch
- FIGS. 7, 8 and 9 are top views of various embodiments of the punch.
- the plate-shaped carrier 10 shown in FIG. 1 is made of thermoplastic material and is provided with a multiplicity of holes 12 whose arrangement corresponds to a desired hole pattern or brush field of the brush.
- bristle tufts 14 are inserted into the holes 12 in such a way that their tips 14 a to be used protrude from one main surface of the carrier 10 while the ends 14 b to be anchored in the brush protrude slightly from the opposite surface.
- a heatable punch 16 with a multiplicity of annular projections 18 is positioned vis-a-vis the ends 14 b of the bristle tufts 14 , as shown in FIG. 2. Then the punch 16 , as indicated by an arrow in FIG.
- the material of the carrier 10 softens and, at the same time, is displaced against the bristle tufts 14 , it also penetrating into the interstices between the bristles, as shown in FIG. 3.
- the material of the carrier 10 also moves radially and encircles the axial ends 14 b of the bristle tufts 14 .
- the material of the softened bristles is likewise radially displaced and extends over the raised portions of the carrier that have formed between the penetrated projections 18 of the punch 16 , as shown in FIG. 4.
- This figure clearly shows the tight interlock between the carrier 10 and the deformed ends 14 b of the bristle tufts 14 .
- the ends 14 b of the bristle tufts, together with the material of the carrier 10 that encircles them and that has penetrated between them, are formed into plateau-like projections.
- the carrier 10 with the bristle tufts 14 anchored in it can thus be incorporated into a brush body, for example, by being placed into an injection mold and molding with a plastic material.
- the carriers are attached mechanically to a brush body or they are fused to the brush body, e.g. by means of ultrasonics.
- FIG. 5 is a greatly enlarged area of the punch 16 in which the projections 18 are arranged in a pyramid and circular pattern relative to the corresponding holes 12 —indicated by a dotted line—of the carrier 10 . The ends of the projections are flattened.
- the projections are circular and, when engaged with the surface of the carrier 10 , each encircle one of it holes 12 .
- FIG. 7 is a schematic top view of a larger area of the punch 16 in the embodiment according to FIG. 5, that is to say, with pyramidal projections 18 assigned to the holes 12 of the carrier 10 .
- FIG. 8 shows a variant with conical projections 18 .
- FIG. 9 shows an embodiment of the punch in which the projections 18 have the circular shape shown in FIG. 6.
Abstract
Description
- The invention relates to a method to attach brush bristle tufts onto carriers made of thermoplastic material, which are incorporated into brush bodies.
- In order to produce brushes, brush bodies can be provided with a perforation pattern, corresponding to the desired tuft pattern. The bristle tufts are then inserted into the holes of the brush body and anchored in the holes. The anchoring of the bristle tufts in the brush body by means of anchor plates or loops, however, calls for very high-performance and thus complex machines.
- According to an alternative brush manufacturing process, the bristle tufts are attached to a carrier that is then incorporated into a brush body, for example, during the injection molding process. The generally plate-shaped carrier is provided with holes corresponding to the desired perforation pattern. The bristle tufts are inserted into the holes, whereby the tips of the bristle tufts that are to be used protrude from one surface of the carrier while the axial ends of the bristle tufts that are to be anchored in the brush protrude slightly from the opposite side. These ends of the bristle tufts that are to be anchored in the brush body are then heated, fused together and shaped into a knob.
- In order to ensure adequate axial anchoring of the bristle tufts in the carriers, DE 197 38 256 C2 has proposed providing the plate-like carriers with mushroom-shaped projections which are enclosed from below by the melted material of the bristles, so that the mushroom-shaped projections and the plastically deformed mass of the bristle tufts become interlocked. This process, however, calls for a great deal of work in order to provide the plate-shaped carrier with a multiplicity of mushroom-shaped projections.
- The invention provides a method of attaching brush bristle tufts to carriers made of thermoplastic material by means of which extremely simple method steps ensure a firm anchoring of the bristle ends in the carriers. According to the invention, a heated punch with projections penetrates between the holes into the mass of the carrier, softening it and pushing it laterally into the interstices of the bristle tufts. In this process, first of all, the material of the carrier is softened and deformed so that it tightly encircles the ends of the bristle tufts and, by penetrating into the interstices between the bristles, creates a tight interlocking fit. In the preferred embodiment of the method, the surface of the punch that is between the projections is then pressed against the axial ends of the bristle tufts, whereby the displaced mass of the bristles extends over the deformed mass of the carrier. Thus, a tight interlock is created between the carriers and the bristle tufts. Here, the projections encircle the axial ends of the bristle tufts and give the melted plastic compound a precisely defined shape. During this method, the bristle tufts are preferably held or supported axially so that they are not shifted axially in the holes of the carrier.
- The invention also provides a device for executing the process which is characterized by a heatable punch with a working surface that has multiple projections arranged relative to the tuft insertion holes in the carrier.
- FIG. 1 shows a cross section of a plate-shaped carrier;
- FIG. 2 is a schematic sectional view for illustrating the first step of the method according to the invention;
- FIG. 3 is a schematic depiction of a further step of the method according to the invention;
- FIG. 4 is a sectional view of a carrier produced by means of the method according to the invention with bristle tufts anchored therein for incorporation into a brush body;
- FIG. 5 is a schematic perspective view of a punch used in the method;
- FIG. 6 shows a variant of the punch; and
- FIGS. 7, 8 and9 are top views of various embodiments of the punch.
- The plate-
shaped carrier 10 shown in FIG. 1 is made of thermoplastic material and is provided with a multiplicity ofholes 12 whose arrangement corresponds to a desired hole pattern or brush field of the brush. As shown in FIG. 2,bristle tufts 14 are inserted into theholes 12 in such a way that their tips 14 a to be used protrude from one main surface of thecarrier 10 while theends 14 b to be anchored in the brush protrude slightly from the opposite surface. Aheatable punch 16 with a multiplicity ofannular projections 18 is positioned vis-a-vis theends 14 b of thebristle tufts 14, as shown in FIG. 2. Then thepunch 16, as indicated by an arrow in FIG. 2, is moved against theends 14 b of thebristle tufts 14, theprojections 18 first penetrating into the material of thecarrier 10 between theholes 12 and thebristle tufts 14 inserted in the holes, respectively. In this process, the material of thecarrier 10 softens and, at the same time, is displaced against thebristle tufts 14, it also penetrating into the interstices between the bristles, as shown in FIG. 3. The material of thecarrier 10 also moves radially and encircles theaxial ends 14 b of thebristle tufts 14. The material of the softened bristles is likewise radially displaced and extends over the raised portions of the carrier that have formed between thepenetrated projections 18 of thepunch 16, as shown in FIG. 4. This figure clearly shows the tight interlock between thecarrier 10 and thedeformed ends 14 b of thebristle tufts 14. As can also be seen in FIG. 4, theends 14 b of the bristle tufts, together with the material of thecarrier 10 that encircles them and that has penetrated between them, are formed into plateau-like projections. Thecarrier 10 with thebristle tufts 14 anchored in it can thus be incorporated into a brush body, for example, by being placed into an injection mold and molding with a plastic material. As an alternative, the carriers are attached mechanically to a brush body or they are fused to the brush body, e.g. by means of ultrasonics. - FIG. 5 is a greatly enlarged area of the
punch 16 in which theprojections 18 are arranged in a pyramid and circular pattern relative to thecorresponding holes 12—indicated by a dotted line—of thecarrier 10. The ends of the projections are flattened. - In the embodiment of the punch shown in FIG. 6, the projections are circular and, when engaged with the surface of the
carrier 10, each encircle one of itholes 12. - FIG. 7 is a schematic top view of a larger area of the
punch 16 in the embodiment according to FIG. 5, that is to say, withpyramidal projections 18 assigned to theholes 12 of thecarrier 10. - FIG. 8 shows a variant with
conical projections 18. - FIG. 9 shows an embodiment of the punch in which the
projections 18 have the circular shape shown in FIG. 6.
Claims (9)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99125901.1 | 1999-12-22 | ||
EP99125901A EP1110479B1 (en) | 1999-12-22 | 1999-12-22 | Process for joining bristle bundles for brushes to a carrier made of thermoplastic material |
EP99125901.01 | 1999-12-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010024060A1 true US20010024060A1 (en) | 2001-09-27 |
US6406099B2 US6406099B2 (en) | 2002-06-18 |
Family
ID=8239734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/742,309 Expired - Fee Related US6406099B2 (en) | 1999-12-22 | 2000-12-22 | Method to attach brush bristle tufts onto carriers made of thermoplastic material |
Country Status (4)
Country | Link |
---|---|
US (1) | US6406099B2 (en) |
EP (1) | EP1110479B1 (en) |
DE (1) | DE59906449D1 (en) |
ES (1) | ES2201626T3 (en) |
Cited By (12)
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---|---|---|---|---|
US20060137120A1 (en) * | 2001-12-28 | 2006-06-29 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
US20070094824A1 (en) * | 2002-12-19 | 2007-05-03 | Trisa Holding Ag | Toothbrush and process for producing the same |
CN103140149A (en) * | 2010-09-29 | 2013-06-05 | 博朗有限公司 | Brush head manufacturing method |
US20180125218A1 (en) * | 2015-05-14 | 2018-05-10 | Koninklijke Philips N.V. | Brush head arrangements |
WO2019011599A1 (en) * | 2017-07-12 | 2019-01-17 | Koninklijke Philips N.V. | Brush head manufacturing method |
US10362858B2 (en) | 2015-09-03 | 2019-07-30 | Braun Gmbh | Method of manufacturing a brush and brush |
US10376349B2 (en) | 2015-05-14 | 2019-08-13 | Koninklijke Philips N.V. | Brush head assembly |
TWI676435B (en) * | 2014-07-15 | 2019-11-11 | 德商沙郎斯基股份有限公司 | Carrier plate and brush, in particular toothbrush with carrier plate |
US10500024B2 (en) | 2015-05-14 | 2019-12-10 | Koninklijke Philips N.V. | Brush head assembly and methods of manufacture |
US10575627B2 (en) | 2015-05-14 | 2020-03-03 | Koninklijke Philips N.V. | Brush head assembly and methods of manufacture |
US11160361B2 (en) | 2019-06-28 | 2021-11-02 | Koninklijke Philips N.V. | Brush head assembly |
US11219303B2 (en) | 2016-04-20 | 2022-01-11 | Trisa Holding Ag | Brush product and method for the production thereof |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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BE1015374A3 (en) * | 2003-02-21 | 2005-02-01 | Boucherie Nv G B | |
ES2385474T3 (en) | 2003-04-22 | 2012-07-25 | Trisa Holding Ag | Brush head for an electric toothbrush |
DE202004016414U1 (en) * | 2004-10-22 | 2005-02-24 | Firma G.B. Boucherie N.V. | Apparatus for fixing bristle tufts of thermoplastic material to carrier plates for the production of brushes and brush produced therewith |
US8042217B2 (en) | 2004-11-02 | 2011-10-25 | Colgate-Palmolive Company | Toothbrush and method of making the same |
BRPI0618390A2 (en) * | 2005-11-14 | 2013-01-08 | Colgate Palmolive Co | method of forming an implement for oral care of light emission, implement for oral care of light emission, and, methods of use and training of an implement for oral care |
NL1032671C2 (en) * | 2006-10-12 | 2008-04-15 | Johannes Josephus A Brekelmans | Brush unit is firmly clamped in holder and is used for clearing roads, pavements and similar |
DE102008019111A1 (en) * | 2008-04-16 | 2009-10-22 | Firma G.B. Boucherie N.V. | brush |
DE102008039778A1 (en) * | 2008-08-26 | 2010-03-04 | Firma G.B. Boucherie N.V. | Method for producing brushes, in particular toothbrushes |
US9210995B2 (en) * | 2012-09-25 | 2015-12-15 | O'nano Oral Solutions, Inc. | Toothbrush |
ES2830074T3 (en) * | 2014-12-19 | 2021-06-02 | Mc Schiffer Gmbh | Brush and procedure for its production |
JP6523900B2 (en) * | 2015-09-28 | 2019-06-05 | 三菱鉛筆株式会社 | Brush and method of manufacturing brush |
DE102021102624A1 (en) | 2021-02-04 | 2022-08-04 | M + C Schiffer Gmbh | Process for manufacturing a brush |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3403341A1 (en) * | 1984-02-01 | 1985-08-08 | Coronet - Werke Heinrich Schlerf Gmbh, 6948 Wald-Michelbach | METHOD FOR CONNECTING BRUSHES TO A BRUSH SUPPORT |
ATE110942T1 (en) | 1989-06-24 | 1994-09-15 | Frisetta Gmbh | METHOD AND DEVICE FOR MANUFACTURING BRISTLE AREAS OR BRISTLE BUNDLES. |
DE4005276A1 (en) * | 1990-02-20 | 1991-08-22 | Zahoransky Anton Fa | Insertion of bristle bundles into brush heads - where preformed bristle holes are heated by punches and bristle bundles are folded and inserted at next stage |
DE4027108A1 (en) * | 1990-08-28 | 1992-03-05 | Schlerf Coronet Werke | METHOD FOR CONNECTING BRUSH BRUSHES TO A PLASTIC BRUSH SUPPORT AND DEVICE THEREFOR |
DE4302870A1 (en) * | 1993-02-02 | 1994-08-04 | Zahoransky Anton Fa | Method of making brushes and brush making machine |
DE19604533A1 (en) * | 1996-02-08 | 1997-08-14 | Vorwerk Co Interholding | Plastics bristle bundle attachment to holder method |
DE19738256C2 (en) * | 1997-09-02 | 1999-09-23 | Rueb F A Holding Gmbh | Method and device for producing bristle fields and bristle field produced therewith |
DE19818553C1 (en) * | 1998-04-24 | 1999-08-05 | Rueb F A Holding Gmbh | Making plastic toothbrush combating microorganism growth amongst its bristles |
-
1999
- 1999-12-22 ES ES99125901T patent/ES2201626T3/en not_active Expired - Lifetime
- 1999-12-22 EP EP99125901A patent/EP1110479B1/en not_active Expired - Lifetime
- 1999-12-22 DE DE59906449T patent/DE59906449D1/en not_active Expired - Lifetime
-
2000
- 2000-12-22 US US09/742,309 patent/US6406099B2/en not_active Expired - Fee Related
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US7354112B2 (en) * | 2001-12-28 | 2008-04-08 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
US7445295B2 (en) | 2001-12-28 | 2008-11-04 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
US7458647B2 (en) | 2001-12-28 | 2008-12-02 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
US7520571B2 (en) | 2001-12-28 | 2009-04-21 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
US20060137120A1 (en) * | 2001-12-28 | 2006-06-29 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
USRE45141E1 (en) | 2001-12-28 | 2014-09-23 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
USRE44346E1 (en) | 2001-12-28 | 2013-07-09 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
US7988238B2 (en) | 2001-12-28 | 2011-08-02 | Trisa Holding Ag | Toothbrush and process for producing such a toothbrush |
US9232852B2 (en) | 2002-12-19 | 2016-01-12 | Trisa Holding Ag | Toothbrush and process for producing the same |
US7992247B2 (en) | 2002-12-19 | 2011-08-09 | Trisa Holding Ag | Toothbrush and process for producing the same |
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US20090193604A1 (en) * | 2002-12-19 | 2009-08-06 | Trisa Holding Ag | Toothbrush and process for producing the same |
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US20070094824A1 (en) * | 2002-12-19 | 2007-05-03 | Trisa Holding Ag | Toothbrush and process for producing the same |
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TWI676435B (en) * | 2014-07-15 | 2019-11-11 | 德商沙郎斯基股份有限公司 | Carrier plate and brush, in particular toothbrush with carrier plate |
US10376349B2 (en) | 2015-05-14 | 2019-08-13 | Koninklijke Philips N.V. | Brush head assembly |
US10750847B2 (en) * | 2015-05-14 | 2020-08-25 | Koninklijke Philips N.V. | Brush head arrangements |
US11224281B2 (en) * | 2015-05-14 | 2022-01-18 | Koninklijke Philips N.V. | Brush head arrangements |
US20180125218A1 (en) * | 2015-05-14 | 2018-05-10 | Koninklijke Philips N.V. | Brush head arrangements |
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US11147658B2 (en) | 2015-05-14 | 2021-10-19 | Koninklijke Philips N.V. | Brush head assembly and methods of manufacture |
US10362858B2 (en) | 2015-09-03 | 2019-07-30 | Braun Gmbh | Method of manufacturing a brush and brush |
US11219303B2 (en) | 2016-04-20 | 2022-01-11 | Trisa Holding Ag | Brush product and method for the production thereof |
CN110868889A (en) * | 2017-07-12 | 2020-03-06 | 皇家飞利浦有限公司 | Brush head manufacturing method |
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RU2769363C2 (en) * | 2017-07-12 | 2022-03-30 | Конинклейке Филипс Н.В. | Brush head manufacturing method |
US11553780B2 (en) | 2017-07-12 | 2023-01-17 | Koninklijke Philips N.V. | Brush head manufacturing method |
US11160361B2 (en) | 2019-06-28 | 2021-11-02 | Koninklijke Philips N.V. | Brush head assembly |
Also Published As
Publication number | Publication date |
---|---|
EP1110479A1 (en) | 2001-06-27 |
DE59906449D1 (en) | 2003-09-04 |
EP1110479B1 (en) | 2003-07-30 |
ES2201626T3 (en) | 2004-03-16 |
US6406099B2 (en) | 2002-06-18 |
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