EP1142505B1 - Procédé pour la fabrication de brosses - Google Patents

Procédé pour la fabrication de brosses Download PDF

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Publication number
EP1142505B1
EP1142505B1 EP01107718A EP01107718A EP1142505B1 EP 1142505 B1 EP1142505 B1 EP 1142505B1 EP 01107718 A EP01107718 A EP 01107718A EP 01107718 A EP01107718 A EP 01107718A EP 1142505 B1 EP1142505 B1 EP 1142505B1
Authority
EP
European Patent Office
Prior art keywords
brush body
platelet
recess
ultrasonic welding
opening
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.)
Expired - Lifetime
Application number
EP01107718A
Other languages
German (de)
English (en)
Other versions
EP1142505A2 (fr
EP1142505A3 (fr
Inventor
Bart Gerard Boucherie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GB Boucherie NV
Original Assignee
GB Boucherie NV
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 GB Boucherie NV filed Critical GB Boucherie NV
Publication of EP1142505A2 publication Critical patent/EP1142505A2/fr
Publication of EP1142505A3 publication Critical patent/EP1142505A3/fr
Application granted granted Critical
Publication of EP1142505B1 publication Critical patent/EP1142505B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a method for connecting plastic tufts provided with bristle tufts with brush bodies, in particular the same, plastic by means of ultrasonic welding or gluing.
  • US 5 217 279 discloses a method of joining a bristle tuft to the hollow, for example, tubular end of a holder.
  • a bristle tuft is folded around a plastic fiber, which in turn is bent in the opposite direction. With the free ends of the plastic fiber, the tuft is pushed into the opening of the holder. For insertion, the free ends of the plastic fibers are compressed. The restoring force of the fiber provides anchoring in the tubular end of the holder. If a higher fastening force is required, the plastic fiber can be connected to the preferably also made of plastic tubular end of the holder by ultrasonic welding together.
  • BE 10 09 925 A discloses brushes, including toothbrushes, which are composed of individual lamellae. Each lamella has an edge, which is formed in numerous tips. These tips form the bristles of the later brush.
  • the individual slats are connected to each other, for example by ultrasonic welding.
  • a method for the production of brushes in which the bristles are made of thermoplastic material, melted at one end and provided with shortening their length with a flat foot.
  • the brush body is designed as a hollow body having at least one opening. This opening is closed with the flat foot of the molten bristles. For this purpose, the foot is formed in register and melted onto the opening or on an inner step along the opening.
  • the connection between the plastics of the small plate and the brush body takes place by ultrasonic welding.
  • a to the Brush body-facing edge formed which acts as an energy concentrator during ultrasonic welding.
  • the welding is therefore carried out with high precision, so that the plate can be fixed in register with the brush body even in mass production, such as toothbrushes.
  • the edge is formed such that it tapers towards the brush body.
  • the brush body is provided with a recess into which the wafer can be inserted in register. The remaining between the outer edge of the plate and the boundary of the recess gap is then very small and barely perceptible.
  • the edge is brought to rest at its tapered end at the bottom of the recess, so that the welded connection is formed at the bottom of the recess.
  • the plate is pressed against the bottom of the recess of the brush body.
  • a projection projecting beyond the recess of the brush body is preferably formed.
  • This approach may extend over the entire circumference of the platelet, or even over a portion thereof, preferably over that portion which extends into the neck of the brush body in a toothbrush. At this point, bending stresses occur which open a gap remaining between the plate and the brush body when the head of the toothbrush is bent back in use.
  • This approach is also preferably provided with a pointing towards the brush body, tapered edge, which acts as an energy concentrator in ultrasonic welding.
  • An approximately remaining between the plate and the brush body gap can be closed by post-processing, in particular by filling with a suitable plastic compound.
  • the already equipped with the platelets brush body can be introduced into an injection mold with which an encapsulation is placed over the gap to completely fill and close this.
  • the wafer is inserted in register in a recess of the brush body and fixed there by means of an adhesive.
  • a gap remaining between the plate and the brush body can be closed by injection-molding in an injection mold.
  • the platelets are secured to the brush body by a combination of ultrasonic welding and gluing.
  • the load-bearing attachment of the plate can be carried out by welding at the bottom of the recess of the brush body, while the adhesive is introduced into the gap remaining between the plate and brush body and fills it.
  • a recess 12 is formed in the head region of a toothbrush body 10.
  • a carrier plate 14 is inserted appropriately.
  • the carrier plate 14 is provided with a number of through holes, wherein bristle tufts 16 are inserted and fixed.
  • an edge 18 is formed, which tapers towards the bottom of the recess 12.
  • the brush body 10 and the plate 14 are preferably made of the same plastic, such as polypropylene.
  • the welding is done with high precision, so that a very precise fit arrangement of the plate 14 is ensured on the brush body 10.
  • this gap may increase in the use of a toothbrush due to the bending stress occurring.
  • the platelet 14 is provided with a projection 14a, which extends into the neck region of the brush body.
  • the projection 14a is provided on its side facing the brush body with a tapered edge 14b, which acts as an energy concentrator during ultrasonic welding.
  • the recess 12 is provided with a stepped edge on the peripheral shape and the plate 14 with a mating formed peripheral edge.
  • a peripheral edge 14c is formed on the plate 14, which protrudes beyond the main body of the plate and is brought with a tapered edge on the recess 12 surrounding surface of the brush body 10 for support.
  • ultrasonic welding also takes place over the entire circumference of the small plate 14.
  • the plate 14 is pressed after the welding process to the brush body 10 and brought into close contact with this over the entire circumference, so that no gap is formed at the transition between the plate 14 and the brush body 10.
  • the recess 12 is provided with an oblique peripheral wall converging toward the interior of the brush body 10.
  • the plate 14 is provided with a matching oblique peripheral wall, so that a gap-free fit of the plate is ensured in the recess of the brush body.
  • the plate may additionally be provided with a tapered edge for the fixed welding at the bottom of the recess 12.
  • a gap remaining approximately between the wafer and the brush body can be closed by filling with a plastic compound. It is particularly useful to fill this gap by injection molding in an injection mold with plastic material.
  • the plate on the brush body receives an all-round elastic support, which can be used to dampen vibrations occurring in use.
  • connection of the plate 14 with the brush body 10 may alternatively or additionally be effected by an adhesive.
  • the adhesive may also or additionally have the function of filling a gap remaining between the plate and the brush body and thus eliminating it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Claims (15)

  1. Procédé pour relier des plaquettes (14) en matière plastique munies de touffes de soies (16) avec des corps de brosses (10) réalisés en particulier dans la même matière plastique, au moyen de soudage par ultrasons, caractérisé en ce que sur un bord périphérique (14c) respectif de la plaquette (14), tourné vers le corps de brosse (10), est formée une arête (18) qui agit en tant que concentrateur d'énergie lors du soudage par ultrasons.
  2. Procédé selon la revendication 1, caractérisé en ce que l'arête (18) se rétrécit vers le corps de brosse (10).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le corps de brosse (10) est pourvu d'un évidement (12) respectif dans lequel une plaquette (14) est insérée de manière ajustée.
  4. Procédé selon les revendications 2 et 3, caractérisé en ce qu'à son extrémité rétrécie, l'arête (18) est en appui sur le fond de l'évidement (12) et la liaison par soudage est formée sur le fond de l'évidement (12).
  5. Procédé selon la revendication 4, caractérisé en ce que sur le bord périphérique (14c) de la plaquette (14) est formé un talon (14a) qui fait saillie au-delà de l'évidement (12) du corps de brosse (10).
  6. Procédé selon la revendication 5, caractérisé en ce que le talon (14a) est mis en appui sur la surface du corps de brosse (10), qui entoure l'évidement (12).
  7. Procédé selon la revendication 6, caractérisé en ce que le talon (14a) est pourvu d'une arête (14b) qui se rétrécit vers le corps de brosse (10) et qui agit en tant que concentrateur d'énergie lors du soudage par ultrasons.
  8. Procédé selon la revendication 5, caractérisé en ce que le talon (14a) est inséré dans une élargissement en gradins de l'évidement (12) du corps de brosse (10).
  9. Procédé selon la revendication 6, caractérisé en ce que le talon (14a) est réalisé de telle sorte qu'il fait saillie jusque dans une région de transition du corps de brosse (10), qui correspond à la partie de col d'une brosse à dents.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que la plaquette (14) est pressée contre le corps de brosse (10) pendant le soudage par ultrasons.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une fente qui reste entre la plaquette (14) et le corps de brosse (10) est fermée par une masse de matière plastique.
  12. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une fente qui reste entre la plaquette (14) et le corps de brosse (10) est fermée par enrobage dans un moule de moulage par injection.
  13. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une partie du corps de brosse (10) avec la plaquette (14) insérée dans celui-ci est introduite dans un moule de moulage par injection pour enrober au moins la région périphérique de la plaquette (14).
  14. Procédé selon l'une des revendications précédentes, caractérisé en ce que la plaquette (14) est fixée sur le corps de brosse (10) par soudage par ultrasons en combinaison avec une liaison par collage.
  15. Procédé pour relier des plaquettes (14) en matière plastique munies de touffes de soies (16) avec des corps de brosses (10) réalisés en particulier dans la même matière plastique, caractérisé en ce que le corps de brosse (10) est pourvu d'un évidement (12) avec une paroi périphérique convergeant en oblique vers l'intérieur, en ce que la plaquette est pourvue d'une paroi périphérique adaptée seulement à la paroi périphérique de l'évidement (12) et est insérée avec ajustage dans l'évidement (12), et en ce que la plaquette (14) est fixée dans l'évidement (12) par soudage par ultrasons ou au moyen d'une colle.
EP01107718A 2000-04-06 2001-03-30 Procédé pour la fabrication de brosses Expired - Lifetime EP1142505B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20006311U 2000-04-06
DE20006311U DE20006311U1 (de) 2000-04-06 2000-04-06 Vorrichtung zum Befestigen von mit Borstenbüscheln versehenen Plättchen an Bürstenkörpern

Publications (3)

Publication Number Publication Date
EP1142505A2 EP1142505A2 (fr) 2001-10-10
EP1142505A3 EP1142505A3 (fr) 2003-06-11
EP1142505B1 true EP1142505B1 (fr) 2006-12-06

Family

ID=7939861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01107718A Expired - Lifetime EP1142505B1 (fr) 2000-04-06 2001-03-30 Procédé pour la fabrication de brosses

Country Status (5)

Country Link
US (1) US6779851B2 (fr)
EP (1) EP1142505B1 (fr)
AT (1) ATE347290T1 (fr)
DE (2) DE20006311U1 (fr)
ES (1) ES2275577T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020257817A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Support d'élément de nettoyage et tête de brosse à dents le comprenant
WO2020257820A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Plaque de perforation de trou pour la fabrication d'une tête de brosse à dents et partie de celle-ci
WO2020257818A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Procédé de production d'une tête de brosse à dents ou d'une partie de celle-ci
WO2020257819A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Procédé de fabrication d'une tête de brosse à dents
WO2020257816A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Tête de brosse à dents et partie de celle-ci

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EP2526815B1 (fr) 2008-06-07 2018-04-18 Trisa Holding AG Brosse à dents avec faisceaux de soies mélangés et procédé de fabrication
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US10258140B2 (en) 2014-06-26 2019-04-16 Noxell Corporation Bristled component for personal-care applicator
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020257817A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Support d'élément de nettoyage et tête de brosse à dents le comprenant
WO2020257820A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Plaque de perforation de trou pour la fabrication d'une tête de brosse à dents et partie de celle-ci
WO2020257818A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Procédé de production d'une tête de brosse à dents ou d'une partie de celle-ci
WO2020257819A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Procédé de fabrication d'une tête de brosse à dents
WO2020257816A1 (fr) 2019-06-21 2020-12-24 The Procter & Gamble Company Tête de brosse à dents et partie de celle-ci

Also Published As

Publication number Publication date
DE20006311U1 (de) 2001-08-09
EP1142505A2 (fr) 2001-10-10
US6779851B2 (en) 2004-08-24
ATE347290T1 (de) 2006-12-15
DE50111577D1 (de) 2007-01-18
ES2275577T3 (es) 2007-06-16
US20010050507A1 (en) 2001-12-13
EP1142505A3 (fr) 2003-06-11

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