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EP0079400B1 - Method of manufacturing brushes with bristles made of thermoplastics material, especially hair brushes, or bristle carriers for such brushes and brushes fabricated thereby - Google Patents

Method of manufacturing brushes with bristles made of thermoplastics material, especially hair brushes, or bristle carriers for such brushes and brushes fabricated thereby Download PDF

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Publication number
EP0079400B1
EP0079400B1 EP19810109750 EP81109750A EP0079400B1 EP 0079400 B1 EP0079400 B1 EP 0079400B1 EP 19810109750 EP19810109750 EP 19810109750 EP 81109750 A EP81109750 A EP 81109750A EP 0079400 B1 EP0079400 B1 EP 0079400B1
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EP
European Patent Office
Prior art keywords
bristles
brushes
bristle
core
flame
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
Application number
EP19810109750
Other languages
German (de)
French (fr)
Other versions
EP0079400A1 (en
Inventor
Alfred Jurt
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.)
Trisa Buerstenfabrik AG Triengen
Original Assignee
Trisa Buerstenfabrik AG Triengen
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 Trisa Buerstenfabrik AG Triengen filed Critical Trisa Buerstenfabrik AG Triengen
Priority to EP19810109750 priority Critical patent/EP0079400B1/en
Priority to DE8181109750T priority patent/DE3174347D1/en
Publication of EP0079400A1 publication Critical patent/EP0079400A1/en
Application granted granted Critical
Publication of EP0079400B1 publication Critical patent/EP0079400B1/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/023—Bristles with at least a core and at least a partial sheath
    • 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
    • A46B3/20—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier the bristles being fixed or joined in rubber bodies, e.g. in soft rubber
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0284—Bristles having rounded ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/104—Hair brush

Definitions

  • the present invention relates to a method for producing bristles from plastic brushes, in particular hairbrushes, or bristle carriers for such brushes according to the preamble of claim 1 and to brushes or bristle carriers produced by this method.
  • GB-A-1076967 has made known bristles with a core and a different colored outer layer surrounding it. By removing the outer layer at the bristle ends, the different colored core is exposed.
  • the object of the invention is to provide a method of the type mentioned at the beginning which allows the bristles to be provided in a simple manner with a head part which can no longer be detached from the bristles and at the same time and without additional effort the bristles together with the head parts have an aesthetically pleasing effect to rent.
  • the head parts can be attached to the bristle ends in a simple manner and without great additional effort, for example by moving the bristles past a heat source relative to the latter .
  • the head parts formed from the bristle material itself are permanently connected to the bristles and can no longer detach from them unless the end of the bristles is broken off. Since the bristles are two-colored, the head part that forms when the bristle ends soften or melt differs in color from the bristle. An additional process step to achieve such a color effect is therefore not necessary.
  • the brushes or bristle carriers produced by this method are distinguished by the features of claims 7 and 8.
  • the hairbrush 1 shown in FIG. 1 has a brush body 2 with a handle 3.
  • a bristle carrier 4 is inserted into a cavity in the brush body 2 and is provided with protruding bristles 5 made of plastic.
  • the bristle carrier 5 is formed by a plate made of a flexible material, preferably rubber, into which the bristles 5 are inserted in a manner known per se.
  • the pin-like bristles 5 are provided at their free end with a head part 6 which is formed in one piece with the associated bristle 5.
  • the head parts 6 have an essentially spherical shape and have a diameter which is larger than the diameter of the cylindrical bristles 5, as can be seen particularly clearly from FIG.
  • the bristles 5 have a core 7, which is surrounded by an outer layer 8, which is of a different color than the core 7.
  • the core is brown
  • the outer layer 8 is black
  • Such a bristle 5 can be produced, for example, by coloring the brown core 7 black on its outside.
  • the head parts 6 are formed by exposing the bristle ends to heat. The outer layer 8 melts away at the bristle end, with the result that the head parts 6 have a color which essentially corresponds to the color of the core 7. For example, with a brown core 7 and a black outer layer 8, a head part 6 of brownish color is obtained.
  • the color transition from the outer layer 8 of the bristle 5 to the head part 6 takes place in the transition area designated by 9 in FIG.
  • the bristle carriers 4, which are equipped with bristles 5 in a manner known per se, are moved past a heat source in the direction of arrow A at a substantially constant conveying speed by means of a conveyor belt 10.
  • this heat source is a Gas burner 11.
  • burner nozzle 11 a is directed against the bristle carrier 4 together with bristles 5 which are moved towards the burner 11, so that these bristles run towards the end 12 a of the open flame 12.
  • the axis of the burner nozzle 11a and thus also the flame 12 run essentially parallel to the direction of movement A of the bristle carrier 4 together with the bristles 5.
  • the bristles 5 which are passed under the flame 12 at a constant speed are heated at their free ends to the softening or melting point of the bristle material.
  • the substantially spherical head parts 6 are formed from the bristle material. Since the outer layer 8 melts away at the bristle ends and thus the core 7 is exposed, the head parts 6 are given a color which essentially corresponds to the color of the core 7. Behind the burner 11, the bristle ends together with the head parts 6 are cooled again by the ambient air.
  • the size and shape of the head parts 6 can be influenced by appropriate adjustment of the flame 12 and suitable selection of the conveying speed of bristle carrier 4 including bristles 5. It goes without saying that for the perfect formation of the head parts 6 the bristles 5 must consist of a suitable plastic material, e.g. made of "nylon 6/6".
  • the formation of the head parts 6 can be carried out in a simple manner, without the need for considerable time and equipment. Since the head parts 6 are formed from the material of the bristles 5 and thus consist of one piece with the latter, a permanent connection between the head part 6 and the bristle 5 is ensured. Through the use of two-color bristles, the head parts 6 receive a color in the course of their manufacture that is different from the color of the outside of the bristles 5. An aesthetically pleasing color effect is thus achieved without additional measures.
  • two-colored bristles 5 can also be used, the color appearance of which is different from that described and which e.g. have a white core 7.
  • the head parts 6 are given a different color, so that bristles with a different color appearance can be obtained without difficulty. In this sense, it is also possible to use both two-color bristles and single-color bristles for the same brush.
  • the head parts 6 are formed with bristles 5 attached to a bristle carrier 4.
  • This bristle carrier 4 together with bristles 5 is then inserted into the brush body 2 in a manner known per se.

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  • Brushes (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Borsten aus Kunststoff aufweisenden Bürsten, insbesondere Haarbürsten, oder Borstenträgern für solche Bürsten gemäss Oberbegriff des Anspruches 1 sowie nach diesem Verfahren hergestellte Bürsten bzw. Borstenträger.The present invention relates to a method for producing bristles from plastic brushes, in particular hairbrushes, or bristle carriers for such brushes according to the preamble of claim 1 and to brushes or bristle carriers produced by this method.

Es sind Haarbürsten bekannt, bei denen auf dieHairbrushes are known, in which on the

Enden von stiftartigen Kunststoffborsten, die in einem elastisch nachgiebigen Borstenträger oder einem festen Bürstenkörper gehalten sind, in einem zusätzlichen Arbeitsgang ein Köpfchen aufgebracht wird. Die Herstellung solcher Bürsten bzw. Borstenträger ist jedoch sehr aufwendig. Im weitern hat diese bekannte Lösung den Nachteil, dass sich diese Köpfchen häufig noch vor Ende der Gebrauchsdauer der Bürste infolge Alterung oder Abnützung von den Borsten lösen. Dadurch wird nicht nur das Aussehen, sondern auch der Gebrauchswert der Bürste beeinträchtigt, haben doch die an ihren Enden nicht mehr durch ein Köpfchen geschützten Borsten eine für den Benützer als unangenehm empfundene Wirkung auf die Kopfhaut.End of pin-like plastic bristles, which are held in an elastically flexible bristle holder or a solid brush body, a head is applied in an additional operation. However, the manufacture of such brushes or bristle carriers is very complex. Furthermore, this known solution has the disadvantage that these heads often become detached from the bristles before the end of the brush's useful life due to aging or wear. This affects not only the appearance, but also the practical value of the brush, as the bristles, which are no longer protected by a little head, have an unpleasant effect on the scalp that the user experiences.

Aus der CH-A-401 903 sind weiter einfarbige Borsten aus Kunststoff bekannt, deren Enden eine kugelige Verdickung aufweisen, welche durch Wärmeeinwirkung gebildet wird.From CH-A-401 903 monochrome bristles made of plastic are known, the ends of which have a spherical thickening which is formed by the action of heat.

Ferner sind durch die GB-A-1076967 Borsten mit einem Kern und einer diesen umgebenden, andersfarbigen Aussenschicht bekannt geworden. Durch Abtragen der Aussenschicht an den Borstenenden wird der andersfarbige Kern freigelegt.Furthermore, GB-A-1076967 has made known bristles with a core and a different colored outer layer surrounding it. By removing the outer layer at the bristle ends, the different colored core is exposed.

Der vorliegenden Erfindung liegt nun dieThe present invention is now the

Aufgabe zugrunde, ein Verfahren der eingangs genannten Art zu schaffen, das es erlaubt, auf einfache Weise die Borsten mit einem Kopfteil zu versehen, der sich nicht mehr von den Borsten lösen kann und gleichzeitig und ohne Mehraufwand den Borsten samt den Kopfteilen eine ästhetisch ansprechende Wirkung zu verleihen.The object of the invention is to provide a method of the type mentioned at the beginning which allows the bristles to be provided in a simple manner with a head part which can no longer be detached from the bristles and at the same time and without additional effort the bristles together with the head parts have an aesthetically pleasing effect to rent.

Diese Aufgabe wird erfindungsgemäss durch die Merkmale des kennzeichnenden Teils des Anspruches 1 gelöst.According to the invention, this object is achieved by the features of the characterizing part of claim 1.

Da es zur Bildung der Kopfteile nur erforderlich ist, die Enden der Borsten einer Wärmeeinwirkung auszusetzen, kann das Anbringen dieser Kopfteile an den Borstenenden auf einfache Weise und ohne grossen zusätzlichen Aufwand erfolgen, beispielsweise dadurch, dass die Borsten relativ zu einer Wärmequelle an dieser vorbeibewegt werden. Die aus dem Borstenmaterial selbst gebildeten Kopfteile sind mit den Borsten dauerhaft verbunden und können sich von diesen nicht mehr lösen, es sei denn, das Ende der Borsten werde abgebrochen. Da die Borsten zweifarbig sind, unterscheidet sich der sich beim Erweichen bzw. Schmelzen der Borstenenden bildende Kopfteil farblich von der Borste. Ein zusätzlicher Verfahrensschritt zur Erzielung eines derartigen Farbeffektes ist daher nicht erforderlich.Since it is only necessary to expose the ends of the bristles to heat in order to form the head parts, these head parts can be attached to the bristle ends in a simple manner and without great additional effort, for example by moving the bristles past a heat source relative to the latter . The head parts formed from the bristle material itself are permanently connected to the bristles and can no longer detach from them unless the end of the bristles is broken off. Since the bristles are two-colored, the head part that forms when the bristle ends soften or melt differs in color from the bristle. An additional process step to achieve such a color effect is therefore not necessary.

Bevorzugte Weiterausbildungen des erfindungsgemässen Verfahrens sind Gegenstand der Ansprüche 2 bis 6.Preferred further developments of the method according to the invention are the subject of claims 2 to 6.

Die nach diesem Verfahren hergestellten Bürsten bzw. Borstenträger zeichnen sich durch die Merkmale der Ansprüche 7 und 8 aus.The brushes or bristle carriers produced by this method are distinguished by the features of claims 7 and 8.

Im Folgenden wird anhand der Zeichnung eine Haarbürste sowie deren Herstellung näher erläutert. Es zeigt rein schematisch:

  • Figur 1 In perspektivischer Darstellung eine Haarbürste,
  • Figur 2 in gegenüber Figur 1 vergrössertem Masstab einen Teil einer Borste,
  • Figur 3 einen Querschnitt durch eine Borste entlang der Linie 111 - 111 in Figur 2, und
  • Figur 4 schematisch den Herstellungsvorgang.
A hairbrush and its manufacture are explained in more detail below with the aid of the drawing. It shows purely schematically:
  • 1 shows a perspective view of a hairbrush,
  • FIG. 2 shows a part of a bristle on an enlarged scale compared to FIG. 1,
  • 3 shows a cross section through a bristle along the line 111-111 in FIG. 2, and
  • Figure 4 schematically shows the manufacturing process.

Die in Figur 1 dargestellte Haarbürste 1 weist einen Bürstenkörper 2 mit einem Handgriff 3 auf. In einen Hohlraum im Bürstenkörper 2 ist ein Borstenträger 4 eingesetzt, der mit abstehenden Borsten 5 aus Kunststoff versehen ist. Der Borstenträger 5 wird durch eine Platte aus einem flexiblen Werkstoff, vorzugsweise Gummi, gebildet, in die die Borsten 5 auf an sich bekannte Weise eingesetzt sind.The hairbrush 1 shown in FIG. 1 has a brush body 2 with a handle 3. A bristle carrier 4 is inserted into a cavity in the brush body 2 and is provided with protruding bristles 5 made of plastic. The bristle carrier 5 is formed by a plate made of a flexible material, preferably rubber, into which the bristles 5 are inserted in a manner known per se.

Die stiftartigen Borsten 5 sind an ihrem freien Ende mit einem Kopfteil 6 versehen, der mit der zugehörigen Borste 5 einstückig ausgebildet ist. Die Kopfteile 6 haben im wesentlichen Kugelform und weisen einen Durchmesser auf, der grösser ist als der Durchmesser der zylindrischen Borsten 5, wie das insbesondere aus Figur 2 deutlich hervorgeht.The pin-like bristles 5 are provided at their free end with a head part 6 which is formed in one piece with the associated bristle 5. The head parts 6 have an essentially spherical shape and have a diameter which is larger than the diameter of the cylindrical bristles 5, as can be seen particularly clearly from FIG.

Wie die Querschnittsfigur 3 zeigt, weisen die Borsten 5 einen Kern 7 auf, der von einer Aussenschicht 8 umgeben ist, die von anderer Farbe ist als der Kern 7. Im vorliegenden Fall ist beispielsweise der Kern braun, während die Aussenschicht 8 von schwarzer Farbe ist. Die Herstellung einer solchen Borste 5 kann beispelsweise dadurch erfolgen, dass der braune Kern 7 auf seiner Aussenseite schwarz eingefärbt wird. Wie anhand der Figur 4 noch zu beschreiben sein wird, werden die Kopfteile 6 dadurch gebildet, dass die Borstenenden einer Wärmeeinwirkung ausgesetzt werden. Dabei schmilzt die Aussenschicht 8 am Borstenende weg, was zur Folge hat, dass die Kopfteile 6 eine Farbe aufweisen, die im wesentlichen der Farbe des Kernes 7 entspricht. So wird beispielsweise bei einem braunen Kern 7 und einer schwarzen Aussenschicht 8 ein Kopfteil 6 von bräunlicher Farbe erhalten. Der Farbübergang von der Aussenschicht 8 der Borste 5 zum Kopfteil 6 erfolgt in dem in Figur 2 mit 9 bezeichnetem Uebergangsbereich.As the cross-sectional figure 3 shows, the bristles 5 have a core 7, which is surrounded by an outer layer 8, which is of a different color than the core 7. In the present case, for example, the core is brown, while the outer layer 8 is black . Such a bristle 5 can be produced, for example, by coloring the brown core 7 black on its outside. As will still be described with reference to FIG. 4, the head parts 6 are formed by exposing the bristle ends to heat. The outer layer 8 melts away at the bristle end, with the result that the head parts 6 have a color which essentially corresponds to the color of the core 7. For example, with a brown core 7 and a black outer layer 8, a head part 6 of brownish color is obtained. The color transition from the outer layer 8 of the bristle 5 to the head part 6 takes place in the transition area designated by 9 in FIG.

Anhand der Figur 4 wird nun die Bildung der Kopfteile 6 näher erläutert.The formation of the head parts 6 will now be explained in more detail with reference to FIG.

Die auf an sich bekannte Weise mit Borsten 5 bestückten Borstenträger 4 werden mittels eines Förderbandes 10 mit im wesentlichen konstanter Fördergeschwindigkeit in Richtung des Pfeiles A an einer Wärmequelle vorbeibewegt. Im vorliegenden Fall ist diese Wärmequelle ein Gasbrenner 11. Dessen Brennerdüse 11 a ist gegen die zum Brenner 11 hin bewegten Borstenträger 4 samt Borsten 5 gerichtet, so dass diese Borsten gegen das Ende 12a der offenen Flamme 12 zulaufen. Im weitern verläuft die Achse der Brennerdüse 11a und somit auch die Flamme 12 im wesentlichen parallel zur Bewegungsrichtung A der Borstenträger 4 samt Borsten 5.The bristle carriers 4, which are equipped with bristles 5 in a manner known per se, are moved past a heat source in the direction of arrow A at a substantially constant conveying speed by means of a conveyor belt 10. In the present case, this heat source is a Gas burner 11. Its burner nozzle 11 a is directed against the bristle carrier 4 together with bristles 5 which are moved towards the burner 11, so that these bristles run towards the end 12 a of the open flame 12. Furthermore, the axis of the burner nozzle 11a and thus also the flame 12 run essentially parallel to the direction of movement A of the bristle carrier 4 together with the bristles 5.

Die mit konstanter Geschwindigkeit unter der Flamme 12 hindurchgeführten Borsten 5 werden an ihren freien Enden bis zum Erweichungs- bzw. Schmelzpunkt des Borstenwerkstoffes erwärmt. Dabei bilden sich aus dem Borstenmaterial die im wesentlichen kugelförmigen Kopfteile 6. Da an den Borstenenden die Aussenschicht 8 wegschmilzt und somit der Kern 7 freigelegt wird, erhalten die Kopfteile 6 eine Farbe, welche im wesentlichen der Farbe des Kernes 7 entspricht. Hinter dem Brenner 11 werden die Borstenenden samt den Kopfteilen 6 durch die Umgebungsluft wieder gekühlt.The bristles 5 which are passed under the flame 12 at a constant speed are heated at their free ends to the softening or melting point of the bristle material. The substantially spherical head parts 6 are formed from the bristle material. Since the outer layer 8 melts away at the bristle ends and thus the core 7 is exposed, the head parts 6 are given a color which essentially corresponds to the color of the core 7. Behind the burner 11, the bristle ends together with the head parts 6 are cooled again by the ambient air.

Durch entsprechende Einstellung der Flamme 12 und geeignete Wahl der Fördergeschwindigkeit von Borstenträger 4 samt Borsten 5 kann die Grösse und die Form der Kopfteile 6 beeinflusst werden. Es versteht sich, dass zur einwandfreien Bildung der Kopfteile 6 die Borsten 5 aus einem geeigneten Kunststoffmaterial bestehen müssen, z.B. aus "Nylon 6/6".The size and shape of the head parts 6 can be influenced by appropriate adjustment of the flame 12 and suitable selection of the conveying speed of bristle carrier 4 including bristles 5. It goes without saying that for the perfect formation of the head parts 6 the bristles 5 must consist of a suitable plastic material, e.g. made of "nylon 6/6".

Aus der vorstehenden Beschreibung des Herstellungsvorganges wird offensichtlich, dass die Bildung der Kopfteile 6 auf einfache Weise erfolgen kann, ohne dass hiefür ein erheblicher zeitlicher und apparativer Mehraufwand notwendig ist. Da die Kopfteile 6 aus dem Werkstoff der Borsten 5 gebildet werden und somit mit letzteren aus einem Stück bestehen, ist eine dauerhafte Verbindung zwischen Kopfteil 6 und Borste 5 sichergestellt. Durch die Verwendung von zweifarbigen Borsten erhalten die Kopfteile 6 im Zuge deren Herstellung eine Farbe, die anders ist als die Farbe der Aussenseite der Borsten 5. Somit wird ohne zusätzliche Massnahmen eine ästhetisch ansprechende Farbwirkung erzielt.From the above description of the manufacturing process, it is evident that the formation of the head parts 6 can be carried out in a simple manner, without the need for considerable time and equipment. Since the head parts 6 are formed from the material of the bristles 5 and thus consist of one piece with the latter, a permanent connection between the head part 6 and the bristle 5 is ensured. Through the use of two-color bristles, the head parts 6 receive a color in the course of their manufacture that is different from the color of the outside of the bristles 5. An aesthetically pleasing color effect is thus achieved without additional measures.

Es versteht sich, dass auch zweifarbige Borsten 5 verwendet werden können, deren farbliches Aussehen anders als wie beschrieben ist und die z.B. einen weissen Kern 7 aufweisen. Je nach dem Farbmuster der Borsten erhalten die Kopfteile 6 eine andere Farbe, so dass ohne Schwierigkeiten Borsten mit unterschiedlichem farblichem Aussehen erhalten werden können. In diesem Sinne ist es auch möglich, für ein und dieselbe Bürste sowohl zweifarbige Borsten wie auch einfarbige Borsten zu verwenden.It goes without saying that two-colored bristles 5 can also be used, the color appearance of which is different from that described and which e.g. have a white core 7. Depending on the color pattern of the bristles, the head parts 6 are given a different color, so that bristles with a different color appearance can be obtained without difficulty. In this sense, it is also possible to use both two-color bristles and single-color bristles for the same brush.

Anstelle eines Gasbrenners 11 können auch andere geeignete Wärmequellen verwendet werden.Instead of a gas burner 11, other suitable heat sources can also be used.

Beim gezeigten Ausführungsbeispiel erfolgt die Bildung der Kopfteile 6 bei an einem Borstenträger 4 befestigten Borsten 5. Dieser Borstenträger 4 samt Borsten 5 wird anschliessend auf an sich bekannte Weise in den Bürstenkörper 2 eingesetzt. Es ist jedoch auch möglich, die Borsten 5 direkt am Bürstenkörper zu befestigen. Auch in diesem Fall erfolgt die Bildung der Kopfteile 6 auf die beschriebene Weise.In the exemplary embodiment shown, the head parts 6 are formed with bristles 5 attached to a bristle carrier 4. This bristle carrier 4 together with bristles 5 is then inserted into the brush body 2 in a manner known per se. However, it is also possible to attach the bristles 5 directly to the brush body. In this case too, the head parts 6 are formed in the manner described.

Claims (8)

1. A method of making brushes (1) having plastic bristles (5), more particularly hair brushes, or bristle carriers for such brushes, using bristles (5) having a core (7) and an outer layer (8) surrounding the core and having a different colour, characterised in that for the purpose of making thickened top parts (6) integral with the bristles (5) the same are heated at their ends to the softening or melting temperature and then cooled.
2. A method according to claim 1, characterised in that the bristles (5) fixed to a brush part (2, 4) are moved relatively to a heat source (11) and past the same.
3. A method according to claim 2, characterised in that the bristles (5) are moved past at least one open flame (12).
4. A method according to claim 3, characterised in that the flame (12) is disposed with its end (12a) pointing against the bristles (5) which move relatively towards the flame (12).
5. A method according to claim 4, characterised in that the flame (12) is directed substantially parallel to the direction of movement (A) of the bristles (5) or of the flame (12).
6. A method according to any one of claims 2 to 5, characterised in that the speed of movement of the bristles (5) or of the heat source (11) is substantially constant.
7. A brush or bristle carrier made by the method according to any one of claims 1 to 7, in which at least some of the plastic bristles (5) have a core (7) and an outer layer (8) surrounding the same and of a different colour from the core (7), characterised in that these bristles (5) have thickened top parts (6) at their end, said top parts being integral with the bristles (5) and being of a different colour from the rest of the bristles (5).
8. A brush according to claim 7, characterised in that the bristles (5) are held on a flexible bristle carrier (4) in the form of a plate inserted in a brush body (2).
EP19810109750 1981-11-18 1981-11-18 Method of manufacturing brushes with bristles made of thermoplastics material, especially hair brushes, or bristle carriers for such brushes and brushes fabricated thereby Expired EP0079400B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19810109750 EP0079400B1 (en) 1981-11-18 1981-11-18 Method of manufacturing brushes with bristles made of thermoplastics material, especially hair brushes, or bristle carriers for such brushes and brushes fabricated thereby
DE8181109750T DE3174347D1 (en) 1981-11-18 1981-11-18 Method of manufacturing brushes with bristles made of thermoplastics material, especially hair brushes, or bristle carriers for such brushes and brushes fabricated thereby

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Application Number Priority Date Filing Date Title
EP19810109750 EP0079400B1 (en) 1981-11-18 1981-11-18 Method of manufacturing brushes with bristles made of thermoplastics material, especially hair brushes, or bristle carriers for such brushes and brushes fabricated thereby

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Publication Number Publication Date
EP0079400A1 EP0079400A1 (en) 1983-05-25
EP0079400B1 true EP0079400B1 (en) 1986-04-09

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DE (1) DE3174347D1 (en)

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US5660817A (en) 1994-11-09 1997-08-26 Gillette Canada, Inc. Desensitizing teeth with degradable particles
CN107981534A (en) * 2016-10-19 2018-05-04 同兴塑胶制品厂有限公司 Hair comb and its manufacture method

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FR2539283A1 (en) * 1983-01-14 1984-07-20 Schlerf Coronet Werke PLASTIC HAIR
US4802255A (en) * 1987-08-10 1989-02-07 Gillette Canada Inc. Novel brush filaments
US5268005A (en) * 1991-06-17 1993-12-07 Gillette Canada Inc. Method for ring-dyeing nylon filaments with indigotine dye for tooth-brushes
AU675206B2 (en) * 1991-09-13 1997-01-30 Gillette Canada Inc. Polymeric particles for dental applications
US5211939A (en) * 1991-09-13 1993-05-18 Gillette Canada Method for desensitizing teeth
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US5741479A (en) 1994-11-09 1998-04-21 Gillette Canada Inc. Desensitizing teeth with degradable particles
CN107981534A (en) * 2016-10-19 2018-05-04 同兴塑胶制品厂有限公司 Hair comb and its manufacture method
CN107981534B (en) * 2016-10-19 2021-05-28 同兴塑胶五金（深圳）有限公司 Hair comb and method for manufacturing the same

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EP0079400A1 (en) 1983-05-25

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