EP0714247A1 - Small brush, in particular interdental brush - Google Patents

Small brush, in particular interdental brush

Info

Publication number
EP0714247A1
EP0714247A1 EP94926837A EP94926837A EP0714247A1 EP 0714247 A1 EP0714247 A1 EP 0714247A1 EP 94926837 A EP94926837 A EP 94926837A EP 94926837 A EP94926837 A EP 94926837A EP 0714247 A1 EP0714247 A1 EP 0714247A1
Authority
EP
European Patent Office
Prior art keywords
brush
fibers
wire
sections
brush according
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
Application number
EP94926837A
Other languages
German (de)
French (fr)
Other versions
EP0714247B1 (en
Inventor
Norbert Dumler
Bernd Fellner
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.)
Georg Karl Geka Brush GmbH
Original Assignee
Georg Karl Geka Brush GmbH
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 Georg Karl Geka Brush GmbH filed Critical Georg Karl Geka Brush GmbH
Publication of EP0714247A1 publication Critical patent/EP0714247A1/en
Application granted granted Critical
Publication of EP0714247B1 publication Critical patent/EP0714247B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A46B3/18—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 on or between belts or wires
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/04—Bristle carriers arranged in the brush body interchangeably removable bristle carriers
    • 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
    • A46B2200/108—Inter-dental toothbrush, i.e. for cleaning interdental spaces specifically

Definitions

  • the invention relates to a brush, in particular an interdental brush, comprising a plurality of fibers. Bristles which are fixed radially projecting between two wire-like sections by twisting them.
  • the wire-like sections consist of a metal wire or of a metal wire coated with plastic.
  • the fiber sections that protrude radially are held by the clamping tension of the twisted wire and can come loose. These loose fiber sections can either be in interdental spaces or gaps get caught or get caught, which is very uncomfortable.
  • the wire sections conventionally used can cause galvanic effects when these wires come into contact with tooth fillings. Even with a plastic coating, such effects cannot be completely avoided, since the plastic coating can receive cracks during the manufacturing process or during further processing, which cracks are not mechanically large, but are at least sufficient to combine a certain electrical conductivity with the mouth saliva and to make unpleasant galvanic reactions palpable.
  • the object of the invention is to develop a brush of the type in question in such a way that the use properties and the dental care properties are further improved.
  • the wire-like sections consist of at least one plastic fiber.
  • plastic fibers with a suitable selection, can have very similar properties with regard to their twisting behavior as are known from conventionally used wires, i.e. the twisted plastic fiber sections remain in the twisted state without unscrewing themselves again so that they are able to hold the fibers or bristles or bundles of fibers or bristles in between in such a way that they protrude radially outward .
  • Suitable plastics for the fiber sections to be twisted here are preferably polyamide, polyacrylic, polypropylene, polyester, polycarbonate, PBT, PEEK and plastic fiber, which are reinforced with the aid of glass fibers or spherulites or the like.
  • the cross section of the plastic fiber is between 0.025 and 1.5 mm.
  • Fillers can also be added to the fibers, for example glass fibers or talc.
  • These fillers can also include abrasive materials such as silicon carbide or the like.
  • abrasive materials such as silicon carbide or the like.
  • Such fibers are known as such from abrasive brushes, and in addition to silicon carbide, the more resistant aluminum oxide also comes into consideration.
  • Teynex which contain silicon carbide with grain sizes between 46 and 500 and aluminum oxide with grain sizes between 80 and 500 with a grain content of 30%.
  • brushes designed in this way have the advantage that, both when new and when used for a long time, it is absolutely ensured that the brush's core, which is made of solid plastic, has no galvanic effect whatsoever, that the radially projecting bristles are reliable are kept, and that the fillers for the twisted fibers have an additional effect, for example an abrasive effect can be achieved.
  • the resilience and the rigidity of the plastic can also be adjusted with the aid of fillers, so that the twisted fibers can be adjusted in such a way that they behave similarly to a conventionally used metal wire.
  • the behavior of the fibers can also be controlled by selecting the cross-section and the cross-sectional geometry.
  • the radially projecting fibers can be selected so that they spread out under mechanical or chemical influences, so that after twisting, fiber bundles can be created from relatively fine fibers.
  • the radially projecting fibers are corrugated, for example in order to achieve a statistical distribution of the fiber tips along the circumference in this way.
  • Fig. 1 is a schematic side view of a brush according to the invention and Fig. 2 is a side view before twisting the fiber sections.

Landscapes

  • Brushes (AREA)

Abstract

In a small brush, in particular an interdental brush, comprising a plurality of fibres or bristles (5) which are secured so as to protrude radially between two wire-like units (1, 2) by twisting the latter, the handling and cleaning properties are improved by making the wire-like units (1, 2) from at least one plastic fibre (3).

Description

Bürstchen, insbesondere InterdentalbürstchenBrushes, especially interdental brushes
Die Erfindung betrifft ein Bürstchen, insbesondere Interdentalbürstchen, umfassend eine Mehrzahl von Fasern bwz. Borsten, die radial abstehend zwischen zwei drahtartigen Abschnitten durch Verdrillen derselben fest¬ gelegt sind.The invention relates to a brush, in particular an interdental brush, comprising a plurality of fibers. Bristles which are fixed radially projecting between two wire-like sections by twisting them.
Bei bekannten derartigen Bürstchen bestehen die drahtartigen Abschnitte aus einem Metalldraht oder aus einem mit Kunststoff überzogenen Metall¬ draht.In known brushes of this type, the wire-like sections consist of a metal wire or of a metal wire coated with plastic.
Diese bekannten Bürstchen weisen den Nachteil auf, daß bei Biegewechsel¬ belastungen, d.h. beim wiederholten Hin- und Herbiegen, die Gefahr be¬ steht, daß der Draht bricht. In der Regel ist eine solche Bruchgefahr im Schnitt bereits bei ca. 20 Biegewechselbelastungen gegeben, wobei selbst Drähte mit Durchmessern von 0,20 bis 0,50 mm trotz sorgfältigster Auswahl nicht mehr als 50 bis 60 derartige Belastungen zulassen.These known brushes have the disadvantage that with alternating bending loads, i.e. repeated bending back and forth there is a risk that the wire breaks. As a rule, such a risk of breakage already exists on average with approx. 20 alternating bending loads, whereby even wires with diameters of 0.20 to 0.50 mm, despite the most careful selection, do not allow more than 50 to 60 such loads.
Bricht der Draht der verdrillten Drahtabschnitte ab, kann sich der An¬ wender während der Anwendung im Mund und Rachenraum verletzen und es besteht die Gefahr des Verschluckens von abgebrochenen Stücken.If the wire of the twisted wire sections breaks off, the user can be injured in the mouth and throat area during use and there is a risk of broken pieces being swallowed.
Die Faserabschnitte, die radial abstehen, werden durch die Klemmspan¬ nung des verdrillten Drahtes gehalten und können sich lösen. Diese losen Faserabschnitte können entweder in Zahnzwischenräumen oder -spalten hängenbleiben oder eingeklemmt werden, was als sehr unangenehm empfunden wird.The fiber sections that protrude radially are held by the clamping tension of the twisted wire and can come loose. These loose fiber sections can either be in interdental spaces or gaps get caught or get caught, which is very uncomfortable.
Schließlich können durch die herkömmlicherweise verwendeten Drahtab¬ schnitte galvanische Effekte bedingt sein, wenn diese Drähte in Kontakt mit Zahnfüllungen gelangen. Selbst durch eine Kunststoffbeschichtung kön¬ nen solche Effekte nicht vollständig vermieden werden, da die Kunststoff¬ beschichtung während des Herstellungsprozesses oder bei der Weiterverar¬ beitung Risse erhalten kann, welche zwar mechanisch nicht groß sind, immerhin aber ausreichen, um eine gewisse elektrische Leitfähigkeit in Verbindung mit dem Mundspeichel zu ermöglichen und unangenehme galva¬ nische Reaktionen fühlbar zu machen.Finally, the wire sections conventionally used can cause galvanic effects when these wires come into contact with tooth fillings. Even with a plastic coating, such effects cannot be completely avoided, since the plastic coating can receive cracks during the manufacturing process or during further processing, which cracks are not mechanically large, but are at least sufficient to combine a certain electrical conductivity with the mouth saliva and to make unpleasant galvanic reactions palpable.
Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein Bürst¬ chen der in Betracht stehenden Art so weiterzubilden, daß die Gebrauchs¬ eigenschaften und die Zahnpflegeeigenschaften weiter verbessert werden.Proceeding from this, the object of the invention is to develop a brush of the type in question in such a way that the use properties and the dental care properties are further improved.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die drahtartigen Abschnitte aus wenigstens einer Kunststoffaser bestehen. Überraschender¬ weise wurde festgestellt, daß Kunststoffasern bei geeigneter Auswahl hin¬ sichtlich ihres Verdrillverhaltens ganz ähnliche Eigenschaften aufweisen können, wie sie von herkömmlicherweise verwendeten Drähten bekannt sind, d.h. die verdrillten Kunststoffaserabschnitte verbleiben im ver¬ drillten Zustand, ohne sich selbständig wieder aufzudrehen, so daß sie in der Lage sind, die dazwischen befindlichen Fasern bzw. Borsten bzw. Bündel von Fasern oder Borsten festzuhalten, und zwar derart, daß diese nach außen radial abstehen.This object is achieved in that the wire-like sections consist of at least one plastic fiber. Surprisingly, it was found that plastic fibers, with a suitable selection, can have very similar properties with regard to their twisting behavior as are known from conventionally used wires, i.e. the twisted plastic fiber sections remain in the twisted state without unscrewing themselves again so that they are able to hold the fibers or bristles or bundles of fibers or bristles in between in such a way that they protrude radially outward .
Als Kunststoffe für die hier in Betracht stehenden zu verdrillenden Fa¬ serabschnitte kommen vorzusweise Polyamid, Polyacryl, Polypropylen, Po¬ lyester, Polycarbonat, PBT, PEEK und Kunststoffaser in Betracht, welche mit Hilfe von Glasfasern oder Sphäroliten oder dergleichen verstärkt sind.Suitable plastics for the fiber sections to be twisted here are preferably polyamide, polyacrylic, polypropylene, polyester, polycarbonate, PBT, PEEK and plastic fiber, which are reinforced with the aid of glass fibers or spherulites or the like.
In weiterer Ausgestaltung der Erfindung kann vorgesehen sein, daß der Querschnitt der Kunststoffaser zwischen 0,025 und 1,5 mm liegt. Weiterhin können den Fasern Füllstoffe zugesetzt werden., z.B. Glasfasern oder Talkum.In a further embodiment of the invention it can be provided that the cross section of the plastic fiber is between 0.025 and 1.5 mm. Fillers can also be added to the fibers, for example glass fibers or talc.
Diese Füllstoffe können auch abrassive Stoffe, wie Siliciumcarbid oder dergleichen umfassen. Derartige Fasern sind als solche von Schleifbürsten her bekannt, wobei neben Siliciumcarbid auch das widerstandsfähigere Aluminiumoxyd in Betracht kommt. Auf dem Markt sind Produkte unter dem Handelsnamen "Tynex", die Siliciumcarbid mit Korngrößen zwischen 46 und 500 und Aluminiumoxyd mit Korngrößen zwischen 80 und 500 bei einem Kornanteil von 30 % enthalten.These fillers can also include abrasive materials such as silicon carbide or the like. Such fibers are known as such from abrasive brushes, and in addition to silicon carbide, the more resistant aluminum oxide also comes into consideration. There are products on the market under the trade name "Tynex", which contain silicon carbide with grain sizes between 46 and 500 and aluminum oxide with grain sizes between 80 and 500 with a grain content of 30%.
Bei der Verwendung im Dentalbereich wird mit derart ausgestalteten Bürstchen der Vorteil erreicht, daß sowohl im Neuzustand als auch bei längerem Gebrauch absolut sichergestellt ist, daß durch die aus Voll¬ kunststoff hergestellte Seele des Bürstchens keinerlei galvanische Effekt bedingt ist, daß die radial abstehenden Borsten zuverlässig gehalten werden, und daß durch die Füllstoffe für die verdrillten Fasern ein zu¬ sätzlicher Effekt, z.B. ein abrassiver Effekt, erzielt werden kann.When used in the dental field, brushes designed in this way have the advantage that, both when new and when used for a long time, it is absolutely ensured that the brush's core, which is made of solid plastic, has no galvanic effect whatsoever, that the radially projecting bristles are reliable are kept, and that the fillers for the twisted fibers have an additional effect, for example an abrasive effect can be achieved.
Darüber hinaus kann mit Hilfe von Füllstoffen gemäß einer weiteren vor¬ teilhaften Ausgestaltung der Erfindung auch das Rückstellvermögen und die Steifigkeit des Kunststoffes eingestellt werden, so daß auf diese Weise die verdrillten Fasern so eingestellt werden können, daß es sich ähnlich einem herkömmlicherweise verwendeten Metalldraht verhalten. Auch durch Auswahl des Querschnitts und der Querschnittsgeometrie kann das Verhal¬ ten der Fasern gesteuert werden.In addition, according to a further advantageous embodiment of the invention, the resilience and the rigidity of the plastic can also be adjusted with the aid of fillers, so that the twisted fibers can be adjusted in such a way that they behave similarly to a conventionally used metal wire. The behavior of the fibers can also be controlled by selecting the cross-section and the cross-sectional geometry.
Die radial abstehenden Fasern können so ausgewählt werden, daß sie sich unter mechanischen oder chemischen Einflüssen aufspreizen, so daß nach dem Verdrillen Faserbündel aus relativ feinen Fasern geschaffen werden können.The radially projecting fibers can be selected so that they spread out under mechanical or chemical influences, so that after twisting, fiber bundles can be created from relatively fine fibers.
Weiterhin kann vorgesehen sein, daß die radial abstehenden Fasern ge¬ wellt sind, beispielsweise um auf diese Weise eine möglichst statistische Verteilung der Faserspitzen längs des Umfanges zu erreichen. Nachfolgend wird die Erfindung anhand eines bevorzugten Ausführungsbei¬ spieles in Verbindung mit der Zeichnung näher erläutert. Dabei zeigenIt can further be provided that the radially projecting fibers are corrugated, for example in order to achieve a statistical distribution of the fiber tips along the circumference in this way. The invention is explained in more detail below on the basis of a preferred exemplary embodiment in conjunction with the drawing. Show
Fig. 1 eine schematische Seitenansicht eines erfindungsgemäßen Bürstchens und Fig. 2 eine Seitenansicht vor dem Verdrillen der Faserabschnitte.Fig. 1 is a schematic side view of a brush according to the invention and Fig. 2 is a side view before twisting the fiber sections.
In der Zeichnung sind zwei Abschnitte 1, 2 einer U-förmig umgebogenen Kunststoffaser 3 dargestellt. Zwischen die Abschnitte 1, 2 sind Borsten 4 eingelegt, wie dies aus Fig. 2 ersichtlich ist. Die Abschnitte 1, 2 werden dann in an sich bekannter Weise verdrillt, so daß die Borsten 4 radial nach allen Seiten wegstehen. Sie bilden eine äußere Hüllkurve 5 aus, die auch durch nachträgliches Beschneiden gebildet oder korrigiert werden kann. Die Enden der Abschnitte 1, 2 sind im Ausführungsbeispiel in einer Griffhülse 6 festgelegt, können aber auch, wie dies von Interdental- Bürstchen bekannt ist, abgeknickt und in einem speziellen Halter aus¬ wechselbar festgelegt werden. In the drawing, two sections 1, 2 of a U-shaped plastic fiber 3 are shown. Bristles 4 are inserted between the sections 1, 2, as can be seen from FIG. 2. The sections 1, 2 are then twisted in a manner known per se, so that the bristles 4 protrude radially on all sides. They form an outer envelope 5, which can also be formed or corrected by subsequent trimming. In the exemplary embodiment, the ends of the sections 1, 2 are fixed in a grip sleeve 6, but, as is known from interdental brushes, can also be kinked and fixed interchangeably in a special holder.

Claims

Schutzansprüche Protection claims
1. Bürstchen, insbesondere Interdentalbürstchen, umfassend eine Mehrzahl von Fasern bzw. Borsten, die radial abstehend zwischen zwei drahtartigen Abschnitten durch Verdrillen derselben festgelegt sind, dadurch gekenn¬ zeichnet, daß die drahtartigen Abschnitte (1, 2) aus wenigstens einer Kunststoffaser (3) bestehen.1. Brush, in particular interdental brush, comprising a plurality of fibers or bristles, which are fixed radially projecting between two wire-like sections by twisting them, characterized in that the wire-like sections (1, 2) consist of at least one plastic fiber (3). consist.
2. Bürstchen nach Anspruch 1, dadurch gekennzeichnet, daß der Quer¬ schnitt der Faser (3) zwischen 0,025 und 1,5 mm liegt.2. Brush according to claim 1, characterized in that the cross-section of the fiber (3) is between 0.025 and 1.5 mm.
3. Bürstchen nach Anspruch 1, dadurch gekennzeichnet, daß den Fasern (3) Füllstoffe zugesetzt sind.3. Brush according to claim 1, characterized in that the fibers (3) fillers are added.
4. Bürstchen nach Anspruch 3, dadurch gekennzeichnet, daß die Füllstoffe abrassive Stoffe wie Siliziumcarbid od.dgl, umfassen.4. Brush according to claim 3, characterized in that the fillers include abrasive substances such as silicon carbide or the like.
5. Bürstchen nach Anspruch 3, dadurch gekennzeichnet, daß die Füllstoffe steifigkeitserhöhend ausgewählt sind.5. Brush according to claim 3, characterized in that the fillers are selected to increase stiffness.
6. Bürstchen nach Anspruch 1, dadurch gekennzeichnet, daß die radial abstehenden Fasern (1, 2) als sich unter mechanischen oder chemischen Einflüssen aufspreizende Spreizfasern ausgebildet sind.6. Brush according to claim 1, characterized in that the radially projecting fibers (1, 2) are designed as spreading fibers spreading under mechanical or chemical influences.
7. Bürstchen nach Anspruch 1, dadurch gekennzeichnet, daß die radial abstehenden Fasern (1, 2) gewellt sind. 7. Brush according to claim 1, characterized in that the radially projecting fibers (1, 2) are corrugated.
EP94926837A 1993-08-21 1994-08-13 Small brush, in particular interdental brush Expired - Lifetime EP0714247B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9312577U 1993-08-21
DE9312577U DE9312577U1 (en) 1993-08-21 1993-08-21 Brushes, especially interdental brushes
PCT/EP1994/002714 WO1995005762A1 (en) 1993-08-21 1994-08-13 Small brush, in particular interdental brush

Publications (2)

Publication Number Publication Date
EP0714247A1 true EP0714247A1 (en) 1996-06-05
EP0714247B1 EP0714247B1 (en) 1997-01-15

Family

ID=6897094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94926837A Expired - Lifetime EP0714247B1 (en) 1993-08-21 1994-08-13 Small brush, in particular interdental brush

Country Status (5)

Country Link
US (1) US5638568A (en)
EP (1) EP0714247B1 (en)
DE (2) DE9312577U1 (en)
ES (1) ES2097060T3 (en)
WO (1) WO1995005762A1 (en)

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Publication number Priority date Publication date Assignee Title
NL1003771C2 (en) * 1996-08-09 1998-02-12 Mirjam De Wilde Interdental toothbrush.
DE19830488B4 (en) * 1997-12-10 2006-09-07 Heidelberger Druckmaschinen Ag Cleaning device for cylinders of printing machines
DE19847733A1 (en) * 1998-10-16 2000-04-20 Geka Brush Georg Karl Gmbh Mascara brush with improved application characteristics
DE10042446A1 (en) * 2000-08-29 2002-03-14 Coronet Werke Gmbh bristle article
WO2002028222A1 (en) * 2000-10-02 2002-04-11 E.I. Du Pont De Nemours And Company Low friction toothbrush
US20020120995A1 (en) * 2000-10-02 2002-09-05 Brezler Russel A. Low friction toothbrush
KR200295540Y1 (en) * 2002-08-08 2002-11-22 문명진 A tooth brush of three dimensions structure
GB2401782A (en) * 2003-05-21 2004-11-24 Welters Co Ltd Interdental brush
JP3615752B1 (en) * 2003-11-18 2005-02-02 淳 高橋 Small diameter resin twist brush
JP5083932B2 (en) * 2005-02-18 2012-11-28 ユニチカトレーディング株式会社 Method for producing brushes such as interdental brushes
DE102005027982B4 (en) * 2005-06-16 2007-09-06 Braun Gmbh Interdental brush and interdental cleaner
US8001980B2 (en) * 2006-01-11 2011-08-23 Alcan Packaging Beauty Services Multi-helicoidal applicator brush
DE102012015663A1 (en) * 2012-08-09 2014-05-15 Interbros Gmbh Interdental cleaners
DE102012022996A1 (en) 2012-11-24 2014-05-28 Robert Dieter Neeb Interdental brush has one or two brush bodies, which are arranged on finger cot, where brush bodies are connected with finger cot in form-fit, force-fit and integral manner, and finger cot is made of elastic plastic material
FR3059527B1 (en) * 2016-12-02 2019-01-25 L'oreal APPLICATOR OF MASCARA
EP3510889A1 (en) * 2018-01-10 2019-07-17 SOLO-MED GmbH Interdental brush

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US2972157A (en) * 1957-05-08 1961-02-21 Osborn Mfg Co Twisted stem tufted brush
US3878580A (en) * 1969-02-06 1975-04-22 Rayette Faberge Brush
JPS535007A (en) * 1976-07-05 1978-01-18 Kawasaki Steel Co Method of recovering energy from staving exhaust steam
JPS5317123A (en) * 1976-07-23 1978-02-16 Kagome Kk Plant come under new kind of tomato
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Title
See references of WO9505762A1 *

Also Published As

Publication number Publication date
ES2097060T3 (en) 1997-03-16
EP0714247B1 (en) 1997-01-15
DE9312577U1 (en) 1993-11-18
US5638568A (en) 1997-06-17
WO1995005762A1 (en) 1995-03-02
DE59401620D1 (en) 1997-02-27

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