EP0874925B1 - Process for the manufacture of spiralled bristles - Google Patents

Process for the manufacture of spiralled bristles Download PDF

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Publication number
EP0874925B1
EP0874925B1 EP96931013A EP96931013A EP0874925B1 EP 0874925 B1 EP0874925 B1 EP 0874925B1 EP 96931013 A EP96931013 A EP 96931013A EP 96931013 A EP96931013 A EP 96931013A EP 0874925 B1 EP0874925 B1 EP 0874925B1
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EP
European Patent Office
Prior art keywords
monofilament
section
cross
spiral
twisting
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EP96931013A
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German (de)
French (fr)
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EP0874925A1 (en
Inventor
Georg Weihrauch
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Coronet Werke GmbH
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Coronet Werke GmbH
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers

Definitions

  • the invention relates to a method for manufacturing spiral plastic bristles by extruding Monofilament.
  • Bristles for brush goods of any kind unfold their Brush effect first and foremost through the free ones Ends of the bristles that tear open the soiled area and remove the dirt by scratching and scraping. At the bristles fold and become stronger effective with its outer surface. You slide more stroking and sliding across the surface with a gentler Effect.
  • profiled bristles are also known, in which the Profile edges when folding the bristle a more scraping Make an impact.
  • bristles for car wash brushes known with a spiral profile (DE-U-93 19 214, DE-A-1 140 901) with a very large slope the spiral. This should in turn be the profiled Bristles are strongly scraped, by engaging only part of the helix locally is.
  • Such a bristle with a steep spiral should pass through Twisting a monofilament with an essentially star shape Cross-section can be obtained.
  • a stable bristle good recovery ability remains open at this state of the art.
  • the invention has for its object a method to propose, with the help of spiral bristles in same and predictable quality as conventional Bristles can be produced inexpensively.
  • This object is achieved according to a first variant of the invention solved in that a monofilament with one of the Circular deviating cross-section extruded and at Peeling pre-stretched while reducing its cross-section, then stretched further on at least part of its length to a spiral Bristle material twisted and through after twisting thermal shrinkage is stabilized.
  • the pre-stretching takes place immediately when the Monofilaments on the extruder, while the further stretching after cooling, e.g. after running the monofilament done by a water bath.
  • profiled Get bristle with strength properties such as from conventional, non-profiled bristles are known.
  • the subsequent twisting around the monofilament axis is made from the monofilament because of its circular shape deviating cross-section a spiral or helical Get bristle material. That way The resulting spiral becomes the one that towers above the circular shape Get the profile of the monofilament and can either extend over the entire length of the bristle or else be formed only over part of its length.
  • the Stabilization after twisting can be done in a known manner by exposure to an elevated temperature or by Store the wound, spiral bristle material Room temperature or a higher temperature done to the bristle material in the desired Fix shape.
  • the monofilament is preferably after further stretching and before twisting by thermal shrinking pre-stabilized. During this pre-stabilization heat the monofilament and then cooled so that the monofilament shrinks. In connection with further stabilization after twisting ensures that the twist of the monofilament is permanent is fixed.
  • the monofilament produced by extrusion can be one have oval or polygonal cross-section.
  • oval cross section with a drill center in the A bristle material is created with two over the axis Surface running coils.
  • a polygonal Cross section results in a number corresponding to the number of corners Number of coils.
  • a bristle material is created with spirals, the height of which corresponds to the height of the ribs is preselectable, so that comparative to the bristle deep channels arise.
  • the at least one rib or at least an edge of the polygonal cross-section changes color differentiated from the core of the monofilament by different colored Plastics are extruded, e.g. one in Core white or transparent bristle with a spiral in a signal color. If pigments are used for coloring, the helix has a harder and at the same time abrasive Surface on.
  • the core and the at least one preferably exist Rib or at least one edge of the polygonal cross section made of different plastics. So can the resulting spiral to certain operating conditions, be adjusted in particular with regard to their hardness. For example, with ribs made of relatively soft material dirt is carefully removed from carpets. A allows relatively hard material for the rib or ribs e.g. efficient cleaning in dental care the teeth. An intense brushing effect, for example Rust can be removed with ribs made of abrasive material be achieved.
  • the user can a different color design of the core and the ribs an indication of the brushing properties of the given brush.
  • the bristles must have a predetermined rigidity.
  • a The stiffness can be adjusted in a preferred embodiment achieve the invention when the monofilament a soul, a cloak of different that surrounds it Plastics is extruded. Through the Material selection can be typical of the soul, for example Properties of a bristle in terms of bending ability own while the coat is for the intended use most suitable properties.
  • the ribs running on the jacket can either from its material or a different material consist.
  • Another solution to the problem of the invention is extrusion of monofilaments with, for example, circular Cross section from.
  • Such a process stands out characterized in that at least two monofilaments when pulling off pre-stretched while reducing their cross-section and then stretched further, then into a spiral Bristle material twisted together and after Twisting stabilized by thermal shrinking become.
  • the monofilaments can be stretched further and before twisting by thermal Shrinkage can be stabilized.
  • This stabilization too can by exposure to elevated temperature or by Store the wound bristle material at room temperature or an elevated temperature.
  • the brushing effect depends, among other things, on the measure the twist based on the effective length of a bristle or the bristle material, i.e. from the pitch of yourself due to the helix forming the twist. It has shown that the pitch of the helix is not greater than that double the useful length of the bristle should be so that along a usable length of 180 ° around the useful length is. However, the helix preferably has a smaller one Pitch that is up to the size of the diameter of the Bristle material can be. With toothbrushes an incline proved to be favorable, at least two, preferably three to five turns per cm of bristle length available.
  • Monofilament or the monofilament made of an elastic plastic consist.
  • the Bristle material produced bristles in the longitudinal direction stretch which entails a reduction in their diameter brings so that, for example, when used in toothbrushes or as an interdental cleaner in an interdental space introduced, but do not get stuck in it can.
  • the bristle expands and can also twist up.
  • the bristle material produced according to the invention is included special advantages with a variety of brushes applicable. So they are between those on the surface existing helixes in particular suitable for the dirt loosened during brushing record and save and only at the end of the brushing section to deliver. This beneficial effect is coming for example with carpet brushes, vacuum cleaner brushes, Polishing brushes etc. for effect.
  • the different cleaning effects the bristle ends and the flanks of the spirals in in many cases combine them advantageously.
  • the untwisted section has smaller cross-sectional dimensions and can therefore be easier to insert into an interdental space. Introducing can be further facilitated if the untwisted Subarea at least in sections for example, cross-section flattened by pressing having.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung spiraliger Borsten aus Kunststoff durch Extrudieren von Monofilen.The invention relates to a method for manufacturing spiral plastic bristles by extruding Monofilament.

Borsten für Bürstenwaren beliebiger Art entfalten ihre Bürstwirkung zunächst und vornehmlich durch die freien Enden der Borsten, die die verschmutzte Fläche aufreißen und durch Kratzen und Schaben den Schmutz entfernen. Bei stärkerem Andruck legen sich die Borsten um und werden mit ihrer Mantelfläche wirksam. Sie gleiten mehr streichend und schiebend über die Oberfläche mit einer schonenderen Wirkung.Bristles for brush goods of any kind unfold their Brush effect first and foremost through the free ones Ends of the bristles that tear open the soiled area and remove the dirt by scratching and scraping. At the bristles fold and become stronger effective with its outer surface. You slide more stroking and sliding across the surface with a gentler Effect.

Neben kreisrunden Borsten mit den vorgenannten Wirkungen sind auch profilierte Borsten bekannt, bei denen die Profilkanten beim Umlegen der Borste eine stärker schabende Wirkung entfalten. Ferner sind Borsten für Autowaschbürsten mit einem spiraligen Profil bekannt (DE-U-93 19 214, DE-A-1 140 901) mit einer sehr großen Steigung der Spirale. Hiermit soll wiederum die von profilierten Borsten her stark schabende Wirkung gemindert werden, indem lokal immer nur ein Teil der Wendel im Eingriff ist. Eine solche Borste mit steiler Wendel soll durch Verdrillen eines Monofils mit im wesentlichen sternförmigem Querschnitt erhalten werden. Wie dies im einzelnen geschehen und insbesondere zu einer stabilen Borste mit einem guten Wiederaufrichtvermögen führen soll, bleibt bei diesem Stand der Technik offen.In addition to circular bristles with the aforementioned effects profiled bristles are also known, in which the Profile edges when folding the bristle a more scraping Make an impact. There are also bristles for car wash brushes known with a spiral profile (DE-U-93 19 214, DE-A-1 140 901) with a very large slope the spiral. This should in turn be the profiled Bristles are strongly scraped, by engaging only part of the helix locally is. Such a bristle with a steep spiral should pass through Twisting a monofilament with an essentially star shape Cross-section can be obtained. Like this in detail happen and in particular with a stable bristle good recovery ability remains open at this state of the art.

Es ist ferner bekannt, konische Borsten an ihrer Mantelfläche mit einer Wendel zu versehen (DE-U-85 22 986). Dies geschieht durch nachträgliches Anformen der Wendel oder durch Spritzen der Borste. Diese Borste hat insbesondere den Zweck, bei Haarbürsten das Auftragen von Medien zu erleichtern und zu verbessern. Gespritzte oder nachträglich profilierte Borsten benötigen aber einen nennenswerten Querschnitt, um ausreichend biegefest zu sein. Sie sind daher eher als Stifte, denn als Borsten zu bezeichnen.It is also known to have conical bristles on their outer surface to be provided with a helix (DE-U-85 22 986). This is done by subsequently forming the helix or by spraying the bristle. This bristle has in particular the purpose of applying hairbrushes Facilitate and improve media. Splashed or subsequently profiled bristles need one noteworthy cross-section in order to be sufficiently resistant to bending be. They are therefore more like pins than bristles too describe.

Schließlich ist es bekannt (DE-A-16 60 646), schraubenförmige Fasern durch Extrudieren eines Monofils unter starker Scherbeanspruchung herzustellen, so daß es zu Schmelzbrüchen kommt. Die Schraubenform wird also unmittelbar an der Extruderdüse erzeugt und durch schlagartiges Abkühlen nach der Düse fixiert. Aufgrund der starken Scherbeanspruchung, die bewußt zu Schmelzbrüchen führen soll, und das schlagartige Abschrecken des noch schmelzplastischen Materials leidet die Stabilität der Faser ganz beträchtlich. Die Faser ist als Borstenmaterial nicht einsetzbar. Zudem läßt sich die Seigung der Schraubenwandel überhaupt nicht beeinflussen.Finally, it is known (DE-A-16 60 646), helical Fibers by extruding a monofilament underneath produce strong shear stress so that it too Melt breaks are coming. So the screw shape becomes immediate generated at the extruder nozzle and by sudden Cooling fixed after the nozzle. Because of the strong Shear stress that deliberately leads to melt fractures and the sudden quenching of the still melt-plastic Materials suffer from the stability of the fiber quite considerable. The fiber is a bristle material Not insertable. In addition, the slope of the screw change can be don't affect at all.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren vorzuschlagen, mit dessen Hilfe spiralige Borsten in gleicher und vorbestimmbarer Qualität wie herkömmliche Borsten in preiswerter Weise hergestellt werden können.The invention has for its object a method to propose, with the help of spiral bristles in same and predictable quality as conventional Bristles can be produced inexpensively.

Diese Aufgabe wird gemäß einer ersten Variante der Erfindung dadurch gelöst, daß ein Monofil mit einem von der Kreisform abweichenden Querschnitt extrudiert und beim Abziehen unter Verringerung seines Querschnittes vorverstreckt, anschließend weiterverstreckt, daraufhin auf zumindest einem Teil seiner Länge zu einem spiraligen Borstenmaterial verdrillt und nach dem Verdrillen durch thermisches Schrumpfen stabilisiert wird.This object is achieved according to a first variant of the invention solved in that a monofilament with one of the Circular deviating cross-section extruded and at Peeling pre-stretched while reducing its cross-section, then stretched further on at least part of its length to a spiral Bristle material twisted and through after twisting thermal shrinkage is stabilized.

Das Vorverstrecken erfolgt unmittelbar beim Abzug des Monofils am Extruder, während das weitere Verstrecken nach dem Abkühlen, z.B. nach dem Durchlauf des Monofils durch ein Wasserbad erfolgt. Durch das Vorverstrecken und anschließende weitere Verstrecken wird eine profilierte Borste mit Festigkeitseigenschaften erhalten, wie sie von herkömmlichen, nicht- profilierten Borsten bekannt sind. Durch das anschließende Verdrillen um die Monofilachse wird aus dem Monofil aufgrund seines von der Kreisform abweichenden Querschnitts ein spiraliges bzw. schraubenförmiges Borstenmaterial erhalten. Die auf diese Weise entstehende Wendel wird aus dem die Kreisform überragenden Profil des Monofils erhalten und kann sich entweder über die gesamte Länge der Borste erstrecken oder auch nur auf einem Teil ihrer Länge ausgebildet sein. Das Stabilisieren nach dem Verdrillen kann in bekannter Weise durch Einwirken einer erhöhten Temperatur oder durch Lagern des aufgespulten, spiraligen Borstenmaterials bei Raumtemperatur oder einer demgegenüber erhöhten Temperatur erfolgen, um das Borstenmaterial in der gewünschten Form zu fixieren.The pre-stretching takes place immediately when the Monofilaments on the extruder, while the further stretching after cooling, e.g. after running the monofilament done by a water bath. By pre-stretching and subsequent further stretching is profiled Get bristle with strength properties, such as from conventional, non-profiled bristles are known. Through the subsequent twisting around the monofilament axis is made from the monofilament because of its circular shape deviating cross-section a spiral or helical Get bristle material. That way The resulting spiral becomes the one that towers above the circular shape Get the profile of the monofilament and can either extend over the entire length of the bristle or else be formed only over part of its length. The Stabilization after twisting can be done in a known manner by exposure to an elevated temperature or by Store the wound, spiral bristle material Room temperature or a higher temperature done to the bristle material in the desired Fix shape.

Vorzugsweise wird das Monofil nach dem weiteren Verstrecken und vor dem Verdrillen durch thermisches Schrumpfen vorstabilisiert. Bei diesem Vorstabilisieren wird das Monofil mit Wärme beaufschlagt und anschließend abgekühlt, so daß das Monofil schrumpft. In Verbindung mit dem weiteren Stabilisieren nach dem Verdrillen ist gewährleistet, daß der Drall des Monofils dauerhaft fixiert ist.The monofilament is preferably after further stretching and before twisting by thermal shrinking pre-stabilized. During this pre-stabilization heat the monofilament and then cooled so that the monofilament shrinks. In connection with further stabilization after twisting ensures that the twist of the monofilament is permanent is fixed.

Das durch Extrudieren hergestellte Monofil kann einen ovalen oder polygonalen Querschnitt aufweisen. Im Falle eines ovalen Querschnittes mit einem Drillzentrum in der Achse entsteht ein Borstenmaterial mit zwei über die Oberfläche laufenden Wendeln. Bei einem polygonalen Querschnitt ergibt sich eine der Anzahl der Ecken entsprechende Anzahl von Wendeln. Vorzugsweise wird ein rechteckiger, insbesondere quadratischer Querschnitt gewählt, so daß sich auf dem Mantel vier Wendeln ausbilden.The monofilament produced by extrusion can be one have oval or polygonal cross-section. In the event of an oval cross section with a drill center in the A bristle material is created with two over the axis Surface running coils. With a polygonal Cross section results in a number corresponding to the number of corners Number of coils. Preferably a rectangular, in particular square cross section chosen so that four coils form on the jacket.

Stattdessen kann auch ein Monofil mit einem Kern und wenigstens einer achsparallelen Rippe extrudiert und verdrillt werden. In diesem Fall entsteht ein Borstenmaterial mit Wendeln, deren Höhe entsprechend der Rippenhöhe vorwählbar ist, so daß an der Borste vergleichsweise tiefe Kanäle entstehen.Instead, a monofilament with a core and extruded at least one axially parallel rib and be twisted. In this case a bristle material is created with spirals, the height of which corresponds to the height of the ribs is preselectable, so that comparative to the bristle deep channels arise.

Für bestimmte Einsatzgebiete muß sichergestellt sein, daß ein Benutzer Bürsten mit insbesondere abrasiv wirkenden spiraligen Borsten als solche erkennt und diese nicht irrtümlicherweise verwendet, wie es beispielsweise bei Zahnbürsten zur Pflege empfindlichen Zahnfleisches der Fall ist. In Weiterbildung der Erfindung ist deshalb vorgesehen, daß die zumindest eine Rippe oder wenigstens eine Kante des polygonalen Querschnittes sich farblich von dem Kern des Monofils unterscheidet, indem verschiedenfarbige Kunststoffe extrudiert werden, z.B. eine im Kern weiße oder transparente Borste mit einer Wendel in einer Signalfarbe. Werden zum Einfärben Pigmente verwendet, weist die Wendel eine härtere und zugleich abrasive Oberfläche auf. For certain areas of application, it must be ensured that a user brushes with particularly abrasive recognizes spiral bristles as such and not mistakenly used, such as in Toothbrushes for the care of sensitive gums Case is. In further development of the invention is therefore provided that the at least one rib or at least an edge of the polygonal cross-section changes color differentiated from the core of the monofilament by different colored Plastics are extruded, e.g. one in Core white or transparent bristle with a spiral in a signal color. If pigments are used for coloring, the helix has a harder and at the same time abrasive Surface on.

Vorzugsweise bestehen der Kern und die zumindest eine Rippe bzw. wenigstens eine Kante des polygonalen Querschnitts aus unterschiedlichen Kunststoffen. Somit kann die entstehende Wendel an bestimmte Einsatzbedingungen, insbesondere hinsichtlich ihrer Härte angepaßt werden. Mit Rippen aus relativ weichem Material kann beispielsweise aus Teppichen schonend Schmutz entfernt werden. Ein relativ hartes Material für die Rippe oder Rippen ermöglicht z.B. bei der Zahnpflege eine effiziente Reinigung der Zähne. Eine intensive Bürstwirkung beispielsweise zum Entfernern von Rost kann mit Rippen aus abrasivem Material erzielt werden. Auch hierbei kann dem Benutzer durch eine farblich unterschiedliche Gestaltung des Kerns und der Rippen ein Hinweis auf die Bürsteigenschaften der jeweiligen Bürste gegeben werden.The core and the at least one preferably exist Rib or at least one edge of the polygonal cross section made of different plastics. So can the resulting spiral to certain operating conditions, be adjusted in particular with regard to their hardness. For example, with ribs made of relatively soft material dirt is carefully removed from carpets. A allows relatively hard material for the rib or ribs e.g. efficient cleaning in dental care the teeth. An intense brushing effect, for example Rust can be removed with ribs made of abrasive material be achieved. Here, too, the user can a different color design of the core and the ribs an indication of the brushing properties of the given brush.

Bei bestimmten Bürsten ist es notwendig, daß die Borsten eine vorbestimmte Steifigkeit besitzen müssen. Eine Anpassung der Steifigkeit läßt sich in bevorzugter Ausgestaltung der Erfindung erzielen, wenn das Monofil aus einer Seele, einem diese umgebenden Mantel aus unterschiedlichen Kunststoffen extrudiert wird. Durch die Materialauswahl kann beispielsweise die Seele typische Eigenschaften einer Borste hinsichtlich des Biegevermögens besitzen, während der Mantel die für den Bestimmungszweck am besten geeigneten Eigenschaften aufweist. Die auf dem Mantel verlaufenden Rippen können entweder aus dessen Material oder einem davon verschiedenen Material bestehen.With certain brushes it is necessary that the bristles must have a predetermined rigidity. A The stiffness can be adjusted in a preferred embodiment achieve the invention when the monofilament a soul, a cloak of different that surrounds it Plastics is extruded. Through the Material selection can be typical of the soul, for example Properties of a bristle in terms of bending ability own while the coat is for the intended use most suitable properties. The ribs running on the jacket can either from its material or a different material consist.

Eine andere Lösung der Erfindungsaufgabe geht vom Extrudieren von Monofilen mit beispielsweise kreisförmigem Querschnitt aus. Ein solches Verfahren zeichnet sich dadurch aus, daß wenigstens zwei Monofile beim Abziehen unter Verringerung ihres Querschnittes vorverstreckt und anschließend weiterverstreckt, daraufhin zu einem spiraligen Borstenmaterial miteinander verdrillt und nach dem Verdrillen durch thermisches Schrumpfen stabilisiert werden.Another solution to the problem of the invention is extrusion of monofilaments with, for example, circular Cross section from. Such a process stands out characterized in that at least two monofilaments when pulling off pre-stretched while reducing their cross-section and then stretched further, then into a spiral Bristle material twisted together and after Twisting stabilized by thermal shrinking become.

Hier wird also die spiralig profilierte Mantelfläche der Borste durch zumindest zwei miteinander verdrillte Monofile beliebigen Querschnitts Art erhalten. Ihre Stabilität erhalten sie durch die bei Borsten übliche Art der Herstellung.So here is the spiral profiled surface of the Bristle through at least two monofilaments twisted together receive any cross-sectional type. Your stability they are obtained through the type of bristles that are common Manufacturing.

Auch hierbei können die Monofile nach dem weiteren Verstrecken und vor dem Verdrillen durch thermisches Schrumpfen stabilisiert werden. Auch dieses Stabilisieren kann durch Einwirkung erhöhter Temperatur oder durch Lagern des aufgespulten Borstenmaterials bei Raumtemperatur oder einer demgegenüber erhöhten Temperatur erfolgen.Here, too, the monofilaments can be stretched further and before twisting by thermal Shrinkage can be stabilized. This stabilization too can by exposure to elevated temperature or by Store the wound bristle material at room temperature or an elevated temperature.

Die Bürstwirkung ist unter anderem abhängig von dem Maß der Verdrillung bezogen auf die Nutzlänge einer Borste bzw. des Borstenmaterials, d.h. von der Ganghöhe der sich infolge der Verdrillung bildenden Wendel. Es hat sich gezeigt, daß die Ganghöhe der Wendel nicht größer als die doppelte Nutzlänge der Borste sein sollte, so daß entlang der Nutzlänge eine um 180° umlaufende Wendel vorhanden ist. Vorzugsweise besitzt die Wendel jedoch eine kleinere Ganghöhe, die bis zu der Größe des Durchmessers des Borstenmaterials betragen kann. Bei Zahnbürsten hat sich eine Steigung als günstig erwiesen, bei der mindestens zwei, vorzugsweise drei bis fünf Windungen pro cm Borstenlänge vorhanden sind.The brushing effect depends, among other things, on the measure the twist based on the effective length of a bristle or the bristle material, i.e. from the pitch of yourself due to the helix forming the twist. It has shown that the pitch of the helix is not greater than that double the useful length of the bristle should be so that along a usable length of 180 ° around the useful length is. However, the helix preferably has a smaller one Pitch that is up to the size of the diameter of the Bristle material can be. With toothbrushes an incline proved to be favorable, at least two, preferably three to five turns per cm of bristle length available.

In Weiterbildung der Erfindung ist vorgesehen, daß das Monofil bzw. die Monofile aus einem elastischen Kunststoff bestehen. Auf diese Weise lassen sich die aus den Borstenmaterial hergestellten Borsten in Längsrichtung dehnen, was eine Verringerung ihres Durchmessers mit sich bringt, so daß sie beispielsweise beim Einsatz in Zahnbürsten oder als Interdentalreiniger in einen Zahnzwischenraum eingeführt, sich in diesem aber nicht verklemmen können. Beim Herausziehen dehnt sich die Borste und kann sich zusätzlich noch aufdrillen.In a development of the invention it is provided that Monofilament or the monofilament made of an elastic plastic consist. In this way, the Bristle material produced bristles in the longitudinal direction stretch, which entails a reduction in their diameter brings so that, for example, when used in toothbrushes or as an interdental cleaner in an interdental space introduced, but do not get stuck in it can. When pulling out, the bristle expands and can also twist up.

Das erfindungsgemäß erzeugte Borstenmaterial ist mit besonderen Vorteilen bei einer Vielzahl von Bürsten einsetzbar. So sind die zwischen den auf der Oberfläche verlaufenden Wendeln vorhandenen vertieften Räume besonders dafür geeignet, den beim Bürsten gelösten Schmutz aufzunehmen und zu speichern und erst am Ende der Bürststrecke abzugeben. Diese vorteilhafte Wirkung kommt beispielsweise bei Teppichbürsten, Staubsaugerbürsten, Polierbürsten etc. zur Wirkung.The bristle material produced according to the invention is included special advantages with a variety of brushes applicable. So they are between those on the surface existing helixes in particular suitable for the dirt loosened during brushing record and save and only at the end of the brushing section to deliver. This beneficial effect is coming for example with carpet brushes, vacuum cleaner brushes, Polishing brushes etc. for effect.

Gleichermaßen können diese zwischen den Wendeln gebildeten Räume zur Aufnahme von Medien dienen, die zu applizieren sind. Dies ist beispielsweise bei Haarbürsten, Malerbürsten, Kosmetikbürsten etc. der Fall.Likewise, these can be formed between the coils Rooms are used to hold media to be applied are. This is for example with hairbrushes, Painter brushes, cosmetic brushes etc. the case.

Schließlich läßt sich die unterschiedliche Reinigungswirkung der Borstenenden und der Flanken der Wendeln in vielen Fällen vorteilhaft miteinander kombinieren. Dies trifft beispielsweise zu für Zahnbürsten, Massagebürsten, Besen, Kehrwalzen, Entrostungsbürsten etc. Auch können einzelne oder zu Bündeln zusammengefaßte spiralige Borsten in besonders vorteilhafter Weise als Interdentalreiniger verwendet werden, die durch Hin- und Herbewegung in den Zahnzwischenräumen eine weit bessere Reinigungswirkung entfalten, da ständig wechselnde Querschnitte zur Wirkung kommen. Selbst dann, wenn ein solcher Interdentalreiniger in engen Lücken verklemmt, wird er nicht abreißen, sondern kann durch Aufdrillen problemlos herausgezogen werden. Schließlich kann auch eine sehr schonende bis pflegende Behandlung erreicht werden, wenn der Wendelquerschnitt entsprechend verrundet ist.Finally, the different cleaning effects the bristle ends and the flanks of the spirals in in many cases, combine them advantageously. This applies for example to toothbrushes, massage brushes, Brooms, roller brushes, rust removal brushes etc. Also can single or bundled spiral bristles in a particularly advantageous manner as an interdental cleaner used by floating in a much better cleaning effect between the teeth unfold, because constantly changing cross sections for Come into effect. Even if such an interdental cleaner jammed in tight gaps, it will not tear off, but can easily by untwisting be pulled out. After all, one can be very gentle to caring treatment can be achieved if the spiral cross section is rounded accordingly.

Bei einem Interdentalreiniger ergeben sich weitere Vorteile, wenn er nur in einem Teilbereich seiner Länge verdrillt ist. Der unverdrillte Teilbereich besitzt geringere Querschnittsabmessungen und läßt sich somit leichter in einen Zahnzwischenraum einführen. Das Einführen kann noch weiter erleichtert werden, wenn der unverdrillte Teilbereich zumindest abschnittsweise einen beispielsweise durch Verpressen abgeflachten Querschnitt aufweist.With an interdental cleaner there are further advantages, if it was only in a portion of its length is twisted. The untwisted section has smaller cross-sectional dimensions and can therefore be easier to insert into an interdental space. Introducing can be further facilitated if the untwisted Subarea at least in sections for example, cross-section flattened by pressing having.

Um eine Bürste in ihrer Wirkung an vorgegebene Rahmenbedingungen anpassen zu können, lassen sich spiralige Borsten mit Borsten anderer Konfiguration verbinden und zusammen verarbeiten.About a brush in its effect on given framework conditions to be able to adapt, spiral Connect bristles to bristles of a different configuration and process together.

Claims (15)

  1. Method for the manufacture of spiral plastic bristles by extruding monofilaments, characterized in that a monofilament with a non-circular cross-section is extruded and is prestretched on removal, accompanied by a reduction of its cross-section, followed by further stretching, twisting to a spiral bristle material over at least part of its length and stabilization by heat shrinkage after twisting.
  2. Method according to claim 1, characterized in that, after further stretching and prior to twisting, the monofilament is prestabilized by heat shrinkage.
  3. Method according to claim 1, characterized in that the stabilization takes place by storing the wound-up, spiral bristle material.
  4. Method according to claim 1, characterized in that a monofilament with an oval or polygonal cross-section is extruded.
  5. Method according to claim 4, characterized in that a monofilament with a quadrangular, preferably square cross-section is extruded.
  6. Method according to claim 1 or 4, characterized in that a monofilament with a core and at least one axially parallel rib is extruded.
  7. Method according to claim 3 or 6, characterized in that the at least one rib or at least one edge of the polygonal cross-section is of a different colour to the monofilament core, in that different dyed plastics are coextruded.
  8. Method according to claim 6 or 7, characterized in that the core and the at least one rib or at least one edge of the polygonal cross-section are coextruded from different plastics.
  9. Method according to claim 1 or 4, characterized in that the monofilament is coextruded from a core member and a jacket surrounding the latter made from different plastics.
  10. Method for the manufacture of spiral bristles by extruding monofilaments, characterized in that at least two monofilaments are prestretched on removal, accompanied by a reduction of the cross-section thereof, followed by further stretching, twisting together to form a spiral bristle material and stabilization by heat shrinkage after twisting.
  11. Method according to claim 10, characterized in that, after further stretching, the monofilaments are prestabilized by heat shrinkage.
  12. Method according to claim 10 or 11, characterized in that stabilization takes place by storing the wound-up bristle material under an optionally elevated temperature.
  13. Method according to claim 1 or 10, characterized in that the monofilament or monofilaments are made from an elastic plastics material.
  14. Method according to claim 1 or 10, characterized in that the monofilament is twisted with at least two turns per cm.
  15. Method according to claim 14, characterized in that the monofilament is twisted with three to five turns per cm.
EP96931013A 1995-09-13 1996-09-04 Process for the manufacture of spiralled bristles Expired - Lifetime EP0874925B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19533816 1995-09-13
DE19533816A DE19533816A1 (en) 1995-09-13 1995-09-13 Process for the production of spiral bristles
PCT/EP1996/003874 WO1997010374A1 (en) 1995-09-13 1996-09-04 Process for the manufacture of spiralled bristles

Publications (2)

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EP0874925A1 EP0874925A1 (en) 1998-11-04
EP0874925B1 true EP0874925B1 (en) 1999-12-08

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US (1) US5985192A (en)
EP (1) EP0874925B1 (en)
JP (1) JP3792721B2 (en)
KR (1) KR100666766B1 (en)
CN (1) CN1077154C (en)
AR (1) AR003562A1 (en)
AT (1) ATE187506T1 (en)
AU (1) AU700069B2 (en)
BR (1) BR9610578A (en)
CA (1) CA2230799C (en)
CZ (1) CZ287818B6 (en)
DE (2) DE19533816A1 (en)
ES (1) ES2140130T3 (en)
GR (1) GR3032901T3 (en)
HU (1) HU220740B1 (en)
IL (1) IL123387A (en)
IN (1) IN188936B (en)
NO (1) NO310664B1 (en)
NZ (1) NZ330177A (en)
PL (1) PL182726B1 (en)
PT (1) PT874925E (en)
RO (1) RO119370B1 (en)
RU (1) RU2145367C1 (en)
SK (1) SK281340B6 (en)
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UA (1) UA51674C2 (en)
WO (1) WO1997010374A1 (en)
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US10477958B2 (en) 2013-12-12 2019-11-19 Colgate-Palmolive Company Multi-component bristle having components with different oral care additives, and oral care implement comprising the same
EP3068263B1 (en) 2013-12-12 2019-02-27 Colgate-Palmolive Company Multi-component bristle having components with different oral care additives, and oral care implement comprising the same
JP2016539729A (en) 2013-12-12 2016-12-22 コルゲート・パーモリブ・カンパニーＣｏｌｇａｔｅ−Ｐａｌｍｏｌｉｖｅ Ｃｏｍｐａｎｙ Spiral brush bristles with strand components containing different oral care additives, and oral care devices comprising the spiral bristles
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DE102013007870A1 (en) 2013-05-08 2014-11-13 Pedex Gmbh Monofilament of plastic and toothbrush bristle of a corresponding monofilament

Also Published As

Publication number Publication date
CZ70398A3 (en) 1998-06-17
RU2145367C1 (en) 2000-02-10
AU6986796A (en) 1997-04-01
HUP9901181A2 (en) 1999-08-30
WO1997010374A1 (en) 1997-03-20
HU220740B1 (en) 2002-05-28
IL123387A0 (en) 1998-09-24
MX9802011A (en) 1998-08-30
AU700069B2 (en) 1998-12-17
SK281340B6 (en) 2001-02-12
NO310664B1 (en) 2001-08-06
SK24998A3 (en) 1998-11-04
CN1209175A (en) 1999-02-24
CZ287818B6 (en) 2001-02-14
GR3032901T3 (en) 2000-07-31
EP0874925A1 (en) 1998-11-04
ZA967702B (en) 1997-03-25
PT874925E (en) 2000-05-31
BR9610578A (en) 1999-07-06
NO981084D0 (en) 1998-03-12
DE19533816A1 (en) 1997-03-20
AR003562A1 (en) 1998-08-05
IL123387A (en) 2002-03-10
NZ330177A (en) 1999-01-28
RO119370B1 (en) 2004-08-30
PL325522A1 (en) 1998-08-03
DE59603889D1 (en) 2000-01-13
CA2230799C (en) 2007-11-13
HUP9901181A3 (en) 2000-07-28
PL182726B1 (en) 2002-02-28
TW379262B (en) 2000-01-11
NO981084L (en) 1998-03-12
ATE187506T1 (en) 1999-12-15
KR19990044379A (en) 1999-06-25
US5985192A (en) 1999-11-16
IN188936B (en) 2002-11-23
CN1077154C (en) 2002-01-02
JP3792721B2 (en) 2006-07-05
CA2230799A1 (en) 1997-03-20
UA51674C2 (en) 2002-12-16
ES2140130T3 (en) 2000-02-16
TR199800456T1 (en) 1998-05-21
KR100666766B1 (en) 2007-05-17
JPH11511812A (en) 1999-10-12

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