EP0957711B1 - Borste für eine zahnbürste - Google Patents

Borste für eine zahnbürste Download PDF

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Publication number
EP0957711B1
EP0957711B1 EP97943890A EP97943890A EP0957711B1 EP 0957711 B1 EP0957711 B1 EP 0957711B1 EP 97943890 A EP97943890 A EP 97943890A EP 97943890 A EP97943890 A EP 97943890A EP 0957711 B1 EP0957711 B1 EP 0957711B1
Authority
EP
European Patent Office
Prior art keywords
bristle
filaments
approximately
toothbrush
mils
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97943890A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0957711A1 (de
Inventor
Rainer Hans
Georges Driesen
Armin Schwarz-Hartmann
Norbert Schaefer
Ahmet Cem Firatli
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.)
Braun GmbH
Original Assignee
Braun 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 Braun GmbH filed Critical Braun GmbH
Publication of EP0957711A1 publication Critical patent/EP0957711A1/de
Application granted granted Critical
Publication of EP0957711B1 publication Critical patent/EP0957711B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • 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
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2978—Surface characteristic

Definitions

  • the invention relates to a bristle for a toothbrush, in particular for a electric toothbrush, which is made of plastic and several, together connected filaments.
  • Such a bristle is known from German utility model 19 97 717. There is described a toothbrush that has a variety of bristles has, with each bristle several filaments approximately parallel to each other arranged and thermally welded together. In this way the cleaning area formed by the free ends of the bristles is increased and thus increases the cleaning effect of the toothbrush. On the other hand arise however, voids between the filaments caused by bacteria or other Germs can be colonized.
  • DE-PS 906444 describes a method for producing artificial bristles known, which consist of a plurality of individual filaments. These single filaments are glued together after exiting the spinnerets, the gluing is interrupted at intervals. After making the bond the bristle becomes individual bristles in the area of the non-glued areas cut, with the single bristle spliced at the tip.
  • This method is quite complex, since on the one hand the filaments are admitted with an adhesive Need to become. On the other hand, it turns out to be problematic Continuously interrupt gluing at specified intervals.
  • a brush with radially outward is on a hub attached bristles known.
  • Each of the bristles points in the middle a stiff soul with at least one fiber made of vibration damping Material is glued and wrapped helically so that only part the surface of the soul is surrounded by the fiber.
  • JP, A, 03289906 shows a bristle for a toothbrush made of several interconnected filaments that are wound or braided.
  • the object of the invention is to provide a bristle for a toothbrush mentioned type in such a way that a high cleaning effect is guaranteed cavities should be avoided.
  • the for the Tooth cleaning effective surface of the toothbrush increases and thereby the Improved teeth cleaning.
  • winding or braiding achieves that the surface of the bristles is structured, which is important when cleaning teeth can be used effectively. Both are particularly important beneficial in removing plaque from the tooth surface.
  • a free end is provided. This fanning out can be done by a Breaking the connection points of the individual filaments at the free end the bristle can be reached.
  • the free end of the Bristle individual thin tips, the number and diameter of the number and the diameter of the filaments of the bristle.
  • These thin tips can penetrate the interdental spaces of the teeth much easier and deeper and in this way improve the removal of plaque and overall teeth cleaning. Furthermore, due to the expansion the effective cleaning area for tooth cleaning is further enlarged, so that also in that the teeth cleaning is improved.
  • the filaments of the bristle have different diameters.
  • the mechanical properties for example the stiffness, can be varied or the fatigue or the resilience of the individual bristles and thus the toothbrush as a whole.
  • the diameter of the filaments also the winding or braiding of each Bristles and thus the structure of the surface of the bristles can be influenced. Both have a direct influence on the cleaning effect and in particular on the comfort of cleaning the toothbrush.
  • an approx central filament provided with a preferably higher stiffness, that of Filaments is surrounded with a preferably lower stiffness.
  • the central Filament is preferably used to stabilize the bristle during this central filament surrounding filaments preferably to obtain a high cleaning efficiency and high cleaning comfort are provided.
  • the Winding or braiding of the bristle periodically formed. This has advantages in With regard to the manufacture of the bristle and has a visually uniform appearance the bristle and thus the toothbrush.
  • the following values have been found to be: Particularly useful: 3 or 4 filaments per bristle used, the diameter of the individual filaments has a value between about 0.0762 mm and about 0.127 mm, and the winding or braiding a bristle repeats after about 1.0 mm to about 3.0 mm.
  • the filaments are so chemically welded together that in the area of Fanning a tear strength or a peel force of the filaments of about 0.1N to 0.15N, preferably 0.125N.
  • a tear strength or a peel force of the filaments of about 0.1N to 0.15N, preferably 0.125N.
  • an amorphous one can be found in the center of the inner core Structure of the filament or bristle material may be present.
  • the cross-sectional area with amorphous structure is about 10% up to 50%, in particular 20% to 30% of the total cross-sectional area of the Bristle.
  • the remaining cross-sectional area accordingly has an im essential crystalline structure.
  • the filaments are wound bristle essentially without torsional stress or braided and chemically together by exposure to solvents welded. After the winding or braiding process, a connection is made of filaments due to chemical agents. This way it becomes permanent Connection between the individual filaments achieved, the mechanical Properties of the filaments are essentially retained. It arises a filament composite that forms the bristle. Furthermore, by dissolving closing the filaments in a solvent from those still present Cavities guaranteed safely.
  • the fixation mentioned also represents a simple one and well controllable way, the coiled or braided Process filaments and combine them into bristles.
  • the filaments during chemical welding with tensile stress from about 6MPa to 20MPa, preferably 13MPa. This is ensured that the wound or torsional stress-free braided filament during chemical welding with sufficient radially inward force are against each other, this radially inward force by means of the tensile stress acting on the filaments is produced.
  • the invention Bristles in the inner field of a preferably electrically driven one Round head toothbrush used.
  • a bristle 1 is shown in FIGS. 1a to 1c, which consists of three filaments 2, 3, 4 is composed.
  • the filaments 2, 3, 4 consist of the same plastic and all have the same diameter.
  • the filaments 2, 3, 4 are braided, which among other things from the cross sections of Figures 1b and 1c can be seen. The braiding is carried out evenly, so that the braiding and thus the structure of the surface of the bristle 1 is repeated periodically. This is identified in FIG. 1 a by the reference number 5.
  • FIGS. 2a and 2b show a bristle 6 which consists of four filaments 7, 8, 9, 10 is composed.
  • the filament 7 is arranged centrally and is from the other filaments 8, 9, 10 surround.
  • the filament 7 has a larger one Diameter on than the filaments 8, 9, 10.All filaments 7, 8, 9, 10 consist of plastic, the filaments 8, 9, 10 of the same plastic are made, while the central filament 7 from another Plastic can exist.
  • the central filament 7 preferably has a high rigidity, while the surrounding filaments 8, 9, 10 have a lower Possess rigidity.
  • the different stiffnesses can vary different diameters and / or different plastics the filaments result, for example, from softer or harder plastics.
  • the central filament 7 is wrapped by the other filaments 8, 9, 10.
  • the Winding is carried out evenly, so that the winding and thus the Structure of the surface of the bristle 6 is repeated periodically. This is in the figure 2a marked with the reference number 11.
  • a bristle 12 which consists of three filaments 13, 14, 15 is composed.
  • the filaments 13, 14, 15 consist of the same Plastic and all have the same diameter.
  • the filaments 13, 14, 15 are wound. The winding is even, so that the Winding and thus the structure of the surface of the bristle 12 is repeated periodically. This is identified in FIG. 3a with the reference number 16.
  • the filaments mentioned in FIGS. 1a to 1c, 2a and 2b and 3a and 3b 2, 3, 4, 7, 8, 9, 10, 13, 14, 15 of the bristles 1, 6, 12 can be made of polyamide, Polyester or polypropylene.
  • the diameter of the above Filaments can be between about 0.0762 mm (3 mil) and about 0.127 mm (5 mil) be.
  • the period 5, 11, 16 of the braiding or winding of the above Filaments can be between about 1.0 mm and about 3.0 mm. How else the individual filaments 2, 3, 4, 7, 8, 9, 10, 13, 14, 15 of the bristles 1, 6, 12 firmly connected.
  • FIG. 4 shows a free end 17 of the bristle 12 of FIGS. 3a and 3b.
  • the free end 17 has a splice 18. This means that the free ends 19, 20, 21 of the filaments 13, 14, 15 are not firmly together are connected, but as individual tips from the free end 17 of the bristle 12 stick out.
  • the length of the splice 18 is chosen such that the protruding ones Tips are suitable in a user's interdental spaces penetrate.
  • the filaments 2, 3, 4, 7, 8, 9, 10, 13, 14, 15 braided or wound or in general stranded. It is possible to wind or braid with already stretched filaments 2, 3, 4, 7, 8, 9, 10, 13, 14, 15 perform that already have the desired mechanical properties.
  • the braided or wound filaments 2, 3, 4, 7, 8, 9, 10, 13, 14, 15 dipped in a solvent and fixed there by dissolving.
  • the Residence time in the solvent is from about 5 seconds to about 50 s.
  • a solvent e.g. for filaments made of polyamide, can Phenol, M-cresol or formic acid can be used.
  • Highly concentrated formic acid has one in coated filaments Time period between about 20 s and about 30 s was found to be advantageous.
  • the solvent is mixed with water or other suitable media neutralized or the excess solvent removed. Then they will Filaments 2, 3, 4, 7, 8, 9, 10, 13, 14, 15 dried. Then the resulting one Bristles 1, 6, 12 can be further processed in a known manner.
  • the free end 17 mechanically processed.
  • This Mechanical processing can for example be a grinding process or the like or be another blow treatment of the free end 17.
  • the mechanical processing is the chemical Fixation caused firm connection of the filaments 13, 14, 15 of the bristle 12 broken open again in the region of the free end 17 of the bristle 12. It this creates the free ends 19, 20, 21 of the filaments 13, 14, 15, wherein the length of the free ends 19, 20, 21 and thus the length of the splice 18th depends on the degree of mechanical processing of the free end 17 the bristle 12.
  • the chemical fixation of the filaments 13, 14, 15 is thereby carried out in such a way that on the one hand a breaking of the solid connection on free end 17 of the bristle 12 is possible, but that on the other hand by the normal Using the bristle does not break the tight connection of the filaments 13, 14, 15 is possible.
  • the bristle 12 due to the chemical bonding the filaments 13, 14, 15 made of partially crystalline material has a special structure in cross-section.
  • An outer jacket 22 of the bristle 12 has a substantially amorphous structure that is indicative of the dissolution of the Outer jacket of the individual filaments 13, 14, 15 due to the solvent is.
  • the inner core 23 of the bristle 12 essentially has one crystalline structure, this inner core 23 essentially by the undissolved cores of the filaments 13, 14, 15 is formed.
  • At the center 24 of the Inner core can be a small area with an amorphous cross section Structure. So chemically welded together Filaments 13, 14, 15 have about 10% to 50%, in particular 20% to 30% of the total cross-sectional area an amorphous structure. Accordingly about 90% to 50%, in particular 80% to 70% of the cross-sectional area in the essentially crystalline.
  • the filaments after winding, braiding or stranding in almost or essentially torsion stress-free Condition. This is ensured by the fact that each of the filaments 2, 3, 4; 7, 8, 9, 10; 13, 14, 15 during braiding, wrapping or stranding in the opposite sense to that required for roping, braiding or winding Rotation is rotated around its own axis, so that torsional stresses in the are substantially avoided. There is therefore a knot of the filament composite chemical welding and after stranding, braiding or winding, locked out. This essentially torsion-free stress state leaves prove themselves after welding using microtome sections if these are analyzed under polarized light.
  • the fixing time is like this chosen that 10% to 50%, preferably 20% to 35% of the cross-sectional area of the Individual filaments are loosened.
  • the fixing times are for filaments 2, 3, 4; 7, 8, 9, 10; 13, 14, 15 without surface coating between 5 sec and 20 sec, or at about 10 sec. If filaments with a silicone coating are used, fix times between 20 sec and 40 sec, preferably 25 sec to 30 sec into consideration.
  • connection strength can about the measurement of the peeling forces and the wear behavior of the bristle 1, 6, 12 can be determined.
  • the filaments are made of polyamide (PA6.12) and have a diameter from about 0.076 mm to 0.126 mm.
  • a connection is made under chemical welding of the filaments together by loosening the surface of the filaments understood by means of a chemical solvent.
  • the surface of the filaments by action softened by heat.
  • the bristles 1, 6, 12 described in FIGS. 1a to 1c, 2a and 2b and 3a and 3b are intended for use in toothbrushes, in particular for Use in electric toothbrushes.
  • the bristles 1, 6, 12 described are particularly advantageous for use in the inner field of a round-head toothbrush.

Landscapes

  • Brushes (AREA)
EP97943890A 1996-10-02 1997-09-24 Borste für eine zahnbürste Expired - Lifetime EP0957711B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19640853A DE19640853A1 (de) 1996-10-02 1996-10-02 Borste für eine Zahnbürste
DE19640853 1996-10-02
PCT/EP1997/005221 WO1998014090A1 (de) 1996-10-02 1997-09-24 Borste für eine zahnbürste

Publications (2)

Publication Number Publication Date
EP0957711A1 EP0957711A1 (de) 1999-11-24
EP0957711B1 true EP0957711B1 (de) 2002-01-09

Family

ID=7807796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97943890A Expired - Lifetime EP0957711B1 (de) 1996-10-02 1997-09-24 Borste für eine zahnbürste

Country Status (10)

Country Link
US (1) US6141819A (pt)
EP (1) EP0957711B1 (pt)
JP (1) JP2001501511A (pt)
CN (1) CN1107473C (pt)
AT (1) ATE211628T1 (pt)
AU (1) AU708947B2 (pt)
BR (1) BR9712195A (pt)
DE (2) DE19640853A1 (pt)
RU (1) RU2175518C2 (pt)
WO (1) WO1998014090A1 (pt)

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DE19841974A1 (de) * 1998-09-14 2000-03-23 Braun Gmbh Borste für eine Zahnbürste, insbesondere für eine elektrische Zahnbürste, sowie Verfahren zu deren Herstellung
USD456998S1 (en) 1999-01-25 2002-05-14 Lawrence A. Blaustein Head portion of an electric toothbrush
DE19932368A1 (de) 1999-07-13 2001-02-08 Pedex & Co Gmbh Verfahren zur Herstellung von mehrschichtigem Borstenmaterial, mehrschichtige Borste und deren Verwendung
DE19960173A1 (de) * 1999-12-14 2001-06-28 Geka Brush Georg Karl Gmbh Mascara-Bürstchen
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USD499884S1 (en) 2002-03-15 2004-12-21 The Procter & Gamble Company Electric toothbrush
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US20040107974A1 (en) * 2002-07-03 2004-06-10 The Bridgeport Metal Goods Manufacturing Company Cosmetics and mascara brushes with multi-fiber bristles
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US7320691B2 (en) * 2003-01-15 2008-01-22 Pacific Bioscience Laboratories, Inc. Apparatus and method for acoustic/mechanical treatment of early stage acne
JP5376827B2 (ja) * 2008-04-30 2013-12-25 アスリートＦａ株式会社 ボール搭載装置およびボール搭載方法
EP2198744B1 (de) * 2008-12-19 2011-11-09 Braun GmbH Borstenbüschel und Zahnbürste mit Borstenbüschel
JP6027017B2 (ja) * 2010-12-20 2016-11-16 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 効果的な洗浄のための毛特性を持つ口腔衛生機器
AU2013407533B2 (en) 2013-12-12 2017-01-12 Colgate-Palmolive Company Multi-component bristle having components with different oral care additives, and oral care implement comprising the same
WO2015085528A1 (en) 2013-12-12 2015-06-18 Colgate-Palmolive Company Spiral bristle having strand components with different oral care additives, and oral care implement comprising the same
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
CN104825242A (zh) * 2015-05-16 2015-08-12 张平洲 一种牙刷
CN107835649B (zh) 2015-07-07 2021-03-23 高露洁-棕榄公司 口腔护理器具和用于口腔护理器具的单丝刷毛
US11089861B2 (en) * 2015-09-08 2021-08-17 Colgate-Palmolive Company Oral care implement
RU2691915C1 (ru) * 2015-12-14 2019-06-18 Колгейт-Палмолив Компани Приспособление для ухода за полостью рта и спиральная щетинка для применения с данным приспособлением
US10278485B2 (en) 2016-09-01 2019-05-07 Colgate-Palmolive Company Oral care implement and filament therefor
USD830699S1 (en) 2017-02-03 2018-10-16 Harria Investment Group Ltd. Brush head for an electric toothbrush
USD838990S1 (en) 2017-05-11 2019-01-29 Harria Investment Group Ltd Brush head for an electric toothbrush
CN109223230B (zh) 2017-07-11 2020-09-25 Js控股股份有限公司 用于电动牙刷的可移除的刷头
US11206918B2 (en) * 2018-03-25 2021-12-28 Parallel Capture Holdings Inc. Interdental brush with nylon yarn strands
CN108991715A (zh) * 2018-06-28 2018-12-14 安徽振达刷业有限公司 一种刷丝自动嵌入系统

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Also Published As

Publication number Publication date
ATE211628T1 (de) 2002-01-15
US6141819A (en) 2000-11-07
JP2001501511A (ja) 2001-02-06
DE19640853A1 (de) 1998-04-16
DE59706142D1 (de) 2002-02-28
EP0957711A1 (de) 1999-11-24
WO1998014090A1 (de) 1998-04-09
AU4556697A (en) 1998-04-24
AU708947B2 (en) 1999-08-19
CN1232373A (zh) 1999-10-20
BR9712195A (pt) 2000-01-25
CN1107473C (zh) 2003-05-07
RU2175518C2 (ru) 2001-11-10

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