EP1173082B1 - Verfahren zur bearbeitung von borsten - Google Patents

Verfahren zur bearbeitung von borsten Download PDF

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Publication number
EP1173082B1
EP1173082B1 EP00922627A EP00922627A EP1173082B1 EP 1173082 B1 EP1173082 B1 EP 1173082B1 EP 00922627 A EP00922627 A EP 00922627A EP 00922627 A EP00922627 A EP 00922627A EP 1173082 B1 EP1173082 B1 EP 1173082B1
Authority
EP
European Patent Office
Prior art keywords
bristles
bristle
split
forces
mechanical
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
EP00922627A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1173082A1 (de
Inventor
Georg Weihrauch
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.)
Pedex GmbH
Original Assignee
Pedex 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 Pedex GmbH filed Critical Pedex GmbH
Publication of EP1173082A1 publication Critical patent/EP1173082A1/de
Application granted granted Critical
Publication of EP1173082B1 publication Critical patent/EP1173082B1/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
    • A46D1/04—Preparing bristles
    • A46D1/05—Splitting; Pointing
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0292—Bristles having split ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles

Definitions

  • the invention relates to a method for processing bristles according to the preamble of claim 1.
  • Bristles for bristles of any kind eg brushes for. Body and dental care, household brushes, technical brushes, brushes and the like., are now produced mainly from polymers by the polymer melt is extruded into continuous monofilaments and the monofilaments are then stretched and optionally stabilized. From such monofilaments, the bristles are then obtained by cutting to an appropriate length.
  • the monofilaments as the bristles have a circular cross-section, for special applications, however, bristles with other cross-section, for example, an oval or polygonal cross-section known, in which case the monofilament is extruded with a corresponding profile.
  • bristles which have a fibrous, in particular fine-fiber structure at their use-side end. This applies, for example, to such bristles intended for applying media to surfaces or the like, e.g. Brush. Even if a fluffy structure is desired, the bristle must be fine-grained.
  • dental medicine according to which conventional bristles of toothbrushes are inadequate in their cleaning effect, since they do not penetrate into the fine fissures of the tooth surface, but slide over them. The same applies to the cleaning effect in the interdental space.
  • the protruding slotted bristles are relatively thin, there is a risk that form mop-like heads after a short period of use of the slotted bristle ends, which make a brushing effect impossible.
  • the very thin fissures in the chewing surfaces of the teeth and also the interdental spaces can not be achieved in this way.
  • bristles have also been proposed that consist of a multiplicity of thin fibers and a sheath enveloping the fibers ( WO 97/25902 ; DE 9 408 268 U1 ). Coat and fibers can also be coextruded as filaments. After cutting to the desired bristle length of the jacket is at the utility end of the bristle by mechanical Machining or cutting removed so that the fibers are exposed on a short length. Apart from the elaborate production of such bristles and they are only limited use. Of particular disadvantage is the sudden change in the bending behavior at the transition from the fibers to the jacket. If such bristles are used on applicators, the surface may be damaged due to the hard transition.
  • the fibers are practically limp so that they can not or not sufficiently penetrate into deeper wells, interdental spaces or the like.
  • the fibers also break off easily when subjected to continuous stress at the edge of the jacket.
  • the US-A 3,013,364 shows a method in which partial cross-sections are formed by means of a grindstone at the ends of the bristles.
  • the invention has for its object to provide a method for the mechanical processing of bristles, with the bristles are independently of their arrangement in a simple manner split into defined partial cross-sections.
  • the mechanical forces for splitting the fissile bristles from different directions are applied relative to the longitudinal axis of the bristles.
  • the mechanical forces are applied by means of at least one blunt tool, for example a striking tool.
  • the method according to the invention is preferably used in bristle fields which comprise both fissile and non-fissile bristles.
  • the fissile bristles in particular at their bristle ends, can be completely subdivided into their partial cross-sections in a relatively short time, i. disassemble into fingers.
  • the blunt tool hits the bristles that are not to be split, they are deflected only laterally without being damaged or cut. In this way, it is possible to dispense with a separation of the bristles to be split and the bristles which can not be split, and the splitting can take place in one work step.
  • the method can be applied to bristles which are already mounted on a bristle carrier, but it is also possible to apply the method to bristles which are packed together into bundles of bristles and, as such, fed for later further processing. truncated, for example, rounded blades act.
  • the applied impact energy overcomes the secondary binding forces of the bristles so that they are divided into multiple fingers.
  • the process is independent of the bristle configuration, i. these can be arranged either in groups, in bundles, as single bristles or in a combination of these types. Since the bristles to be cleaved are reached and split with high precision, while the bristles not to be split remain undamaged, a predetermined bristle field with a defined configuration between split and uncleaved bristles can be achieved with high precision by the method according to the invention. Since a prior separation, separation or covering of bristles is not necessary, the process can also be carried out in a simple and cost-effective manner.
  • the mechanical forces are applied intermittently, as is the case with rotary flywheels.
  • the bristles are aligned substantially parallel to each other, wherein the mechanical forces are applied substantially radially to the longitudinal axis of the respective bristle.
  • the application of the mechanical forces from different directions relative to the longitudinal axis of the bristles can be done in a possible embodiment of the invention in that the tool is changed in position relative to the bristles to be processed by, for example the tool rotates during machining about the longitudinal axis of the bristle or is at least adjusted between different positions about the longitudinal axis of the bristles.
  • the bristles may also be rotated about an axis extending parallel to their longitudinal axis, whereby the tool acts on the bristles from different outer sides.
  • the bristle ends are split by the application of mechanical forces in the partial cross sections or fingers, so that the mechanical forces are applied in the region of the free bristle end. It has proven to be particularly effective when the mechanical forces are applied in different axial sections of the bristles, whereby the splitting is supported.
  • a plurality of tools distributed over the circumference of the bristles are provided, which have a different orientation relative to the bristles to be processed and with which the splitting of the bristles to be split can be achieved quickly and reliably.
  • bristles are used which can be split into previously defined partial cross sections. This can be achieved by forming the cleavable bristles of two coextruded polymers in a geometrically regular arrangement with boundary layers extending substantially in the axial direction, in which reduced secondary binding forces prevail.
  • the monofilament has a matrix of the physical and chemical properties of the bristle-determining polymer and that the second polymer is incorporated in the form of thin layers in the matrix.
  • Such bristles and monofilaments are from the unpublished international patent application PCT / EP 98/06954 ( ⁇ WO-A-9924649 ) of the applicant, reference being made to the said international patent application in order to avoid repetition with regard to the details. It can be provided in particular that the individual fingers consist of polymer blends, which can thus be slit again in a subsequent step in a known manner by means of rotating blades.
  • monofilaments or bristles can also be cleaved with the process according to the invention, which consist of subsequently combined extruded partial streams and can thus be split at the interfaces.
  • bristles can be split, which consist of several partial cross-sections, which are interconnected via webs, wherein the webs are broken by the application of mechanical forces or the impact energy.
  • the bristle ends before, during or after the application of the mechanical forces for splitting the bristles to be split are subjected to further processing, which may in particular be a mechanical and / or thermal rounding of the bristle ends.
  • the bristle ends may also be butted or roughened.
  • the further processing or rounding of the bristles can take place in the same axial plane of the bristles as the application of the mechanical splitting forces or else in a different plane.
  • This advantageous embodiment can be achieved both when the ends of all bristles lie in a plane or envelope surface, as well as at different levels of the ends of the fissile and the non-fissile bristles.
  • the further processing of the bristles and in particular their rounding and the application of the mechanical splitting forces with the same tool or the same tools must thus be suitable on the one hand to round the ends of the bristles, and on the other hand intermittently exert impact forces on the bristles to be split.
  • a corresponding tool is given for example by a superficially strong and preferably regularly profiled grinding wheel.
  • a bristle product may consist of a bristle carrier and braids fastened thereon, wherein at least some of the bristles are split into a plurality of separate partial cross sections or fingers by the action of mechanical forces in at least a portion of their length according to the aforementioned method.
  • all bristles of the bristle lining of the bristle carrier can be processed and split accordingly, but it is also possible to provide the bristles to be split only in a portion of the bristle trim.
  • the split and the uncleaved bristles or bristle elements may be arranged alternately side by side or may be arranged between fissile bristles or bristle elements each non-fissile bristles or bristle elements.
  • the bristle elements can they are single bristles, bristle bundles or bristle zones or combinations thereof. Within the bristle bundles or bristle zones, in turn, an alternating arrangement of split and uncleaved bristles may be provided.
  • the non-fissile bristles define spacings between the split bristles and also serve to support them, wherein the split ends of the split bristles in use of the brush or Brstenware due to the action of the brushing forces do not interfere with each other and in particular not with each other in a mop-like configuration can interlock.
  • the ends of the split bristles and the ends of the unsplit bristles may be in the same envelope surface or in different envelope surfaces or planes.
  • the individual fingers of the split bristles can be subdivided again by slitting into partial cross sections.
  • FIGS. 1A and 1B A first embodiment of a device for carrying out the method according to the invention is shown in FIGS. 1A and 1B.
  • a toothbrush 10 is shown by way of example as brushware, which has a bristle carrier 11, which at its front head with a bristle field 20 of a plurality of vertically upwardly projecting, aligned substantially parallel Bristles 12 is provided.
  • the bristles 12 can be combined into bundles and / or also be provided as single bristles.
  • the impact device 13 By means of a rotating impact device 13, an external mechanical force can be applied to the free ends of the bristles 12.
  • the impact device 13 has a substantially perpendicular to the longitudinal axis of the bristles 12 extending shaft 14 on which a plurality of impact disks 16 are mounted parallel to each other, each having two diametrically arranged sickle-shaped flywheel 15 which are truncated and rounded, for example, and no to the bristles 12 Cutting, but only a percussion effect.
  • the shaft 14 together with the impact discs 16 is rotationally driven in a manner not shown in the direction of the arrows D.
  • the impact device 13 is guided in the direction of R1 over the bristle field 20 formed by the bristles 12, that the rotating impact blades 15 exert on the free ends of the bristles 12 has a substantially radial impact action and thus the bristles 12 at their free ends in several separate Split partial sections or fingers as far as the bristles consist of a fissile material.
  • the impact device 13 is guided not only in the one direction R1 over the bristle field 20, but in this embodiment, eight directions of action R1 aligned by 45 ° about a vertical axis, ie parallel to the longitudinal axis of the bristles 12 to R8 provided, in which the impact device 13 acts on the bristles 12.
  • the different effective directions R1 to R8 can be achieved by changing the impact tool in its position relative to the bristles, by being adjusted about a vertical axis parallel to the longitudinal axes of the bristles.
  • the brush 10 can also be rotated about a vertical axis running parallel to the longitudinal axes of the bristles.
  • FIGs 2A and 2B show a development of the device according to Figures 1A and 1B, wherein in addition to the impact device 13 is provided a rotating about a vertical axis grinding device 17 which has a substantially parallel to the surface of the bristle field 20 extending grinding plate 18 which underside with an abrasive coating 19 is provided.
  • the grinding device can be adjusted in the vertical direction according to the arrow V such that the abrasive coating 19 comes into contact with the free ends of the bristles 12 of the bristle facing 20 and rounds them.
  • the location of the work plane A i. the extent to which the grinding tool 17 is lowered onto the bristle field 20 is adjustable.
  • the impact device 13 acts up to a working plane B, ie a predetermined distance from the free end of the bristles on this.
  • the processing planes A and B can - as shown in Figure 2A - from each other Alternatively, however, it is also possible that the processing levels coincide.
  • FIGS. 3A and 3B show a device with which the splitting and the rounding of the bristle ends can take place simultaneously.
  • the grinding tool 17 is provided on the underside of its grinding plate 18 with an abrasive coating 19 'which has a pronounced superficial profile, wherein a plurality of radially projecting ribs is provided in the embodiment shown (see FIG. 4).
  • the grinding tool 17 is lowered vertically up to a working plane B and then guided over the surface of the bristle field 20 from different radial directions, wherein the grinding surface 19 'on the one hand causes a rounding of the free ends of the bristles 12 and the strong structuring of the grinding surface 19' on the Borons 12 radially from the outside exerts mechanical impact forces, which splits the fissile bristles of the bristle trim at its free end.
  • Figures 5A and 5B show a schematic representation of a bristle trim, wherein the free upper ends of the bristles 12 are split to a predetermined height in each case five fingers 21.
  • all bristles are on split at their upper end, with the fingers 21 adjacent bristles overlap or only to a very small extent.
  • the ends of the fingers are spread apart by the brushing forces in use to the extent that interactions can occur between the fingers of adjacent bristles 12, as shown in Figures 6A and 6B. In order to avoid such interactions, according to the exemplary embodiment in FIGS.
  • At least one non-fissile bristle 22 is arranged between the fissile bristles 12, so that the fissile bristles 12 are at a greater mutual distance.
  • the non-fissile bristles 22 lying between the fissile bristles 12 moreover exert a lateral support effect on the fissile bristles 12.
  • Fig. 9 shows a modification in which the uncleaved bristles 22 extend only to about half the height of the fingers 21 of the split bristles 22, ie lie with their upper ends in a plane which is below the plane or envelope surface of the free ends of the split Bristles 12 is located.
  • the brushing action can be metered by the size of the applied brushing force become.
  • the fine fingers of the split bristles come into action
  • the generally harder ends of the intermediate, uncleaved bristles 22 additionally come into action.
  • the fingers 21 of the split bristles 12 spread apart in use, but do not engage with each other due to the intervening uncleaved bristles 22 and the resulting mutual distance (Fig. 10).

Landscapes

  • Brushes (AREA)
  • Road Paving Structures (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
EP00922627A 1999-04-27 2000-04-12 Verfahren zur bearbeitung von borsten Expired - Lifetime EP1173082B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19918959 1999-04-27
DE19918959A DE19918959A1 (de) 1999-04-27 1999-04-27 Verfahren zur Bearbeitung von Borsten und Borstenwaren mit solchen Borsten
PCT/EP2000/003250 WO2000064308A1 (de) 1999-04-27 2000-04-12 Verfahren zur bearbeitung von borsten und borstenwaren mit solchen borsten

Publications (2)

Publication Number Publication Date
EP1173082A1 EP1173082A1 (de) 2002-01-23
EP1173082B1 true EP1173082B1 (de) 2007-10-03

Family

ID=7905926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00922627A Expired - Lifetime EP1173082B1 (de) 1999-04-27 2000-04-12 Verfahren zur bearbeitung von borsten

Country Status (19)

Country Link
US (1) US6773076B1 (xx)
EP (1) EP1173082B1 (xx)
JP (1) JP2002541956A (xx)
KR (1) KR20020005013A (xx)
CN (1) CN1349390A (xx)
AR (1) AR023596A1 (xx)
AT (1) ATE374545T1 (xx)
AU (1) AU760522B2 (xx)
BR (1) BR0010073A (xx)
CA (1) CA2369902A1 (xx)
CZ (1) CZ20013838A3 (xx)
DE (2) DE19918959A1 (xx)
HU (1) HUP0201115A2 (xx)
NO (1) NO20015267L (xx)
PL (1) PL194726B1 (xx)
TR (1) TR200103066T2 (xx)
TW (1) TW427889B (xx)
WO (1) WO2000064308A1 (xx)
ZA (1) ZA200107668B (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7886397B2 (en) * 2003-03-03 2011-02-15 L'oreal S.A. Applicator and application device including the applicator
DE102012023122B4 (de) * 2012-11-27 2023-09-28 Zahoransky Ag Vorrichtung zur Nachbearbeitung von Borstenbündeln
CN111297028B (zh) * 2018-12-11 2024-01-05 朱鹏飞 刷具的梳刷面结构
US11490721B2 (en) 2019-12-06 2022-11-08 Peng-Fei Chu Bristle carrier of hairbrush

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB750509A (en) * 1953-07-10 1956-06-20 Raymond Lafond Sharpened and frayed artificial fibres for brush bristles, their process of manufacture and a machine for carrying it out
US2812530A (en) * 1955-06-28 1957-11-12 Mack Molding Company Inc Flagged bristle and brush made from same
US3013364A (en) * 1959-05-29 1961-12-19 Hanlon And Goodman Company Apparatus for roughening and spurring artificial filaments
US3233943A (en) 1962-11-02 1966-02-08 Carlson Tool & Machine Company Brush trimmer
DE1175199B (de) * 1963-11-22 1964-08-06 Baer Maschf Josef Verfahren zum Aufspalten der Enden von vorwiegend synthetischen Fasern und Borsten fuer die Buersten- und Pinselfabrikation
US3295156A (en) * 1965-04-14 1967-01-03 Colgate Palmolive Co Toothbrush
DE1997717U (de) * 1968-02-07 1968-12-05 Best G M B H Dr Buerste
US4756044A (en) * 1987-01-27 1988-07-12 Clark Gaylord J Tire brush
DE4425231B4 (de) * 1993-09-06 2005-07-07 Anton Zahoransky Gmbh & Co. Verfahren und Vorrichtung zum Profilieren von Borstenfeldern
DE4339040A1 (de) * 1993-11-16 1995-05-18 Schiffer Fa M & C Verfahren zur Herstellung einer Zahnbürste
DE9408268U1 (de) * 1994-05-19 1994-07-14 Seever, Wieland, 29229 Celle Zahnbürstenkopf
DE4441985A1 (de) * 1994-11-25 1996-05-30 Zahoransky Anton Gmbh & Co Verfahren und Vorrichtung zum Herstellen von Bürsten und danach hergestellte Bürste
BE1009283A3 (nl) * 1995-04-05 1997-01-07 Boucherie Nv G B Werkwijze en inrichting voor het bewerken van borstels.
DE19528834B4 (de) * 1995-08-05 2008-10-30 Anton Zahoransky Gmbh & Co. Verfahren und Vorrichtung zum Profilieren und Nachbearbeiten von Borstenfeldern
CH690118A5 (de) * 1996-01-19 2000-05-15 Trisa Buerstenfabrik Ag Borsten aus Kunststoff für Zahnbürsten.
US5791740A (en) * 1996-03-12 1998-08-11 John O. Butler Company Interdental brushes having roughened, tapered and rounded bristle ends and method of making the same
DE19728493A1 (de) * 1996-07-06 1998-02-12 Zahoransky Anton Gmbh & Co Vorrichtung und Verfahren zum Bearbeiten von Teilbereichen eines Borstenfeldes von Bürsten
DE19640863B4 (de) 1996-10-04 2007-02-08 Stanzwerk Wetter Sichelschmidt Gmbh & Co. Kg Beschlagsystem für ein Sitz- und Liegemöbel
JP2002512540A (ja) * 1997-03-06 2002-04-23 スミスクライン・ビーチャム・コンシューマー・ヘルスケア・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング 歯ブラシ
AU2680197A (en) * 1997-04-24 1998-11-13 E.I. Du Pont De Nemours And Company Monofilaments with split ends
DE29713087U1 (de) * 1997-07-23 1997-09-18 Anton Zahoransky GmbH & Co., 79674 Todtnau Vorrichtung zum Schleifen von Borstenenden von Bürsten
DE19748733A1 (de) * 1997-11-05 1999-05-06 Pedex & Co Gmbh Monofil zur Herstellung von Borsten und Verfahren zur Herstellung von Borsten aus solchen Monofilen

Also Published As

Publication number Publication date
US6773076B1 (en) 2004-08-10
DE50014693D1 (de) 2007-11-15
CA2369902A1 (en) 2000-11-02
NO20015267D0 (no) 2001-10-26
CZ20013838A3 (cs) 2002-06-12
TR200103066T2 (tr) 2002-11-21
AU4295000A (en) 2000-11-10
BR0010073A (pt) 2003-07-08
WO2000064308A1 (de) 2000-11-02
AR023596A1 (es) 2002-09-04
PL194726B1 (pl) 2007-06-29
DE19918959A1 (de) 2000-11-02
TW427889B (en) 2001-04-01
HUP0201115A2 (en) 2002-09-28
JP2002541956A (ja) 2002-12-10
CN1349390A (zh) 2002-05-15
NO20015267L (no) 2001-10-26
EP1173082A1 (de) 2002-01-23
KR20020005013A (ko) 2002-01-16
ATE374545T1 (de) 2007-10-15
ZA200107668B (en) 2002-09-18
PL351597A1 (en) 2003-05-05
AU760522B2 (en) 2003-05-15

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