EP1912532B2 - Toothbrush comprising inclined and pointed bristles - Google Patents

Toothbrush comprising inclined and pointed bristles Download PDF

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Publication number
EP1912532B2
EP1912532B2 EP06761256A EP06761256A EP1912532B2 EP 1912532 B2 EP1912532 B2 EP 1912532B2 EP 06761256 A EP06761256 A EP 06761256A EP 06761256 A EP06761256 A EP 06761256A EP 1912532 B2 EP1912532 B2 EP 1912532B2
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EP
European Patent Office
Prior art keywords
tufts
row
bristles
brush head
distance
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EP06761256A
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German (de)
French (fr)
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EP1912532B8 (en
EP1912532B1 (en
EP1912532A1 (en
Inventor
Christine Garbers
André BRUNELLA
Peter Gross
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Gaba International Holding AG
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Gaba International AG
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Application filed by Gaba International AG filed Critical Gaba International AG
Priority to SI200630614T priority Critical patent/SI1912532T2/en
Priority to PL06761256T priority patent/PL1912532T5/en
Publication of EP1912532A1 publication Critical patent/EP1912532A1/en
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Publication of EP1912532B1 publication Critical patent/EP1912532B1/en
Publication of EP1912532B2 publication Critical patent/EP1912532B2/en
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    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles

Definitions

  • the present invention relates to brush heads for toothbrushes in which a part of the tufts are tilted.
  • Toothbrushes with a mixed stocking perpendicular to the bristle carrier towering tufts on the one hand and inclined, cross-shaped x-shaped tufts are from the EP-A-0 885 573 known.
  • the Applicant of the present application sells three toothbrushes of this type in Europe under the names Elmex Inter X, Elmex Inter X sensitive and Elmex Inter X junior. These toothbrushes are distinguished from a brush with exclusively vertical or exclusively x-shaped crossed tufts by a good cleaning performance both in the tooth surfaces and in the interdental spaces.
  • toothbrushes after their completion whether with vertical tufts, with x-shaped tufts or with the above-mentioned mixed stocking, usually trimmed to a uniform height within a tuft. If desired, the trimmed bristle ends are then mechanically rounded to reduce the risk of injury to the gums.
  • FR 683,311 discloses a toothbrush having rows of vertical tufts and rows of sloping tufts whose ends cross each other in pairs so that the ends form a single active area.
  • JP 2004-129683 A discloses a toothbrush with rows of vertical tufts and rows of inclined, mutually inclined tufts. The ends of all tufts are cut in a sawtooth shape, with the ends of the vertical tufts forming a serration on their own and the ends of the mutually inclined tufts forming a sawtooth in pairs. As starting material, pointed bristles are used; the ends of the bristles are largely cut off by sawtooth cutting.
  • the not pre-published EP 1 827 164 discloses brush heads for toothbrushes.
  • paragraphs 21-25 and Figures 1-5 Two possible shapes of the bristle profile (cylindrical or tapered) are disclosed, and in paragraph 34 and Figs. 5A and 5B, two possible forms of tuft orientation (vertical or inclined) are disclosed. In addition, a mixed vertical / inclined tufts are not disclosed.
  • Object of the present invention was a further improvement of the brush heads for toothbrushes.
  • inclined in the context of the present application means that an inclined tuft is inclined at an acute angle to an imaginary line perpendicular to the bristle face, this imaginary line passing through the center of the hole in the bristle carrier associated with said tuft.
  • This acute angle is 1 to 10 °, preferably about 7 to 9 ° and more preferably about 8 °.
  • An inclined tuft can thus be inclined in the said acute angle about forward, backward or to one side.
  • All inclined tufts are tilted forward or backward.
  • tilted backwards in the context of the present application means that a tucked-back tuft is inclined in the longitudinal direction of the bristle carrier at the acute angle to the handle part
  • tiltted forward means in the context of the present application, in that a forwardly inclined tuft, viewed in the longitudinal direction of the bristle carrier, is inclined away from the handle part at the acute angle.
  • the brush head of the invention has a surface which may be flat or curved, and which has imaginary holes for receiving the tufts.
  • the bristle tufts protrude from this surface in the finished brush head. This surface is called a "bristle face”.
  • the brush heads according to the invention comprise, in addition to inclined tufts, a series of tufts protruding vertically from the bristle face, which are not inclined with respect to an imaginary line perpendicular to the bristle face passing through the center of the hole in the bristle carrier associated with the tuft.
  • These tufts protruding perpendicularly from the bristle surface preferably contain only non-pointed bristles.
  • the tufts of the inventive brush head are arranged in transverse to its longitudinal transverse rows, in each transverse row either only forward slanted tufts with tapered bristles, or only backward inclined tufts with tapered bristles, or only perpendicular from the bristle surface protruding bristle tufts are present wherein at least one transverse row of forwardly or rearwardly inclined tufts with pointed bristles and at least one transverse row of tufts protruding perpendicularly from the bristle face with non-pointed bristles is provided.
  • the tufts of the brush head according to the invention preferably have a circular cross-section.
  • pointed bristle is common in the art and refers to a particular cylindrical bristle, the ends of which are reduced by chemical etching (eg with sulfuric acid or sodium hydroxide solution) or by mechanical tapering in diameter such that the bristle is tapered towards its end, such as receives conical profile. If both ends of the bristle are treated in this way, one speaks of a "two-sided sharpened bristle", otherwise of a “one-sided sharpened bristle”. Details of pointed bristle manufacturing techniques are described in various patent publications; it will be exemplary on the EP-A-1 234 525 , Korean Patent No. 130932 and the US-A-2004/0070258 pointed. Sharpened bristles suitable for the present invention are also available on the market, such as from the manufacturers Sogo, Hylon, Best Whasung, Cheil Jedang, Lion and Whessen.
  • the pointed ends of the bristles taper towards their tapered end, rotationally symmetric about a central axis of the bristle.
  • the sharpened bristles particularly preferably have a profile (ie a diameter of the body of revolution as a function of the distance from the pointed end) which corresponds approximately to the numerical values from one of the following Tables 1 to 4.
  • Tables 1 to 4 the average diameters of the bristles are listed as a function of the distance from the pointed end.
  • the "diameter range" given in these tables is a typical standard deviation of the diameter determined from several copies of the bristle; this standard deviation can also be considered as range limits of the diameter for these four particularly preferred profiles according to the invention.
  • the pointed bristles may be made of any material commonly used for pointed toothbrush bristles.
  • the bristles are made of a polyester, in particular a poly (C 2 -C 8 ) alkylene terephthalate, wherein the (C 2 -C 8 ) alkylene is unbranched.
  • Rather preferred as bristle materials are polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate and polypentylene terephthalate; Particularly preferred is polybutylene terephthalate.
  • the non-tapered portion of the sharpened bristles when cylindrical, may have a diameter of about 0.15 to 0.25, preferably about 0.17 to 0.20 mm.
  • the non-tapered bristles may be made of any material commonly used for toothbrush bristles.
  • the non-sharpened bristles are preferably made of a polyamide, in particular of a polyamide, which is produced from an unbranched (C 2 -C 8 ) -1, ⁇ -diamine and an unbranched (C 4 -C 14 ) -1, ⁇ -dicarboxylic acid , Rather preferred as the bristle materials for the non-tapered bristles Polydimethylenadipinamid, Polytrimethylenadipinamid, Polytetramethylenadipinamid, Polypentamethylenadipinamid, Polyhexamethylenadipinamid, Polydimethylendodecanamid, Polytrimethylendodecanamid, Polytetramethylendodecanamid, Polypentamethylendodecanamid and Polyhexamethylendodecanamid. Particularly preferred is polyhexamethylenedodecanamide.
  • the non-sharpened bristles are preferably cylindrical and then preferably have a diameter of from about 0.15 to about 0.20, preferably from about 0.17 to about 0.19 mm.
  • the inventive brush head can be used for a manual toothbrush or for an electric toothbrush.
  • the bristles mounted on the brush head are set in motion either by hand movements, by motor drive or by sound waves.
  • the production of the brush heads according to the invention can be carried out analogously to the production of previously known brush heads.
  • one-sided or two-sided sharpened bristles may be used.
  • the holes of the bristle carrier which serve to receive the tufts, may have previously been drilled at any angle ⁇ or ⁇ in the bristle carrier, preferably they can also be produced directly in the manufacture of the bristle carrier by injection molding using punch punches.
  • the holes are preferably circular in cross section to allow the preferred circular tuft cross section.
  • the tuft is preferably anchored by means of an anchor plate or a loop in a hole of the bristle carrier.
  • all the bristles of the forming tufts are bent U-shaped within the hole, so that both ends of each bristle protrude from the hole.
  • the holes are usually not consistent here.
  • the proportion of the pointed ends of the tuft here is just equal to the proportion of double-pointed bristles used.
  • the tuft may be anchored in the hole as previously described or fabricated using the known AFT (anchor-free tufting) process.
  • AFT anchor-free tufting
  • the bristles are inserted into a support plate having through holes, and the bristles of each tuft are welded together at the back hole opening with each other by means of a heating punch.
  • the bristles then protrude from the front hole opening of the carrier plate.
  • the tufts provided with the tufts can then be poured or welded into a brush head. Details of this procedure are approximately in the EP-A-0 405 204 described.
  • Tufts containing only non-pointed bristles are preferably trimmed according to the invention to a uniform height. Tufts containing pointed and non-pointed bristles, or only pointed bristles, are preferably not trimmed according to the invention.
  • the selective trimming of the tufts can most easily be carried out with a small, pointed pair of scissors, for example a microscope scissors.
  • the steps of planting the tufts with non-tapered bristles, trimming and optionally rounding the bristles of these tufts, and finally planting the inclined tufts, wholly or partially made up of pointed bristles, may be placed in separate successive rows Operations are performed. The machinery and procedural details for each step are known to those skilled in the art.
  • gaps between tufts are understood to be measured at the height of the bristle surface of the bristle carrier between the central axes of the two tufts.
  • “Lengths of the brush head” are understood to mean distances between two transverse rows of tufts such that at the level of the bristle surface of the bristle carrier in the longitudinal direction, the distance between a first line connecting the center axes of the tufts of the first transverse row and a second line the central axes of the tufts of the second transverse row connects, is measured. This concerns eg in the FIG. 1 shown distance d x . In the figures, the central axes of the tufts are indicated by dashed lines.
  • the distance "in the longitudinal direction of the brush head” between any transverse row of tufts and a double row of X-shaped crossed tufts is the average of a) the distance "in the longitudinal direction of the brush head” between the arbitrary transverse row and the transverse row forming a double row, and b) the distance "in the longitudinal direction of the brush head” between the arbitrary transverse row and the second transverse row forming the double row.
  • the distance d xx shown is the average of a) the distance between the forward slanted transverse row represented by its tuft 302 and the rearwardly slanted transverse row represented by its tuft 303, and b) the distance between rearwardly slanted transverse row represented by its tuft 301 and the forward slanted transverse row represented by its tuft 304.
  • FIGS. 1 . 4 and 5 illustrate the definition of some of the above metrics.
  • the height h s it should be noted that it may be of medium height, as the tufts with pointed bristles preferably are not trimmed and therefore the individual bristles contained therein may have different heights.
  • This scattering of bristle height is in FIG. 1 Not shown.
  • This figure also shows that brush heads according to the invention need not necessarily have the inclined tufts in the form of an X-shaped crossed arrangement; the slanted rows of tufts may also be present either slanted forward or backward.
  • the brush heads comprise one or two double rows of x-shaped crossing tufts with pointed bristles. These double rows are each from a first transverse row of inclined backwards tufts with pointed bristles and a to this first transverse row in the direction of the handle portion at a distance d x adjacent second transverse row of forward slanted, compared to the tufts of the first transverse row offset in the transverse direction tufts pointed bristles formed ( Figures 2 and 3 ).
  • the distance d x between the forward and backward slanted tufts is 0.7 to 1.3 mm, more preferably 0.9 to 1.1 mm, and most preferably about 1.0 mm.
  • the height h s of the inclined tufts is 13.0 to 14.0 mm and preferably about 13.5 mm.
  • the brush head additionally comprises transverse rows of tufts protruding perpendicularly from the bristle surface with non-tapered bristles, such that each double row of x-shaped crossed tufts each have a vertical transverse row in the longitudinal direction of the handle portion and a further vertical transverse row in the longitudinal direction Headboard is adjacent.
  • X-shaped crossed tufts ( FIG. 2 ) are preferably at a distance d xx in the longitudinal direction of about 8.0 to 10.0 mm, more preferably 8.5 to 9.5 mm and more preferably about 8.9 mm apart.
  • d xx in the longitudinal direction of about 8.0 to 10.0 mm, more preferably 8.5 to 9.5 mm and more preferably about 8.9 mm apart.
  • two of them lie between the double rows in the form of a first and second middle transverse row, and the other two lie outside the two double rows and form an inner transverse row (in the direction of the handle part 11) and an outer transverse row (in the direction of the head part 12).
  • the distance d a between the double rows of X-crossed bristles and the middle transverse rows is preferably 2.5 to 4.0 mm, more preferably 3.0 to 3.5 mm, and particularly preferably about 3.2 mm.
  • the preferably trimmed height h a of the tufts of said middle transverse rows is preferably 9.0 to 11.0 mm, more preferably 9.5 to 10.5 mm and particularly preferably about 10.0 mm.
  • the distance d b of the said inner and outer transverse rows from the respective double row is preferably 2.5 to 3.5 mm, more preferably 2.7 to 3.3 mm and particularly preferably about 3.0 mm.
  • the preferably trimmed height h b of the tufts of the said inner and outer transverse rows is preferably 9.0 to 11.0 mm, more preferably 9.5 to 10.5 mm and particularly preferably about 10.0 mm.
  • said two transverse rows of vertical tufts adjoining the double row form an inner transverse row spaced apart from the double row by a distance d e in the direction of the handle portion 11 and an outer transverse row extending towards the head portion 12 in FIG a distance d f is spaced from the double row.
  • the distances d e and d f are preferably 3.0 to 4.5 mm and more preferably 3.0 to 4.0 mm. More preferably, d e is about 3.2 mm and d f is about 3.1 mm.
  • the preferably trimmed height h ef of the tufts of the inner and outer transverse row is preferably 9.0 to 11.0, more preferably 9.0 to 10.0, and particularly preferably about 10.0 mm.
  • a first particularly preferred embodiment of the brush head of the invention has a first double row of inclined, X-shaped crossed bristle tufts, the bristles of which are pointed and not trimmed. It is formed by a first transverse row of tufts of bristles tipped backwards (represented by its foremost tuft 301) and a second transverse row of two tufts inclined forwardly (represented by its foremost tuft 302).
  • the distance d x is about 1 mm.
  • the height h s of the slanted Tufts are about 13.5 mm, and the angles ⁇ and ⁇ , respectively, in which the tufts inclined forwardly and rearwardly are inclined, are about + 8 ° and about -8 °, respectively (definitions of d x , h s , ⁇ and ⁇ according to FIG. 1 ).
  • a second, identical double row of x-shaped crossed tufts is arranged.
  • a third transverse row of two backward slanted tufts (represented by their foremost tuft 303) and a fourth transverse row of three forward tipped tufts (represented by their foremost tuft 304).
  • the distances between the tufts in the transverse direction are about 4.5 mm.
  • a second middle transverse row of four vertical tufts with non-pointed bristles and trimmed to uniform height h a bristles present is a second middle transverse row of four vertical tufts with non-pointed bristles and trimmed to uniform height h a bristles present.
  • the widths of the tufts in the transverse direction are about 2.9 mm and the height h a is about 10.0 mm.
  • All bristles have a circular cross section over their entire length; the sharpened parts of the pointed bristles are thus rotational bodies.
  • the diameter D n of all non-sharpened bristles and the maximum diameter D z of all pointed bristles is about 0.175 mm.
  • All tufts are of circular cross-section; the diameter of all tufts is about 1.7 mm.
  • This brush head has a first double row of slanted and pointed bristle tufts crossing over in an X-shape as described in the first embodiment (represented by the foremost tufts 301, 302).
  • the rearwardly slanted transverse row (tuft 301) has two tufts spaced transversely of about 4.6 mm and the forward slanted row (tuft 302) has three tufts at a transverse spacing of about 4.6 mm each ,
  • the distance d x between the backward and the forward slanted transverse row in the longitudinal direction of the brush head is about 1 mm.
  • the height h s of the inclined tufts is about 13.5 mm, and the angles ⁇ and ⁇ , respectively, in which the tufts inclined forwardly and rearwardly are inclined, are about + 8 ° and about -8 °, respectively (definitions of d x , h s , ⁇ and ⁇ according to FIG. 1 ).
  • d e of about 3.2 mm in the longitudinal direction of the handle part 11 from the first double row, an inner transverse row of four tufts with non-pointed, h ef trimmed to a uniform height hef bristles arranged.
  • an outer transverse row of four tufts with non-pointed, h ef trimmed bristles is arranged.
  • the distances between the tufts in the transverse direction are approximately 2.9 mm and the heights h ef approximately 10 mm.
  • a further inner transverse row of four tufts with non-pointed bristles trimmed to a uniform height h gh is arranged.
  • a further outer transverse row of four tufts with non-pointed bristles trimmed to a uniform height h gh is arranged.
  • I the other inner transverse row and the other outer transverse row are the distances of the tufts in the transverse direction about 2.9 mm and the height h gh about 11 mm.
  • d i of about 8.2 mm in the longitudinal direction of the handle part 11 from the first double row
  • an innermost transverse row of three tufts with non-pointed bristles trimmed to a uniform height h ij is arranged.
  • an outermost transverse row of three tufts with non-pointed bristles trimmed to a uniform height h ij is arranged.
  • the distances between the tufts in the transverse direction amount to about 2.4 mm and the height h ij about 11.5 mm.
  • FIGS. 6 . 7 and Fig. 8 are the cleaning performances achieved with different brush heads in horizontal, vertical and circular cleaning movement, respectively.
  • the teeth of a maxillary sextant model (with 3 molars, 2 prebend teeth and 1 incisor) were first stained black and then whitewashed with a titanium dioxide paste (25g / v in 26% ethanol). After a standardized brushing process with the brush heads to be tested of 1 minute duration with 2.45 newtons of contact force, the percentage of tooth surfaces freed from the titanium dioxide paste was determined.
  • the standardized brushing process consisted of 60 reciprocating motions with an amplitude of 30 mm; in vertical cleaning it consisted of 60 up and down movements with an amplitude of 8 mm; and in the circular cleaning it consisted of 60 circles of radius 4 mm with 16 horizontal reciprocating movements with amplitude of 30 mm at the same time.

Abstract

A brush head and a toothbrush having a brush head with inclined and tapered bristles. In one aspect, the toothbrush includes a grip part, a head part, and a bristle area with tufts of bristles that are inserted therein. At least one of said tufts of bristles is inclined. The brush head is characterized in that the bristles in the at least one inclined tufts of bristles is tapered.

Description

Die vorliegende Erfindung betrifft Bürstenköpfe für Zahnbürsten, bei denen ein Teil der Büschel schräggestellt sind.The present invention relates to brush heads for toothbrushes in which a part of the tufts are tilted.

Zahnbürsten mit einem gemischten Besatz senkrecht vom Borstenträger aufragenden Büscheln einerseits und schräggestellten, sich x-förmig überkreuzenden Büscheln sind aus der EP-A-0 885 573 bekannt. Die Anmelderin der vorliegenden Anmeldung vertreibt im europäischen Raum unter den Namen Elmex Inter X, Elmex Inter X sensitive und Elmex Inter X junior drei Zahnbürsten dieses Typs. Diese Zahnbürsten zeichnen sich gegenüber einer Bürste mit ausschliesslich senkrecht stehenden oder ausschliesslich x-förmig gekreuzten Büscheln durch eine gute Reinigungsleistung sowohl bei den Zahnflächen als auch in den Zahnzwischenräumen aus.Toothbrushes with a mixed stocking perpendicular to the bristle carrier towering tufts on the one hand and inclined, cross-shaped x-shaped tufts are from the EP-A-0 885 573 known. The Applicant of the present application sells three toothbrushes of this type in Europe under the names Elmex Inter X, Elmex Inter X sensitive and Elmex Inter X junior. These toothbrushes are distinguished from a brush with exclusively vertical or exclusively x-shaped crossed tufts by a good cleaning performance both in the tooth surfaces and in the interdental spaces.

Um eine möglichst plane Reinigungsfläche der Büschel zu erzielen, werden Zahnbürsten nach ihrer Fertigstellung ob mit senkrechten Büscheln, mit x-förmigen Büscheln oder mit dem oben erwähnten gemischten Besatz, in der Regel auf eine innerhalb eines Büschels einheitliche Höhe getrimmt. Gewünschtenfalls werden die getrimmten Borstenenden anschliessend mechanisch verrundet, um das Verletzungsrisiko auf das Zahnfleisch zu verringern.In order to achieve a clean as possible cleaning surface of the tufts, toothbrushes after their completion, whether with vertical tufts, with x-shaped tufts or with the above-mentioned mixed stocking, usually trimmed to a uniform height within a tuft. If desired, the trimmed bristle ends are then mechanically rounded to reduce the risk of injury to the gums.

Seit neuerer Zeit sind, etwa aus der EP-A-0 596 633 , auch Zahnbürsten mit sogenannten "zugespitzten" Borsten bekannt, wobei die zugespitzten Borsten in senkrecht stehenden Büscheln angeordnet sind. Zugespitzte Borsten sind flexibler als herkömmliche Borsten und ermöglichen daher eine schonendere Reinigung der Zahnflächen mit geringerem Verletzungsrisiko. Zugespitzte Borsten lassen sich jedoch nach Fertigstellung der Bürste nicht auf gleiche Höhe trimmen, da so der zugespitzte Teil der Borsten mindestens teilweise verloren gehen würde.Since more recent time, approximately from the EP-A-0 596 633 Also known toothbrushes with so-called "pointed" bristles, wherein the pointed bristles are arranged in vertical tufts. Sharpened bristles are more flexible than conventional bristles and therefore allow a gentler cleaning of the tooth surfaces with less risk of injury. However, pointed bristles can not be trimmed to the same height after completion of the brush since the sharpened portion of the bristles would be at least partially lost.

FR 683.311 offenbart eine Zahnbürste mit Reihen von senkrecht stehenden Büscheln und Reihen von schrägstehenden Büscheln, deren Enden sich paarweise überkreuzen, so dass die Enden eine einzige aktive Fläche bilden. FR 683,311 discloses a toothbrush having rows of vertical tufts and rows of sloping tufts whose ends cross each other in pairs so that the ends form a single active area.

JP 2004-129683 A offenbart eine Zahnbürste mit Reihen von senkrecht stehenden Büscheln und Reihen von schrägstehenden, zueinander geneigten Büscheln. Die Enden aller Büschel sind sägezahnförmig zugeschnitten, wobei die Enden der senkrechten Büschel für sich alleine einen Sägezahn bilden und die Enden der zueinander geneigten Büschel paarweise zusammen einen Sägezahn bilden. Als Ausgangsmaterial werden zugespitzte Borsten verwendet; die Enden der Borsten sind durch das sägezahnförmige Zuschneiden grösstenteils abgeschnitten. JP 2004-129683 A discloses a toothbrush with rows of vertical tufts and rows of inclined, mutually inclined tufts. The ends of all tufts are cut in a sawtooth shape, with the ends of the vertical tufts forming a serration on their own and the ends of the mutually inclined tufts forming a sawtooth in pairs. As starting material, pointed bristles are used; the ends of the bristles are largely cut off by sawtooth cutting.

Die nicht vorveröffentlichte EP 1 827 164 offenbart Bürstenköpfe für Zahnbürsten. In Paragraphen 21-25 und Figuren 1-5 werden zwei mögliche Formen des Borstenprofils (zylindrisch oder zugespitzt) und in Paragraph 34 und Figuren 5A und 5B werden zwei mögliche Formen der Büschelorientierung (senkrecht stehend oder geneigt) offenbart. Ausserdem ist ein gemischt senkrecht stehender / schräggestellter Büschelbesatz nicht offenbart.The not pre-published EP 1 827 164 discloses brush heads for toothbrushes. In paragraphs 21-25 and Figures 1-5 Two possible shapes of the bristle profile (cylindrical or tapered) are disclosed, and in paragraph 34 and Figs. 5A and 5B, two possible forms of tuft orientation (vertical or inclined) are disclosed. In addition, a mixed vertical / inclined tufts are not disclosed.

Aufgabe der vorliegenden Erfindung war eine weitere Verbesserung der Bürstenköpfe für Zahnbürsten.Object of the present invention was a further improvement of the brush heads for toothbrushes.

Diese Aufgabe wird gelöst durch einen Bürstenkopf nach Anspruch 1.This object is achieved by a brush head according to claim 1.

Bevorzugte Ausführungsformen ergeben sich aus den Unteransprüchen.Preferred embodiments will be apparent from the dependent claims.

Es wurde überraschenderweise gefunden, dass die Reinigungsleistung auf die Zahnflächen erhöht und gleichzeitig ein schonenderes Reinigen der Zahnflächen möglich ist, wenn in einer Bürste mit gemischt senkrecht stehendem / schräggestelltem Besatz gemäss EP-A-0 885 573 nicht die senkrecht stehenden Büschel (was EP-A-0 596 633 vorschlagen würde), sondern die schräggestellten Büschel mit zugespitzten Borsten versehen werden.It has surprisingly been found that the cleaning performance is increased to the tooth surfaces and at the same time a gentler cleaning of the tooth surfaces is possible when in a brush with mixed vertical / tilted trim according to EP-A-0 885 573 not the vertical tufts (which EP-A-0 596 633 would suggest), but the slanted tufts are provided with pointed bristles.

Kurzer Beschrieb der Figuren

  • Figur 1 zeigt, wie einige im Rahmen der vorliegenden Erfindung verwendete Grössen betreffend die schräggestellten und zugespitzten Borstenbüschel zu verstehen sind.
  • Figuren 2 und 3 zeigen zwei Ausführungsformen des erfindungsgemässen Bürstenkopfes.
  • Figuren 4 und 5 zeigen zwei Ausführungsformen der Anordnung der Büschellöcher auf dem Borstenträger, die insbesondere für Bürstenköpfe gemäss Figur 2 bzw. 3 geeignet ist.
  • Figuren 6 , 7 und 8 zeigen die Messwerte der Reinigungsleistungen, die mit verschiedenen erfindungsgemässen Bürstenköpfen erzielt wurden.
Short description of the figures
  • FIG. 1 shows how to understand some of the sizes used in the present invention concerning the inclined and pointed bristle tufts.
  • Figures 2 and 3 show two embodiments of the inventive brush head.
  • FIGS. 4 and 5 show two embodiments of the arrangement of the Büschellöcher on the bristle carrier, in particular for brush heads according to FIG. 2 or 3 is suitable.
  • FIGS. 6 . 7 and 8th show the measured values of the cleaning performance, which were achieved with various brush heads according to the invention.

Der Begriff "schräggestellt" bedeutet im Rahmen der vorliegenden Anmeldung, dass ein schräggestelltes Büschel in einem spitzen Winkel gegenüber einer gedachten, senkrecht zur Borstenfläche stehenden Line geneigt ist, wobei diese gedachte Linie durch den Mittelpunkt des zu dem besagten Büschel zugehörigen Lochs im Borstenträger geht. Dieser spitze Winkel ist 1 bis 10°, bevorzugt etwa 7 bis 9° und eher bevorzugt etwa 8°. Ein schräggestelltes Büschel kann also in dem besagten spitzen Winkel etwa nach vorne, nach hinten oder zu einer Seite schräggestellt sein.The term "inclined" in the context of the present application means that an inclined tuft is inclined at an acute angle to an imaginary line perpendicular to the bristle face, this imaginary line passing through the center of the hole in the bristle carrier associated with said tuft. This acute angle is 1 to 10 °, preferably about 7 to 9 ° and more preferably about 8 °. An inclined tuft can thus be inclined in the said acute angle about forward, backward or to one side.

Alle schräggestellten Büschel sind nach vorne oder nach hinten schräggestellt. Der Begriff "nach hinten schräggestellt" bedeutet im Rahmen der vorliegenden Anmeldung, dass ein nach hinten schräggestelltes Büschel in Längsrichtung des Borstenträgers gesehen in dem spitzen Winkel zum Griffteil hin geneigt ist, und der Begriff "nach vorne schräggestellt" bedeutet im Rahmen der vorliegenden Anmeldung, dass ein nach vorne schräggestelltes Büschel in Längsrichtung des Borstenträgers gesehen in dem spitzen Winkel vom Griffteil weg geneigt ist.All inclined tufts are tilted forward or backward. The term "tilted backwards" in the context of the present application means that a tucked-back tuft is inclined in the longitudinal direction of the bristle carrier at the acute angle to the handle part, and the term "tilted forward" means in the context of the present application, in that a forwardly inclined tuft, viewed in the longitudinal direction of the bristle carrier, is inclined away from the handle part at the acute angle.

Der Bürstenkopf der Erfindung weist eine Oberfläche auf, die plan oder auch gewölbt sein kann, und die die zur Aufnahme der Büschel gedachten Löcher aufweist. Die Borstenbüschel ragen im fertigen Bürstenkopf aus dieser Oberfläche heraus. Diese Oberfläche wird als "Borstenfläche" bezeichnet.The brush head of the invention has a surface which may be flat or curved, and which has imaginary holes for receiving the tufts. The bristle tufts protrude from this surface in the finished brush head. This surface is called a "bristle face".

Sämtliche Borstenspitzen in den schräggestellten Büscheln sind zugespitzt.All bristle tips in the slanted tufts are sharpened.

Die erfindungsgemässen Bürstenköpfe umfassen neben schräggestellten Büscheln noch eine Reihe von senkrecht aus der Borstenfläche herausragenden Büscheln, die gegenüber einer gedachten, senkrecht zur Borstenfläche stehenden Linie, die durch den Mittelpunkt des zu dem besagten Büschel zugehörigen Lochs im Borstenträger geht, nicht geneigt sind. Diese senkrecht aus der Borstenfläche herausragenden Büschel enthalten bevorzugt nur nicht zugespitzte Borsten.The brush heads according to the invention comprise, in addition to inclined tufts, a series of tufts protruding vertically from the bristle face, which are not inclined with respect to an imaginary line perpendicular to the bristle face passing through the center of the hole in the bristle carrier associated with the tuft. These tufts protruding perpendicularly from the bristle surface preferably contain only non-pointed bristles.

Die Büschel des erfindungsgemässen Bürstenkopfs sind in zu seiner Längsrichtung quer verlaufenden Querreihen angeordnet, wobei in jeder Querreihe entweder nur nach vorne schräggestellte Büschel mit zugespitzten Borsten, oder nur nach hinten schräggestellte Büschel mit zugespitzten Borsten, oder nur senkrecht aus der Borstenfläche herausragende Borstenbüschel vorhanden sind, wobei mindestens eine Querreihe von nach vorne oder nach hinten schräggestellten Büscheln mit zugespitzten Borsten und mindestens eine Querreihe von senkrecht aus der Borstenfläche herausragenden Büscheln mit nicht zugespitzten Borsten vorhanden ist.The tufts of the inventive brush head are arranged in transverse to its longitudinal transverse rows, in each transverse row either only forward slanted tufts with tapered bristles, or only backward inclined tufts with tapered bristles, or only perpendicular from the bristle surface protruding bristle tufts are present wherein at least one transverse row of forwardly or rearwardly inclined tufts with pointed bristles and at least one transverse row of tufts protruding perpendicularly from the bristle face with non-pointed bristles is provided.

Bevorzugt weisen die Büschel des erfindungsgemässen Bürstenkopfs einen kreisförmigem Querschnitt auf.The tufts of the brush head according to the invention preferably have a circular cross-section.

Der Begriff "zugespitzte Borste" ist fachüblich und bezeichnet eine insbesondere zylinderförmige Borste, deren Enden mittels chemischem Abätzen (z.B. mit Schwefelsäure oder mit Natronlauge) oder mittels mechanischem Zuspitzen im Durchmesser dergestalt verringert werden, dass die Borste ein sich zu ihrem Ende hin verjüngendes, etwa konisches Profil erhält. Wenn beide Enden der Borste so behandelt werden, spricht man von einer "zweiseitig zugespitzten Borste", andernfalls von einer "einseitig zugespitzten Borste". Details für Herstellungsverfahren für zugespitzte Borsten sind in diversen Patentveröffentlichungen beschrieben; es wird beispielhaft auf die EP-A-1 234 525 , das koreanische Patent Nr. 130932 und die US-A-2004/0070258 hingewiesen. Für die vorliegende Erfindung geeignete zugespitzte Borsten sind auch auf dem Markt erhältlich, etwa von den Herstellern Sogo, Hylon, Best Whasung, Cheil Jedang, Lion und Wessen.The term "pointed bristle" is common in the art and refers to a particular cylindrical bristle, the ends of which are reduced by chemical etching (eg with sulfuric acid or sodium hydroxide solution) or by mechanical tapering in diameter such that the bristle is tapered towards its end, such as receives conical profile. If both ends of the bristle are treated in this way, one speaks of a "two-sided sharpened bristle", otherwise of a "one-sided sharpened bristle". Details of pointed bristle manufacturing techniques are described in various patent publications; it will be exemplary on the EP-A-1 234 525 , Korean Patent No. 130932 and the US-A-2004/0070258 pointed. Sharpened bristles suitable for the present invention are also available on the market, such as from the manufacturers Sogo, Hylon, Best Whasung, Cheil Jedang, Lion and Whessen.

Bevorzugt sind die zugespitzten Enden der Borsten sich zu ihrem zugespitzten Ende hin verjüngende, um eine Mittelachse der Borste rotationssymmetrische Rotationskörper. In dem Falle weisen die zugespitzten Borsten besonders bevorzugt ein Profil (d.h. einen Durchmesser des Rotationskörpers in Funktion des Abstandes vom zugespitzten Ende) auf, das etwa den numerischen Werten aus einer der folgenden Tabellen 1 bis 4 entspricht. In diesen Tabellen sind die mittleren Durchmesser der Borsten in Abhängigkeit vom Abstand vom zugespitzten Ende aufgeführt. Als "Durchmesserbereich" ist in diesen Tabellen ein typische, aus mehreren Exemplaren der Borste ermittelte Standardabweichung des Durchmessers angegeben; diese Standardabweichung kann auch als Bereichsgrenzen des Durchmessers für diese vier erfindungsgemäss besonders bevorzugten Profile gelten. Tabelle 1 Abstand vom zugespitzten Ende [mm] 0 1 2 3 4 5 6 7 8 9 10 11 12 Durchmesser [mm] 0,019 0,066 0,107 0,147 0,172 0,183 0,190 0,195 0,197 0,199 0,201 0,203 0,202 Durchmesserbereich [+/- mm] 0,005 0,006 0,012 0,019 0,021 0,020 0,019 0,014 0,014 0,014 0,012 0,011 0,010 Tabelle 2 Abstand vom zugespitzten Ende [mm] 0 1 2 3 4 5 6 7 8 9 10 11 12 Durchmesser [mm] 0,017 0,086 0,140 0,172 0,185 0,192 0,198 0,201 0,204 0,205 0,205 0,208 0,209 Durchmesserbereich [+/- mm] 0,005 0,012 0,018 0,021 0,018 0,015 0,013 0,010 0,009 0,008 0,008 0,007 0,006 Tabelle 3 Abstand vom zugespitzten Ende [mm] 0 1 2 3 4 5 6 7 8 9 10 11 12 Durchmesser [mm] 0,014 0,058 0,096 0,127 0,151 0,170 0,183 0,191 0,199 0,202 0,206 0,208 0,209 Durchmesserbereich [+/- mm] 0,001 0,003 0,009 0,009 0,009 0,008 0,007 0,006 0,008 0,005 0,006 0,005 0,003 Tabelle 4 Abstand vom zugespitzten Ende [mm] 0 1 2 3 4 5 6 7 8 9 10 11 12 Durchmesser [mm] 0,0204 0,0691 0,112 0,137 0,150 0,156 0,159 0,162 0,163 0,164 0,165 0,165 0,166 Durchmesserbereich [+/- mm] 0,022 0,013 0,010 0,011 0,009 0,009 0,008 0,008 0,007 0,007 0,007 0,007 0,007 Preferably, the pointed ends of the bristles taper towards their tapered end, rotationally symmetric about a central axis of the bristle. In this case, the sharpened bristles particularly preferably have a profile (ie a diameter of the body of revolution as a function of the distance from the pointed end) which corresponds approximately to the numerical values from one of the following Tables 1 to 4. In these tables, the average diameters of the bristles are listed as a function of the distance from the pointed end. The "diameter range" given in these tables is a typical standard deviation of the diameter determined from several copies of the bristle; this standard deviation can also be considered as range limits of the diameter for these four particularly preferred profiles according to the invention. Table 1 Distance from the pointed end [mm] 0 1 2 3 4 5 6 7 8th 9 10 11 12 Diameter [mm] 0.019 0.066 0,107 0,147 0.172 0.183 0,190 0.195 0.197 0,199 0.201 0,203 0.202 Diameter range [+/- mm] 0.005 0,006 0,012 0.019 0,021 0,020 0.019 0,014 0,014 0,014 0,012 0.011 0,010 Distance from the pointed end [mm] 0 1 2 3 4 5 6 7 8th 9 10 11 12 Diameter [mm] 0,017 0.086 0.140 0.172 0.185 0.192 0.198 0.201 0.204 0,205 0,205 0.208 0.209 Diameter range [+/- mm] 0.005 0,012 0,018 0,021 0,018 0,015 0,013 0,010 0.009 0,008 0,008 0,007 0,006 Distance from the pointed end [mm] 0 1 2 3 4 5 6 7 8th 9 10 11 12 Diameter [mm] 0,014 0.058 0.096 0,127 0,151 0,170 0.183 0.191 0,199 0.202 0,206 0.208 0.209 Diameter range [+/- mm] 0.001 0,003 0.009 0.009 0.009 0,008 0,007 0,006 0,008 0.005 0,006 0.005 0,003 Distance from the pointed end [mm] 0 1 2 3 4 5 6 7 8th 9 10 11 12 Diameter [mm] 0.0204 0.0691 0.112 0,137 0,150 0.156 0,159 0.162 0.163 0.164 0,165 0,165 0.166 Diameter range [+/- mm] 0,022 0,013 0,010 0.011 0.009 0.009 0,008 0,008 0,007 0,007 0,007 0,007 0,007

Die zugespitzten Borsten können aus jedem Material bestehen, das üblicherweise für zugespitzte Zahnbürstenborsten verwendet wird. Bevorzugt sind die Borsten aus einem Polyester, insbesondere einem Poly(C2-C8)alkylenterephthalat hergestellt, wobei das (C2-C8)Alkylen unverzweigt ist. Eher bevorzugt sind als Borstenmaterialien Polyethylenterephthalat, Polypropylenterephthalat, Polybutylenterephthalat und Polypentylenterephthalat; besonders bevorzugt ist Polybutylenterephthalat.The pointed bristles may be made of any material commonly used for pointed toothbrush bristles. Preferably, the bristles are made of a polyester, in particular a poly (C 2 -C 8 ) alkylene terephthalate, wherein the (C 2 -C 8 ) alkylene is unbranched. Rather preferred as bristle materials are polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate and polypentylene terephthalate; Particularly preferred is polybutylene terephthalate.

Der nicht zugespitzte Teil der zugespitzten Borsten kann, wenn er zylindrisch ist, einen Durchmesser von etwa 0,15 bis 0,25, bevorzugt etwa 0,17 bis 0,20 mm aufweisen.The non-tapered portion of the sharpened bristles, when cylindrical, may have a diameter of about 0.15 to 0.25, preferably about 0.17 to 0.20 mm.

Die nicht zugespitzten Borsten können aus jedem Material bestehen, das üblicherweise für Zahnbürstenborsten verwendet wird. Bevorzugt sind die nicht zugespitzten Borsten aus einem Polyamid, insbesondere aus einem Polyamid, das aus einem unverzweigten (C2-C8)-1,ω-Diamin und einer unverzweigten (C4-C14)-1,ω-Dicarbonsäure hergestellt ist. Eher bevorzugt sind als Borstenmaterialien für die nicht zugespitzten Borsten Polydimethylenadipinamid, Polytrimethylenadipinamid, Polytetramethylenadipinamid, Polypentamethylenadipinamid, Polyhexamethylenadipinamid, Polydimethylendodecanamid, Polytrimethylendodecanamid, Polytetramethylendodecanamid, Polypentamethylendodecanamid und Polyhexamethylendodecanamid. Besonders bevorzugt ist Polyhexamethylendodecanamid.The non-tapered bristles may be made of any material commonly used for toothbrush bristles. The non-sharpened bristles are preferably made of a polyamide, in particular of a polyamide, which is produced from an unbranched (C 2 -C 8 ) -1, ω-diamine and an unbranched (C 4 -C 14 ) -1, ω-dicarboxylic acid , Rather preferred as the bristle materials for the non-tapered bristles Polydimethylenadipinamid, Polytrimethylenadipinamid, Polytetramethylenadipinamid, Polypentamethylenadipinamid, Polyhexamethylenadipinamid, Polydimethylendodecanamid, Polytrimethylendodecanamid, Polytetramethylendodecanamid, Polypentamethylendodecanamid and Polyhexamethylendodecanamid. Particularly preferred is polyhexamethylenedodecanamide.

Die nicht zugespitzten Borsten sind bevorzugt zylinderförmig und weisen dann bevorzugt einen Durchmesser von etwa 0,15 bis etwa 0,20, bevorzugt etwa 0,17 bis etwa 0,19 mm auf.The non-sharpened bristles are preferably cylindrical and then preferably have a diameter of from about 0.15 to about 0.20, preferably from about 0.17 to about 0.19 mm.

Der erfindungsgemässe Bürstenkopf kann für eine Handzahnbürste oder für eine elektrische Zahnbürste eingesetzt werden. Dabei werden die auf dem Bürstenkopf angebrachten Borsten entweder durch Handbewegungen, durch Motorantrieb oder durch Schallwellen in Bewegung gesetzt.The inventive brush head can be used for a manual toothbrush or for an electric toothbrush. The bristles mounted on the brush head are set in motion either by hand movements, by motor drive or by sound waves.

Die Herstellung der erfindungsgemässen Bürstenköpfe kann in Analogie zu der Herstellung vorbekannter Bürstenköpfe erfolgen.The production of the brush heads according to the invention can be carried out analogously to the production of previously known brush heads.

Zur Herstellung der Büschel können einseitig oder zweiseitig zugespitzte Borsten verwendet werden.To produce the tufts, one-sided or two-sided sharpened bristles may be used.

Die Löcher des Borstenträgers, die zur Aufnahme der Büschel dienen, können vorgängig in jedem beliebigen Winkel α oder β in den Borstenträger gebohrt worden sein, bevorzugt können sie auch direkt bei der Herstellung des Borstenträgers im Spritzguss unter Verwendung von Lochstempeln hergestellt werden. Die Löcher sind bevorzugt von kreisförmigem Querschnitt, um den bevorzugten kreisförmigen Büschelquerschnitt zu ermöglichen.The holes of the bristle carrier, which serve to receive the tufts, may have previously been drilled at any angle α or β in the bristle carrier, preferably they can also be produced directly in the manufacture of the bristle carrier by injection molding using punch punches. The holes are preferably circular in cross section to allow the preferred circular tuft cross section.

Wenn zweiseitig zugespitzte und nicht zugespitzte Borsten in beliebigem Verhältnis gemischt in einem Büschel mitverwendet werden, wird das Büschel bevorzugt mittels eines Ankerplättchens oder einer Schlaufe in einem Loch des Borstenträgers verankert. Dabei werden alle Borsten des sich bildenden Büschels innerhalb des Lochs u-förmig umgebogen, so dass beide Enden jeder Borste aus dem Loch herausragen. Die Löcher sind hier in der Regel nicht durchgängig. Der Anteil der zugespitzten Enden des Büschels ist hier gerade gleich dem verwendeten Anteil an doppelt zugespitzten Borsten.If bilaterally pointed and non-sharpened bristles are mixed in any ratio used in a tuft, the tuft is preferably anchored by means of an anchor plate or a loop in a hole of the bristle carrier. In this case, all the bristles of the forming tufts are bent U-shaped within the hole, so that both ends of each bristle protrude from the hole. The holes are usually not consistent here. The proportion of the pointed ends of the tuft here is just equal to the proportion of double-pointed bristles used.

Wenn einseitig zugespitzte und nicht zugespitzte Borsten gemischt, oder nur nicht zugespitzte Borsten, in einem Büschel verwendet werden, kann das Büschel einerseits wie vorher beschrieben im Loch verankert oder mittels des bekannten AFT-("anchor free tufting"-)Verfahrens hergestellt werden. Bei diesem Verfahren werden die Borsten in ein Trägerplättchen, das durchgängige Löcher aufweist, eingeführt und die Borsten jedes Büschels werden an der rückseitigen Lochöffung miteinander mittels eines Heizstempels verschweisst. Die Borsten ragen dann aus der frontseitigen Lochöffnung des Trägerplättchens heraus. Das mit den Büscheln versehene Plättchen kann dann in einen Bürstenkopf eingegossen oder eingeschweisst werden. Details dieses Verfahrens sind etwa in der EP-A-0 405 204 beschrieben. Zur Herstellung eines gemischten Besatzes von senkrechten/schräggestellten Büscheln werden bevorzugt mehrere Trägerplättchen verwendet, die zunächst senkrechte Löcher aufweisen, aber nach dem AFT-Einsetzen der Borsten in geeigneten Winkeln aneinander geschweisst werden (siehe auch WO-A-2004/056235 ). Das so hergestellte zusammengesetzte Trägerplättchen kann wiederum in einen Bürstenkopf eingegossen oder eingeschweisst werden. Der Anteil der zugespitzten Enden im Büschel ist bei der Herstellungsvariante mit Verankerung gleich der Hälfte des eingesetzten Anteils einseitig zugespitzter Borsten; bei Verwendung des AFT-Verfahrens ist er gerade gleich diesem eingesetzten Anteil.If unilaterally tapered and non-sharpened bristles are mixed, or only non-tapered bristles are used in a tuft, the tuft may be anchored in the hole as previously described or fabricated using the known AFT (anchor-free tufting) process. In this method, the bristles are inserted into a support plate having through holes, and the bristles of each tuft are welded together at the back hole opening with each other by means of a heating punch. The bristles then protrude from the front hole opening of the carrier plate. The tufts provided with the tufts can then be poured or welded into a brush head. Details of this procedure are approximately in the EP-A-0 405 204 described. To produce a mixed stock of vertical / inclined tufts, it is preferred to use a plurality of carrier plates which initially have vertical holes but which are welded together at appropriate angles after the AFT has been inserted into the bristles (see also US Pat WO-A-2004/056235 ). The composite carrier plate thus produced can in turn be cast or welded into a brush head. The proportion of the pointed ends in the tuft is in the production variant with anchoring equal to half of the proportion used unilaterally pointed bristles; when using the AFT method, it is just equal to this proportion used.

Büschel, die nur nicht zugespitzte Borsten enthalten, werden erfindungsgemäss bevorzugt auf eine einheitliche Höhe getrimmt. Büschel, die zugespitzte und nicht zugespitzte Borsten gemischt, oder nur zugespitzte Borsten, enthalten, werden erfindungsgemäss bevorzugt nicht getrimmt. Zur Herstellung von Prototypen kann das selektive Trimmen der Büschel, die nur nicht zugespitzte Borsten enthalten, am einfachsten mit einer kleinen, spitzen Schere, etwa einer Mikroskopierschere, durchgeführt werden. Im Serienmassstab können die Schritte des Einpflanzens der Büschel mit nur nicht zugespitzte Borsten, des Trimmens und optionalen Verrundens der Borsten dieser Büschel, und schlussendlich des Einpflanzens der schräggestellten Büschel, die ganz oder teilweise aus zugespitzten Borsten bestehen, in der angegebenen Reihenfolge in getrennten, hintereinandergeschaltenen Arbeitsgängen durchgeführt werden. Die Maschinen und verfahrenstechnischen Einzelheiten für jeden Schritt sind dem Fachmann bekannt.Tufts containing only non-pointed bristles are preferably trimmed according to the invention to a uniform height. Tufts containing pointed and non-pointed bristles, or only pointed bristles, are preferably not trimmed according to the invention. For the production of prototypes, the selective trimming of the tufts, which contain only non-sharpened bristles, can most easily be carried out with a small, pointed pair of scissors, for example a microscope scissors. On a mass scale, the steps of planting the tufts with non-tapered bristles, trimming and optionally rounding the bristles of these tufts, and finally planting the inclined tufts, wholly or partially made up of pointed bristles, may be placed in separate successive rows Operations are performed. The machinery and procedural details for each step are known to those skilled in the art.

Unter Verweis auf Figuren 1, 2, 3, 4 und 5 werden bevorzugte Ausführungsformen der Erfindung geschrieben.In reference to FIGS. 1, 2 . 3 . 4 and 5 preferred embodiments of the invention are written.

Für diese bevorzugten Ausführungsformen werden Abstände zwischen Büscheln so verstanden, dass auf der Höhe der Borstenfläche des Borstenträgers zwischen den Mittelachsen der beiden Büschel gemessen wird. Des Weiteren werden Abstände "in Längsrichtung des Bürstenkopfs" zwischen zwei Querreihen von Büscheln so verstanden, dass auf der Höhe der Borstenfläche des Borstenträgers in Längsrichtung der Abstand zwischen einer ersten Linie, die die Mittelachsen der Büschel der ersten Querreihe miteinander verbindet, und einer zweiten Linie, die die Mittelachsen der Büschel der zweiten Querreihe miteinander verbindet, gemessen wird. Dies betrifft z.B. den in der Figur 1 gezeigten Abstand dx. In den Figuren sind die Mittelachsen der Büschel durch gestrichelte Linien angedeutet. Der Abstand "in Längsrichtung des Bürstenkopfs" zwischen einer beliebigen Querreihe von Büscheln und einer Doppelreihe von X-förmig überkreuzten Büscheln ist der Mittelwert aus a) dem Abstand "in Längsrichtung des Bürstenkopfs" zwischen der beliebigen Querreihe und der einen die Doppelreihe bildenden Querreihe, und b) dem Abstand "in Längsrichtung des Bürstenkopfs" zwischen der beliebigen Querreihe und der zweiten die Doppelreihe bildenden Querreihe. Dies betrifft die Abstände da, db, dc, dd, de, df, dg, dh, di und dj, die in den Figuren 2-5 gezeigt sind. Der in den Figuren 2 und 4 gezeigte Abstand dxx ist der Mittelwert aus a) dem Abstand zwischen der nach vorne schräggestellten Querreihe, die durch ihr Büschel 302 dargestellt ist, und der nach hinten schräggestellten Querreihe, die durch ihr Büschel 303 dargestellt ist, und b) dem Abstand zwischen der nach hinten schräggestellten Querreihe, die durch ihr Büschel 301 dargestellt ist, und der nach vorne schräggestellten Querreihe, die durch ihr Büschel 304 dargestellt ist.For these preferred embodiments, gaps between tufts are understood to be measured at the height of the bristle surface of the bristle carrier between the central axes of the two tufts. Furthermore "Lengths of the brush head" are understood to mean distances between two transverse rows of tufts such that at the level of the bristle surface of the bristle carrier in the longitudinal direction, the distance between a first line connecting the center axes of the tufts of the first transverse row and a second line the central axes of the tufts of the second transverse row connects, is measured. This concerns eg in the FIG. 1 shown distance d x . In the figures, the central axes of the tufts are indicated by dashed lines. The distance "in the longitudinal direction of the brush head" between any transverse row of tufts and a double row of X-shaped crossed tufts is the average of a) the distance "in the longitudinal direction of the brush head" between the arbitrary transverse row and the transverse row forming a double row, and b) the distance "in the longitudinal direction of the brush head" between the arbitrary transverse row and the second transverse row forming the double row. This applies to the distances d a , d b , d c , d d , d e , d f , d g , d h , d i and d j , which in the Figures 2-5 are shown. The in the Figures 2 and 4 The distance d xx shown is the average of a) the distance between the forward slanted transverse row represented by its tuft 302 and the rearwardly slanted transverse row represented by its tuft 303, and b) the distance between rearwardly slanted transverse row represented by its tuft 301 and the forward slanted transverse row represented by its tuft 304.

Figuren 1, 4 und 5 veranschaulichen die Definition einiger obiger Messgrössen. Zu der Höhe hs ist anzumerken, dass es sich um eine mittlere Höhe handeln kann, da die Büschel mit zugespitzten Borsten bevorzugt nicht getrimmt werden und daher die einzelnen darin enthaltenen Borsten unterschiedliche Höhen aufweisen können. Diese Streuung der Borstenhöhe ist in Figur 1 nicht gezeigt. Diese Figur zeigt auch, dass erfindungsgemässe Bürstenköpfe die schräggestellten Büschel nicht zwingend in Form einer x-förmigen überkreuzten Anordnung aufzuweisen brauchen; die schräggestellten Büschelreihen können auch alleine entweder nach vorne oder nach hinten schräggestellt vorhanden sein. FIGS. 1 . 4 and 5 illustrate the definition of some of the above metrics. As to the height h s , it should be noted that it may be of medium height, as the tufts with pointed bristles preferably are not trimmed and therefore the individual bristles contained therein may have different heights. This scattering of bristle height is in FIG. 1 Not shown. This figure also shows that brush heads according to the invention need not necessarily have the inclined tufts in the form of an X-shaped crossed arrangement; the slanted rows of tufts may also be present either slanted forward or backward.

Die Bürstenköpfe umfassen eine oder zwei Doppelreihen von sich x-förmig überkreuzenden Büscheln mit zugespitzen Borsten. Diese Doppelreihen werden je von einer ersten Querreihe von nach hinten schräggestellten Büscheln mit zugespitzten Borsten und einer zu dieser ersten Querreihe in Richtung des Griffteils in einem Abstand dx benachbarte zweite Querreihe von nach vorne schräggestellten, gegenüber den Büscheln der ersten Querreihe in Querrichtung versetzten Büscheln mit zugespitzten Borsten gebildet (Figuren 2 und 3). Der Abstand dx zwischen der nach vorne und der nach hinten schräggestellten Büschelreihe beträgt 0,7 bis 1,3 mm, eher bevorzugt 0,9 bis 1,1 mm und besonders bevorzugt etwa 1,0 mm. Die Höhe hs der schräggestellten Büschel beträgt 13,0 bis 14,0 mm und bevorzugt etwa 13,5 mm.The brush heads comprise one or two double rows of x-shaped crossing tufts with pointed bristles. These double rows are each from a first transverse row of inclined backwards tufts with pointed bristles and a to this first transverse row in the direction of the handle portion at a distance d x adjacent second transverse row of forward slanted, compared to the tufts of the first transverse row offset in the transverse direction tufts pointed bristles formed ( Figures 2 and 3 ). The distance d x between the forward and backward slanted tufts is 0.7 to 1.3 mm, more preferably 0.9 to 1.1 mm, and most preferably about 1.0 mm. The height h s of the inclined tufts is 13.0 to 14.0 mm and preferably about 13.5 mm.

Noch eher bevorzugt umfasst der Bürstenkopf zusätzlich Querreihen von senkrecht aus der Borstenfläche herausragenden Büscheln mit nicht zugespitzten Borsten, dergestalt, dass an jede Doppelreihe von x-förmig überkreuzten Büscheln je eine senkrechte Querreihe in Längsrichtung zum Griffteil hin und je eine weitere senkrechte Querreihe in Längsrichtung zum Kopfteil hin angrenzt.Even more preferably, the brush head additionally comprises transverse rows of tufts protruding perpendicularly from the bristle surface with non-tapered bristles, such that each double row of x-shaped crossed tufts each have a vertical transverse row in the longitudinal direction of the handle portion and a further vertical transverse row in the longitudinal direction Headboard is adjacent.

Wenn genau zwei Doppelreihen von X-förmig überkreuzten Büscheln vorhanden sind (Figur 2), sind diese bevorzugt in einem Abstand dxx in Längsrichtung von etwa 8,0 bis 10,0 mm, eher bevorzugt 8,5 bis 9,5 mm und besonders bevorzugt etwa 8,9 mm voneinander getrennt. Von den besagten Querreihen von senkrechten Büscheln, die an die Doppelreihen angrenzen (insgesamt dann vier senkrechte Querreihen), liegen zwei davon zwischen den Doppelreihen in Form einer ersten und zweiten mittleren Querreihe, und die anderen zwei liegen ausserhalb der beiden Doppelreihen und bilden eine innere Querreihe (in Richtung des Griffteils 11) und eine äussere Querreihe (in Richtung des Kopfteils 12). Der Abstand da zwischen den Doppelreihen von X-förmig überkreuzten Borsten und den mittleren Querreihen beträgt bevorzugt 2,5 bis 4,0 mm, eher bevorzugt 3,0 bis 3,5 mm und besonders bevorzugt etwa 3,2 mm. Die bevorzugt getrimmte Höhe ha der Büschel der besagten mittleren Querreihen beträgt bevorzugt 9,0 bis 11,0 mm, eher bevorzugt 9,5 bis 10,5 mm und besonders bevorzugt etwa 10,0 mm. Der Abstand db der besagten inneren und äusseren Querreihe von der jeweiligen Doppelreihe beträgt bevorzugt 2,5 bis 3,5 mm, eher bevorzugt 2,7 bis 3,3 mm und besonders bevorzugt etwa 3,0 mm. Die bevorzugt getrimmte Höhe hb der Büschel der besagten inneren und äusseren Querreihen beträgt bevorzugt 9,0 bis 11,0 mm, eher bevorzugt 9,5 bis 10,5 mm und besonders bevorzugt etwa 10,0 mm.If there are exactly two double rows of X-shaped crossed tufts ( FIG. 2 ), these are preferably at a distance d xx in the longitudinal direction of about 8.0 to 10.0 mm, more preferably 8.5 to 9.5 mm and more preferably about 8.9 mm apart. Of the said transverse rows of vertical tufts adjoining the double rows (in total then four vertical transverse rows), two of them lie between the double rows in the form of a first and second middle transverse row, and the other two lie outside the two double rows and form an inner transverse row (in the direction of the handle part 11) and an outer transverse row (in the direction of the head part 12). The distance d a between the double rows of X-crossed bristles and the middle transverse rows is preferably 2.5 to 4.0 mm, more preferably 3.0 to 3.5 mm, and particularly preferably about 3.2 mm. The preferably trimmed height h a of the tufts of said middle transverse rows is preferably 9.0 to 11.0 mm, more preferably 9.5 to 10.5 mm and particularly preferably about 10.0 mm. The distance d b of the said inner and outer transverse rows from the respective double row is preferably 2.5 to 3.5 mm, more preferably 2.7 to 3.3 mm and particularly preferably about 3.0 mm. The preferably trimmed height h b of the tufts of the said inner and outer transverse rows is preferably 9.0 to 11.0 mm, more preferably 9.5 to 10.5 mm and particularly preferably about 10.0 mm.

Wenn genau eine Doppelreihe von X-förmig überkreuzten Büscheln vorhanden ist (Figur 3), bilden die besagten beiden Querreihen von senkrechten Büscheln, die an die Doppelreihe angrenzen, eine innere Querreihe, die in Richtung des Griffteils 11 in einem Abstand de von der Doppelreihe beabstandet ist, und eine äussere Querreihe, die in Richtung des Kopfteils 12 in einem Abstand df von der Doppelreihe beabstandet ist. Die Abstände de und df betragen bevorzugt 3,0 bis 4,5 mm und eher bevorzugt 3,0 bis 4,0 mm. Besonders bevorzugt ist de etwa 3,2 mm und df etwa 3,1 mm. Die bevorzugt getrimmte Höhe hef der Büschel der inneren und äusseren Querreihe beträgt bevorzugt 9,0 bis 11,0, eher bevorzugt 9,0 bis 10,0 und besonders bevorzugt etwa 10,0 mm.If there is exactly one double row of X-shaped crossed tufts ( FIG. 3 ), said two transverse rows of vertical tufts adjoining the double row form an inner transverse row spaced apart from the double row by a distance d e in the direction of the handle portion 11 and an outer transverse row extending towards the head portion 12 in FIG a distance d f is spaced from the double row. The distances d e and d f are preferably 3.0 to 4.5 mm and more preferably 3.0 to 4.0 mm. More preferably, d e is about 3.2 mm and d f is about 3.1 mm. The preferably trimmed height h ef of the tufts of the inner and outer transverse row is preferably 9.0 to 11.0, more preferably 9.0 to 10.0, and particularly preferably about 10.0 mm.

Eine erste besonders bevorzugte Ausführungsform des Bürstenkopfs der Erfindung (Figuren 1, 2 und 4) weist eine erste Doppelreihe von schräggestellten, x-förmig überkreuzten Borstenbüscheln auf, deren Borsten zugespitzt und nicht getrimmt sind. Sie ist durch eine erste Querreihe von nach drei nach hinten schräggestellten Borstenbüscheln (dargestellt durch ihr vorderstes Büschel 301) und eine zweite Querreihe von zwei nach vorne schräggestellten Büscheln (dargestellt durch ihr vorderstes Büschel 302) gebildet. Der Abstand dx, den die beiden die besagte Doppelreihe bildenden Querreihen in Längsrichtung des Bürstenkopfes voneinander haben, beträgt etwa 1 mm. Die Höhe hs der schräggestellten Büschel beträgt etwa 13,5 mm, und die Winkel α bzw. β, in dem die nach vorne bzw. nach hinten schräggestellten Büschel geneigt sind, betragen etwa +8° bzw. etwa -8° (Definitionen von dx, hs, α und β gemäss Figur 1). In einem Abstand dxx in Richtung des Kopfteils 12 von etwa 8,9 mm zur soeben beschriebenen ersten Doppelreihe ist eine zweite, gleiche Doppelreihe von x-förmig überkreuzten Büscheln angeordnet. Sie wird von einer dritten Querreihe von zwei nach hinten schräggestellten Büscheln (dargestellt durch ihr vorderstes Büschel 303) und einer vierten Querreihe von drei nach vorne schräggestellten Büscheln (dargestellt durch ihr vorderstes Büschel 304) gebildet. Bei den vier Querreihen, die die beiden Doppelreihen bilden, betragen die Abstände zwischen den Büscheln in Querrichtung etwa 4,5 mm. In einem Abstand da in Längsrichtung zum Kopfteil 12 hin von etwa 3,2 mm von der ersten Doppelreihe ist eine erste mittlere Querreihe von vier senkrechten Büscheln mit nicht zugespitzten und auf einheitliche Höhe ha getrimmten Borsten vorhanden. In einem Abstand da in Längsrichtung zum Griffteil 11 hin von etwa 3,2 mm von der zweiten Doppelreihe ist eine zweite mittlere Querreihe von vier senkrechten Büscheln mit nicht zugespitzten und auf einheitliche Höhe ha getrimmten Borsten vorhanden. In diesen mittleren Querreihen betragen die Abstände der Büschel in Querrichtung etwa 2,9 mm und die Höhe ha etwa 10,0 mm. In einem Abstand db von etwa 3,0 mm von der ersten Doppelreihe in Längsrichtung des Bürstenkopfs zum Griffteil 11 hin ist eine innere Querreihe von vier senkrecht vom Bürstenkörper aufragenden Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hb getrimmten Borsten angeordnet. In einem Abstand db in Längsrichtung des Bürstenkopfs zum Kopfteil 12 hin von etwa 3,0 mm von der zweiten Doppelreihe ist eine äussere Querreihe von vier senkrecht vom Bürstenkörper aufragenden Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hb getrimmten Borsten angeordnet. In dieser inneren und äusseren Querreihe betragen die Abstände der Büschel in Querrichtung etwa 2,3 mm und die Höhe hb der Büschel etwa 10 mm. In Längsrichtung des Bürstenkopfs in einem Abstand dc zum Griffteil 11 hin von etwa 5,5 mm zur ersten Doppelreihe ist eine innerste Querreihe von drei senkrechten Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hcd getrimmten Borsten angeordnet. In Längsrichtung des Bürstenkopfs zum Kopfteil 12 hin in einem Abstand dd von etwa 5,4 mm zur zweiten Doppelreihe ist eine äusserste Querreihe von drei senkrechten Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hcd getrimmten Borsten angeordnet. Die Höhe hcd der Büschel der innersten und äussersten Querreihe beträgt etwa 11 mm und ihr Abstand voneinander in Querrichtung etwa 2,3 mm. Dies ergibt einen Besatz von insgesamt 32 Büschel (10 schräggestellte Büschel mit zugespitzten Borsten, 16 senkrechte Büschel mit nicht zugespitzten Borsten, und 6 senkrechte Büschel mit nicht zugespitzten, aber gegenüber den vorherigen 16 Büscheln etwas erhöhten Büscheln nahe dem Griffteil 11 und beim Kopfteil 12). Alle Borsten weisen über ihre gesamte Länge einen kreisförmigen Querschnitt auf; die zugespitzten Teile der zugespitzten Borsten sind also Rotationskörper. Der Durchmesser Dn aller nicht zugespitzten Borsten und der maximale Durchmesser Dz aller zugespitzten Borsten beträgt etwa 0,175 mm. Alle Büschel sind von kreisförmigem Querschnitt; der Durchmesser aller Büschel beträgt etwa 1,7 mm.A first particularly preferred embodiment of the brush head of the invention ( FIGS. 1, 2 and 4 ) has a first double row of inclined, X-shaped crossed bristle tufts, the bristles of which are pointed and not trimmed. It is formed by a first transverse row of tufts of bristles tipped backwards (represented by its foremost tuft 301) and a second transverse row of two tufts inclined forwardly (represented by its foremost tuft 302). The distance d x , the two transverse rows forming said double row in the longitudinal direction of the brush head from each other, is about 1 mm. The height h s of the slanted Tufts are about 13.5 mm, and the angles α and β, respectively, in which the tufts inclined forwardly and rearwardly are inclined, are about + 8 ° and about -8 °, respectively (definitions of d x , h s , α and β according to FIG. 1 ). At a distance d xx in the direction of the head portion 12 of about 8.9 mm to the first double row just described, a second, identical double row of x-shaped crossed tufts is arranged. It is formed by a third transverse row of two backward slanted tufts (represented by their foremost tuft 303) and a fourth transverse row of three forward tipped tufts (represented by their foremost tuft 304). In the four transverse rows that form the two double rows, the distances between the tufts in the transverse direction are about 4.5 mm. At a distance d a in the longitudinal direction to the head portion 12 out of about 3.2 mm from the first double row, a first middle transverse row of four vertical tufts with non-pointed and uniform height h a trimmed bristles present. At a distance d a in the longitudinal direction of the handle portion 11 out of about 3.2 mm from the second double row is a second middle transverse row of four vertical tufts with non-pointed bristles and trimmed to uniform height h a bristles present. In these middle transverse rows, the widths of the tufts in the transverse direction are about 2.9 mm and the height h a is about 10.0 mm. At a distance d b of about 3.0 mm from the first double row in the longitudinal direction of the brush head to the handle portion 11 toward an inner transverse row of four perpendicularly rising from the brush body tufts with non-pointed, trimmed to a uniform height h b bristles arranged. At a distance d b in the longitudinal direction of the brush head to the head portion 12 of about 3.0 mm from the second double row an outer transverse row of four perpendicularly rising from the brush body tufts with non-pointed, trimmed to a uniform height h b bristles arranged. In this inner and outer transverse row, the widths of the tufts in the transverse direction are about 2.3 mm and the height h b of the tufts about 10 mm. In the longitudinal direction of the brush head at a distance d c to the handle part 11 from about 5.5 mm to the first double row is an innermost transverse row of three vertical tufts with non-pointed, trimmed to a uniform height h cd bristles arranged. In the longitudinal direction of the brush head to the head portion 12 at a distance d d of about 5.4 mm to the second double row an outermost transverse row of three vertical tufts with non-pointed, trimmed to a uniform height h cd bristles arranged. The height h cd of the tufts of the innermost and outermost transverse row is about 11 mm and their distance from each other in the transverse direction about 2.3 mm. This results in a stocking of a total of 32 tufts (10 inclined tufts with pointed bristles, 16 vertical tufts with non-pointed bristles, and 6 vertical tufts with non-tapered but slightly raised tufts relative to the previous 16 tufts near the handle portion 11 and head portion 12). , All bristles have a circular cross section over their entire length; the sharpened parts of the pointed bristles are thus rotational bodies. The diameter D n of all non-sharpened bristles and the maximum diameter D z of all pointed bristles is about 0.175 mm. All tufts are of circular cross-section; the diameter of all tufts is about 1.7 mm.

Analog zu der vorstehend beschriebenen Ausführungsform können weitere Bürstenköpfe wie in der folgenden Tabelle 5 beschrieben ausgestaltet sein. In diesen weiteren Ausführungsformen sind alle numerischen Parameter, die nicht angegeben sind, wie in der vorstehend beschriebenen ersten Ausführungsform. Die Bedeutung der Variablen in den Spaltenköpfen ist gleich wie bei der vorstehend beschriebenen ersten Ausführungsform. Die Spalte "Besatzcd" gibt den Typ der Borsten in den Büscheln der besagten innersten und äussersten Querreihe an: "n" bedeutet "nicht zugespitzt, auf einheitliche Höhe getrimmt" und "z" bedeutet "zugespitzt". Tabelle 5 Ausführungsform Nr. ha hb hcd Besatzcd hs Dn Dz (mm) (mm) (mm (mm) (mm) (mm) 2 10 10 11,15 n 11,4 0,175 0,175 3 10 10 10 n 11,4 0,175 0,175 4 10 10 11 n 12,5 0,175 0,175 5 9 9 10 n 11,5 0,175 0,175 6 9 9 10 n 11,5 0,15 0,175 7 10 10 11,8 z 11,4 0,175 0,175 8 9 9 11,5 z 11,5 0,175 0,175 9 9 9 11,5 z 11,5 0,15 0,175 10 10 10 11,5 z 11,5 0,15 0,175 11 10 10 11,5 z 12,5 0,175 0,175 Analogous to the embodiment described above, further brush heads may be configured as described in Table 5 below. In these other embodiments, all numerical parameters that are not indicated are as in the first embodiment described above. The meaning of the variables in the column headers is the same as in the first embodiment described above. The column "stocking cd " indicates the type of bristles in the tufts of said innermost and outermost transverse row: "n" means "not sharpened, trimmed to uniform height" and "z" means "pointed". Table 5 Embodiment No. h a h b h cd Stocking cd h s D n D z (Mm) (Mm) (mm (Mm) (Mm) (Mm) 2 10 10 11.15 n 11.4 0,175 0,175 3 10 10 10 n 11.4 0,175 0,175 4 10 10 11 n 12.5 0,175 0,175 5 9 9 10 n 11.5 0,175 0,175 6 9 9 10 n 11.5 0.15 0,175 7 10 10 11.8 z 11.4 0,175 0,175 8th 9 9 11.5 z 11.5 0,175 0,175 9 9 9 11.5 z 11.5 0.15 0,175 10 10 10 11.5 z 11.5 0.15 0,175 11 10 10 11.5 z 12.5 0,175 0,175

Unter Verweis auf Figuren 1, 3 und 5 wird eine weitere besonders bevorzugte, zwölfte Ausführungsform des Bürstenkopfs der Erfindung beschrieben. Dieser Bürstenkopf weist eine erste Doppelreihe von schräggestellten und zugespitzten, sich x-förmig überkreuzenden Borstenbüscheln, wie bei der ersten Ausführungsform beschrieben, auf (dargestellt durch die vordersten Büschel 301, 302). Die nach hinten schräggestellte Querreihe (Büschel 301) weist zwei Büschel im Abstand in Querrichtung von etwa 4,6 mm auf und die nach vorne schräggestellte Reihe (Büschel 302) weist drei Büschel in einem Abstand in Querrichtung von ebenfalls je etwa 4,6 mm auf. Der Abstand dx zwischen der nach hinten und der nach vorne schräggestellten Querreihe in Längsrichtung des Bürstenkopfes beträgt etwa 1 mm. Die Höhe hs der schräggestellten Büschel beträgt etwa 13,5 mm, und die Winkel α bzw. β, in dem die nach vorne bzw. nach hinten schräggestellten Büschel geneigt sind, betragen etwa +8° bzw. etwa -8° (Definitionen von dx, hs, α und β gemäss Figur 1). In einem Abstand de von etwa 3,2 mm in Längsrichtung zum Griffteil 11 hin von der ersten Doppelreihe ist eine innere Querreihe von vier Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hef getrimmten Borsten angeordnet. In einem Abstand df von etwa 3,1 mm in Längsrichtung zum Kopfteil 12 hin von der ersten Doppelreihe ist eine äussere Querreihe von vier Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hef getrimmten Borsten angeordnet. In der inneren und äusseren Querreihe betragen die Abstände der Büschel voneinander in Querrichtung etwa 2,9 mm und die Höhen hef etwa 10 mm. In einem Abstand dg von etwa 5,7 mm in Längsrichtung zum Griffteil 11 hin von der ersten Doppelreihe ist eine weitere innere Querreihe von vier Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hgh getrimmten Borsten angeordnet. In einem Abstand dh von etwa 5,6 mm in Längsrichtung zum Kopfteil 12 hin von der ersten Doppelreihe ist eine weitere äussere Querreihe von vier Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hgh getrimmten Borsten angeordnet. I der weiteren inneren Querreihe und der weiteren äusseren Querreihe betragen die Abstände der Büschel in Querrichtung etwa 2,9 mm und die Höhe hgh etwa 11 mm. In einem Abstand di von etwa 8,2 mm in Längsrichtung zum Griffteil 11 hin von der ersten Doppelreihe ist eine innerste Querreihe von drei Büscheln mit nicht zugespitzen, auf eine einheitliche Höhe hij getrimmten Borsten angeordnet. In einem Abstand dj von etwa 8,0 mm in Längsrichtung zum Kopfteil 12 hin von der ersten Doppelreihe ist eine äusserste Querreihe von drei Büscheln mit nicht zugespitzten, auf eine einheitliche Höhe hij getrimmten Borsten angeordnet. In der innersten und äussersten Querreihe betragen die Abstände der Büschel in Querrichtung etwa 2,4 mm und die Höhe hij etwa 11,5 mm. Dies ergibt einen Besatz von insgesamt 27 Büschel (5 schräggestellte Büschel mit zugespitzten Borsten, 8 senkrechte Büschel mit nicht zugespitzten Borsten, 8 senkrechte Büschel mit nicht zugespitzten, aber gegenüber den vorherigen 8 Büscheln etwas erhöhten Büscheln, und 6 senkrechte, noch etwas weiter erhöhte Büschel mit nicht zugespitzten Borsten benachbart zum Griffteil 11 und beim Kopfteil 12). Alle Borsten weisen über ihre gesamte Länge einen kreisförmigen Querschnitt auf; die zugespitzten Teile der zugespitzten Borsten sind also Rotationskörper. Der Durchmesser Dn aller nicht zugespitzten Borsten und der maximale Durchmesser Dz aller zugespitzten Borsten beträgt etwa 0,175 mm. Alle Büschel sind von kreisförmigem Querschnitt; der Durchmesser aller Büschel beträgt etwa 1,7 mm.In reference to FIGS. 1 . 3 and 5 Another particularly preferred twelfth embodiment of the brush head of the invention will be described. This brush head has a first double row of slanted and pointed bristle tufts crossing over in an X-shape as described in the first embodiment (represented by the foremost tufts 301, 302). The rearwardly slanted transverse row (tuft 301) has two tufts spaced transversely of about 4.6 mm and the forward slanted row (tuft 302) has three tufts at a transverse spacing of about 4.6 mm each , The distance d x between the backward and the forward slanted transverse row in the longitudinal direction of the brush head is about 1 mm. The height h s of the inclined tufts is about 13.5 mm, and the angles α and β, respectively, in which the tufts inclined forwardly and rearwardly are inclined, are about + 8 ° and about -8 °, respectively (definitions of d x , h s , α and β according to FIG. 1 ). At a distance d e of about 3.2 mm in the longitudinal direction of the handle part 11 from the first double row, an inner transverse row of four tufts with non-pointed, h ef trimmed to a uniform height hef bristles arranged. At a distance d f of about 3.1 mm in the longitudinal direction to the head part 12 from the first double row, an outer transverse row of four tufts with non-pointed, h ef trimmed bristles is arranged. In the inner and outer transverse row, the distances between the tufts in the transverse direction are approximately 2.9 mm and the heights h ef approximately 10 mm. At a distance d g of about 5.7 mm in the longitudinal direction of the handle part 11 from the first double row, a further inner transverse row of four tufts with non-pointed bristles trimmed to a uniform height h gh is arranged. At a distance d h of about 5.6 mm in the longitudinal direction of the head part 12 from the first double row, a further outer transverse row of four tufts with non-pointed bristles trimmed to a uniform height h gh is arranged. I the other inner transverse row and the other outer transverse row are the distances of the tufts in the transverse direction about 2.9 mm and the height h gh about 11 mm. At a distance d i of about 8.2 mm in the longitudinal direction of the handle part 11 from the first double row, an innermost transverse row of three tufts with non-pointed bristles trimmed to a uniform height h ij is arranged. At a distance d j of about 8.0 mm in the longitudinal direction to the head part 12 from the first double row, an outermost transverse row of three tufts with non-pointed bristles trimmed to a uniform height h ij is arranged. In the innermost and outermost transverse row the distances between the tufts in the transverse direction amount to about 2.4 mm and the height h ij about 11.5 mm. This results in a stocking of a total of 27 tufts (5 inclined tufts with pointed bristles, 8 vertical tufts with non-pointed bristles, 8 vertical tufts with not pointed, but compared to the previous 8 tufts slightly raised tufts, and 6 vertical, still a little further increased tufts with non-pointed bristles adjacent to the handle portion 11 and the head portion 12). All bristles have a circular cross section over their entire length; the sharpened parts of the pointed bristles are thus rotational bodies. The diameter D n of all non-sharpened bristles and the maximum diameter D z of all pointed bristles is about 0.175 mm. All tufts are of circular cross-section; the diameter of all tufts is about 1.7 mm.

Zu der vorstehend beschriebenen zwölften Ausführungsform analog können weitere Bürstenköpfe wie in der folgenden Tabelle 6 beschrieben ausgestaltet sein. In diesen weiteren Ausführungsformen sind alle numerischen Parameter, die nicht angegeben sind, gleich wie in der vorstehend beschriebenen zwölften Ausführungsform. Die Bedeutung der Variablen in den Spaltenköpfen ist gleich wie bei der vorstehend beschriebenen zwölften Ausführungsform. Tabelle 6 Ausführungsform Nr. hef hgh hij hs Dn Dz (mm) (mm) (mm) (mm) (mm) (mm) 13 10 11 11,5 11,4 0,175 0,175 14 10 11 11,5 12,5 0,175 0,175 15 9 10 10,5 11,5 0,175 0,175 16 9 10 10,5 11,5 0,15 0,175 17 9 9 10 11,5 0,15 0,175 18 10 10 11 12,5 0,175 0,175 Analogously to the twelfth embodiment described above, further brush heads may be configured as described in Table 6 below. In these other embodiments, all numerical parameters that are not indicated are the same as in the twelfth embodiment described above. The meaning of the variables in the column headers is the same as in the twelfth embodiment described above. Table 6 Embodiment No. h ef h gh h ij h s D n D z (Mm) (Mm) (Mm) (Mm) (Mm) (Mm) 13 10 11 11.5 11.4 0,175 0,175 14 10 11 11.5 12.5 0,175 0,175 15 9 10 10.5 11.5 0,175 0,175 16 9 10 10.5 11.5 0.15 0,175 17 9 9 10 11.5 0.15 0,175 18 10 10 11 12.5 0,175 0,175

In den Figuren 6, 7 bzw. 8 sind die Reinigungsleistungen, die mit verschiedenen Bürstenköpfen bei horizontaler, vertikaler bzw. kreisförmiger Reinigungsbewegung erzielt wurden, gezeigt. Bei diesen Tests wurden die Zähne eines Modells eines Oberkiefer-Sextanten (mit 3 Backenzähnen, 2 Vorbackenzähnen und 1 Schneidezahn) zunächst schwarz eingefärbt und dann mit einer Titandioxidpaste (25 g/v in 26%igem Ethanol) weiss übertüncht. Nach einem standardisierten Bürstvorgang mit den zu testenden Bürstenköpfen von 1 min Dauer mit 2,45 Newton Anpresskraft wurde der Prozentsatz der Zahnflächen, der von der Titandioxidpaste befreit worden war, bestimmt. Bei der horizontalen Reinigung bestand der standardisierte Bürstvorgang aus 60 Hin- und Herbewegungen mit einer Amplitude von 30 mm; bei der vertikalen Reinigung bestand er aus 60 Auf- und Abwärtsbewegungen mit einer Amplitude von 8 mm; und bei der kreisförmigen Reinigung bestand er aus 60 Kreisen mit Radius von 4 mm bei gleichzeitigen 16 horizontalen Hin- und Herbewegungen mit Amplitude von 30 mm.In the FIGS. 6 . 7 and Fig. 8 are the cleaning performances achieved with different brush heads in horizontal, vertical and circular cleaning movement, respectively. In these tests, the teeth of a maxillary sextant model (with 3 molars, 2 prebend teeth and 1 incisor) were first stained black and then whitewashed with a titanium dioxide paste (25g / v in 26% ethanol). After a standardized brushing process with the brush heads to be tested of 1 minute duration with 2.45 newtons of contact force, the percentage of tooth surfaces freed from the titanium dioxide paste was determined. For horizontal cleaning, the standardized brushing process consisted of 60 reciprocating motions with an amplitude of 30 mm; in vertical cleaning it consisted of 60 up and down movements with an amplitude of 8 mm; and in the circular cleaning it consisted of 60 circles of radius 4 mm with 16 horizontal reciprocating movements with amplitude of 30 mm at the same time.

Es wurden für jeden getesteten Bürstenkopftyp und jeden der drei Reinigungstests 4 Exemplare des Bürstenkopfs an je 4 Oberkiefer-Sextanten getestet. Die Mittelwerte der totalen erzielten Reinigungsleistungen für den horizontalen, vertikalen bzw. kreisförmigen Reinigungstest (in Prozent der gereinigten Zahnfläche, mit Streuung) sind in den Figuren 6, 7 bzw. 8 angegeben. Auf der x-Achse der drei Figuren sind die Nummern der vorstehend beschriebenen Bürstenköpfe angegeben; mit "Vergleich" ist die entsprechende Reinigungsleistung des Bürstenkopfs einer vorbekannten, durch die Anmelderin vertriebenen Bürste (Elmex Inter X Medium) aufgeführt.For each brushhead type tested and each of the three cleaning tests, 4 pieces of the brushhead were tested on 4 maxillary sextants each. The average values of the total cleaning performance achieved for the horizontal, vertical and circular cleaning tests (as a percentage of the cleaned tooth surface, with scattering) are given in FIGS FIGS. 6 . 7 or 8 indicated. On the x-axis of the three figures, the numbers of the brush heads described above are given; with "comparison" is the corresponding cleaning performance of the brush head of a previously known, distributed by the applicant brush (Elmex Inter X medium) listed.

Claims (18)

  1. A brush head (1) for a toothbrush, which brush head has a grip part (11), a head part (12) and a bristle surface with bristle tufts (201, 202, 203, 204, 301, 302, 303, 304, 401, 402, 501, 502, 601, 602, 701, 702) inserted therein and arranged in transverse rows running transversely with respect to the longitudinal direction of the bristle surface, characterised in that that in each transverse row of tufts either only forwardly inclined tufts (302, 304) with solely tapered bristles or only rearwardly inclined tufts with solely tapered bristles (301, 303) or only bristle tufts projecting vertically out of the bristle surface are present, whereby one or two double rows of tufts crossing over in an x-shaped manner with tapered bristles are present, which are each formed by a first transverse row of rearwardly inclined tufts (301, 303) with solely tapered bristles with a height hs of 13.0 to 14.0 mm and a second transverse row, adjacent to this first transverse row in the direction of the grip part (11) at a distance dx of 0.7 to 1.3 mm, of forwardly inclined tufts (302, 304) with solely tapered bristles with a height hs of 13.0 to 14.0 mm, offset with respect to the tufts of the first transverse row in the transverse direction, such that the tufts of the first and second transverse rows form the double row of tufts crossing over in an x-shaped manner, whereby the tufts of the transverse row with forwardly inclined tufts are inclined forwardly at an angle α of +1 to +10° with respect to a line standing perpendicularly to the bristle surface; or the tufts of the one transverse row with rearwardly inclined tufts are inclined rearwardly at an angle β of -1 to -10° with respect to a line standing perpendicularly to the bristle surface, and in that at least one transverse row of tufts projecting vertically out of the bristle surface (201, 202, 203, 204, 401, 402, 501, 502, 601, 602, 701, 702) with non-tapered bristles is present.
  2. The brush head of claim 1, characterised in that the tufts of the transverse row with forwardly inclined tufts are inclined forwardly at an angle α of +7 to +9°, more preferably of about +8°, with respect to a line standing perpendicularly to the bristle surface; or in that the tufts of the transverse row with rearwardly inclined tufts are inclined rearwardly at an angle β of -7 to -9°, more preferably of about -8°, with respect to a line standing perpendicularly to the bristle surface.
  3. The brush head of claims 1 or 2, characterised in that it has two double rows of tufts crossing over in an x-shaped manner in the form of a first double row and a second double row, whereby said second double row is arranged at a distance dxx from said first double row in the longitudinal direction of the brush head toward the head part (12), whereby this distance dxx is preferably 8.0 to 10.0 mm, more preferably 8.5 to 9.5 mm and particularly preferably about 8.9 mm.
  4. The brush head of claim 3, characterised in that it has a first middle transverse row of non-tapered tufts projecting vertically out of the bristle surface with bristles trimmed to a uniform height ha, which is arranged at a distance da from said first double row in the longitudinal direction of the brush head toward the head part (12), and has a second middle transverse row of non-tapered tufts projecting vertically out of the bristle surface and having bristles trimmed to a uniform height ha, which is arranged at a distance da from said second double row in the longitudinal direction of the brush head toward the grip part (11), whereby the distance da is preferably 2.5 to 4.0 mm, more preferably 3.0 to 3.5 mm and particularly preferably about 3.2 mm.
  5. The brush head of claim 4, characterised in that the height ha of the tufts of said middle transverse rows is 9.0 to 11.0 mm and preferably 9.5 to 10.5 mm.
  6. The brush head of one of claims 3 to 5, characterised in that it has an inner transverse row of non-tapered tufts projecting vertically out of the bristle surface with bristles trimmed to a uniform height hb, which is arranged at a distance db from said first double row in the longitudinal direction of the brush head toward the grip part (11), and has an outer transverse row of non-tapered tufts projecting vertically out of the bristle surface and having bristles trimmed to a uniform height hb, which is arranged at a distance db from said second double row in a longitudinal direction of the bristle carrier toward the head part (12), whereby the distance db is preferably 2.5 to 3.5 mm, more preferably 2.7 to 3.3 mm and particularly preferably about 3.0 mm.
  7. The brush head of claim 6, characterised in that the height hb of the tufts of said inner and outer transverse rows is 9.0 to 11.0 mm, preferably 9.5 to 10.5 mm and more preferably about 10.0 mm.
  8. The brush head of claim 6 or 7, characterised in that it has an innermost transverse row of tufts projecting vertically out of the bristle surface and having tapered or non-tapered bristles, which is arranged at a distance dc from said first double row in the longitudinal direction of the bristle carrier toward the grip part (11), whereby the distance dc is preferably 5.0 to 6.0 mm, more preferably 5.3 to 5.7 mm and particularly preferably about 5.5 mm, and has an outermost transverse row of tufts projecting vertically out of the bristle surface and having tapered or non-tapered bristles, which is arranged at a distance dd from said second double row in the longitudinal direction of the bristle carrier toward the head part (12), whereby the distance dd is preferably 5.0 to 6.0 mm, more preferably 5.2 to 5.6 mm and particularly preferably about 5.5 mm.
  9. The brush head of claim 8, characterised in that the bristles of the tufts of said innermost and outermost transverse rows are non-tapered, and the height hcd of the tufts is 10.0 to 12.0 mm and preferably 10.5 to 11.5 mm.
  10. The brush head of claim 8, characterised in that the bristles of the tufts of said innermost and outermost transverse rows are tapered, and the height hcd of the tufts is 10.5 to 12.5 mm and preferably 11.0 to 12.0 mm.
  11. The brush head of claim 1, characterised in that it has one double row of tufts crossing over in an x-shaped manner and an inner transverse row of tufts projecting vertically out of the bristle surface with non-tapered bristles, which is arranged at a distance de from said double row in the longitudinal direction of the brush head toward the grip part (11), and has an outer transverse row of tufts projecting vertically out of the bristle surface with non-tapered bristles, which is arranged at a distance df from said double row in the longitudinal direction of the brush head toward the head part (12), whereby the distances de and df are preferably 3.0 to 4.5 mm and more preferably 3.0 to 4.0 mm, and whereby de is particularly preferably about 3.2 mm and df is particularly preferably about 3.1 mm.
  12. The brush head of claim 11, characterised in that the tufts of said inner and outer transverse rows are trimmed to a uniform height hef of 9.0 to 11.0 mm and preferably 9.0 to 10.0 mm.
  13. The brush head of claim 11 or 12, characterised in that it has a further inner transverse row of non-tapered tufts projecting vertically out of the bristle surface, which is arranged at a distance dg from said first double row in the longitudinal direction of the bristle carrier toward the grip part (11), and has a further outer transverse row of non-tapered tufts projecting vertically out of the bristle surface, which is arranged at a distance dh from said first double row in the longitudinal direction of the bristle carrier toward the head part (12), whereby the distances dg and dh are preferably 5.0 to 6.5 mm and more preferably 5.5 to 6.0 mm, and dg is particularly preferably about 5.7 mm and dh is particularly preferably about 5.6 mm.
  14. The brush head of claim 13, characterised in that the tufts of the further inner transverse row and further outer transverse row are trimmed to a uniform height hgh of 10.0 to 12.0 mm and preferably 10.0 to 11.0 mm.
  15. The brush head of claim 13 or 14, characterised in that it has an innermost transverse row of non-tapered tufts projecting vertically out of the bristle surface, which is arranged at a distance di from said first double row in the longitudinal direction of the bristle carrier toward the grip part (11), and has an outermost transverse row of non-tapered tufts projecting vertically out of the bristle surface, which is arranged at a distance dj from said first double row in the longitudinal direction of the bristle carrier toward the head part (12), whereby the distances di and dj are preferably 7.5 to 9.0 mm and more preferably 8.0 to 8.5 mm, and whereby di is particularly preferably about 8.2 mm and dj about 8.0 mm.
  16. The brush head of claim 15, characterised in that the tufts of said innermost and outermost transverse rows are trimmed to a uniform height hij of 10.5 to 12.5 mm and preferably 10.5 to 11.5 mm.
  17. The brush head of one of claims 1 to 16, characterised in that all tapered bristles consist of a poly(C2-C8)alkyleneterephthalate, in particular of polybutyleneterephthalate, and in that all non-tapered bristles consist of a polyamide produced from an unbranched (C2-C8)-1, ω-diamine and an unbranched (C4-C14)-1,ω-dicarboxylic acid, in particular of polyhexamethylenedodecanamide.
  18. A toothbrush comprising a brush head of one of claims 1 to 17.
EP06761256A 2005-08-08 2006-08-03 Toothbrush comprising inclined and pointed bristles Active EP1912532B8 (en)

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SI200630614T SI1912532T2 (en) 2005-08-08 2006-08-03 Toothbrush comprising inclined and pointed bristles
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PCT/CH2006/000405 WO2007016802A1 (en) 2005-08-08 2006-08-03 Toothbrush comprising inclined and pointed bristles

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EP (1) EP1912532B8 (en)
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CN101299943B (en) 2012-12-05
PT1912532E (en) 2010-04-14
CA2618383A1 (en) 2007-02-15
CN101299943A (en) 2008-11-05
PL1912532T3 (en) 2010-10-29
US8239996B2 (en) 2012-08-14
CA2618383C (en) 2014-04-22
EP1912532B8 (en) 2013-02-20
BRPI0614152B1 (en) 2018-01-09
BRPI0614152A2 (en) 2012-11-20
RU2401030C2 (en) 2010-10-10
PL1912532T5 (en) 2013-09-30
WO2007016802A1 (en) 2007-02-15
ATE454060T1 (en) 2010-01-15
ES2339385T5 (en) 2013-05-06
EP1912532B1 (en) 2010-01-06
ES2339385T3 (en) 2010-05-19
EP1912532A1 (en) 2008-04-23
IL188246A (en) 2011-12-29
SI1912532T2 (en) 2013-06-28
IL188246A0 (en) 2008-04-13
DE202006020598U1 (en) 2009-02-26
DE502006005864D1 (en) 2010-02-25
US20080271276A1 (en) 2008-11-06
SI1912532T1 (en) 2010-09-30
RU2008109020A (en) 2009-10-10

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