EP1558111A1 - Brosse a dents - Google Patents

Brosse a dents

Info

Publication number
EP1558111A1
EP1558111A1 EP03775260A EP03775260A EP1558111A1 EP 1558111 A1 EP1558111 A1 EP 1558111A1 EP 03775260 A EP03775260 A EP 03775260A EP 03775260 A EP03775260 A EP 03775260A EP 1558111 A1 EP1558111 A1 EP 1558111A1
Authority
EP
European Patent Office
Prior art keywords
wall
flaps
toothbrush according
brush head
flap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03775260A
Other languages
German (de)
English (en)
Other versions
EP1558111B1 (fr
Inventor
Richard Huw Davies
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=29724567&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1558111(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP03775260A priority Critical patent/EP1558111B1/fr
Publication of EP1558111A1 publication Critical patent/EP1558111A1/fr
Application granted granted Critical
Publication of EP1558111B1 publication Critical patent/EP1558111B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • A46B15/0081—Brushes with a scraper, e.g. tongue scraper
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/006—Antimicrobial, disinfectant bristles, handle, bristle-carrier or packaging
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to a toothbrush comprising resilient wall-like flaps.
  • WO 98/18364 describes a toothbrush with combination of bristles, soft cleansing pad and/or polishing fingers.
  • the polishing fingers are preferably made of a thermoplastic elastomer and the soft polishing pad is an absorbent pad capable of providing an improved cleaning benefit.
  • GB-A-2 040 161 (Vowles) describes an improved toothbrush comprising, in addition to conventional bristles tufts, a gum massaging member located outermost on opposite sides of the brushing surface.
  • WO 98/22000 discloses a toothbrush comprising a plaque removing member being formed from a mixture of relatively soft elastomeric material and particles of an abrasive material.
  • the present invention provides a toothbrush comprising a handle and a bristle-bearing head attached thereto, said head comprising a bristle-bearing face and an opposite face, said opposite face comprising an array of resilient wall-like massaging flaps.
  • the flaps on the reverse face of the head provide their benefit either while the brush is being used conventionally, i.e. during regular toothbrushing, or even as a specific act upon the oral care surfaces, e.g. as a polishing element on the tooth or a scraping effect on the tongue.
  • the flaps comprise a resilient material such as rubber, plastic or an elastomer, more preferably a thermoplastic elastomer such as those well known in the art.
  • Rubbery flaps effect a gentler action on the oral care surfaces with massaging the buccal surfaces during regular toothbrushing or even massagin the gums as a separate action.
  • the head of the toothbrush will typically comprise a substantially hard material in which are embedded the bristles.
  • Typical materials for the brush head include polyolefin such as polypropylene or acrylonitrile and nylon.
  • the massaging flaps of the invention may thus be materially part of the brush head or independent therefrom. Where they do comprise different materials they may be bonded to each other to secure the flaps to the brush head. Bonding may be mechanical, chemical or otherwise. Mechanical bonding may be by way of an independent adhesive or by apertures in the brush head through which protrude the flaps . Chemical bonding may be by way of including similar elements in each of the materials.
  • thermoplastic elastomers comprise some degree of polyolefin. When melted the polyolefine element of the thermoplastic elastomer will bond chemically with a polyolefin component of the head. Further bonding methods include welding and sonication.
  • the flaps may be linked to one another or be separate from one another. It is preferred that they linked to one another to facilitate manufacture: they can thus be moulded in one step. Where they are linked to one another it is preferred that they are attached to a common base plate which itself is attached to the head.
  • the base plate may cover from 25 to 100% of the opposite face of the brush head, preferably from 25 to 95% or whatever area is required to be covered.
  • a separate base plate allows separate manufacture of the brush head and flaps. This allows for changes in the design of either to be made quickly and efficiently. Further, it allows for the same base plate to be adapted to any new design of toothbrush. Where the base plate is detachable from the toothbrush head it also allows several base plates to be available to the consumer such that different plates can be used for different circumstances. For example, one can be used for massaging the gums while another is used for polishing the teeth or scraping the tongue after toothbrushing . Where a base plate is employed it is preferred that the base plate comprises a bulge in the centre to extend the flaps further in the centre without impacting their structural integrity and efficacy, i.e. the flaps physical dimension are the same but they are allowed to extend further in the centre because of the bulged base plate.
  • a bulge can be provided by contouring the opposite face of the brush head.
  • the flaps will extend from the brush head by a maximum distance d.
  • This maximum distance d is the average of the maximum distances by which each of the flaps extend from the brush head.
  • the value of d typically ranges from 0.1 to 2 mm.
  • the bulge has a depth from the brush head of from 0.1 to 3d. This is to ensure that the correct dimensions are being maintained to provide the desired sensorial effect. Where d is large the brush's reverse face has a pronounced bulge and exhibits a focused effect on the oral cavity surfaces, e.g. it allows for a more targeted effect whether polishing, massaging or scraping, etc.
  • the brush may also comprise the same resilient material in the handle or the head.
  • the resilient material may be used to provide flexibility to the head and in the handle to provide an improved grip.
  • the resilient material may thus be linked to common areas such that the material is provides to the brush in one injection mould step.
  • the link between the sections may be hidden from view by way of channels through the material making the rest of the brush or by visibly present channels on the brush surface.
  • the flaps comprise a thermoplastic elastomer (TPE)
  • TPE thermoplastic elastomer
  • Shore A hardness of the TPE is preferably from 15 to 65, more preferably from 25 to 55.
  • the flaps are separated from one another by a distance equal to from 0.5d to 2d, preferably from 0.75d to 1.75d. This specific distancing with respect to height provides the flaps with a superior sensorial effect on the buccal lining during use. If the flaps are too far apart they will be sensed individually and if they are too close to one another their special sensorial effect will not be perceived at all.
  • the flaps may extend along the brush head in any direction it is preferred that the wall-like flaps extend along the brush head in a direction the main component of which is substantially transverse to the general longitudinal axis of the brush head. This enables the flaps to exert their sensorial effect on the buccal lining when the brush is being moved along the teeth from one tooth to an adjacent tooth.
  • the flaps may also extend in a curved line along the brush head. This enables the sensorial effect to be provided should the user brush with a circular motion. Such a curved line is preferably arcuate and more preferably generally sinusoidal . Where the flaps extend along the brush head in more than one direction it is preferred that at least 50%, more preferably 75% of the flaps extend n a similar fashion along the brush head. Should too many directions be used it may become difficult for the user to distinguish the individual directions used and this means that the massaging effect becomes lessened.
  • the flaps of the toothbrush will also have a width which may vary along the flap and may be different if measured at the base or tip, for example, the flap may be tapered away from the base.
  • the average width a of the flaps measured at a mid point along each flap's length is from 0.1 to 0.7d, preferably from 0.15 to 0.5d. This enables the width of the flap to be detected during use in the mouth and against the buccal lining which is not so sensitive as other parts of the oral cavity. If the flap is too thick it will be perceived badly during use and if it is too thin it will deform too easily and will not be sensed at all.
  • the maximum width of any flap along its entire length is from 0.1 to 1.5a, preferably from 0.4 to 1.2a. This provides for an optimum effect during use and also makes the product easier to manufacture.
  • At least one flap extends for a distance equal to 1 to 20d, preferably from 5 to 18d.
  • the ratio between the distance run along the brush head and the distance extended from the head can be important in establishing the optimum technical characteristics of the flap. Should the flap not run for a reasonable length along the brush head there is a danger that it will deform too easily when brushed at an acute angle along the buccal lining. A flap of considerable length compared with its distance from the next flap provides a much improved effect.
  • At least one flap slopes towards the brush head at its edges. This reduces any harsh sensorial effect in having sharp edges rubbing against the oral cavity surfaces .
  • the flaps of the present invention may comprise an abrasive incorporated therein.
  • Suitable abrasives include perlite, silica, chalk, calcined alumina and mixtures thereof. Such abrasives will be incorporated at from 0.1 to 3% by weight.
  • the flaps of the present invention may comprise an oral care benefit agent incorporated therein for delayed release during use.
  • oral care benefit agents include anti-caries agents, anti- tartar agents, flavours, anti-malodour agents etc.
  • At least one flap comprises a rounded tip portion for reducing any sharp sensorial effect during use.
  • a sharpened edge can be provided for those consumers who prefer a harsh sensorial experience. These sharpened tips may be directioned, e.g. towards or away from the tip of the brush head.
  • figure 1 is a side elevation of a toothbrush according to the invention.
  • FIGS. 2 to 7 are end-on views of a brush according to the invention.
  • FIGS. 8 and 9 are side elevations of a toothbrush according to the invention.
  • figure 10 is a side elevation of a flexible headed toothbrush according to the invention.
  • FIGS 11 to 15 are plan views of the resilient flaps on toothbrushes according to the invention.
  • figure 16 is a side elevation of a brush according to the invention.
  • figure 17 is a plan view of a head according to the invention.
  • figure 1 shoes a toothbrush (1) comprising a handle (2) and a bristle-bearing head (3) attached thereto, said head (3) comprising a bristle-bearing face (4) and an opposite face (5) , said opposite face (5) comprising an array of resilient wall-like massaging flaps (6).
  • Figures 2 to 7 disclose a similar brush head comprising an array of flaps, only the end-on flap (6) being viewable.
  • the flap is symmetrical, extends a distance d from the brush head, and extends just short of the entire width of the brush head.
  • the flap slopes at its edges.
  • the flap is short in the middle than at the edges.
  • the tip edge of the flap is asymmetrical.
  • the flap extends only for about half the width of the head.
  • Figure 8 discloses a brush head comprising an array of flaps.
  • the array comprising flaps of a graduated nature extending further from the brush head at the centre of the array than at the edges.
  • Figure 9 discloses a brush head comprising an array of flaps.
  • the array comprising flaps of a graduated nature extending further from the brush head at the tip of the head and extending progressively less from the head towards the handle .
  • Figure 10 discloses a flexible headed toothbrush comprising a pair of oppositely facing head sections (3a, 3b) linked by a flexible region (7) .
  • Each head section (3a, 3b) has on its opposite face an array of wall-like flaps (6a, 6b).
  • Figures 11 to 14 disclose various arrangement of flaps on the opposite face. In figure 11 the flaps are arcuate. In figure 12 the flaps are aranged transverse the general longitudinal axis of the toothbrush. In figure 13 the flaps are graduated being longer at the tip and getting progressively shorter towards the handle end of the brush head. In figure 14 the flaps are angled.
  • the brush head comprising a pair of oppositely facing sections each comprising an array of flaps (6a, 6b).
  • the flaps on the tip section of the brush head have flaps arranged along the general longitudinal axis of the toothbrush while in the main section of the brush head the flaps (6b) are arranged transverse the same axis.
  • the flaps (6) are arranged on a support base (8) which bulges in the middle thus extending the distance from the brush head without weakening the integrity of the flaps in the centre.
  • Figure 17 shows a plan view of a brush head comprising a support base (8) upon which are located the flaps (6) .
  • Figure 18 shows a flap (18a) with a wide base anchoring it to the brush head. Flap 18b is adhered straight to the base by an adhesive or otherwise, while flap (18c) is attached to a base plate which is itself adhered to the head.
  • Flap (19a) has a rounded end
  • flap (19b) has a sharpened tip angled to one side
  • flap (19c) has a centrally sharpened tip.

Abstract

L'invention concerne une brosse à dents comprenant un manche et une tête porteuse de poils fixée audit manche. Cette tête est constituée d'une face porteuse de poils et d'une face opposée comprenant un groupe de nervures de massage similaires à des parois résiliantes.
EP03775260A 2002-11-06 2003-10-30 Brosse a dents Revoked EP1558111B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03775260A EP1558111B1 (fr) 2002-11-06 2003-10-30 Brosse a dents

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP02257689 2002-11-06
EP02257689 2002-11-06
EP03775260A EP1558111B1 (fr) 2002-11-06 2003-10-30 Brosse a dents
PCT/EP2003/012065 WO2004041025A1 (fr) 2002-11-06 2003-10-30 Brosse a dents

Publications (2)

Publication Number Publication Date
EP1558111A1 true EP1558111A1 (fr) 2005-08-03
EP1558111B1 EP1558111B1 (fr) 2011-09-14

Family

ID=29724567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03775260A Revoked EP1558111B1 (fr) 2002-11-06 2003-10-30 Brosse a dents

Country Status (11)

Country Link
US (1) US20040134007A1 (fr)
EP (1) EP1558111B1 (fr)
CN (1) CN1711045A (fr)
AT (1) ATE524091T1 (fr)
AU (1) AU2003283323A1 (fr)
BR (1) BR0314503A (fr)
DE (2) DE10351098A1 (fr)
ES (1) ES2373227T3 (fr)
GB (1) GB2391462B (fr)
PL (1) PL204426B1 (fr)
WO (1) WO2004041025A1 (fr)

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Also Published As

Publication number Publication date
DE20316815U1 (de) 2004-02-19
DE10351098A1 (de) 2004-06-09
PL204426B1 (pl) 2010-01-29
WO2004041025A1 (fr) 2004-05-21
BR0314503A (pt) 2005-07-26
US20040134007A1 (en) 2004-07-15
GB0325429D0 (en) 2003-12-03
ES2373227T3 (es) 2012-02-01
CN1711045A (zh) 2005-12-21
PL375187A1 (en) 2005-11-28
EP1558111B1 (fr) 2011-09-14
AU2003283323A1 (en) 2004-06-07
GB2391462A (en) 2004-02-11
ATE524091T1 (de) 2011-09-15
GB2391462B (en) 2004-12-22

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