WO1996038068A1 - Brosse a dents - Google Patents

Brosse a dents Download PDF

Info

Publication number
WO1996038068A1
WO1996038068A1 PCT/EP1996/002310 EP9602310W WO9638068A1 WO 1996038068 A1 WO1996038068 A1 WO 1996038068A1 EP 9602310 W EP9602310 W EP 9602310W WO 9638068 A1 WO9638068 A1 WO 9638068A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic
toothbrush
handle
brush unit
main brush
Prior art date
Application number
PCT/EP1996/002310
Other languages
German (de)
English (en)
Inventor
Berthold Meyer
Gerd BRÖCKER
Original Assignee
M + C Schiffer Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by M + C Schiffer Gmbh filed Critical M + C Schiffer Gmbh
Publication of WO1996038068A1 publication Critical patent/WO1996038068A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0062—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being flexible or resilient during use
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0062—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being flexible or resilient during use
    • A46B5/007—Inserts made of different material, e.g. springs, plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • B29K2083/005—LSR, i.e. liquid silicone rubbers, or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/42—Brushes
    • B29L2031/425—Toothbrush

Definitions

  • the invention relates to a toothbrush with a bristle holder receiving the bristle field and a handle attached to it, made from a hard, compact plastic component that has the required strength properties, the brush base having at least one recess in the area of the handle. which is at least largely filled with a softer, elastically deformable plastic component.
  • a so-called brush base body is injection molded from a first, compact plastic, in particular polypropylene, which has the required strength properties.
  • This plastic is generally colored in a muted manner, since polypropylene is a partially crystalline material which is natural in color and therefore not transparent, but only translucent.
  • This brush base body has a recess on its front side, but usually also on its rear side, the same being connected to one another by at least one channel when two recesses are arranged.
  • the second plastic usually a thermoplastic elastomer on olefin or on, is then placed in this recess Injection molded styrene base.
  • This softer, elastically deformable plastic component is intended to significantly improve the handle properties of a toothbrush. Due to the plastic used, the hardness of the injected plastic component is generally in the range between 60 and 90 Shore A. This, but relatively high hardness improves the grip of a toothbrush, but is still often regarded as unsatisfactory . In order to noticeably improve this grip, it is known to provide the outer area of the softer, elastically deformable plastic component with small, nub-like projections which can be deformed better due to their small cross-section.
  • the invention is therefore based on the object of creating a toothbrush which has a highly transparent brush base and in which the hardness of the second plastic is so low that it can be deformed with the finger.
  • the material of the brush base body should form a good adhesive bond with the second plastic component.
  • the brush body made of a highly transparent plastic with a light transmission of at least 80% and a haze below 4% and the soft plastic made of a thermoplastic elastomer with a hardness of less than 60 Shore A. consists.
  • a particularly good bond between the two plastic components is achieved and the second plastic component can already be elastically deformed with little finger pressure.
  • the brush base has a particularly good visual appearance due to its high transparency. Both plastic components meet the health regulations applicable to toothbrushes.
  • Fig. 1 is an elevation of a toothbrush according to the
  • FIG. 2 shows a further embodiment of a toothbrush.
  • a toothbrush 1 which consists of a handle 2 and an adjoining bristle carrier 3, a bristle field 4, which is only indicated, being formed in the region of the bristle carrier 3.
  • the bristle carrier 3 and the handle 2 form a so-called brush base 5.
  • a recess 6 extending in the longitudinal direction of the handle 2 is provided in the region of the handle 2 on the front side of the brush base body 5 drawn laterally.
  • This recess 6 is laterally delimited by edges 7. Lead from this recess in the illustrated embodiment three channels 8 to the back of the brush base body 5 or the handle 2 and there merge into a smaller recess 9. This means that there are three small cutouts 9 on the rear side of the handle 2.
  • the recess 6 extends over a considerably greater length than in the figure 1. From there, three channels 8 also lead to the rear of the base body 5 of the brush or the handle 2 and go there in a common recess 9 over.
  • the brush base body 5 is now injected in a first shape, the recess 6 and 9 being produced with the channels 8 in the brush base body 5 or in the region of the handle 2 and thus remaining free.
  • a highly transparent plastic for example polymethyl methacrylate, is used as the material for this brush base body 5, which has a light transmission of at least 80% and a haze of less than 4%.
  • this brush base body 5 is inserted, either before or after it is bristled, into a further injection mold which covers the cutouts 6 and 9 with the channels 8.
  • This second injection mold opposite the cutouts 6 and 9, also has cutouts which, with the cutouts 6 and 9 of the basic brush body 5, add up to cutouts or free spaces with a larger cross section.
  • the free spaces present in this second mold are the recesses 6 and 9 and the channels 8, are sprayed with a soft plastic component made of a thermoplastic tical elastomer, for example based on styrene-butadiene, with a hardness less than 60 Shore A.
  • This second, soft plastic component connects, even with small cross-sections and low hardness, firmly to the plastic of the brush body 5 and gives the toothbrush 1 in the region of the handle 2, in the exemplary embodiment shown where the handle 2 grips between the thumb and index finger excellent grip, which is noticeable in that the second plastic component can be elastically deformed by the fingers. Due to the recesses in the second form, in which the second, soft plastic component is also injected, elevations 10 are formed above the recesses 6 and 9, which are clearly visible in the drawing.
  • the highly transparent plastic can also be made of styrene polymers, e.g. Polystyrene, styrene / acrylonitrile copolymer, from thermoplastic polycondensates, e.g. polyamide, from thermoplastic polyesters, e.g. Polycarbonate and polyethylene terephthalate, made from thermoplastic polyurethanes or from plastics made from modified cellulose, for example cellulose acetate or cellulose propionate, exist.
  • Modified polyolefins for example elastomers based on ethylene / propylene (diene) copolymer, and thermoplastic polyurethane elastomers and silicones can also be used as the soft plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)

Abstract

L'invention concerne une brosse à dents comportant un support qui permet le logement des soies, lequel se prolonge par un manche, l'ensemble formant le corps de la brosse à dents. Le corps est réalisé dans un plastique dur et compact, présentant les propriétés de solidité indispensables. Au niveau du manche, le corps présente au moins un évidement lequel est principalement rempli d'au moins un plastique souple, élastique et déformable. Pour que la brosse à dents présente un corps d'une grande transparence, dont le deuxième plastique présente une dureté si faible qu'il peut être déformé par simple pression du doigt, tout en garantissant que le matériau du corps présente une parfaite adhérence avec le deuxième plastique (plus souple), le corps est réalisé en polyméthacrylate de méthyle d'une grande transparence avec une perméabilité à la lumière d'au moins 80 % et une opacité inférieure à 4 % et le plastique souple est composé d'un élastomère thermoplastique à base de styrène-butadiène d'une dureté inférieure à 60 Shore A.
PCT/EP1996/002310 1995-05-31 1996-05-29 Brosse a dents WO1996038068A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29508990U DE29508990U1 (de) 1995-05-31 1995-05-31 Zahnbürste
DE29508990.3 1995-05-31

Publications (1)

Publication Number Publication Date
WO1996038068A1 true WO1996038068A1 (fr) 1996-12-05

Family

ID=8008789

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/002310 WO1996038068A1 (fr) 1995-05-31 1996-05-29 Brosse a dents

Country Status (2)

Country Link
DE (1) DE29508990U1 (fr)
WO (1) WO1996038068A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6826804B2 (en) * 2002-08-30 2004-12-07 Palliser Furniture Ltd. Furniture handle
WO2006002804A1 (fr) * 2004-06-25 2006-01-12 Glaxosmithkline Consumer Healthcare Gmbh & Co Kg. Processus de moulage par injection et moule de fabrication de brosse a dents
US20150173499A1 (en) * 2008-06-20 2015-06-25 Colgate-Palmolive Company Toothbrush with visual and/or other sensory effects
US10010164B2 (en) * 2009-12-18 2018-07-03 Colgate-Palmolive Company Oral care implement having multi-component handle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012732A1 (fr) * 1995-10-05 1997-04-10 Kellogg Brush Manufacturing Co. Poignee d'ustensile et son procede de fabrication
US5781958A (en) * 1996-02-14 1998-07-21 Gillette Canada Inc. Brush handle
JP2001511722A (ja) 1997-02-14 2001-08-14 スミスクライン・ビーチャム・コンシューマー・ヘルスケア・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング ２種の成分から製品を作成する射出成形法および装置
AU9394798A (en) * 1997-10-06 1999-04-27 Colgate-Palmolive Company, The Multi-component injection molded toothbrush and manufacture thereof
DE29817994U1 (de) * 1998-10-08 1999-04-22 Trisa Holding Ag, Triengen Zahnbürste
DE10210982C1 (de) * 2002-03-13 2003-08-21 Braun Gmbh Zahnbürste aus thermoplastischem Kunststoff und Verfahren zum Herstellen von Bauteilen aus thermoplastischem Kunststoff

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741066A (en) * 1984-04-11 1988-05-03 Lion Corporation Brush
JPH0274210A (ja) * 1988-09-09 1990-03-14 Sunstar Inc 歯ブラシ
DE4229152A1 (de) * 1992-09-01 1994-03-03 Jordan As Oslo Zahnbürste sowie Herstellungsverfahren für Zahnbürsten
US5398369A (en) * 1994-07-07 1995-03-21 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Toothbrush with pliable pressure pad
JPH07165988A (ja) * 1993-12-16 1995-06-27 Mitsubishi Rayon Co Ltd 歯刷子柄用樹脂材料

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741066A (en) * 1984-04-11 1988-05-03 Lion Corporation Brush
JPH0274210A (ja) * 1988-09-09 1990-03-14 Sunstar Inc 歯ブラシ
DE4229152A1 (de) * 1992-09-01 1994-03-03 Jordan As Oslo Zahnbürste sowie Herstellungsverfahren für Zahnbürsten
JPH07165988A (ja) * 1993-12-16 1995-06-27 Mitsubishi Rayon Co Ltd 歯刷子柄用樹脂材料
US5398369A (en) * 1994-07-07 1995-03-21 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Toothbrush with pliable pressure pad

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 261 (C - 0725) 6 June 1990 (1990-06-06) *
PATENT ABSTRACTS OF JAPAN vol. 95, no. 006 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6826804B2 (en) * 2002-08-30 2004-12-07 Palliser Furniture Ltd. Furniture handle
WO2006002804A1 (fr) * 2004-06-25 2006-01-12 Glaxosmithkline Consumer Healthcare Gmbh & Co Kg. Processus de moulage par injection et moule de fabrication de brosse a dents
US20150173499A1 (en) * 2008-06-20 2015-06-25 Colgate-Palmolive Company Toothbrush with visual and/or other sensory effects
US10070715B2 (en) * 2008-06-20 2018-09-11 Colgate-Palmolive Company Toothbrush with visual and/or other sensory effects
US10952526B2 (en) 2008-06-20 2021-03-23 Colgate-Palmolive Company Toothbrush with visual and/or other sensory effects
US11751675B2 (en) 2008-06-20 2023-09-12 Colgate-Palmolive Company Toothbrush
US10010164B2 (en) * 2009-12-18 2018-07-03 Colgate-Palmolive Company Oral care implement having multi-component handle
US10786071B2 (en) 2009-12-18 2020-09-29 Colgate-Palmolive Company Oral care implement having multi-component handle
US11338485B2 (en) 2009-12-18 2022-05-24 Colgate-Palmolive Company Oral care implement having multi-component handle

Also Published As

Publication number Publication date
DE29508990U1 (de) 1995-08-17

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