WO2019145114A1 - Filament et brosse à dents dotée d'au moins un filament correspondant - Google Patents

Filament et brosse à dents dotée d'au moins un filament correspondant Download PDF

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Publication number
WO2019145114A1
WO2019145114A1 PCT/EP2019/000019 EP2019000019W WO2019145114A1 WO 2019145114 A1 WO2019145114 A1 WO 2019145114A1 EP 2019000019 W EP2019000019 W EP 2019000019W WO 2019145114 A1 WO2019145114 A1 WO 2019145114A1
Authority
WO
WIPO (PCT)
Prior art keywords
projections
filament according
filament
head part
plastic material
Prior art date
Application number
PCT/EP2019/000019
Other languages
German (de)
English (en)
Inventor
Hans-Ulrich Pusch
Original Assignee
Pedex Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pedex Gmbh filed Critical Pedex Gmbh
Priority to CN201980009645.2A priority Critical patent/CN111770703A/zh
Priority to MX2020007848A priority patent/MX2020007848A/es
Priority to EP19704542.0A priority patent/EP3745911A1/fr
Publication of WO2019145114A1 publication Critical patent/WO2019145114A1/fr

Links

Classifications

    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent

Definitions

  • the invention relates to a filament having a base body made of a first plastic material, which extends along egg ner longitudinal axis, wherein the cross section of the base body has a radial inner base portion and a plurality of the base portion radially outwardly projecting protrusions integrally with the base portion are formed.
  • the invention relates to a toothbrush with at least one such filament.
  • Axial in the context of this application is a direction parallel to the longitudinal axis of the main body of the filament.
  • a radial direction is perpendicular to the longitudinal axis of the main body of the filament and is based on the center of the cross-section of the body.
  • the known filaments have an only average cleaning effect when brushing teeth.
  • the object is achieved by a filament with the Merkma len of claim 1 and with a toothbrush with which he inventive filament according to claim 15.
  • the filament according to the invention is characterized in that at least one of the projections carries at its radial externa ßeren end a head part, which consists of a second plastic material, which is different from the first plastic material of the body.
  • the invention is based on the basic idea that the projection provided with the head part has a greater radii length than a gropfteilivaer projection. As a result, the area between two adjacent projections to the acquisition of toothpaste is increased. With the choice of the second plastic material, the cleaning effect of the projection and thus of the entire filament can be improved, especially when brushing teeth.
  • the protrusions are formed along the entire length of the filament so that the protrusions form along radially extending ribs extending in the longitudinal direction of the filament. This increases the area for receiving toothpaste and thus the cleaning effect when brushing teeth.
  • At least six projections in particular at least eight projections, may be provided.
  • the projections may be uniformly distributed over the circumference of the cross section of the base portion.
  • the projections are point-symmetrical with the center point of the cross section of the base portion arranged, which corresponds to a particularly simple arrangement.
  • a plurality of projections each have a head portion to ßern the area for receiving toothpaste to magnification.
  • projections in the circumferential direction of the base portion with headboards and headless projections are arranged alternately, which corresponds to a regular structure of the filament.
  • each projection may have a head part, so that the area for receiving toothpaste increases and thus the cleaning effect when brushing teeth is improved.
  • the head part can be at least positively and / or cohesively connected to the projection.
  • the head part can be welded and / or glued to the projection.
  • the head part can be attached to the projection by means of an undercut, wherein For example, engages a radially inwardly facing engagement part of the head part in a recess provided with an undercut recess of the projection.
  • the projection may have a radially outwardly facing A handle part which engages in a recess provided with a Deutschenschnei recess of the head part.
  • the head part can be arranged cohesively on the projection and in particular be welded to these ver.
  • the radial vertex of the head part may project radially beyond the radial vertexes of the projections, i. in that the projections which carry a head part have a greater radial distance to the center of the cross section than the headless projections.
  • the radial distance is defined as the distance to the center of the cross section of the Grundkör pers, which usually coincides with the longitudinal axis of the filament.
  • the radial distance of the radial vertex of the head part-free projection may be 50 pm to 150 pm, in particular 75 pm to 125 pm and for example about 100 pm.
  • the radial vertex of the projection in the sense of He-making is that point of the projection with the largest ra-media distance.
  • the radial vertex point of the head portion projects beyond the projection of the radial vertex point of the headless projection by 10 pm to 30 pm, in particular by about 20 pm.
  • the ratio of the difference of the radial distances of the head part from a headless projection to the radial length of the headless projection between 5% and 20%, in particular 5% to 15% and preferably about 10%.
  • the first plastic material of the base body is a thermoplastic polyester, in particular PBT (polybutylene terephthalate). This material has due to its Shore hardness sufficient rigidity to be used in toothbrushes.
  • the second plastic material of the head part may be a thermoplastic material with in particular a lower Sho re-hardness than the first plastic material, example, a thermoplastic elastomer. In contact with the tooth, the material has a good cleaning effect when brushing teeth.
  • all head parts consist of the same two th plastic material, so that the filament is particularly easy to manufacture.
  • At least one head part of a third thermoplastic material which is different to the first and the second plastic material ver.
  • a group of head parts made of the second thermoplastic material and a further group of headboards may consist of the third plastic material.
  • the third thermoplastic material may have a lower Shore hardness than the first plastic material. The choice of different plastic materials for the head parts allows an optimization of the cleaning effect when brushing teeth.
  • the filament may be twisted around its longitudinal axis, so that the projections and the head part along the longitudinal axis tion of the filament are arranged helically.
  • the Fila ment can have a twist of 100 U / m (revolutions per meter) to 300 U / m, in particular 200 U / m to 170 U / m, in particular about 150 U / m. Due to the helical arrangement toothpaste is better kept between two adjacent projections, especially during the Zzeneput zens.
  • Fig. 1 shows an end region of a filament according to the invention in a perspective view
  • FIG. 2 shows the filament from FIG. 1 in a schematic cross section
  • Fig. 3 shows a further embodiment of the fila
  • Fig. 4 shows another embodiment of the fila
  • Fig. 5 shows another embodiment of the fila
  • Fig. 6 a twisted filament in perspective view
  • Fig. 7 is a perspective view of the
  • the head of a toothbrush with a ver enlarged representation of some bristles end of the bristle trim.
  • Fig. 1 shows an end portion of a Fila element 10 of the invention, which extends along a longitudinal axis L.
  • a base body 11 he visually with a radially inner base portion 12.
  • eight radially protruding projections 13 are formed, the uniform distribution over the cross section of the base portion 12 and point symmetrical to the center M of the cross section are arranged. In each case be adjacent projections 13 are in the circumferential direction by 45 ° ver is arranged to each other.
  • the projections 13 extend over the entire length of the filament 10 so as to form ribs 21 along the longitudinal axis L (FIG. 1).
  • the base body 11 is concavely curved in a transition region 19 between two adjacent projections 13, so that the base body 11 changes continuously in the circumferential direction from one projection 13 to the other. When brushing toothpaste is held in this transition region 19.
  • head part-free projections 13 which are offset in their alignment by 90 ° to each other is arranged.
  • the remaining four projections 13 carry at their radially outer ends 14 each have a head portion 15.
  • the ends 14 each have a radial recess 17 (see Fig. 2) with an undercut, in which a radially to the center point M of the cross-section directed engagement member 18 of the head portion 15 engages positively.
  • the head parts 15 are positively connected to the projections 13 the verbun.
  • the head parts 15 are materially welded to the projections 13.
  • This ra diale distance Si is about 100 pm.
  • the distance S 2 in the embodiment of FIG. 2 is about 110 pm.
  • the difference S3 of the radial Ab states S 2 and Si is about 20 pm (Fig. 3). This value corresponds to about 5% to 25%, in particular 10% of the radial distance Si of the gropfteil990 projection 13 of FIG. 2.
  • the head parts 15 project beyond all radial crest te 16 of the headless projections, in particular by a dimension S 3rd
  • the main body 11 of the filament 10 and in particular the base portion 12 and the projections 13 are integrally formed and made of a first plastic mater ial, for example, from a thermoplastic poly ester such as PBT (polybutylene terephthalate).
  • a thermoplastic poly ester such as PBT (polybutylene terephthalate).
  • the head parts 15 are made of a second plastic material, for example a thermoplastic synthetic material. fabric material with a lower Shore hardness than the first plastic material. As a result, an improved cleaning effect is achieved when brushing teeth.
  • FIG. 2 shows a schematic cross-section of the filament 10 according to FIG. 1 with four projections 13 free of head defects and four projections 13, each with a head part 15, which are arranged alternately in the circumferential direction.
  • the filament 10 has three head part-free projections 13 and three jumps before 13, each with a head portion 15. Seen in the circumferential direction, the gropfteilinate Vorsprün ge 13 alternate with the projections 13 with a head part 15, so that the gropfteilenfin projections 13 are arranged at an angle of 120 ° to each other. The same applies to the projections 13 with a head part 15th
  • FIG. 4 shows a further embodiment of the filament 10 which is similar to the embodiment of FIG. 2 and differs therefrom in that each projection 13 is provided with a head part 15.
  • the head parts 15 are all made of the same second plastic material.
  • Fig. 5 shows a section through a similar to FIG. 4 filament 10, the four head parts 15 of the type mentioned from a third plastic material, while the four remaining head parts 15 are made of the second plastic material.
  • the filament 10 of FIG. 5 thus consists of three components, wherein the third plastic material (like the second plastic material) has a lower Shore hardness than the first plastic material, but also like the second plastic material, a thermo - plastic elastomer is.
  • the cleaning properties of the filament 10 are adjustable, in particular for the removal of plaque.
  • Fig. 6 shows a perspective schematic view ei nes the filament 10 of FIG. 1 similar filament 10, which differs from this in that it is twisted along its longitudinal axis L with 150 U / m, so that the projections 13 with the Head parts 15 extend helically around the longitudinal axis L.
  • FIG. 7 shows a head of a toothbrush 20, which has a bristle facing 22 with a multiplicity of bristles of filaments 10 according to the invention in the embodiment according to FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Brushes (AREA)

Abstract

L'invention concerne un filament ayant un corps de base constitué d'un premier matériau plastique. Le corps de base s'étend le long d'un axe longitudinal, sa section transversale comprenant une section de base radialement interne et plusieurs saillies dépassant de la section de base radialement vers l'extérieur. Les saillies sont formées d'une seule pièce avec la section de base. Selon l'invention, au moins l'une des saillies porte une partie tête à son extrémité radialement externe. La partie tête est composée d'un second matériau plastique qui diffère du premier matériau plastique du corps de base.
PCT/EP2019/000019 2018-01-29 2019-01-24 Filament et brosse à dents dotée d'au moins un filament correspondant WO2019145114A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980009645.2A CN111770703A (zh) 2018-01-29 2019-01-24 细丝和具有至少一个相应的细丝的牙刷
MX2020007848A MX2020007848A (es) 2018-01-29 2019-01-24 Filamento y cepillo de dientes con al menos un filamento correspondiente.
EP19704542.0A EP3745911A1 (fr) 2018-01-29 2019-01-24 Filament et brosse à dents dotée d'au moins un filament correspondant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018000663.9 2018-01-29
DE102018000663.9A DE102018000663A1 (de) 2018-01-29 2018-01-29 Filament und Zahnbürste mit zumindest einem entsprechenden Filament

Publications (1)

Publication Number Publication Date
WO2019145114A1 true WO2019145114A1 (fr) 2019-08-01

Family

ID=65365918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/000019 WO2019145114A1 (fr) 2018-01-29 2019-01-24 Filament et brosse à dents dotée d'au moins un filament correspondant

Country Status (5)

Country Link
EP (1) EP3745911A1 (fr)
CN (1) CN111770703A (fr)
DE (1) DE102018000663A1 (fr)
MX (1) MX2020007848A (fr)
WO (1) WO2019145114A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861660A (en) * 1986-01-20 1989-08-29 Teijin Limited Stretchable synthetic polymer composite filament
DE19533815A1 (de) * 1995-09-13 1997-03-20 Coronet Werke Gmbh Zahnbürste und Verfahren zu ihrer Herstellung
US20080221618A1 (en) * 2007-03-09 2008-09-11 Gaoyuan Chen Co-extruded tissue grasping monofilament
DE102010033644A1 (de) * 2009-08-06 2011-02-10 Mcneil-Ppc, Inc. Bürstenkonfiguration

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013007870A1 (de) * 2013-05-08 2014-11-13 Pedex Gmbh Monofil aus Kunststoff und Zahnbürsten-Borste aus einem entsprechenden Monofil
DE102015205265A1 (de) * 2015-03-24 2016-09-29 Pedex Gmbh Filament aus Kunststoff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861660A (en) * 1986-01-20 1989-08-29 Teijin Limited Stretchable synthetic polymer composite filament
DE19533815A1 (de) * 1995-09-13 1997-03-20 Coronet Werke Gmbh Zahnbürste und Verfahren zu ihrer Herstellung
US20080221618A1 (en) * 2007-03-09 2008-09-11 Gaoyuan Chen Co-extruded tissue grasping monofilament
DE102010033644A1 (de) * 2009-08-06 2011-02-10 Mcneil-Ppc, Inc. Bürstenkonfiguration

Also Published As

Publication number Publication date
CN111770703A (zh) 2020-10-13
EP3745911A1 (fr) 2020-12-09
MX2020007848A (es) 2020-10-28
DE102018000663A1 (de) 2019-08-01

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