EP2224830B1 - Filament et procede pour produire des filaments - Google Patents

Filament et procede pour produire des filaments Download PDF

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Publication number
EP2224830B1
EP2224830B1 EP08867711.7A EP08867711A EP2224830B1 EP 2224830 B1 EP2224830 B1 EP 2224830B1 EP 08867711 A EP08867711 A EP 08867711A EP 2224830 B1 EP2224830 B1 EP 2224830B1
Authority
EP
European Patent Office
Prior art keywords
bristle
mold
head
shaft
foot
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.)
Active
Application number
EP08867711.7A
Other languages
German (de)
English (en)
Other versions
EP2224830A2 (fr
Inventor
Katja Honnefeller
Jürgen SENG
Michael Klöppel-Riech
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.)
Braun GmbH
Original Assignee
Braun 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 Braun GmbH filed Critical Braun GmbH
Publication of EP2224830A2 publication Critical patent/EP2224830A2/fr
Application granted granted Critical
Publication of EP2224830B1 publication Critical patent/EP2224830B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/20—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier the bristles being fixed or joined in rubber bodies, e.g. in soft rubber
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0253—Bristles having a shape which is not a straight line, e.g. curved, "S", hook, loop
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0284—Bristles having rounded ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/102—Brush specifically designed for massaging the skin or scalp
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/104—Hair brush

Definitions

  • the invention relates to a hairbrush, bristles for use in a hairbrush, and methods of making a hairbrush and such bristles.
  • the invention can be used in a variety of very different hairbrushes. It is even contemplated that the bristles described herein may be used in brushes that are not or not primarily used for brushing the hair. In particular, it is also considered that the bristles are used in a massage brush. Likewise, their use in a hair care device into consideration, which additionally warms the hair, such as through warm air or a warm contact surface. Corresponding devices are marketed as so-called stylers or curlers.
  • the GB 601,371 discloses a hairbrush with non-metallic bristles.
  • the bristles taper towards the tip and have a bristle root that allows them to be firmly anchored in a rubber mat by first pushing the bristles with the tip through openings in the mat and applying pressure to the bristle feet from the brush side through a corresponding brush body becomes.
  • a method for producing bristles according to the preamble of claim 1 is known from DE 2155888 known.
  • a multi-part separable mold is disclosed, with which a bristle with bristle foot and bristle shaft can be formed.
  • the method allows at least in principle to produce burr-free bristle shafts, but requires a complex stretching and a complex mold. Despite the complexity of this mold, however, no arbitrary shapes can be made for the bristle foot or bristle head.
  • the object of the present invention is to offer bristles and brushes and methods for their production that are improved over the prior art.
  • the bristles and brushes should be particularly gentle on the hair and scalp.
  • the manufacturing processes should be suitable for mass production, they should be inexpensive and produce little committee.
  • the method should provide safe and gentle to use bristles and brushes even with imperfect production standards.
  • the use of a multi-part separable molding tool makes it possible to provide optimized mold cavities for various bristle parts.
  • the bristle stock blank is formed in the mold cavity of a separate mold jaw.
  • moldable material is introduced into the mold, which for this purpose generally has an air outlet channel opposite the filling opening for the moldable material.
  • the mold cavity will usually taper away from the filler opening, i. H. the mold cavity has a smaller cross section at a location farther from the filling opening. Accordingly, the bristle shaft blank will typically be shaped to taper toward the bristle head.
  • the invention is suitable for the formation of bristles of all common moldable materials, d. H. all suitable plastics, and in particular polyamides.
  • a preferred material is aliphatic polyamides, especially those commercially available as "nylon". Such aliphatic polyamides are relatively insensitive to heat, allowing the bristles to be used in a hairbrush while the hair is heated, such as by a hair dryer.
  • a bristle shaft for example by deburring.
  • deburring is to treat shaped bristle shafts with friction means.
  • this operation is time consuming and expensive, and can also lead to increased roughness at other locations of the bristle shaft.
  • the bristle shaft could be frozen for purposes of deburring.
  • the per se very tough aliphatic polyamide material is easier to deburr by deep cooling. Obviously this step is also expensive.
  • the bristle base is formed with two mold jaws, which together form a mold cavity.
  • This mold cavity which is formed by two mold jaws, substantially corresponds to the shape of the bristle foot to be formed. It is filled with the moldable material and later the two mold jaws are separated.
  • the bristle foot is usually formed from the same moldable material as the bristle shaft.
  • the mold cavities for bristle shaft and bristle foot thereby form a connected mold cavity, which is filled in one step with a moldable material. But it is also the formation of bristle shaft and foot of different material conceivable.
  • the Bostenkopf is also formed with two mold jaws, which together form a mold cavity.
  • This mold cavity which is formed by two mold jaws, substantially corresponds to the shape of the bristle head to be formed. It is filled with the moldable material and later the two mold jaws are separated.
  • the Bostenkopf is usually formed from the same moldable material as the bristle shaft and / or bristle foot.
  • the mold cavities for bristle shaft and bristle head form an interconnected mold cavity, which is filled in one step with a moldable material. But it is also the formation of bristle shaft and foot of different material conceivable.
  • the withdrawal direction is dictated by this taper.
  • the bristle shaft will rejuvenate in the direction of the border head.
  • the removal should take place from the mold in the direction of the bristle foot.
  • the two mold jaws which have formed the bristle head are first of all released. Then, the two mold jaws that have formed the bristle foot are moved relative to the mold jaw for the bristle shaft. Then the two mold jaws are held bristle foot have moved apart so that the bristle is completely outside of the mold.
  • a method is considered in which the largest diameter of the bristle head measured radially to the longitudinal axis of the bristle is smaller than the smallest diameter of the bristle shaft measured radially to the longitudinal axis of the bristle.
  • the largest diameter of the bristle head measured radially to the longitudinal axis of the bristle may be smaller by a factor of at least 0.5 or 0.75 or 0.8 or 0.9 than the smallest diameter of the bristle shaft measured radially to the longitudinal axis of the bristle.
  • the bristle material may be largely or completely inelastic because the geometry of the bristle does not hinder removal in any way. If a sufficiently elastic material is used, however, the diameter of the bristle head can also be greater than the diameter of the bristle shaft (measured in each case as above).
  • brushes are a reasonably priced daily new commodity. Therefore, a brush should not be too expensive. All the more so, attention must be paid to an inexpensive mass-production method given the enormous number of bristles to be produced. Separable molds, which together form a mold cavity, regularly leave a small ridge along the parting line. For high-quality and new molds this burr is low. Especially in a cheap mass process, it is necessary to use inexpensive molds over a certain period of use. This leads to significant burrs that have the disadvantages described above when used as a hairbrush.
  • the formation of the bristle shaft together with bristle foot in a single mold is not without other difficulties.
  • the bristle shaft must then taper over its entire length and the bristle foot must do so, so that no complex bristle shape can be generated.
  • Denman discloses a relatively complex brush body in which the bristles are fully supported. The bristles can bend over to the side, however do not dodge along its longitudinal axis towards the brush. Such a retraction of the bristles, so a resilient storage, but is much gentler for the scalp, for example, when the brush is used as a hairbrush.
  • the present method allows Bosten to produce such a resilient storage.
  • the resilient mounting of the bristles can be achieved if the bristle has an undercut, with which the bristle foot can be attached both on the top and on the underside of a substrate.
  • Such a carrier material may be, for example, an elastic rubber mat, which is embedded elastically biased in the bristle body. This rubber mat then gives every single sunken bristle a spring elasticity.
  • the bristles can both recede along their longitudinal axis (and spring-elastically pressed back towards the hair) as well as yield in any axial direction. To be able to design a more complex shaped bristle foot therefore allows to produce gentler brushes.
  • the method for producing a bristle may also comprise further work steps.
  • Such processing may consist in dyeing, grinding, smoothing or polishing the bristle stock blank.
  • the processing of the bristle shaft blank in the region of his head in question may consist in dyeing, grinding, smoothing or polishing the bristle stock blank.
  • bristles on the bristle head with a shell material.
  • the bristle heads with paint, for example in the form of small paint droplets, which cause thickening and rounding of the bristle head.
  • Such painted bristle ends are known. However, they lead with prolonged use of bristles and brush regularly to the problem that the shell material drops from the bristle. This problem can be addressed by providing a bristle head with a suitable profile.
  • the third mold cavity can in the process described inde pendent of the other mold cavities are designed to choose the profile suitable. Bristles whose bristle head has an undercut or a constriction are very suitable.
  • the method can thus be advantageously used to produce at least one bristle which comprises a bristle foot, a bristle shaft and a bristle head, each having a different profile, and in which the bristle base has an undercut, the bristle shaft is burr-free and the bristle head has a bristle head cover.
  • a bristle which comprises a bristle foot, a bristle shaft and a bristle head each having a different profile, and wherein the bristle has an undercut, the bristle shaft is burr-free and the bristle head has a bristle head cover and the largest radially to the bristle longitudinal axis measured diameter of Bristle head is smaller than the smallest measured radially to the bristle longitudinal axis diameter of the bristle shaft.
  • the largest diameter of the bristle head measured radially to the longitudinal axis of the bristle may be smaller by a factor of at least 0.5 or 0.75 or 0.8 or 0.9 than the smallest diameter of the bristle shaft measured radially to the longitudinal axis of the bristle.
  • the bristle and the bristle head may have a constriction or an undercut.
  • the present method makes it possible to design bristle heads of any shape in a separate mold. However, in the case of shaping by the two mold jaws involved, at least under certain circumstances of mass production, a burr may arise. It is possible to make the bristle head cover so that the bristle is particularly gentle even in weaknesses in the manufacturing process. In this context, it is possible to make the bristle head cover so that it completely envelops the bristle head, as far as it was in the third mold cavity. Typically, the bristle head envelope will envelop not only the end, often in the form of a ball, of the bristle head, but also the upper part of the shaft. It is contemplated that the bristle head cover extends axially over a certain length.
  • a bristle may be useful in which the bristle head extends axially over a first length (l k ) and the bristle head sheath extends axially over a second length (l h ) and the second length (l h ) by a factor of at least 1, 2 or 1.5 or 2 or 2.5 is greater than the first length (l k ).
  • the method can be used to provide bristles with a bristle head cover, in which the largest radially to the bristle longitudinal axis measured diameter of Bostenkopfhülle (20) is greater than the smallest radially measured to the longitudinal axis of the bristle diameter of the bristle shaft (14).
  • the largest diameter of the bristle head cover which is measured radially to the longitudinal axis of the bristle, can be greater by a factor of at least 1.1 or 1.25 or 1.5 or 2.0 or 2.5 than the smallest diameter of the bristle shaft measured radially to the longitudinal axis of the bristle.
  • the method of making bristles may be part of a brush manufacturing process.
  • a method of making a brush wherein bristles are made in a process according to any one of the preceding claims is contemplated and such bristles are inserted with their bristle base into a bristle carrier pad and the bristle carrier pad is inserted into a brush
  • a hairbrush made by any of the methods described herein may also include additional hair treatment devices.
  • the hairbrush additionally comprises an ion applicator.
  • Such an ion applicator can counteract the static charge of the hair. Hair typically recharges positively, so the application of negative ions to the hair is helpful.
  • Such an ion applicator may be mains powered or battery powered. For a particularly gentle and handy hairbrush, a battery-powered applicator for negative ions is considered.
  • Fig. 1 shows in longitudinal section a bristle (10) in a mold.
  • the longitudinal section is chosen along the longitudinal axis (L) of the bristle. Visible are the bristle head (12), the bristle shaft (14) and the bristle foot (16).
  • the bristle shaft (14) is formed in a first mold jaw (30).
  • the bristle base (16) is formed between a second mold jaw (32) and a third mold jaw (34), which together offer a second mold cavity (42).
  • the mold cavity (42) is designed so that the bristle foot (16) has an undercut (18).
  • the bristle head is formed between the fourth die jaw (36) and the fifth die jaw (38), which together offer the third die cavity (44).
  • the removal of the bristle from the molds can take place in that first the fourth mold jaw (36) and the fifth mold jaw (38) in the axial direction (A) are moved apart and then the second mold jaw (32) and the third mold jaw (34) in Bristle longitudinal direction (L) of the first mold jaw (30) are moved away. Subsequently, the second mold jaw (32) and the third mold jaw (34) along the axis (A) is moved apart.
  • Fig. 2 shows a bristle (10) that can be made by the method disclosed herein.
  • the bristle (10) has a burr-free bristle shaft (14) which is bounded above by a bristle head (12) and down through the bristle base (16). Between bristle base (16) and bristle head (12), the bristle shaft (14) tapers towards the bristle head (12).
  • the bristle base (16) has an undercut (18). With this undercut (18), the bristle (10) can be anchored in a bristle carrier.
  • the bristle head is formed substantially axially symmetrical to the longitudinal axis (L) of the bristle.
  • Fig. 3 shows another bristle (10) with a bristle head cladding. In its form, it essentially corresponds to the bristle of the Fig. 2 , However, a Bostenkopfhülle (20) is additionally applied to the bristle head (12). This leads to a thickening of the head relative to the bristle shaft (14), which promotes a gentle hair and skin treatment.
  • the head diameter (d k ) which is actually to be determined in the radial direction to the longitudinal axis, can be measured in a different direction with a spherical head profile, as shown.
  • the first length (l k ) can be conveniently determined in this round head shape between the top of the bristle head and the height of the narrowest constriction between bristle head and bristle shaft.
  • Fig. 4 shows a cross section through a brush which passes through the bristle of the brush (40). It can be seen in this cross section, the bristle carrier (42) and the brush body (44), in which the bristle carrier (42) is embedded.
  • the bristle carrier (42) can be resiliently biased are let in, so that the bristles in the bristle carrier (42) contained (10) are resiliently mounted relative to the bristle body (44).
  • the bristles (10) can move along their respective longitudinal axes on the brush body (44) and again move resiliently in the direction of about the hair back. You can also move in the axial direction.
  • the illustrated brush (40) is additionally provided with an ion applicator (50).
  • the ion applicator is attached to the back of the brush body, ie on the side facing away from the bristle carrier (42).

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  • Brushes (AREA)

Claims (13)

  1. Procédé de production d'une soie (10) pour utilisation sur une brosse à cheveux (40), introduite sous forme de matière souple dans un outil de moulage séparable en plusieurs parties et transformée en une soie (10) avec une tête de soie(12), une tige de soie (14) et un pied de soie (16),
    caractérisé en ce que
    une tige de soie (14) est formée dans un premier bloc de moulage (30), dans lequel le matériau malléable est introduit dans une première cavité de moulage (40) du premier bloc de moulage (30) et est ensuite extrait de la première cavité de moulage (40) du premier bloc de moulage (30), dans lequel la première cavité de moulage (40) du premier bloc de moulage (30) reste conservée et
    le pied de soie (16) est formé dans un deuxième bloc de moulage (32) et un troisième bloc de moulage (34), dans lequel le deuxième et le troisième blocs de moulage forment une seconde cavité de moulage (42) dont la forme correspond intégralement au pied de soie à mouler (16), et la seconde cavité de moulage (42) est remplie avec le matériau malléable, et ensuite, le deuxième et le troisième bloc de moulage sont séparés et
    la tête de soie (12) est formée dans un quatrième bloc de moulage (36) et un cinquième bloc de moulage (38), qui forment ensemble une troisième cavité de moulage (44) dont la forme correspond intégralement à la tête de soie à mouler (12), et la troisième cavité de moulage (44) est remplie avec le matériau malléable, et ensuite, le quatrième et le cinquième bloc de moulage sont séparés.
  2. Procédé selon la revendication 1, dans laquelle le plus grand diamètre de la tête de soie (12) mesuré radialement par rapport à l'axe longitudinal de la soie est plus petit que le plus petit diamètre mesuré radialement par rapport à l'axe longitudinal de la tige de soie (14).
  3. Procédé selon l'une des revendications précédentes dans laquelle la soie (10) continue à être traitée.
  4. Procédé selon la revendication 3 dans laquelle la soie (10) continue à être traitée dans la zone de la tête de soie (12).
  5. Procédé selon la revendication 4, dans laquelle le profil de l'ébauche de la tige de soie est équipé d'une gaine de la tête de soie (20) dans la zone de la tête.
  6. Procédé selon la revendication 5, dans laquelle la gaine de la tête de soie (20) habille complètement la tête de soie (12), dans la mesure où elle se trouve dans la troisième cavité de moulage (44).
  7. Procédé selon la revendication 5 ou 6, dans laquelle le plus grand diamètre de la gaine de la tête de soie (20) mesuré radialement par rapport à l'axe longitudinal de la soie est plus grand que le plus petit diamètre de la tige de soie (14) mesuré radialement par rapport à l'axe longitudinal de la soie.
  8. Procédé selon l'une des revendications précédentes, dans laquelle une contre-dépouille (18) est prévue sur le pied de soie (16).
  9. Procédé pour la fabrication d'une brosse (40) dans laquelle les soies (10) sont produites par un procédé conformément à l'une des exigences précédentes, et ces soies (10) sont utilisées avec leurs pieds (16) dans un porte-soie (42) et le porte-soie (42) est inséré dans un corps de brosse (44).
  10. Soie (10) qui est produite par l'un des procédés selon l'une des revendications précédentes.
  11. Brosse à cheveux qui a été produite par le procédé selon la revendication 9.
  12. Brosse à cheveux selon la revendication 11 qui comprend un appareil de traitement des cheveux supplémentaire.
  13. Brosse à cheveux selon la revendication 12 qui comprend un dispositif ionique (50).
EP08867711.7A 2007-12-29 2008-11-26 Filament et procede pour produire des filaments Active EP2224830B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007063154A DE102007063154A1 (de) 2007-12-29 2007-12-29 Haarbürste
PCT/EP2008/009995 WO2009083077A2 (fr) 2007-12-29 2008-11-26 Brosse à cheveux

Publications (2)

Publication Number Publication Date
EP2224830A2 EP2224830A2 (fr) 2010-09-08
EP2224830B1 true EP2224830B1 (fr) 2018-02-28

Family

ID=40719351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08867711.7A Active EP2224830B1 (fr) 2007-12-29 2008-11-26 Filament et procede pour produire des filaments

Country Status (7)

Country Link
US (1) US8414818B2 (fr)
EP (1) EP2224830B1 (fr)
JP (1) JP5204853B2 (fr)
CN (2) CN101909485B (fr)
DE (1) DE102007063154A1 (fr)
RU (1) RU2469632C2 (fr)
WO (1) WO2009083077A2 (fr)

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EP2366307A1 (fr) * 2010-03-17 2011-09-21 Kuo, Chiou-chern Brosse à cheveux et la structure de soies avec fermoir a cliquet
FR3000691B1 (fr) 2013-01-10 2015-02-13 Univ Haute Alsace Procede de preparation d'un materiau allonge muni de nanostructures de carbone greffees, appareil et produit associes
WO2019018151A1 (fr) * 2017-07-20 2019-01-24 The Procter & Gamble Company Capteur en peigne pour mesurer une résistance au peignage

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CN102302272A (zh) 2012-01-04
WO2009083077A3 (fr) 2009-11-26
RU2469632C2 (ru) 2012-12-20
JP5204853B2 (ja) 2013-06-05
CN101909485B (zh) 2012-11-07
US8414818B2 (en) 2013-04-09
WO2009083077A2 (fr) 2009-07-09
JP2011506004A (ja) 2011-03-03
US20100282268A1 (en) 2010-11-11
CN101909485A (zh) 2010-12-08
RU2010121721A (ru) 2012-02-10
DE102007063154A1 (de) 2009-07-09
CN102302272B (zh) 2016-05-11
EP2224830A2 (fr) 2010-09-08

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