Classifications

• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D1/00—Bristles; Selection of materials for bristles
• • 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
  • A46D—MANUFACTURE OF BRUSHES
  • A46D1/00—Bristles; Selection of materials for bristles
  • A46D1/04—Preparing bristles
• • 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 bristles which can be used in brushes, in particular hairbrushes, and to processes for producing such bristles.
• the invention can be used in a variety of very different hairbrushes. It is also 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.
• GB 601, 371 discloses a hairbrush with non-metallic bristles.
• the bristles taper towards the tip and have a round bristle head.
• Denman suggests that the bristles be injection molded in one piece with the bristle head.
• the injection molding process has some limitations on the bristle shape and it appears impossible to achieve a taper that does not extend to the bristle head.
• the object of the present invention is to offer bristles and methods for their production which are improved over the prior art.
• the bristles and brushes with these bristles should be particularly gentle on the hair and scalp.
• the manufacturing processes should be suitable for mass production, they should be inexpensive with little waste.
• the method should provide safe and gentle to use bristles and brushes even with imperfect production standards.
• a method for molding a head profile of one or a plurality of bristles in which the bristles (the plural of bristles should not preclude the treatment of a single bristle) are guided on a bristle carrier, the bristles are aligned vertically with its longitudinal axis and in which a non-contact heater acts at least on the bristle head.
• the bristle carrier may take a variety of forms and be optimized for mass production.
• the bristles can be kept separate in the carrier or in groups of several bristles.
• the bristles can be guided in different position, in particular vertically. That is, the bristle head to which the profile is to be molded should point either downwards or downwards. In this orientation, gravity seems to have a favorable influence on the head shape. In any case, there is no asymmetry of the head shape caused by gravity. Without wishing to make any theory about the process, it appears that the shape of the head profile is influenced by the gravitational forces and cohesive forces of the material.
• the non-contact heating can be done in a very different form.
• the heating comes into consideration by means of all suitable electromagnetic radiation, in particular infrared light or microwaves.
• the heating can be done by heat radiation from a metallic object, such as a copper block.
• the contact-free heating comes from a certain distance, by a plane or a surface curved towards the bristles.
• Suitable boiler rooms can have any desired hollow shape.
• the cavity may be at least partially cylindrical in shape. It is possible to offer heating elements with a series of partially or completely cylindrical cavities.
• the heating in a heating tunnel into consideration.
• a tunnel allows the bristles to be heated while being transported simultaneously.
• the bristle transport then takes place along a tunnel longitudinal axis.
• a U-shape is well suited.
• the dimensions of the boiler room are to be adjusted to the dimensions of the bristles to be treated.
• the bristle diameter is to be considered. This is to be measured 5 mm below the end of the bristle head. Radial to the longitudinal axis of the brush, the boiler room should have a certain smallest diameter.
• the smallest diameter measured between two walls of the boiler room should not be less than a certain amount.
• such smallest diameters are larger by a factor of 1 to 10 than the bristle diameter, for example also by a factor of 3 to 6.
• the immersion depth of the bristle in the boiler room is to be considered.
• the immersion depth is to be understood as the bristle length which extends through an imaginary plane which delimits the heating space in the direction of penetration.
• a favorable immersion depth results from the bristle diameter by multiplication by a factor of 0.5-10, for example also by a factor 1-4.
• the clear height of the Bosten in the boiler room is to be considered. Under the clear height to be understood in the direction of the bristle shaft to the bristle head along the Bostenlssensachse distance from the end of the bristle head to the wall of the boiler room.
• a favorable clear height results from the bristle diameter multiplied by a factor of 1-10, for example, by a factor of 3 to 6.
• the clear height can also be tuned to the clear diameter and then results by multiplying the clear diameter with a Factor of 0.5 - 2, for example by a factor of 0.8 - 1.2.
• bristles can rotate 5 to 20 times around their longitudinal axis. In a heating tunnel, this rotation can be superimposed on the translatory movement. The rotation leads to a more even head shape.
• the method is particularly suitable for producing spherical, pear-shaped, elliptical or mushroom-shaped head profiles.
• the profile is to be understood in each case idealized, neglecting the head shaft extending to the bristle.
• a method of the type described is contemplated in which the heating time is between 1 and 180 seconds, for example between 5 and 60 seconds or between 10 and 30 seconds and in which the walls of the heating chamber are at a temperature of 200 to 400 ° C, for example 250 to 350 ° C have.
• the method described can be applied particularly advantageously to burrs without burrs.
• a head profile on a bristle stock blank at both ends.
• opposite boiler rooms can be used.
• the bristle stock blank can then be separated in the middle, so as to obtain two bristles, each with a molded head profile.
• the invention is suitable for the formation of bristles of all common moldable materials, d. H. all suitable plastics, for example 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.
• 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 separates the shell material from the bristle. Therefore, it is proposed to the bristle head before applying the wrapping material Form head profile. Any change or widening of the bristle profile on the bristle head, which enables better anchoring of the wrapping material, may be considered for this purpose.
• the bristle end can be designed spherical, elliptical, mushroom or T-shaped.
• the method of making bristles may be part of a brush manufacturing process.
• a method for producing a brush in which bristles are produced in a method according to one of the preceding claims, is considered, and these bristles with their bristle base are inserted 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 A schematic perspective view of the arrangement of bristles, bristle carrier and heater
• Fig. 2 A perspective view of a suitable heating device
• Fig. 3 A perspective view of another suitable heating device
• FIG. 4 shows an exemplary longitudinal section through a heating device Fig. 5: Preferred head profiles which can be produced by the disclosed method
• Fig. 1 shows a schematic view of a possible procedure. Bristles having a bristle head (12), a bristle shaft (14), a bristle base (16) are held in this process by a bristle carrier (30). The bristles (10) are individually placed on the bristle carrier (30) and are guided in the region of the heating device (40), so that the bristles (10) of the heat of the heating chamber (42) are exposed. This heat acts at least on the bristle heads (12), so that there may arise a head profile (20). In the method shown, the bristle longitudinal axis (L) is aligned vertically, ie in the direction of fall of an object, as indicated for an apple. In Fig. 1, the bristle head (12) upwards, but it is also an arrangement conceivable in which the bristle head (12) points downwards. In such an arrangement, the bristle carrier (30) will usually be located above the heating device (40).
• Fig. 2 shows a heating device suitable for the method.
• heating cylinder (46) are provided in this heater as heating chambers (42) heating cylinder (46) are provided. Bristles may be individually or in groups suitably spaced from the heating cylinder (46) introduced. You will spend a certain amount of time there, for example between 5 and 60 seconds or between 10 and 30 seconds. Although they are shown otherwise for the sake of clarity, the longitudinal axis of the heating cylinder (46) will usually be vertical, either so that the heating cylinder are open at the bottom or so that they are open at the top.
• FIG. 3 shows a heating device (40) which can be used alternatively or in addition to the heating device shown in FIG. 2.
• This heating device has a heating chamber (42) in the form of a heating tunnel (48).
• This heating tunnel allows the execution of bristle toes over a certain distance.
• bristles must be translationally moved over a certain distance. This translational movement can then be used for simultaneous heating by the bristles are passed through the heating tunnel (48).
• the residence time of the bristles will be for example between 5 and 60 seconds or between 10 and 30 seconds. From this, the appropriate length of the heating tunnel for a certain transport speed of the costs must be calculated. For example, the length of the heating tunnel can be between 0.5 and 3 meters or between 1 and 2 meters.
• FIG. 4 shows an exemplary cross section through a suitable heating device (40).
• the figure is conceivable as a cross section both by the heater of Figure 3 and by the heater of Figure 2. It can be seen a heating chamber (42) into which a bristle (10) is immersed, while the bristle is vertical with the bristle head (12) upwards.
• the bristle shaft (14) lies predominantly outside the heating chamber and the bristle foot (16) is held by a bristle carrier (30).
• the bristle has an undercut (17). This undercut (17) can be advantageously used for fixing the bristle in a brush. However, this undercut (17) can already be used to hold the bristle in the described method in the bristle carrier (30).
• Fig. 4 the imaginary boundary of the heater is sketched as a dashed line, as it extends as a plane over the opening of the heating chamber away.
• the bristle (10) has a certain immersion depth (t). This is measured between the relevant plane and the end of the bristle head (12).
• the figure also shows the clear diameter (d). This diameter (d) is measured radially to the longitudinal axis of the bristle (L). It describes the smallest free diameter that the bristle has in the boiler room (42).
• FIG. 5 shows by way of example three bristles which can be produced by the method disclosed here. Shown in each case are bristles with bristle shaft (14) and bristle base (16), which has an undercut (17). Providing an undercut (17) is advantageous both for producing particularly gentle brushes and for handling the bristles in this method. However, the method is equally suitable for bristles of any foot shape, including those without undercut (17).
• the first shown head profile is a spherical one.
• the diameter of the ball which is best measured in the horizontal, is about twice as large as the shaft diameter.
• the second bristle shown has an elliptical head profile (20). Their diameter is axially to the bristle longitudinal axis (da) is about three times as large as the diameter of the shaft.
• the next figure shows a mushroom-shaped head profile (20).

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• Brushes (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40227703

Family Applications (1)

Country Status (8)

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Citations (7)

Family Cites Families (11)

• 2007
  • 2007-12-06 DE DE102007059016A patent/DE102007059016A1/de not_active Withdrawn
• 2008
  • 2008-10-08 BR BRPI0820907-3A patent/BRPI0820907A2/pt not_active IP Right Cessation
  • 2008-10-08 JP JP2010536336A patent/JP2011505210A/ja active Pending
  • 2008-10-08 CN CN2008801192270A patent/CN101888797B/zh active Active
  • 2008-10-08 US US12/745,021 patent/US20100299859A1/en not_active Abandoned
  • 2008-10-08 WO PCT/EP2008/008465 patent/WO2009071141A1/de active Application Filing
  • 2008-10-08 EP EP08802813.9A patent/EP2217107B1/de active Active
  • 2008-10-08 RU RU2010119387/12A patent/RU2476133C2/ru not_active IP Right Cessation

Patent Citations (7)

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