BE1023624B1 - Method and device for producing a brush or a brush and support for a brush or a brush - Google Patents

Abstract

The invention relates to a method for producing a brush, which has a carrier (10) made of thermoplastic material with at least one anchoring opening (22) into which at least one bristle element (12) is inserted and anchored therein without anchoring, characterized by the following steps: the carrier (10) is provided with at least one anchoring opening (22); the bristle element (12) is inserted into the anchoring opening (22); the carrier (10) is heated in an area laterally adjacent to the anchoring opening (22) to a temperature which is below the melting temperature of the material of the carrier (10), in particular at most 85% in ° C of the respective melting temperature of the material of the carrier ( 10) is; the carrier (10) is deformed by means of a pressing tool (24) in a direction inclined to the longitudinal axis of the anchoring opening (22) so that the cross section of the anchoring opening (22) is reduced in such a way that the bristle element (12) in the anchoring opening ( 22) is anchored. The invention also relates to a device with which this method can be carried out, and a carrier (10) which can be equipped with a bristle element (12) by means of this method.

Description

Method and device for producing a brush or a brush, as well as a carrier for a brush or a brush

The invention relates to a method and a device for producing a brush or a brush, which has a carrier made of thermoplastic material with at least one anchoring opening, in which at least one bristle element is inserted and anchored therein in an anchorless manner. The invention further relates to a carrier of a brush or a brush, which consists of thermoplastic material and has at least one anchoring opening, in which an anchorless bristle element is inserted.

In the manufacture of brushes, in particular toothbrushes, but also household brushes, two methods have become established in practice, namely the fixing of the bristle tufts by means of an anchor (metal plate or wire loop) or anchorless. The anchorless method, in contrast to the use of an anchor before that the bristle tufts is not folded and fastened at its fold in the bristle carrier, but at one end to the bristle carrier by gluing or thermally locked. A common, enforced in practice method provides that the bristle carrier has openings through which the bristle tufts are inserted. With their back end, the bristle tufts protrude from the openings and are heated on the back of the bristle carrier. The thermoplastic material of the bristles melts with it, whereby the bristles materially merge into each other and a thickening results, by means of which pulling out of the individual bristles forward impossible. Usually, the numerous bristle tufts are liquefied on the back by means of hot air or a hot stamp, so that the material of the individual bristle tufts merges into one another and on the back results in a kind of layer of liquefied bristle ends. Subsequently, this back is covered, in particular overmolded.

A disadvantage of this solution is that a considerable procedural and device-related overhead must be operated due to this back-side necessary cover. It should be noted that especially in the case of toothbrushes, the transition surfaces between adjacent layers are made as gap-free as possible in order to avoid hygiene problems.

The term "bristle carrier" is to be understood that part of the finished brush which carries the bristle or bristle tufts. The bristle carrier can be the entire brush body, so in a toothbrush so the integrally molded part of stem, neck and head, or even a prefabricated part of the future brush body. In the latter case, the bristle carrier is usually a thin plate made of thermoplastic material, which is provided with one or more openings for filling with one or more bristles or bristle tufts. After filling and fastening of the bristles, the plate-like bristle carrier is then either inserted into a prefabricated brush body which, for example, has a corresponding recess for the platelet-like bristle carrier. Alternatively, this is the usual case, the plate-like bristle carrier is encapsulated and thus results in a brush body of prefabricated bristle carrier and molded remainder.

CH 672 579 A5 proposes a method for fixing bristle tufts in a bristle carrier by means of an anchor plate. This means that the bristle tufts are folded, and in the folding area is the anchor plate, which presses into the wall of the anchoring opening and thus permanently fixes the bristle tufts on the bristle carrier. However, in order that the opening on the end face of the bristle carrier is closed optimally, so that no bacteria and spores can colonize and multiply here, a bead on the bristle carrier which revolves around the anchoring opening and projects from the front side should be pressed inwards. The bristle tuft itself, however, is not secured by this reshaping of the bead, but by the anchor itself. The individual bristle tufts are successively hammered into the bristle carrier via a tamping tool which pushes the folded bristle tuft through a tube. The tube itself then has on its front side a heater that rests exclusively on the bead and this brings to melting or plasticized and then pushes radially inward.

In addition to the above-mentioned possibilities for anchorless attachment of the bristle or bristle tufts on the bristle carrier in theory, yet another method has been found, but could never prevail in practice, namely the collision of bristle tufts in a bristle carrier, the openings and the is preheated. After the bristle tufts have been pushed into the soft bristle carrier, the bristle carrier is pressurized on its front side, from which the tufts protrude, by means of a press, so that the soft material is compressed around the edge of the openings and the openings are reduced in cross section. In the following some concepts are presented.

DE 198 53 030 A1 provides that bristle tufts on their rear side have fused bristles to a thickening. The bristle carrier has openings into which cylindrical projections of a heater are inserted before the tufts of bristles are tapped, without touching the edge of the opening. Due to this radiant heat, the inside edge of the openings is heated locally. The bristle carrier is brought in the region of the edge to a joint-changing temperature, for example, the softening temperature. Due to the increase in temperature, the hole should be reduced in its cross-section, so that the bristle tufts must penetrate into the wall upon impact. After removing the heater, the bristle tufts are then pushed with the thickened end into the openings, wherein the thickening in cross-section is greater than the opening cross-section, so that the thickening in the soft region of the opening defining and surrounding edge, ie in the corresponding wall penetrates. Subsequently, the front of the bristle carrier is deformed with a stamp, so that the material of the bristle carrier is pressed against the bristle tufts and anchor them.

From US 5,224,763 a similar method is known in which the bristle carrier has a bead-like protruding opening edge. Again, the edge of the opening is heated by a pin-shaped heating element projects into the opening or worked with hot air. The opening itself is smaller in cross-section than the thickened end of the bristle tufts, so that it is fixed therein after being pushed into the wall of the soft opening. The bristle tuft holder then compresses the heated circumferential bead so that additional material is available to close the opening at the transition to the face of the bristle carrier.

From EP 0 355 412 A1 a method is known in which the thickened end of the bristle tufts and / or the edge of the opening in the bristle carrier are heated, wherein the dimensions and the temperatures are chosen so that after the abutment of the thickened end of the edge the opening inward urges and so, similar to a snap connection, the thickened end includes and receives it form-fitting.

EP 0 472 557 B1 proposes penetrating with a heated stamp having pins into a plastic plate-shaped bristle carrier so that the pins form the openings for receiving the bristle tufts. The bristle tufts are then pressed into the embossed, still hot openings and the melt rises around the thickening of the bristle tufts around. A mold plate may also be pressed against the top of the bristle carrier to still form the melt. In this case, it is particularly preferred that projections or beads protrude on the upper side of the not yet formed bristle carrier, which form material which is available as material which is pressed in the direction of the opening.

In the method according to DE 34 22 623 A1, a bristle carrier, which is designed plate-shaped and without openings, welded to bristle tufts, which consist of the same plastic as the bristle carrier. A heating tool is moved between the not yet welded together sides of the bristle carrier and the tufts of bristles, so that both are melted. Subsequently, the bristle tufts are pressed into the molten material of the bristle carrier.

The object of the invention is to provide a significantly simpler method for producing a brush or a brush, which also requires less effort on the device side, but at the same time ensures a secure anchoring of the bristle element used in the anchoring opening.

This object is achieved by a method for producing a brush or a brush, which has a carrier made of thermoplastic material with at least one anchoring opening, in which at least one bristle element is inserted and anchored therein anchorless, characterized by the following steps: the carrier is with provided at least one anchoring opening; the bristle element is inserted into the anchoring opening; the carrier is heated in a region adjoining the anchoring opening to a temperature below the melting temperature of the material of the carrier, in particular not more than 85% in ° C of the respective melting temperature of the material of the bristle element and / or the material of the carrier; and the carrier is deformed by means of a pressing tool in a direction oblique to the longitudinal axis of the anchoring opening so that the cross section of the anchoring opening is reduced such that the bristle element is anchored in the anchoring opening. The invention is based on the recognition that the anchoring opening, in simple terms, can be plastically narrowed with very little effort by lateral pressure so that the bristle element is securely anchored in it. For this purpose, the material of the carrier is heated to a temperature which is (preferably significantly) below its melting temperature, so that the material of the carrier flows within certain limits when it is pressed against the bristle element, and remains there when the pressing tool has been removed again , It is particularly advantageous that the pressing tool engages laterally, that is, on a surface from which the bristle element does not exit from the carrier. Therefore, the pressing tool can not come in contact with the bristle member, and the temperature properties used to press the inner wall of the anchoring opening with the bristle member do not have to take into account the material properties of the bristle member.

As used herein, the term "carrier" refers to the supporting portion of the brush or brush to which the bristle or bristles are attached, directly or indirectly, in some cases, the bristles are attached directly to the carrier by tufting into one or more anchoring apertures in the brush However, in the case of, for example, a "twisted brush" such as an interdental brush or a mascara brush, the bristles are held in a twisted metal wire which is inserted into the anchoring opening of the carrier. In this example, the bristles are thus indirectly attached to the carrier.

As used herein, the term "bristle element" refers to either the bristle (s) themselves or a component carrying the bristle (s) and plugged into the anchoring aperture An example of a single bristle is cleaning elements made, for example, of TPE or silicone An example of bristles is a bristle tuft as used in toothbrushes, household brushes, etc. An example of a component that carries the bristle (s) and is plugged into the anchoring orifice is as above addressed interdental or mascara brush, wherein the bristle element is the twisted metal wire, in which the bristles are held and which is inserted into the anchoring opening of the carrier.

The term "anchoring aperture" refers to a prefabricated recess which is either created during the manufacture of the carrier (for example in injection molding) or after the carrier is made (for example by drilling) but in any case before the bristle element is inserted. The anchoring opening is thus not generated by the insertion of the bristle element in partially softened material of the carrier.

The thermoplastic material in all embodiments is preferably made of polyester, in particular polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polypropylene (PP), polycarbonate (PC), polyamide (PA), polyvinyl acetate (PVA), polyethylene (PE), acrylonitrile Butadiene-styrene copolymer (ABS) and styrene-acrylonitrile copolymer (SAN) existing group selected. Both homopolymers and copolymers with said thermoplastics can be used.

The material of the carrier can be heated in various ways, in particular in a region laterally of the anchoring opening.

The energy required for heating can be, for example, radiant energy, so that the carrier is heated without contact.

The energy required for heating can be, for example, mechanical energy, which is introduced into the carrier, for example, similar to ultrasonic welding.

The energy required for heating can also be introduced into the material of the carrier by heat conduction from a heating tool, which is pressed against the carrier.

Preferably, the contact surface of the pressing tool cooperating with the carrier has a temperature which lies below the melting temperature of the material of the bristle element and / or the material of the carrier, in particular at most 85% of the respective melting temperature of the material of the bristle element and / or measured in ° C Material of the carrier is. The combination of pressing and heating tool results in a simplification of the process.

The contact surface of the pressing tool is preferably brought to a predetermined temperature, which is in a range between ambient temperature and 210 ° C, preferably in the range of 130 ° C and 160 ° C. These temperatures are suitable for much of the materials commonly used in making brushes and brushes.

According to a preferred embodiment, it is provided that the pressing tool, before it contacts the carrier, is heated, in particular to its predetermined maximum operating temperature and / or characterized in that the carrier is heated only after the introduction of the at least one bristle element by the pressing tool. With a previous heating of the pressing tool results in a short process time, and by the carrier is only locally heated in the assembled state, it is ensured that it has a high strength in the previous handling.

It is preferably provided that the pressing tool brings the carrier in the region of the contact surface during the advancing movement of the pressing tool to the carrier and / or upon contacting the carrier to a temperature below the melting temperature of the material of the carrier and, preferably, greater than or equal to the glass transition temperature of the material of the support, in particular in the case of a support material having a glass transition temperature greater than or equal to 300 ° Kelvin, is at most 15% higher than the glass transition temperature measured in degrees Kelvin, and 50% greater than the glass transition temperature measured in degrees Kelvin for a support material having a glass transition temperature of less than 300 ° Kelvin lies. Heating the carrier to a temperature above the glass transition temperature ensures that the material of the carrier can be plastically deformed well.

The invention and its advantageous variants described above and below provide, in particular, as support material for the use of polypropylene, of which some groups have a glass transition temperature of less than 300 ° Kelvin, others have a glass transition temperature of over 300 ° K. Other preferred substrates are PET, PBT, PA, ABS, SAN and PC. These support materials all have glass transition temperatures of over 300 ° Kelvin.

The glass transition temperature can be determined, for example, by dynamic mechanical thermal analysis (DMTA). The melting point of semicrystalline thermoplastics is considered to be the upper end of the melting range. A determination of the melting temperature can be carried out, for example, by differential scanning calorimetry (DSC). For amorphous thermoplastics, the transition to the flow or processing range is considered to be the melting temperature.

Preferably, in a first phase of the feed movement relative to the carrier, the pressing tool heats the carrier to a temperature which is above a limit temperature, at least in a region lying laterally of the anchoring opening, which, in the case of a carrier material having a glass transition temperature greater than or equal to 300 ° Kelvin, 40 % in degrees Celsius, in particular 20% in degrees Celsius below the glass transition temperature of the carrier material or, in the case of a carrier material with a glass transition temperature of less than 300 ° Kelvin, corresponds to the ambient temperature, before the pressing tool deforms the region in a second phase of the feed movement and a Inner surface of the anchoring opening presses against the bristle element.

It can also be provided that the at least one bristle element is first pushed into the receiving opening before the pressing tool has contacted the carrier, in particular before the carrier has been heated at least in the area laterally of the anchoring opening to a temperature which is above a limit temperature, the 60 % in degrees Celsius, in particular 80% in degrees Celsius corresponds to the glass transition temperature of the support material when working with a support material having a glass transition temperature greater than or equal to 300 ° Kelvin. This applies in particular to support materials such as polypropylene variants with a glass transition temperature greater than or equal to 300 ° Kelvin, PET, PBT, PA, ABS, SAN and PC. Alternatively, the limit temperature is the

Ambient temperature when working with a support material whose glass transition temperature is less than 300 ° Kelvin, which is the case in particular when using polypropylene variants with such low glass transition temperatures. The heating takes place before the pressing tool deforms the side surface in a second phase of the feed movement and presses material laterally against the anchoring opening against the at least one bristle element.

Preferably, the at least one bristle element is first pushed into the anchoring opening, before the area is heated laterally of the anchoring opening to a temperature which is at least 30 ° C above the ambient temperature, in particular before an area adjacent to an inner wall of the anchoring opening in the interior of the carrier through the Press tool is heated beyond the ambient temperature addition.

The plastics used in the present invention are, for example, copolyesters, especially Eastar ™ BR003 (having a melting temperature range of 230 to 280 ° C), polypropylenes, in particular a homopolymer such as PPH5042 having a melting temperature of 165 ° C, polycarbonate, polyamide, polyvinyl acetate or polyethylene , If these materials have a glass transition temperature above the ambient temperature, in this case 300 ° Kelvin, energy should be introduced into the carrier via the pressing tool. This is also advantageous for materials whose glass transition temperature is below ambient temperature. However, according to a variant of the invention, in such materials of the brush body it is also possible to manage without heating the carrier by the pressing tool. Then, at the ambient temperature, the deformation is achieved exclusively via the pressure of the pressing tool on the carrier.

Advantageously, the materials of the carrier are heated to the following temperatures in the method according to the invention and by the device according to the invention which is explained below:

According to one embodiment, it is provided that the pressing tool is heated in the entire contact area with the carrier. This is particularly advantageous if the pressing tool has a comparatively small contact surface with the carrier and acts in the manner of a punch which is pressed against the carrier (and slightly into its material).

According to one embodiment, it is provided that a single pressing tool acts on one side of the carrier. This design is characterized by a simple structure, since only a movable pressing tool is necessary, which presses the carrier against an abutment. This abutment can also be the holder for the carrier.

According to a preferred embodiment, a plurality of pressing tools are provided, which act from opposite sides against the carrier. As a result, the inner wall of the anchoring opening is symmetrically concentrated, resulting in a better anchoring of the bristle element in the carrier.

It is preferably provided that the pressing tool cooperates with a small part of the side surface of the carrier. As a result, locally the necessary pressing force can be applied while the carrier as a whole is not deformed and maintains its shape.

Alternatively it can be provided that at least two pressing tools are provided which cooperate with substantially the entire side surface of the carrier. This is advantageous, for example, if a plurality of, for example, elongate anchoring openings are arranged in the vicinity of the outer edge of the carrier. These can then be suitably narrowed by deforming the entire outer surface of the carrier inwards, ie toward the center.

According to one embodiment, it is provided that the pressing tool cooperates with the carrier at a distance from the end of the anchoring opening, through which the bristle element is inserted into the anchoring opening. In this configuration, the exit cross section of the anchoring opening, through which the bristle element emerges from the carrier, remains unchanged when the pressing tool deforms the inner wall of the anchoring opening.

It may alternatively or additionally be provided that the pressing tool interacts with the carrier directly in the vicinity of the end of the anchoring opening, through which the bristle element is inserted into the anchoring opening. In this design, the exit cross-section of the anchoring opening is narrowed, whereby a gap between the bristle element and the edge of the anchoring opening can be reduced or eliminated and / or the bristle element can be compressed.

Depending on the respective structural conditions of the carrier and / or the properties of the material of the carrier, the feed movement of the pressing tool is pressure and time-controlled relative to the carrier and / or pressure and path controlled.

It has been found that even a relatively short reaction time of the pressing tool is sufficient to secure the bristle element reliably in the anchoring opening. The exposure time can be at least 5 seconds, in particular at least 6 seconds, and a maximum of 15 seconds, in particular a maximum of 10 seconds, in particular at constant pressure and / or permanent heating of the carrier.

In order to deform the carrier suitably, in particular the inner wall of the anchoring opening, the pressing tool applies a pressure of at least 200 bar, in particular at least 400 bar, to the carrier.

According to a simple embodiment of the method, it is provided that the pressing tool exerts a preferably constant compressive force on the carrier for a predetermined time from the time when the carrier is contacted.

It can also be provided in more complex variants that the feed movement and / or the applied pressure of pressing tool relative to or on the carrier from the contact of the carrier by the pressing tool until reaching the maximum feed path is non-linear over time, wherein a first phase the delivery movement is slower or faster than a later second phase or the pressure is smaller or larger than in a later second phase. In this way, the resulting plastic deformation of the inner wall of the anchoring opening can be optimally adjusted depending on the respective material properties of the carrier.

It is preferably provided that the inserted into the anchoring opening end of the bristle member has a cross-section which is smaller than the cross section of the anchoring opening in the initial state. This ensures that the bristle element can be used without considerable axial forces in the anchoring opening.

According to a variant it is provided that the bristle element is at least one bristle, which has a thickened by thermal forming attachment end, which is inserted into the anchoring opening. The thickened attachment end increases the holding force in the anchoring opening.

It can also be provided that the bristle element is a tuft of bristles, wherein the bristles of the bristle tufts are combined with one another by thermal deformation. Such a bristle tufts can be handled well, in particular easily be inserted into the anchoring opening. Furthermore, when the bristles are melted together into a tuft, a thickening can be generated with little effort, with the

Bristle tufts can be attached very reliably in the anchoring opening.

According to one embodiment, the at least one anchoring opening is a blind hole. The bristle element is usually inserted to the bottom of the blind hole, so that the insertion position is self-evident.

According to an alternative embodiment, the at least one anchoring opening is a through hole. This is particularly useful when the carrier is then further processed, for example, a carrier grid for the bristles of a brush, which is then inserted into a handle, or a carrier plate for a toothbrush, which, when it is equipped with the bristle tufts is encapsulated, for example, with the material that forms the handle.

The pressing tool is displaced relative to the carrier in a direction which extends at an angle of 90 ° ± 45 ° relative to the longitudinal axis of the anchoring opening. In the simplest case, the pressing tool is moved transversely to the anchoring opening, so that the angle is 90 °. However, depending on the shape of the carrier and / or orientation of the anchoring opening (s), it can also be provided to adjust the carrier in a plane which deviates from a perpendicular to the longitudinal axis of the anchoring opening.

To achieve the above-mentioned object, a device for producing a brush or a brush is provided according to the invention, with a holder for a carrier, which is provided with at least one anchoring opening for a bristle element, a pressing tool which is adjustable relative to the holder in one direction extending at an angle of 90 ° ± 45 ° relative to the longitudinal axis of the anchoring opening, and having a heater which can heat the material of the carrier in a region laterally of the anchoring opening to a temperature below the melting temperature of the material of the carrier. This device makes it possible, with a technically simple structure, to deform the inner wall of the anchoring opening in such a way that the bristle element is reliably fixed in the latter.

Preferably, the heater is integrated into the pressing tool. This results in a compact design, since no separate heating device is necessary.

In order to adapt the pressure exerted by the pressing tool on the carrier pressure on the properties of the carrier, the pressing tool is preferably relative to the support towards this undeliverable and wegbewegbar before her, in particular pressure and time-controlled and / or pressure and path controlled.

So that the bristle element is reliably fastened in the anchoring opening, the device is designed so that the pressing tool can apply a pressure of at least 200 bar, in particular at least 400 bar, to the carrier.

According to one embodiment of the invention, it is provided that the pressing tool is designed to be heatable in the entire contact region with the carrier. The pressing tool then forms a stamp with which the carrier is locally deformed. In this case, the crimping tool may possibly be locally pressed slightly into the material of the carrier.

Preferably, a control is provided which controls the feed movement of the pressing tool relative to the carrier and the heater so that the pressing tool, before it contacts the carrier, is heated, in particular to its predetermined maximum operating temperature, and / or so controls that the carrier first is heated after introduction of the at least one carrier by the pressing tool.

The control is preferably programmed so that the pressing tool can be heated to such a temperature and delivers the pressing tool to the carrier that the pressing tool the carrier in the region of the contact surface with the pressing tool during the feed movement of the pressing tool to the carrier and / or at Contacting the carrier to a temperature which is below the melting temperature of the material of the carrier and, preferably, greater than or equal to the glass transition temperature of the material of the carrier, in particular wherein the controller is programmed programmed to be greater than or equal to a carrier material having a glass transition temperature 300 ° Kelvin the temperature of the pressing tool sets a maximum of 15% above the glass transition temperature in degrees Kelvin and sets a substrate with a glass transition temperature of less than 300 ° Kelvin maximum 50% above the glass transition temperature in degrees Kelvin. In this way results in an optimal deformability of the material of the wearer.

To achieve the above-mentioned object, a carrier of a brush or a brush is provided according to the invention, which consists of a thermoplastic material and has at least one anchoring opening, in which an anchorless bristle element is used, wherein a region of the material of the carrier adjacent to an inner wall of the anchoring opening is plastically deformed in a direction oblique to the longitudinal axis of the anchoring opening, that the cross-section of the anchoring opening is reduced and the bristle element is firmly anchored in the anchoring opening. Such a support with reliably fastened in the anchoring opening bristle element can be produced with little effort.

The carrier according to the invention can be used in many ways, since different bristle elements can be used in it. A non-exhaustive list of examples of bristle elements that may be inserted into and secured to the anchoring aperture include a twisted metal wire of an interdental or mascara brush, a toothbrush bristle tuft, a cleaning element made of TPE, silicone or similar elastic material. a bristle bundle of a household brush, a bristle bundle of a facial or health brush and a bristle bundle of a brush, such as a nail polish brush.

The carrier preferably has at least one lateral pressing region, from which the material of the carrier has been laterally deformed such that the cross section of the anchoring opening is reduced. The pressing region can be provided, for example, recessed on the carrier, so that its bottom region, in which the pressing tool acts on the carrier, is not immediately visible.

It is expressly pointed out at this point that the advantages and features mentioned above in connection with the method according to the invention are also applicable to the device according to the invention and the carrier according to the invention, individually or in combination, according to the method according to the invention.

Further features and advantages of the invention will become apparent from the following description and from the following drawings, to which reference is made. In the drawings: FIG. 1 shows schematically a first step of the invention

Method for producing a carrier according to the invention by means of a device according to the invention; FIG. 2 schematically shows a second step of the invention

Method for producing a carrier according to the invention by means of a device according to the invention; - Figure 3 schematically a first step of the invention

Method in an embodiment, wherein the bristle element is an interdental or mascara brush; - Figure 4 is a section along the plane IV-IV of Figure 3; - Figure 5 is a plan view schematically a second step of the embodiment of Figure 3; FIG. 6 schematically shows a variant of the embodiment shown in FIG. 3; FIG. 7 shows in a schematic section an alternative embodiment of the carrier according to the invention which can be used in the method according to the invention; - Figure 8 in a schematic section further variants of the carrier according to the invention, which can be used in the inventive method; - Figure 9 in a schematic section a further variant of the carrier according to the invention, which can be used in the inventive method; and FIG. 10 is a schematic plan view of further variants of how a device according to the invention can be produced with a device according to the invention.

FIGS. 1 and 2 schematically show a device with which a carrier 10 can be equipped with at least one bristle element 12 in order to produce a brush or a brush (possibly by further processing steps).

The carrier 10 is made of a thermoplastic material, in particular of polypropylene, ABS, PA, PBT, PET or PC.

The carrier 10 is the element of the brush or brush that carries the bristles or bristles-like components. The carrier may be, for example, the head of a toothbrush. The carrier can also be designed as a carrier plate which is equipped with bristles and then molded with plastic to form a toothbrush. The carrier may also be a carrier grid which is fitted with bristles and then connected to a handle. In this way, a broom, a brush, a household brush or a health brush can be made, such as a facial brush. For the bristle element 12, different examples are shown in FIG.

The upper bristle element 12A here is a tuft of bristles, which is formed by a plurality of fine bristles 13, which are combined into a tuft. On the bristle tuft side, which is intended to be inserted into the carrier 10, the bristles are fused together so that a "foot" 14 is created, that is, a thickening formed by molten material of the bristles. The bristle tufts can equip a toothbrush, a household brush or a health brush, such as a facial brush. The bristle tuft can also equip a nail polish brush.

The bristles can be preprocessed, for example rounded.

The second bristle element 12B, counted from above, is here a cleaning element, which consists for example of TPE or silicone and is attached to a brush head of a toothbrush. It also has a foot 14, here embodied as an end thickened relative to the body of the cleaning element.

The third bristle element 12C counted from above is an interdental or mascara brush having a shaft 16 to which a plurality of bristles 13 are attached.

The lower bristle element 12D consists of a few bristles 13, which are combined to form a bundle of bristles. For this purpose, in the same way as in the bristle element 12A, the bristles are welded together at one end, so that a foot 14 is formed. The bristle bundle is intended to populate a broom.

The bristles of the bristle elements 12A, 12C and 12D may be made of a thermoplastic, in particular PA, PBT, polyester, copolyester or polypropylene.

The carrier 10 is fixed in a holder 18. The holder 18 serves to hold the carrier 10 in the respective station so that the respective processing step can be performed.

In FIG. 1, the processing step consists in equipping the carrier 10 with at least one bristle element 12. For this purpose, a schematically indicated loading station 20 is provided with which the corresponding bristle element 12 can be inserted into an anchoring opening 22 in the carrier 10.

The anchoring opening extends here from one side of the carrier 10 into the carrier 10 over a predetermined depth. It is executed in the embodiment of Figures 1 and 2 as a blind hole.

The bristle elements 12 and the anchoring opening 22 are designed so that the bristle elements 12 can be inserted into the anchoring opening 22 (almost) without friction. In particular, the dimensions of the cross section of the anchoring opening 22 are greater than the dimensions of the cross section of the foot 14 of the bristle elements or of the shaft 16.

Therefore, the bristle elements 12, after they were used in the first processing step in the carrier 10, once not fixed in the carrier 10. Also, no anchors are used to anchor the bristle elements 12 in the carrier.

After the carrier 10 is equipped with one or more bristle elements 12, a second processing step, which is shown in FIG. 2, takes place. This takes place by means of a pressing tool 24 shown schematically.

Also in the second processing step, the carrier 10 is fixed in a holder 18. This may be the same holder 18 in which the carrier 10 was also in the first processing step; in this case, the

Carrier 10 weiterverstellt either to the next processing station, or the second processing step takes place at the same location at which also the first processing step was carried out. But it can also be another holder 18; In this case, the loaded carrier 10 was continued by means of a transport device.

In the second processing step, two pressing tools 24 are used, which press from opposite sides against opposite side surfaces 26 of the carrier 10, ie act on other sides of the carrier 10 than on the side on which the bristle elements 12 extend out of the carrier 10.

The pressing tools 24 are designed in the manner of punches and can be delivered in the direction of the arrows P against the side surfaces 26 of the carrier 10. In this case, the direction P in which the pressing tools are delivered is approximately perpendicular to the longitudinal axis L of the anchoring opening 22.

Depending on the respective design conditions, certain deviations of the adjustment direction of the pressing tools 24 from a direction perpendicular to the longitudinal axis L of the anchoring opening 22 may be expedient. In principle, however, press the pressing tools 24 always obliquely and substantially transverse to the longitudinal axis L of the anchoring opening. The component of the adjustment direction acting perpendicular to the longitudinal axis L is (preferably significantly) larger than the component acting parallel to the longitudinal axis.

The pressing tool 24 is pressed against the carrier 10 with a considerable force. Depending on the design constraints, pressures above 200 bar can be used, preferably at least 400 bar.

The contact time of the pressing tools 24 on the side surfaces of the carrier 10 is at least 5 seconds, in particular at least 6 seconds and a maximum of 15 seconds, in particular a maximum of 10 seconds.

As a result of the action of the pressing tools 24, a plastic deformation of the material of the carrier 10 occurs. As can be seen in FIG. 2, material of the carrier 10 is displaced into the anchoring opening 22, so that the cross section of the anchoring opening 22 is reduced. Specifically, the inner wall of the anchoring opening 22 abuts the bristle element 12 inserted therein, which is thereby reliably secured in the anchoring opening and thus anchored to the carrier 10.

If the bristle element 12 is provided with the foot 14, this increases the anchoring effect, since the clamping effect between the inner wall of the anchoring opening 22 and the bristle element 12 addition still acts a mechanical lock.

In order to facilitate the flow of the material of the carrier 10, it is preferably brought to a temperature advantageous for this purpose. For this purpose, a heater 30 is provided, can be introduced with the heat in the carrier 10 in the area in which the pressing tool 24 acts on him, ie in particular in the region of the corresponding side surface 26 and the underlying material region side of the anchoring opening 22nd

In principle, it is possible to provide a heater separately from the pressing tools 24 in order, for example, to introduce into the carrier 10 by means of radiation or vibration the energy which leads there locally to a heating.

Preferably, however, the heater 30 is integrated into the pressing tool 24, in the vicinity of the pressing surface, with which the pressing tool 24 acts on the carrier 10 (that is, with respect to the direction P in the vicinity of the front end face of the pressing tool 24).

In the embodiment shown in Figure 2, the heater 30 is designed as an electric heater, ie as a resistance heater, which is attached to the pressing tool 24 or integrated into this.

In the preferred embodiment, the pressing surface of the pressing tool 24 is heated by the heating device to a temperature which is below the melting temperature of the material of the carrier 10. In particular, it is at most 85% calculated in degrees Celsius of the respective melting temperature of the material of the carrier 10. If the carrier material, for example, a melting temperature of 100 ° C, the temperature of the pressing tool 24 when it is pressed against the carrier 10, at most 85 ° C.

The temperature to which the carrier 10 is brought in the region of its side surface 26 in which the pressing tool presses against the side surface 26 should be not only below or below the melting temperature of the material of the carrier 10, but in a range of the glass transition temperature of the support material. With extremely high pressure, e.g. is above 600 bar, it would be possible to heat the carrier 10 in the region of the side surface 26 only to a temperature which is above a limit temperature, which is 60% in degrees Celsius, especially 80% in degrees Celsius of the glass transition temperature of the carrier material, if the support material has a glass transition temperature greater than or equal to 300 ° Kelvin. However, this limit temperature is preferably at or minimally above the glass transition temperature. For a support material with a glass transition temperature of less than 300 ° Kelvin, the heating temperature is a maximum of 50% above the glass transition temperature in degrees Kelvin calculated.

It should be emphasized in general that this does not only refer to the illustrated embodiments that the support 10 should not be brought close to its melting temperature, but clearly away from it close to the glass transition temperature. In particular, the heating temperature and thus also the temperature at the side surfaces 26 in the area of the pressing tools 24 should not be higher than 15% above the glass transition temperature of the carrier material.

An embodiment of the invention provides that the side surfaces 26 are heated in the region of the pressing tools 24 and thus the carrier 10 to a temperature of at most 140 ° C, in particular at most 130 ° C, preferably in the range of 100 to 115 ° C. In particular, polypropylene, PET (85 to 90), ABS and SAN are used as materials for the carrier. In the case of PET, it may be sufficient and advantageous to heat the side surfaces to a temperature in the range of only 85 ° C to 90 ° C.

If the carrier material is a material such as certain types of polypropylene in which the glass transition temperature is not above the ambient temperature, heating of the pressing tool 24 can be dispensed with, but this does not necessarily have to be the case. Here, too, a minimum heating may be advantageous just above the glass transition temperature, but again well below the melting temperature. If it is not necessary to heat up such support materials, the anchoring openings 22 are reduced exclusively by applying the aforementioned pressure and applying the mentioned contact time in cross section. It is possible to use pressing tools 24 without heating or pressing tools 24 with heating, the heater is simply not activated.

In order to control the corresponding movements and temperatures exactly, the device has a control, not shown here, with which not only the heating temperature, but also the pressure applied and the movements are controlled. For the sequence of movements different, mutually combinable variants are possible.

The dies may either remain constantly heated to the desired operating temperature, or they may not be heated until they are in contact with the side surfaces 26 of the carrier.

The dies may abut the side surfaces 26 in a first phase at low pressure to heat the material of the carrier 10, and then in a second phase with the o.g. high pressure against the side surfaces 26 and if necessary. be pushed into it. Alternatively, the pressing tools 24 may be continuously pressed against the side surfaces 26 with a predetermined force, so that the same pressure is constantly acting there.

The pressing tools can be acted upon by force, time and / or path controlled against the side surfaces 26 of the support 10.

Regardless of the carrier material applies: During the feed movement of the pressing tools 24 relative to the carrier 10, a pressure and time-controlled feed movement and / or a pressure and path-controlled feed movement may be advantageous. In particular, it is advantageous if in a first phase of the feed movement of the area below the pressing tools 24 within the carrier lying region of the material of the carrier 10 is heated to a temperature which is above a limit temperature. This limit temperature is 60%, in particular 80% below the glass transition temperature of the support material, determined in degrees Celsius, when the support material has a glass transition temperature of about 300 ° Kelvin. However, the limit temperature is preferably at a glass transition temperature, at most up to 20% above the glass transition temperature in degrees Celsius. In a subsequent second phase of the feed movement of the carrier 10 is laterally of the anchoring opening 22 plastically deformed, so that the inner wall of the anchoring opening 22 is pressed against the bristle member 12 and this fixed in the anchoring opening 22.

After the contact time of the pressing tools 24 has expired, they are moved back again, and the bristle element 12 is reliably anchored in the carrier 10.

The carrier 10 can then be removed and if necessary. be further processed. For example, in the case of a toothbrush, the bristles can be further processed, for example cut to a desired profile. For example, the carrier 10 can also be overmolded with plastic material so that it is fastened to a handle or a handle.

In a variant, not shown, a single pressing tool 24 can be used, which acts on one side of the carrier 10. The pressing tool 24 will then press the carrier 10 against an abutment on which it is supported. The abutment can either provide for a large-area support, so that the inner wall of the anchoring opening 22 is plastically deformed only on one side, or the abutment can provide for a small-area support comparable to the contact surface of the pressing tool 24, so that it by the action of the reaction force of the abutment The same two-sided deformation occurs as with the use of two diametrically opposed pressing tools. In this case, a heater 30 may be provided in the abutment.

In another embodiment, not shown, more than two pressing tools can be used, for example, three pressing tools, which are arranged at an angle of 120 ° relative to each other.

Generally, when more than one die is used, the dies are distributed symmetrically.

FIGS. 3 to 5 show in detail an embodiment in which the bristle element 12 is an interdental or mascara brush. The shaft 16 is a twisted metal wire in which a plurality of bristles 13 are held.

The carrier 10 is for example a handle or a short plastic shaft which can be locked in a handle.

The carrier 10 is provided with two opposing recesses 32, which extend from the here generally cylindrical side surface 26 of the carrier 10 to the longitudinal axis. The recesses 32 are designed so deep that between their bottom surface and the inner wall of the anchoring opening 22 a minimum wall thickness stops. This minimum wall thickness is dimensioned with respect to the dimensions of the bristle element 12 and the forces acting and may be, for example, in the order of 0.2 to 1.0 mm in the case of an interdental or mascara brush and, for example, in the case of a bristle bundle for a broom, of the order of magnitude from 2.0 to 4.0 mm.

The recesses 32 serve to set the thickness of the material area between the engagement surface of the pressing tool 24 (here, the bottom surface of the corresponding recess 32) and the inner wall of the anchoring opening 22 to a desired value, in view of the desired plastic deformation of the material of the carrier 10 is advantageous.

A further effect of the recesses 32 is that the contact points between the pressing tools 24 and the carrier 10 are not prominently arranged on the side surface of the carrier 10, but reset to the inside, where they are not immediately visible. This is particularly advantageous if the surface irregularities resulting from the plastic deformation of the carrier 10 are undesirable for optical reasons.

The pressing tools 24 and the recesses 32 are dimensioned relative to each other so that the pressing tools 24 dive into the recesses and attack on the bottom surface (see Figure 5).

Thereby, the material of the carrier 10 is deformed under the effect of the applied pressure and / or the applied temperature so that the inner wall of the carrier 10 to the twisted metal wires of the interdental or

Mascarabürstchens firmly applies, so that it is reliably fixed in the anchoring opening 22.

In order to improve the retention of the metal wires, they can be mechanically deformed in advance, for example flattened, kinked or bent over. Care should be taken here that the resulting dimensions do not exceed the diameter of the anchoring opening.

The recesses 32 are here arranged so that the anchoring opening 22 is plastically deformed adjacent to its bottom. The front region of the anchoring opening 22, through which the bristle element 12 exits therefrom, is not influenced by the deformation process.

Similarly, only with an adapted with respect to their dimensions anchoring opening 22, a nail polish brush can be made. The carrier is designed in the manner of a stem, which is connected to the lid of the nail polish bottle. In the anchoring opening then a bristle tuft is used with comparatively long bristles.

FIG. 6 shows a variant in which the pressing tools 24, viewed in the circumferential direction, do not act on the material laterally of the anchoring opening 22 over a small angular range, but over (almost) the entire circumference. This can be adjusted by the shape of the end faces of the pressing tools 24.

FIG. 7 shows an embodiment in which the anchoring opening 22 in the carrier 10 is not designed as a blind hole but as a passage opening. The bristle element 12 then extends completely through the carrier. For example, it may be pushed from the back of the carrier 10 through the anchoring opening 22 until the foot 14 abuts the rear surface of the carrier 10.

The pressing tools are indicated here only schematically by means of the arrows P.

FIG. 8 shows an exemplary embodiment in which not only an anchoring opening 22, which extends perpendicular to the front side 28 of the carrier 10, but also an anchoring opening 22, which extends obliquely to the front side 28, is present in a carrier 10. Dashed lines contact surfaces K between the pressing tools 24 and the side surface 26 of the carrier are shown. It can be seen that the contact surfaces K are aligned parallel to the front side 28 here. If desired, the longitudinal direction of the contact surfaces K can also be oriented differently, for example, perpendicular to the longitudinal axis of the anchoring opening 22 shown on the right.

FIG. 9 shows a further variant, which differs from the variant shown in FIG. 8 with regard to the arrangement of the contact surfaces relative to the front side 28 of the carrier 10. While in the variant according to FIG. 8 the contact surfaces K are set back relative to the front side 28 of the carrier 10, they are arranged directly adjacent to the front side 28 in the embodiment according to FIG. This results in that the anchoring opening 22 is narrowed in the region of the front side 28. Depending on the application, the gap between the bristle element 12 and the inner wall of the anchoring opening 22 can thereby be reduced or even completely closed so that no contaminants can penetrate into the anchoring opening 22.

In FIG. 10, a plurality of anchoring openings 22 with different cross-sectional shapes and a plurality of pressing tools 24 are shown by way of example on a carrier, which act on the carrier 10 in such a way that the anchoring openings 22 are suitably narrowed after a bristle element has been inserted into them.

The cross section of the anchoring opening 22A here has the shape of a curved elongated hole. The anchoring opening 22A cooperates with a pressing tool 24A whose width is slightly less than the width of the anchoring opening 22A.

The cross section of the anchoring opening 22B has a rectangular shape.

The cross section of the anchoring opening 22C has the shape of a portion of a circular ring.

The cross section of the anchoring opening 22D consists of a straight section and a circular arc.

The anchoring openings 22B, 22C and 22D is a single one

Assigned pressing tool 24 B, which acts on the carrier 10 so that the

Inner cross section of the anchoring openings 22 B, 22 C and 22 D is narrowed at the level of the pressing tool 24 B.

If desired, an additional pressing tool 24D may be provided which acts on the arcuate end portion of the anchoring opening 22D.

The anchoring openings 22E, 22F and 22G correspond in their cross-sectional shapes to the anchoring openings 22B, 22C and 22D. The difference is that each anchoring opening 22E, 22F and 22G is associated with a separate pressing tool 24E, 24F and 24G. These can be configured in the desired manner with regard to their front side, that is to say the contact surface with the carrier 10.

The pressing tool 24E is here designed with an end face which is wider than the cross section of the anchoring opening 22E.

The pressing tools 24F, 24G are here designed with an end face which is concave.

The various features of the described embodiments and embodiments can be combined with one another in any desired manner.

Claims (42)

claims A method of making a brush or brush comprising a carrier (10) of thermoplastic material having at least one anchoring opening (22) into which at least one bristle element (12) is inserted and anchored therein in an anchorless manner, characterized by the following Steps: the carrier (10) is provided with at least one anchoring opening (22), the bristle element (12) is inserted into the anchoring opening (22), the carrier (10) is in a laterally adjacent to the anchoring opening (22) on a Heated temperature which is below the melting temperature of the material of the carrier (10), in particular at most 85% in ° C of the respective melting temperature of the material of the carrier (10), the carrier (10) by means of a pressing tool (24) in one direction obliquely to the longitudinal axis of the anchoring opening (22) deformed so that the cross section of the anchoring opening (22) is reduced such that d the bristle element (12) is anchored in the anchoring opening (22). 2. The method according to claim 1, characterized in that the thermoplastic material is selected from the polyester, in particular polyethylene terephthalate (PET) and polybutylene terephthalate, polypropylene (PP), polycarbonate (PC), polyamide (PA), polyvinyl acetate (PVA), polyethylene (PE), acrylonitrile-butadiene-styrene copolymer (ABS) and styrene-acrylonitrile copolymer (SAN) existing group. 3. The method according to any one of the preceding claims, characterized in that with the carrier (10) cooperating contact surface of the pressing tool (24) has a temperature below the melting temperature of the material of the bristle element (12) and / or the material of the carrier ( 10), in particular at most 85% of the measured in ° C respective melting temperature of the material of the bristle element (12) and / or the material of the carrier (10). 4. The method according to claim 3, characterized in that the contact surface of the pressing tool (24) is brought to a predetermined temperature which is in a range between ambient temperature and 210 ° C, preferably in the range of 130 ° C and 160 ° C. 5. The method according to any one of the preceding claims, characterized in that the pressing tool before it contacts the carrier (10), is heated, in particular to its predetermined maximum operating temperature and / or characterized in that the carrier (10) only after the introduction the at least one bristle element (12) is heated by the pressing tool (24). 6. The method according to any one of the preceding claims, characterized in that the pressing tool (24) the carrier (10) in the region of the contact surface during the feed movement of the pressing tool (24) to the carrier (10) and / or upon contact of the carrier (10). brings to a temperature below the melting temperature of the material of the carrier (10) and, preferably, greater than or equal to the glass transition temperature of the material of the carrier (10), in particular in a carrier material having a glass transition temperature greater than or equal to 300 ° Kelvin a maximum of 15% is measured in degrees Kelvin glass transition temperature and is at a substrate with a glass transition temperature of less than 300 ° Kelvin a maximum of 50% above the measured in degrees Kelvin glass transition temperature. 7. The method according to any one of the preceding claims, characterized in that the pressing tool (24) in a first phase of the feed movement relative to the carrier (10) heats the carrier (10) at least in a side of the anchoring opening (22) lying region to a temperature , which is above a limit temperature, which, in a substrate having a glass transition temperature of greater than or equal to 300 ° Kelvin, 40% in degrees Celsius, in particular 20% in degrees Celsius below the glass transition temperature of the support material or, in a substrate having a glass transition temperature of less than 300 ° Kelvin, corresponding to the ambient temperature, before the pressing tool (24) deforms the area in a second phase of the feed movement and presses an inner surface of the anchoring opening (22) against the bristle element (12). 8. The method according to any one of the preceding claims, characterized in that the at least one bristle element (12) is first pushed into the receiving opening before the pressing tool (24) has contacted the carrier (10), in particular before the carrier (10) at least in The area laterally of the anchoring opening (22) has been heated to a temperature above a limit temperature, which, in a substrate having a glass transition temperature greater than or equal to 300 ° Kelvin, 60% in degrees Celsius, especially 80% in degrees Celsius of the glass transition temperature of the support material corresponds to or, in the case of a carrier material with a glass transition temperature of less than 300 ° Kelvin, corresponds to the ambient temperature. 9. The method according to any one of the preceding claims, characterized in that the at least one bristle element (12) is first pushed into the anchoring opening (22) before the area is heated laterally of the anchoring opening (22) to a temperature which is at least 30 ° C. is above the ambient temperature, in particular, before an area adjacent to an inner wall of the anchoring opening (22) in the interior of the carrier (10) is heated by the pressing tool beyond the ambient temperature. 10. The method according to any one of the preceding claims, characterized in that the pressing tool (24) in the entire contact area with the carrier (10) is heated. 11. The method according to any one of the preceding claims, characterized in that a single pressing tool (24) acts on one side on the carrier (10). 12. The method according to any one of claims 1 to 10, characterized in that a plurality of pressing tools (24) are provided, which act from opposite sides against the carrier (10). 13. The method according to any one of the preceding claims, characterized in that the pressing tool (24) cooperates with a small part of the side surface of the carrier (10). 14. The method according to any one of claims 1 to 12, characterized in that at least two pressing tools (24) are provided which cooperate with substantially the entire side surface of the carrier (10). 15. The method according to any one of the preceding claims, characterized in that the pressing tool (24) cooperates with the carrier (10) at a distance from the end of the anchoring opening (22), through which the bristle element (12) in the anchoring opening (22 ) is used. 16. The method according to any one of claims 1 to 14, characterized in that the pressing tool (24) with the carrier (10) directly in the vicinity of the end of the anchoring opening (22) cooperates, through which the bristle element (12) in the anchoring opening (22) is inserted. 17. The method according to any one of the preceding claims, characterized in that the feed movement of the pressing tool (24) relative to the carrier (10) pressure and time-controlled and / or pressure and path controlled. 18. The method according to any one of the preceding claims, characterized in that the pressing tool (24) over a contact time of at least 5 seconds, in particular at least 6 seconds, and a maximum of 15 seconds, in particular a maximum of 10 seconds contacted the carrier (10), in particular at the same Pressure and / or permanent heating of the carrier (10). 19. The method according to any one of the preceding claims, characterized in that the pressing tool (24) applies a pressure of at least 200 bar, in particular at least 400 bar to the carrier (10). 20. The method according to any one of the preceding claims, characterized in that the pressing tool (24) from the time of contacting the carrier (10) a preferably constant compressive force over a predetermined time on the carrier (10) exerts. 21. The method according to any one of the preceding claims, characterized in that the feed movement and / or the applied pressure of the pressing tool (24) relative to or on the carrier (10) from the contacting of the carrier (10) by the pressing tool (24) until reaching the maximum delivery path is non-linear over time, wherein a first phase of the delivery movement is slower or faster than a later second phase or the pressure is smaller or larger than in a later second phase. 22. The method according to any one of the preceding claims, characterized in that in the anchoring opening (22) inserted end of the bristle member (12) has a cross section which is smaller than the cross section of the anchoring opening (22) in the initial state. 23. The method according to any one of the preceding claims, characterized in that the bristle element (12) is at least one bristle (13) having a thickened by thermal forming attachment end (14) which is inserted into the anchoring opening (22). 24. The method according to claim 23, characterized in that the bristle element (12) is a tufts of bristles, wherein the bristles (13) of the bristle tufts are combined by thermal deformation with each other. 25. The method according to any one of the preceding claims, characterized in that the at least one anchoring opening (22) is a blind hole. 26. The method according to any one of claims 1 to 24, characterized in that the at least one anchoring opening (22) is a through hole. 27. The method according to any one of the preceding claims, characterized in that the pressing tool (24) relative to the carrier (10) is adjusted in a direction relative to the longitudinal axis (L) of the anchoring opening (22) at an angle of 90 ° ± 45 °. 28. An apparatus for manufacturing a brush or a brush, comprising a holder (18) for a carrier (10) provided with at least one anchoring opening (22) for a bristle element (12), a pressing tool relative to the holder in a Direction adjustable, which extends relative to the longitudinal axis of the anchoring opening (22) at an angle of 90 ° ± 45 °, and with a heater (30), the material of the carrier (10) in a region laterally of the anchoring opening (22 ) can be heated to a temperature below the melting temperature of the material of the carrier (10). 29. The device according to claim 28, characterized in that the heater (30) in the pressing tool (24) is integrated. 30. The apparatus of claim 28 or claim 29, characterized in that the pressing tool (24) relative to the support (18) towards this undeliverable and wegbewegbar before her, in particular pressure and time-controlled and / or pressure and path controlled. 31. Device according to one of claims 28 to 30, characterized in that the device is designed so that the pressing tool (24) can apply a pressure of at least 200 bar, in particular at least 400 bar on the carrier (10). 32. Device according to one of claims 28 to 31, characterized in that the pressing tool (24) in the entire contact area with the carrier (10) is designed to be heated. 33. Device according to one of claims 28 to 32, characterized in that a control is provided which controls the feed movement of the pressing tool (24) relative to the carrier (10) and the heater so that the pressing tool, before the carrier (10 ), heated, in particular to its predetermined maximum operating temperature, and / or controls so that the carrier (10) is heated only after the introduction of the at least one carrier (10) by the pressing tool (24). 34. The apparatus of claim 33, wherein the controller is programmed to heat the die (24) to such temperature and deliver the die (24) to the carrier (10) such that the die (24) supports the carrier (24). 10) in the region of the contact surface with the pressing tool (24) during the feed movement of the pressing tool (24) to the carrier (10) and / or upon contact of the carrier (10) at a temperature below the melting temperature of the material of the carrier (10 ) and, preferably, is greater than or equal to the glass transition temperature of the material of the carrier (10), in particular wherein the controller is programmed so programmed that it at a substrate with a glass transition temperature greater than or equal to 300 ° Kelvin, the temperature of the pressing tool (24) a maximum of 15 % above the glass transition temperature in degrees Kelvin and for a substrate with a glass transition temperature of less than 300 ° Kelvin max imal 50% above the glass transition temperature in degrees Kelvin. 35. A carrier (10) of a brush or a brush, which consists of a thermoplastic material and at least one anchoring opening (22) into which a bristle element (12) is inserted, wherein a to an inner wall of the anchoring opening (22) adjacent region of Material of the carrier (10) in a direction obliquely to the longitudinal axis of the anchoring opening (22) is plastically deformed so that the cross section of the anchoring opening (22) is reduced and the bristle element (12) firmly anchored in the anchoring opening (22). 36. Carrier (10) according to claim 35, characterized in that the bristle element (12) is a twisted metal wire of an interdental or mascara brush. 37. Carrier (10) according to claim 35, characterized in that the bristle element (12) is an anchorless bristle tufts of a toothbrush. 38. Carrier (10) according to claim 35, characterized in that the bristle element (12) is a cleaning element which consists of TPE, silicone or a similar elastic material. 39. Carrier (10) according to claim 35, characterized in that the bristle element (12) is a bristle bundle of a household brush. 40. Carrier (10) according to claim 35, characterized in that the bristle element (12) is a bristle bundle of a facial or health brush. 41. carrier (10) according to claim 35, characterized in that the bristle element (12) is a bristle bundle of a brush, in particular a nail polish brush. 42. carrier (10) according to one of claims 35 to 41, characterized in that it comprises at least one lateral pressing region, starting from which the material of the carrier (10) has been laterally deformed so that the cross section of the anchoring opening (22) is reduced ,