Classifications

• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D3/00—Preparing, i.e. Manufacturing brush bodies
  • A46D3/04—Machines for inserting or fixing bristles in bodies
  • A46D3/042—Machines for inserting or fixing bristles in bodies for fixing bristles using an anchor or staple
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
  • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
  • A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone

Definitions

• the invention relates to a method for producing a brush or a brush, in particular a paint brush such as a nail polish brush, by anchor-free fastening at least one bristle bundle to a support portion of the brush or the brush.
• the invention relates to a device for producing a brush or a brush, is fixed by the at least one bristle bundle anchor-free on the brush or on the brush.
• Anchors are either metal plates or wire loops that lock folded bristle bundles to a support portion of the brush or brush and cut into the edge of the corresponding opening.
• the support portion of the brush or the brush is that or that part of the brush body or brush body to which the at least one bundle of bristles is attached.
• the support portion is an integral part of the brush body or brush body.
• Another variant provides to carry out the brush body or brush body in several parts, so that a kind of plate or tube is first made, on or in or the then or the bristle bundles are attached. Subsequently, this separate part is connected to the rest of the brush body.
• the remainder of the brush or brush body can already be made and also form a separate part, which is then connected to the bristled part, for example by gluing.
• the bristled part can also be encapsulated, whereby the rest of the brush body is subsequently produced.
• a bristle bundle anchor-free on the support section There are various ways to attach a bristle bundle anchor-free on the support section.
• the bundle of bristles will pass through the openings in the corresponding support portion Part stuck.
• the bristle ends are connected to each other at the back, for example by thermal forming, ie melting. Subsequently, this section of the brush is covered on the back, by means of a cover or by means of an encapsulation.
• Another way of fastening without anchor is to arrange the bristle or bundles in a spray tool insert and to coat the bundle or the back of the bundle at the rear end of the bristles.
• the bristle bundles are removed from a magazine in which the bristles are adjacent and are housed under lateral bias.
• a so-called bundle taker removes a few bundles from this magazine.
• the present invention provides a method of manufacturing a brush or a brush and an apparatus for making a brush or a brush, in which the bristle supply is simplified.
• the method according to the invention provides that the at least one bundle of bristles is fastened to the holding section without the use of anchors and that at least one bundle of bristles to be fastened in the brush or brush is produced by the following steps: a) Provision of a bundle carrier which has a front and an opposite one Back and at least one the front and the
• the bristles which have already been cut to length are not taken from a magazine, but are removed from at least one endless coil immediately before the brush or brush is produced, and only in the Bundle carrier cut off. That is, this cutting of the bristles takes place in the device for producing the brush itself.
• the fibers are of course preferably arranged in parallel in the coil and not, as in a rope, twisted together.
• strands can be withdrawn from several coils simultaneously and combined to form a common strand. This common strand is then inserted into the opening of the bundle carrier and then cut off.
• strands can also be withdrawn simultaneously from a plurality of coils and pushed into a plurality of openings of the bundle carrier and then cut off for faster stuffing.
• several coils can be combined into one strand.
• the strands may be different, d. H. for example, in color or cross-section have different fibers. Theoretically, it is also possible to wind different fibers on a spool.
• the bristle bundle may be supported on or in the support portion such that it seen in side view of the bristles or seen in plan view of the bristles has a curved front-side bundle end.
• the order of the paint is improved.
• the unwinding of the strand from the spool may be effected by at least one roller acting on the withdrawn portion of the strand.
• This role is driven, of course, if necessary, a non-driven or driven counter-roller may be present so that between the rollers of the strand is clamped. It is also possible to use several separate reels for multiple reels to simultaneously handle strands. Alternatively, the multiple strands of multiple coils may be unwound by a driven roller. This roller has separate sections, for example by providing intermediate plates which form rollers between them. Each role can then be assigned to a thread.
• the roller or rollers may have a profiled lateral surface which acts on the strand and which changes the cross-sectional shape of the strand and thus the position of the fibers on the output side. This means that an intermediate stage for the final cross-sectional shape of the bristle bundle or the final cross-sectional shape of the bristle bundle can already be formed via the profiled jacket surface.
• the strand or strands need not already have the final position in the bundle carrier before cutting. Rather, it is possible to move the bristle bundle after cutting further into the bundle carrier in the direction of the front, for example via a kind of stamp or a kind of moving plate.
• the bundle carrier can be an intermediate magazine reused in a device for producing the brush or the brush, ie a type of cassette.
• This intermediate magazine which is equipped with one or more bristle bundles, is then moved further in the device.
• the cut bristle bundle (s), for example, are pushed into the holding section of the subsequent brush body or brush body and then fastened to the holding section.
• the support portion is, for example, a prefabricated part provided with at least one opening, to which the bundle or bundles are fastened and which is subsequently connected to the rest of the brush body or brush body, for example by gluing to a handle or stem or by injection molding Formation of a handle or stem or the like.
• the intermediate magazine may be an injection mold insert for the production of at least the portion of the brush or brush body forming the support portion, or the bundle or bundles are or will be pushed into a corresponding injection mold insert from the intermediate magazine.
• the bristle ends are connected to each other, for. B. by melting.
• the bundle of bristles or bristle bundles is overmoulded on the back to form either the entire brush or brush body or only a portion thereof before the remainder is molded or secured thereto.
• the bundle carrier is already the holding section of the brush or of the brush itself.
• the support portion is thus, as already explained, part of the later brush or brush body.
• the support portion itself can pass over in one piece into the rest of the brush or brush body and form a portion thereof. This is the case, for example, if in a toothbrush the entire brush body together with head, neck and stem is prepared in advance and then stuffed and possibly only on the back side in the head area is molded.
• the support portion may be a previously manufactured component, for example, a plate provided with one or more openings or a sleeve in a paint brush. This padded component then becomes part of the later brush or brush body by subsequently bonding it to the remainder of the brush or brush body, for example by overmolding or by attaching to another prefabricated part of the body, e.g. the handle.
• the bristle material may be introduced into the bundle carrier as far as it comes from the spool so that it already protrudes from the front side.
• the back-protruding bristle ends may be attached to the support portion thereafter.
• One type of attachment is that the rearwardly projecting bristle ends are fused back to each other after passing through the support portion. In this case, this is not absolutely necessary, the material of the support portion are merged with. However, since the materials of bristles and support portion may also be different, it is also optionally possible that only the bristle ends are fused together back to form a homogeneous portion and are secured against being pulled forward.
• a handle as previously briefly indicated. This handle can be coupled for example via a latching connection with the bundle carrier.
• the brush body (intermediate magazine or plate as part of the complete brush body or brush body itself) has several openings, they can by one or more coils with then later separated bristle bundles are fitted.
• the spool / spool or brush body is moved in two directions to achieve relative movement of these parts. So z. B. with a coil one hole after the other stuffed and after insertion of the strand of this is cut off.
• Coils may also be switched on or off during a process of plugging a brush body having multiple openings when its strand is no longer needed. Furthermore, strands can be successively inserted into the same opening in the insertion device, so that they successively positions different strands.
• strands can also be combined when large tufts need to be created in the brush.
• the invention also relates to a device for producing a brush or a brush, in particular for carrying out the aforementioned method according to the invention.
• the inventive The device has a bundle carrier to be equipped with at least one bundle of bristles, which has a front and an opposite rear side and at least one through opening connecting the front and the back, wherein the device comprises at least one coil on the one by a plurality of juxtaposed continuous fibers a stranding device that rolls the strand of at least one bobbin and introduces into the opening in the bundle carrier, a cutting device that separates a bundle of bristles from the strand after insertion of the end of the strand into the channel, and a fastening device for securing the strand Bristle bundle on a support portion of the brush or the brush, in particular a fastening device in the form of a melting device.
• the feeder may have at least one roll engaging the drawn portion of the strand to strip the strand.
• multiple separate reels may be present.
• sections separated from one another on a roller can also form the rollers.
• Each roll is assigned to a strand of a coil.
• a profiled lateral surface on the roller or rollers may be present in order to change the cross-sectional profile of the strand on the output side.
• an insertion device with at least one insertion channel may be present.
• this insertion channel the end of the strand is first inserted and then threaded through.
• the insertion channel end on the opposite side should face the rear mouth of the opening on the bundle carrier, and the bundle carrier and insertion device may be minimally spaced apart. It can be by means of the introducer also align multiple strands of multiple coils or unite with each other. The strands of these multiple coils extend through the introducer and / or multiple strands in the introducer combine on the output side into a strand.
• the opening or, depending on whether an insertion device is provided the insertion device has different cross sections at the input-side mouth of the opening or of the insertion channel compared to the output side.
• the channel or can narrow the opening funnel-shaped, or it can be provided on the input side a plurality of sub-channels, which then combine on the output side to a common channel.
• Another possibility is, on the input side, for example, similar to a cloverleaf several subsections, which are partially separated from each other to form, whereas the outlet or the channel on the output side then has a completely different cross-sectional shape.
• the insertion channel or opening on the back may have a different cross-section at the mouth than on the front to facilitate threading the strand (s) and / or to change the cross-section of the strand (s).
• the insertion channel or the opening can taper from the rear side to the front side opening and / or the front side and the rear side opening have different cross-sectional shapes.
• cross-sectional shapes it is to be understood that the shape itself is different, that is to say not just a change, for example, from a small circle to a larger circle, or from a small rectangle to a larger rectangle, but the insertion channel or
• other cross-section includes both changes in cross-sectional shape and changes in cross-sectional area, that is, from a small rectangle to a larger one Rectangle.
• the device according to the invention may also have a plurality of coils on which strands are rolled up and which are brought together to form a common strand or which are introduced into separate openings in bundle carriers.
• an alignment tool may be provided to adjust the geometry of the bristle bundle in the later brush or in the later brush.
• this alignment tool determines the shape of the at least one bristle bundle, wherein the alignment tool is arranged on the front side of the support portion.
• this alignment tool may be provided with channels or openings that are oblique and / or have a certain cross-sectional shape (arcuate, rectangular or the like).
• the bristle or bundles or are inserted into the one or more channels or openings, thus retain a certain shape, and only then the bristles are attached to the support portion, for example by being fused together or overmolded with each other. This list is not exhaustive.
• the bundle carrier may be an intermediate magazine reused in the device, which is fitted with the at least one cut bristle bundle and from which the at least one bundle of bristles is pushed into the holding section and then attached to the mounting section.
• the intermediate magazine can form a spray tool insert, or from the intermediate magazine is or are the bristle bundles pushed further into a spray tool insert, and then finally encapsulated.
• the alternative embodiment provides that the bundle support is the support portion of the brush or the brush itself, that is part of the later brush or the brush.
• the apparatus may be configured such that the feeding device pushes the severed bundle of bristles farther into the holding section so that the bristle bundle and previously the strand or strands are not already in their final position before being cut off. It should be emphasized that the aforementioned features of the method are also features of the device and vice versa.
• the invention relates to a nail polish brush having a tubular bundle carrier forming part of the brush and having a front and a back connected by a single through opening.
• the cross section of the front opening of the opening is different than the cross section of the rear opening of the opening. In side view of the bristle bundle or in plan view of the end of the bristle bundle this is arc-shaped.
• the opening in the tubular bundle carrier can taper from the rear to the front mouth and / or have different cross-sectional shapes.
• the shape of the front opening or the opening is, for example, oval or arcuate in cross section.
• FIG. 1 shows a paint brush according to the invention produced by the method according to the invention and the device according to the invention, in particular nail varnish brush in disassembled state,
• FIG. 2 shows the brush according to FIG. 1 in the assembled state
• FIG. 3 shows a perspective view of the brush according to FIG. 2 from below
• FIG. 4 shows a schematic representation of a part of the device according to the invention according to an embodiment
• FIG. 4 a shows alternative rollers for the device according to FIG. 4,
• FIG. 5 shows a variant of the device according to FIG. 4
• FIG. 6 shows a schematic view of a part of the device according to the invention obliquely from below according to a further embodiment
• FIG. 7 shows a tip of a paint brush according to the invention produced according to the invention
• FIG. 8 shows a variant of the tip of the nail varnish brush according to the invention according to FIG. 7,
• FIG. 9 shows a schematic view of a part of a variant of the device according to the invention for producing a brush, which carries out the method according to the invention according to an embodiment
• FIG. 10 shows a cross-sectional view through a part of another device according to the invention in the region of the brush body, FIG.
• FIG. 11 is a plan view of a brush body usable in the method according to the invention of the device according to the invention.
• FIG. 12 shows a cross-sectional view through a brush body after fusing the rear-side bristle ends
• FIG. 13 shows a brush head of a toothbrush produced by the method according to the invention and by the device according to the invention
• FIG. 14 shows an injection mold insert which can be used in the device according to the invention.
• FIG. 15 shows a two-part injection molding tool which can be used in the device according to the invention and in the method according to the invention.
• FIGS. 1 to 3 show a paint brush, in particular a nail varnish brush, which has a two-part brush body 10 with a handle 12 and a bundle carrier 14 produced separately therefrom, wherein the bundle carrier is a tubular or tubular plastic part.
• a bristle bundle 16 is attached.
• the bundle carrier 14 can be connected via a latching connection with the handle 12, wherein additionally also for further securing, for. B. an adhesive bond can be provided or a welded joint, which is not necessarily the case.
• the bundle of bristles 16 has a special cross-sectional shape, as seen in FIG. 3 with a view to the free end of the bristle bundle 16. Namely, the bristle bundle 16 has an arcuate cross-sectional shape in order to improve paint application.
• a corresponding arcuate opening 18 in the bundle carrier 14 is provided.
• the tubular bundle carrier 14 has a through opening 18, through which, as will be explained later, the bundle of bristles 16 is pushed through and fastened there on the back side.
• At least the mouth 20 of the opening 18 (see Figure 3) on the front side 22 of the bundle carrier 14 is arcuate in order to determine the profile of the bristle bundle 16.
• the rear opening of the opening 18, which can be seen in Figure 1, may be arcuate or have a different cross-section than the front-side opening 20. In Figure 1, the rear mouth is oval.
• Profile of the bristle bundle 16 illustrated at its free end Namely, it is alternatively or additionally possible to form the bundle of bristles 16 so that in side view, the bristle bundle is arcuate, ie the central bristles are further from the bundle support 14 than the lateral.
• the opening 18 in the bundle carrier 14 may be different from the cross section, as far as the front and the rear mouth are concerned.
• the opening 18 may be z.
• B. rejuvenate and / or different Have cross-sectional shapes, as, for example only, the oval back opening according to Figure 1 and an arcuate mouth on the front side of Figure 3, but also all other geometries are possible.
• U. on the desired profile of the bristle bundle 16.
• Figure 4 is shown schematically how the device for the preparation of
• the bristles are not taken from a magazine in which the bristles are already cut to length, but rather endless coils 24 to 28 are used for the production, on which strands 30 to 34 of juxtaposed fibers are rolled up. The fibers then later form the individual bristles. This will be explained later in more detail.
• the individual strands 30 to 34 are different in terms of color, number of fibers and / or diameter of the fibers.
• the fibers of the strand 30 may be black and have a diameter of 0.1 mm, while the fibers of the strand 32 are red and have a diameter of 0.05 mm, and the fibers of the strand 34 may again be black with a diameter of 0.1 mm.
• These strands 30 to 34 are unrolled from the bobbins 24 to 28, for example by rollers 36 to 38 (and usually also corresponding counter-rollers, which are not shown here for simplicity) engage the respective strand 30 to 34 and roll it.
• the device for producing the brush between the rollers 36 to 40 and the bundle carrier 14 has an insertion device 42, which is shown in simplified form and in which the strands 30 to 34 too a common strand 44 are united.
• the insertion device has an insertion channel 46 which has a rear (in Figure 4 to be seen) mouth and an existing on the front opposite mouth.
• the mouths have different cross sections.
• the rear mouth is provided with a larger cross-section than the front-side mouth.
• other cross-sectional shapes can be realized on the back and front side.
• each strand 30 to 34 can be threaded and within the introducer 42, these strands 30 to 34, when they reach the common channel section, merged.
• This has the advantage that the position of the strands 30 to 34 is kept stable for a very long time in order to ensure the always identical alignment and positioning of the individual fibers of the strands 30 to 34 within the common strand 44.
• a variant of the rollers 36 to 40 can be seen in Figure 4a, because here is a
• Roller 48 which is driven, is divided into segments by disc-like intermediate walls 50 which define rollers 36-40.
• a common drive may be used, and in addition, the strands 30-34 are stably positioned before entering the introducer 42. After the insertion device 42, the common strand 44 extends back into the bundle carrier 14 and is pushed therethrough to the front, so that the front end of the strand 44 projects from the bundle carrier 14.
• the strand 14 is separated from the back of the bundle carrier 14 by a cutting device 52, so that the bristle bundle 16 results.
• the bristle bundle 16 is transported further within the device and pushed deeper into the bundle carrier 14 by a plunger 54, which is part of the feeding device, until the front end of the bristle bundle 16 bears against a stop 56.
• the individual back bristle ends can then be fused together by a hot stamp or simply a temperature supply so that they form a kind of layer or lump within the bundle carrier 14.
• the stop 56 may, as shown in Figure 4, be profiled to the shape of the
• the stop is then part of a so-called alignment tool for the bristle bundle 16.
• the alignment tool may alternatively be designed as a plate-shaped body with openings, wherein the opening cross section and the orientation of the opening determines the orientation of the bristle bundle 16 and its cross section.
• the alignment tool can be z. B. similar to the alignment tool 58 may be performed in Figure 10, in which the opening 60 is obliquely and has an elongated contour in cross-section. However, this is only an example.
• a strand 30 is unwound only from a coil 24, otherwise the device is as shown in Figure 4 and also works accordingly, so that reference can be made. Accordingly, only one roller 36 and its counter-roller 36 'are necessary.
• FIG. 6 shows that the rollers 36, 36 'can be profiled on their lateral surfaces, for example by a roller being convex in cross section and a roller concave on its lateral surface.
• the strand 30 is correspondingly profiled in the direction of movement downstream of the rollers 36, 36 'so as to be easier to insert into the corresponding opening in the bundle carrier 14.
• the profile of the strand 30 after the rollers 36, 36 'need not be the final profile of the later bundle of bristles 16, but may take an intermediate shape which is closer to the later shape than the cross section of the strand 30 in front of the rollers 36, 36'.
• FIGS. 7 and 8 show different variants of the individual different bristles which are realized in the brush.
• FIG. 7 shows the outer bristles of the entire bundle of bristles 16 possibly thinner bristles or differently colored than the central bristles coming from the strand 32.
• the individual sub-beams are arranged more often alternately.
• a fastening device 62 is symbolically for securing the
• the fastening device 62 is here embodied as a hot stamp, which is pressed into the opening 18 from the back, so that a kind of lump 64 results from molten bristle ends, i. H. All bundles are connected to each other and thus secured against withdrawal from the bundle carrier forward.
• the feeding device formed by the rollers 36 to 40 can also be designed differently.
• the strand (s) may preferably be introduced into the bristle carrier perpendicular to its backside.
• the bundle carrier 14 forms the holding section of the brush body and is a separate, previously manufactured component
• the entire brush body or brush body is a prefabricated part into which the bundles be inserted.
• the support portion is the portion of the brush body in the region of the bundles.
• a toothbrush is tufted, which, as in all embodiments, has anchor-free bundles of bristles 16 attached to it.
• the brush body 66 has a stem, neck and a head 68 with several provided openings 18.
• the head 68 here forms the support portion for the bristle bundles 16. Again, the back is stuffed.
• the bundle carrier in this embodiment is a so-called intermediate magazine 70 reused in the device into which strands 24 to 28 are inserted into the magazine 70 after insertion of the coil or packages be cut into bundles.
• the intermediate magazine 70 may have one or more openings 72.
• the intermediate magazine 70 has the same hole pattern as the hole pattern of the support portion, which simultaneously forms the brush body here.
• the intermediate magazine 70 is completely equipped with bundles 16.
• one or more of coils 24 to 28 may be introduced simultaneously or successively into different or identical openings in the intermediate magazine strands. This is all variable.
• the intermediate magazine 70 is moved to the head 68, or vice versa, and individually or together then the bristle bundles 16 from the intermediate magazine in the opposite openings in the head 68 z. B. via corresponding plunger 54, which are part of the feeder inserted.
• the brush body (intermediate magazine or plate itself as part of the complete brush body or brush body itself) has several openings, as in FIG. 9, these can be equipped by one or more coils with bundles of bristles which are then separated later.
• the spool / spool or brush body is moved in two directions to achieve relative movement of these parts. So z. B. with one coil after the other is padded and after the insertion of the strand this is cut off.
• Coils may also be switched on or off during a process of plugging a brush body having multiple openings when its strand is no longer needed. Furthermore, strands can be successively inserted into the same opening in the insertion device, so that they successively positions different strands.
• strands can also be combined when large tufts need to be created in the brush.
• the alignment tool 58 Adjacent to or slightly spaced from the front of the support portion is the alignment tool 58, with corresponding channels or openings 74 into which the bristle bundles 16 protrude.
• the cross-sectional shape and orientation of the apertures 74 may then again define the orientation or profile of the bundles of bristles 16 in the support portion.
• a u. U. profiled stop 56 may be present on the front side.
• FIG. 10 shows, by way of example, how the alignment tool 58 defines the shape of the bristle bundle 16 pushed in later.
• a bristle bundle is to be introduced into the head 68, which on the one hand is inclined and on the other hand has an elongated shape.
• two bundles of bristles are united within the holding section, here the head 68, so that the holding portion at the same time forms the insertion device, as has been explained for example in connection with Figure 4.
• the head 68 has an opening 18 which has a single orifice with a specific cross-section at the front (bottom in Figure 10). On the rear side, however, the opening diverges into two partial openings 76, 78, which are separated from one another by an intermediate web 80. The opening 18 thus opens into two smaller partial openings 76, 78 with another cross-section.
• Each partial opening 76, 78 or each corresponding mouth is intended for a strand, is threaded directly into the. Subsequently, the strands are then cut back, as will be explained with reference to the previous figures.
• An insertion bevel 82 serves to deflect the common bundle of bristles into the inclined opening 60.
• the apparatus shown in Figure 10 can not insert the strands directly into the support portion, here the head 68, but rather in an intermediate magazine, as shown in Figure 9, bristle bundles are cut to length, which are then stuffed into the support portion and attached to the support portion.
• bristle bundles or strands can be inserted into insertion channels or openings which have a different opening cross section than the front side in order to facilitate the insertion from the back side and on the other hand for to provide a profiling of the bristle bundle on the front or at least to support the profiling.
• a variant of cross sections at the mouths front side and rear side is illustrated with reference to Figure 1 1 at a head 68 of a toothbrush, wherein corresponding variants can also be used in a bundle carrier 70 such as an intermediate magazine or at an insertion device 42.
• a bundle carrier 70 such as an intermediate magazine or at an insertion device 42.
• FIG. 12 shows symbolically how one or more bristle bundles 16 can be anchored in the bundle carrier 14.
• the lump 64 resulting from the melting of the bristle ends is partially in the corresponding opening in the bundle carrier 14.
• the molten material can also form a layer on the back side.
• Figure 12 also shows at its right end that the mouths of the opening 18 front and back have a different cross section, here the opening 18 tapers from the back to the front.
• the surface centers 84, 86 of the mouth cross-sections are frontally and rearwardly laterally offset from each other, as shown by the axis lines.
• Corresponding shapes can of course also have the insertion channel 46 or the corresponding openings in the intermediate magazine.
• FIG. 13 it can be seen what different cross sections, orientations and geometries the individual bristle bundles 16 can have. This illustration is not exhaustive and, above all, it is not limited to the illustrated toothbrush head. Rather, such or similar bristle bundles can also be used with brushes or other brushes.
• FIG. 14 shows a bundle carrier which can optionally also be designed as an intermediate magazine and which is an injection-molding tool insert 90.
• openings 18 are formed, in which the strands of the rollers can be inserted either directly, with or without introducer 42. Alternatively, the already cut bundles of bristles via an intermediate magazine, as shown in Figure 9, fed and then be pushed into the openings 18.
• the injection mold insert 90 finally has rearwardly projecting bristle bundles, which are then connected on the back, for example by melting.
• the stocked injection mold insert 90 is then inserted into an injection mold half 92, see FIG. 15, in which, in the illustrated, non-limiting example, also partial cavities 94 for the handle of the brush are executed.
• a corresponding upper mold half 96 may also have partial cavities.
• the back ends of the bristle bundle are overmolded to form the brush body, which forms a support portion in the region of the bundles.
• the bristle bundles 16 but also on a separate, previously manufactured component, namely a plate-like bundle carrier 14 are fixed, which is then inserted into the corresponding cavity 98 in the injection mold insert 90 and then encapsulated body to form the remaining part of the brush.

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• 2014
  • 2014-12-23 BE BE2014/5156A patent/BE1022487B1/de active
• 2015
  • 2015-12-14 WO PCT/EP2015/079539 patent/WO2016102221A1/de active Application Filing
  • 2015-12-14 EP EP15808611.6A patent/EP3236806A1/de active Pending
  • 2015-12-23 TW TW104143442A patent/TWI675632B/zh active

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