Coated abrasive tool, method for manufacturing the tool and abrasive dental product

Abstract

A coated grinding tool (10) comprises: a carrier (12) having a carrier material; and an abrasive surface coating (14) on a surface region (12-A) of the carrier (12), wherein the abrasive surface coating (14) comprises abrasive functional particles (16) and a thermoplastic adhesive (18) for firmly adhering at least a portion of the abrasive functional particles (16) to the carrier material, wherein at least a portion of the abrasive functional particles (16) are partially embedded in the carrier material and connected to the carrier material on the surface region (12-A) of the carrier (12), and wherein at least a portion of the abrasive functional particles (16) are also partially embedded in the thermoplastic adhesive (18) on the surface region (12-A) of the carrier (12), and wherein the thermoplastic adhesive (18) is connected to the abrasive functional particles (16) and the carrier material.

Description

Technical Field

[0001] Embodiments of the present invention relate to a coated abrasive tool, a method for manufacturing the tool, and also to an abrasive dental product. Embodiments of the present invention relate in particular to a coated abrasive tool in the form of a grinding tool, a polishing tool and / or a cleaning tool, and to its manufacture and its use in the dental field as a dental cleaning product and / or abrasive product. Background Art

[0002] Hard material particles are generally referred to as abrasives or grinding materials, which are used for grinding, i.e. to remove material by cutting with bonded particles. In this context, a distinction can be made between natural and synthetic granular materials. Abrasives applied to a carrier material are also referred to as pad abrasives, wherein the abrasive is then located on the surface of the carrier material. Furthermore, abrasives can also be formed as grinding bodies. Grinding bodies include, for example, cutting wheels, rough grinding wheels, diamond grinding wheels, etc.

[0003] With the abrasive pads or grinding bodies described, when they are used, the abrasive coating is worn away from the top (= current surface of the grinding element) downwards, resulting in a continuous wear of the grinding element and thus a reduction in the grinding and / or cleaning effect of the element. Furthermore, the wear of the grinding element and thus the wear of the abrasive of the grinding element is directly related to the contact force of the grinding element on the workpiece to be machined. Summary of the invention

[0004] The object of the present invention is therefore to provide an improved coated grinding tool which has a high, reliable and defined grinding and / or cleaning effect at low wear, i.e. lower wear of the abrasive functional particles (hard particle grains) compared to conventional grinding parts.

[0005] The invention is also based on the object of providing an improved method for producing such a coated grinding tool.

[0006] This object is achieved by the independent claim comprising device claim 1 and method claim 12 .

[0007] Developments according to the invention are defined in the dependent claims.

[0008] According to one embodiment, a coated abrasive tool comprises a carrier having a carrier material and an abrasive surface coating on a surface region of the carrier, wherein the abrasive surface coating has abrasive functional particles and a thermoplastic adhesive for firmly adhering at least a portion of the abrasive functional particles to the carrier material, wherein at least a portion of the abrasive functional particles on the surface region of the carrier are partially embedded in the carrier material and connected to the carrier material, and wherein at least a portion of the abrasive functional particles on the surface region of the carrier are also embedded or partially embedded in the thermoplastic adhesive, wherein the thermoplastic adhesive is connected to the abrasive functional particles and the carrier material.

[0009] According to one embodiment, a method for producing a coated abrasive tool comprises the following steps: feeding a powder mixture into a hot or low-heat plasma spray device, which is directed toward a surface area of ​​a carrier to be coated, wherein the powder mixture has abrasive functional particles and a thermoplastic binder, wherein the powder mixture has the functional particles and the thermoplastic binder material as separate powder particles, or wherein the powder mixture has functional particles that are at least partially or completely coated with a thermoplastic binder, and wherein, in the hot or low-heat plasma spray device, a reduction in the viscosity of the binder is caused, and the functional particles together with the binder with the reduced viscosity are applied to the surface area of ​​the carrier, wherein the thermoplastic binder solidifies again when applied to the surface area of ​​the carrier, and an abrasive surface coating is formed on the carrier of the abrasive tool using the functional particles and the thermoplastic binder.

[0010] The core idea of ​​the present invention is now to provide a low-wear, coated grinding tool, such as a grinding tool, a polishing tool, a cleaning body or a coated brush, wherein the grinding functional particles, i.e., abrasives or grinding materials, are firmly adhered to and connected to a carrier material or a matrix. For this purpose, on the one hand, the grinding functional particles are partially or at least partially embedded or anchored in the carrier material, wherein a thermoplastic adhesive or a polymer is also applied to the surface area of ​​the carrier and the grinding functional particles, so that the grinding functional particles on the surface area are also embedded or partially embedded in the thermoplastic adhesive, i.e., the thermoplastic adhesive is connected to the grinding functional particles and the carrier material in a material-matching and / or shape-matching manner. Therefore, reliable firmly adhered fixing of the grinding functional particles on the carrier can be achieved so as to obtain a wear-resistant grinding surface coating of the grinding tool. Therefore, the thermoplastic adhesive (also referred to as: thermoplastic binder) is also used as a protector or wear protector of the embedded grinding functional particles or grinding particles. Thus, due to the reduced wear of the grinding surface coating, it is possible to increase the service life of the coated grinding tool.

[0011] Thermoplastic adhesives can also reduce the adhesion of removed material to the coated grinding tool, so that removed material or grinding dust can be removed relatively easily from the grinding surface coating, for example by means of an air flow or suction. This reduces clogging of the tool, which leads to a higher service life.

[0012] Furthermore, due to the material properties of the thermoplastic adhesive, both the abrasive properties and also the sliding properties of the grinding surface coating can be adjusted to the workpiece to be machined or adapted to the material properties of the workpiece to be machined.

[0013] In this case, the grinding surface coating can be designed as a top coating (=side coating) and / or as an edge coating (=end face coating) of the grinding tool.

[0014] Here, the abrasive surface coating can be used for abrasive dental products, such as dental cleaning products or dental grinding products, because the material removal can be adjusted very precisely by the materials used for the carrier, the thermoplastic binder and the abrasive functional particles (grains). Thus, it is possible to produce and provide abrasive dental products which, on the one hand, only clean the surface of the workpiece to be processed, for example, by means of a toothbrush designed accordingly, and, on the other hand, achieve a smoothing or grinding effect on the workpiece to be processed, for example, on a dental ceramic crown, using a grinding head or grinding drill designed accordingly.

[0015] Furthermore, coated grinding tools, for example, can be produced very efficiently by means of the described production method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Preferred embodiments are explained in more detail below with reference to the accompanying drawings.

[0017] Figure 1a shows a schematic perspective view (=3D view) of a surface region of an abrasive tool which is coated, for example, over the entire surface, according to one embodiment;

[0018] Figure 1b shows a schematic cross-sectional view of a surface region of a coated abrasive tool according to one embodiment;

[0019] Figure 2 shows a schematic cross-sectional view of a surface region of a coated abrasive tool having an open-pored base or carrier material according to another embodiment;

[0020] Figure 3 A schematic block diagram of an apparatus or system for coating a tool with an abrasive surface coating according to another embodiment is shown;

[0021] Figure 4A schematic flow chart of a method for manufacturing a coated abrasive tool according to another embodiment is shown;

[0022] Figure 5a - b shows a schematic side view and a cross-sectional view of an abrasive dental product in the form of a toothbrush head according to another embodiment; and

[0023] Figure 6a -b shows a schematic side view and a cross-sectional view of an abrasive dental product in the form of a toothbrush head according to another embodiment. DETAILED DESCRIPTION

[0024] Before explaining the embodiments of the present concept in further detail below with reference to the accompanying drawings, it should be pointed out that the same, functionally identical or effected components, objects, function blocks and / or method steps are marked with the same figure numbers in different drawings, so that the descriptions of these components, objects, function blocks and / or method steps introduced in different embodiments can be interchangeable or applied to each other.

[0025] Various embodiments will now be described in more detail with reference to the accompanying drawings, in which some embodiments are shown. In the accompanying drawings, the sizes of components, layers and / or regions shown may not be drawn to scale for clarity.

[0026] In order to simplify the description of the different embodiments, the drawings have a Cartesian coordinate system x, y, z, wherein the xy plane corresponds to or is parallel to the main surface area of ​​the carrier or substrate, and wherein the vertical direction is perpendicular to the xy plane and corresponds to the depth direction through the grinding surface coating. In the following description, the term "lateral" refers to a direction in the xy plane (or parallel thereto), wherein the term "vertical" refers to a direction in the ±z direction (or parallel thereto).

[0027] It will now be referenced below Figure 1a -b describes a coated grinding tool 10 according to one embodiment. Here, Figure 1a A perspective view of a surface area 10-A of a coated abrasive tool 10 is shown, and Figure 1b The cross-sectional view shows an enlarged detail of a surface region 10 -A of a coated grinding tool 10 .

[0028] like Figure 1a -b, the coated grinding tool 10 has a carrier or substrate 12 and an abrasive surface coating 14 on a surface area 12-A of the carrier 12. Depending on the field of application of the grinding tool 10, the carrier 12 can, for example, have a rigid carrier material, or a flexible or elastic carrier material. Thus, the surface coating 14 is arranged, for example, on a surface area 12-A of the carrier 12, which surface area should function as an abrasive working surface of the coated grinding tool 10.

[0029] The grinding surface coating 14 has grinding functional particles 16 and a thermoplastic binder 18, for example a thermoplastic polymer material, for making a firmly adherent connection between at least a portion of the grinding functional particles 16 and the carrier 12. At least a portion of the grinding functional particles 16, for example at least 60%, 80%, 90% or 99%, is at least partially (partially or also completely) embedded or anchored in the carrier material on the surface area 12-A of the carrier 12, and is thus firmly adherently connected to the carrier material. Therefore, the partial embedding of the grinding functional particles 16 in the carrier 12 forms, for example, a shape-fitting connection. The embedded grinding functional particles 16 are also referred to as bonding particles 16. According to one embodiment, the grinding functional particles 16 are then only partially embedded in the carrier 12, and thus, for example, a shape-fitting connection is formed.

[0030] As schematically shown in the grinding surface area 14 Figure 1a As shown exemplarily in . The grinding surface coating can be designed in a distributed or "full-surface" manner according to one embodiment, that is, the intermediate spaces between the grinding functional particles 16 on the carrier 12 can be filled, for example, partially or completely with a thermoplastic adhesive 18, and optionally also filled with one or more other applied materials 18' (for example, an additive material 18' that improves sliding properties). Therefore, the coating can be arranged on the carrier 12 as a grinding surface coating 14, which is formed on the surface area 12-A in a full-surface or distributed manner (spaced apart) according to the (set) occupancy density or distribution density of the grinding functional particles 16, the thermoplastic adhesive 18 and the additive material 18'. The additive material 18' can also be combined or integrated into the thermoplastic adhesive 18. Thus, the grinding surface coating 14 can be formed as a continuous or surface-type or distributed single layer in combination with the grinding functional particles 16, the thermoplastic adhesive 18 and the optional additive material 18'. For example, the grinding functional particles (16) also protrude from the optional additive material 18'.

[0031] According to another embodiment, for example by means of Figure 1b As shown, the grinding surface coating 14 can also be applied to the carrier 12 in a "non-surface-covering" (incompletely covering) manner, so that some surface areas of the carrier material are exposed in a top view of the surface area 12-A of the carrier 12. Therefore, the area coverage of the grinding surface coating 14 on the carrier 12 can be, for example, in the range of 1% (5% or 10%) to 100%.

[0032] Thus, the abrasive functional particles 16 can be partially or completely covered or surrounded by the thermoplastic adhesive 18, wherein, by the amount of thermoplastic adhesive 18 applied and thereby by the partial or complete covering of the functional particles 16, the wear properties, abrasive properties, sliding properties and / or adhesion properties of the abrasive material can be adjusted or coordinated with the material of the workpiece to be processed, but this nevertheless still leads to bonding in the intermediate spaces of the functional particles 16.

[0033] At least a portion of the abrasive functional particles 16, for example at least 60%, 80%, 90% or 99%, is embedded in the thermoplastic binder 18 at the surface area 12-A of the carrier 12, wherein the thermoplastic binder 18 is connected to the abrasive functional particles 16 and the carrier material in a form-fitting and / or material-fitting manner. Therefore, the abrasive surface coating 14 in combination with the abrasive functional particles 16 and the thermoplastic binder 18 can also be formed as a non-surface-covering (incompletely covered or closed) single layer.

[0034] In the context of this specification, the material used to grind the functional particles is referred to as the grinding material, as long as the material is Figure 1a -b) has a friction or grinding effect, which in turn leads to a smoothing, cleaning or abrasive effect on the workpiece to be processed.

[0035] Furthermore, the abrasive action of the coated abrasive tool can be adjusted by the embedding depth of the abrasive functional particles 16 in the carrier material, by the carrier material and / or by the material of the thermoplastic binder 18. In this case, the elasticity of the carrier material and the elasticity of the thermoplastic binder 18 can be adjusted and / or coordinated with one another. Within the scope of this description, a material is referred to as elastic if a substance or material changes its shape under the action of a force and can return to its original shape within linear elastic properties when the force is removed.

[0036] Thus, for example, the material properties of the thermoplastic adhesive 18 and other optionally applied additional materials as dry lubricants, such as PTFE (polytetrafluoroethylene), graphite, ceramics and molybdenum sulfide (MoS2), can be adjusted to the coated grinding tool 10 on the workpiece (on the Figure 1a -b) the sliding characteristics produced on the surface to be processed.

[0037] In the context of this description, plastic materials that can be deformed "thermoplastically" within a certain temperature range are referred to as thermoplastics (thermoplastics or plastomers). This process is reversible, i.e. it can harden again by cooling. As long as the thermoplastic material is not overheated (= so-called "thermal decomposition"), the properties of the thermoplastic material remain unchanged or the same before and after heating, i.e. before and after application to the coated grinding tool 10, because the molecular chains of the thermoplastic material are not destroyed or broken. This is particularly true for the use of Figure 3 and Figure 4 The manufacturing method shown is an important characteristic of the thermoplastic adhesive 18 .

[0038] In one embodiment, an additional material 18' can also be applied as a surface covering material to the existing grinding surface coating 14 in order to adjust the resulting sliding properties of the coated grinding tool 10. In the manufacturing method 300 described below, the additional material 18' can be applied to the surface area 12-A of the carrier 12 provided with the grinding functional particles 16 simultaneously with the thermoplastic adhesive 18 or after the thermoplastic adhesive 18. Therefore, one or more additional materials can also be integrated or introduced into the thermoplastic adhesive 18 in order to adjust the properties of the grinding surface coating 14. For example, when using dry lubricating materials such as PTFE, graphite, ceramics and molybdenum sulfide (MoS2), reduced friction between the grinding tool 10 and the workpiece to be processed can be obtained.

[0039] The carrier material of the carrier 12 can, for example, be a combination of different materials, such as a carrier 12 having a PUR carrier layer and an SBR covering layer, wherein abrasive functional particles 16 (e.g. diamond) together with a thermoplastic adhesive 18 (e.g. POM) and optional additional material 18' (e.g. lubricant (PTFE)) are arranged on the carrier 12.

[0040] According to one embodiment, the abrasive functional particles 18 have a mean or average diameter d1, for example, between 100 nm and 2 mm. At least a portion of the abrasive functional particles 18 of the abrasive surface coating 14, for example at least 80%, 90% or 99%, are embedded in the carrier material with an average (medium) embedding depth d2, wherein the embedding depth d2 is equal to at least 5% (or 10%) and, for example, up to 95% (99%) of the average diameter d1 of the abrasive functional particles 18. Thus, the abrasive functional particles 16 are at least partially or completely embedded or anchored in the carrier material on the surface area 12-A of the carrier 12, and are thus firmly adherently connected to the carrier 12, i.e., for example, connected in a form-fitting manner.

[0041] In order to achieve a sufficient cleaning, grinding and / or abrasive effect of the grinding surface coating 14, it is sufficient if only a small portion of the grinding functional particles, for example about 1% to 5% of the average diameter d1, is exposed or exposed and protrudes from the carrier material and / or the thermoplastic binder.

[0042] Thus, during the stripping process, grinding process or abrasive process, the highest pressing force is applied to the surface to be machined of the workpiece by the abrasive functional particles 16 protruding at least slightly from the abrasive surface coating 14, wherein the abrasive functional particles 16 are (relatively) elastically fixed in the thermoplastic binder 18 and / or the elastic material of the carrier 12, and the abrasive tool 10 can follow the contour of the workpiece to be machined. Thus, with extremely low wear of the abrasive tool 10, extremely efficient surface machining of the workpiece surface can be achieved.

[0043] Arranging the abrasive functional particles as a single layer in the abrasive surface coating 14 ensures that a very large number of abrasive functional particles 16 simultaneously touch or act on the workpiece to be processed during the processing, so that the cleaning process, grinding process and / or abrasive process can be carried out extremely efficiently.

[0044] The combination of embedding the abrasive functional particles in the carrier material and embedding the abrasive functional particles in the thermoplastic binder results in an extremely firmly adherent connection or anchoring of the abrasive functional particles 16 on the carrier 12 .

[0045] Depending on the materials used for the carrier material, the abrasive functional particles 16 and the thermoplastic adhesive 18, the material-fitting and / or form-fitting connection of these components becomes a firmly adhered connection or anchoring of the abrasive functional particles 16 on the carrier 12. In the case of "inert" abrasive functional particles 16, a form-fitting connection between the abrasive functional particles 16 and the carrier material of the carrier 12 is essentially achieved by partially embedding the abrasive functional particles 16 in the carrier material, wherein a form-fitting connection of the "inert" abrasive functional particles 16 to the thermoplastic adhesive 18 also exists accordingly. Depending on the material, it is also possible to achieve a material-fitting connection of the thermoplastic adhesive 18 to the carrier material of the carrier 12 (e.g. an adhesive connection) and / or a form-fitting connection (=joining to one another) of the applied thermoplastic adhesive 18 to the carrier material of the carrier 12 (e.g. an open-pored carrier material).

[0046] According to one embodiment, it is also possible that, in the case of a non-inert material of the abrasive functional particles 18 , these functional particles are also connected in a materially bonded manner to the thermoplastic binder 18 and / or to the carrier material of the carrier 12 .

[0047] According to one embodiment, at least 60%, 80% or 90% of the area of ​​the grinding surface coating 14 is covered by a single layer of grinding functional particles 16 on the surface area 12-A of the carrier 12, i.e., covered in a single layer or in one plane. Thus, the applied and embedded grinding functional particles 16 together with the thermoplastic binder 18 form the grinding surface coating 14, wherein the grinding functional particles 16 are arranged in a single layer or in two dimensions (xy plane).

[0048] According to one embodiment, the deposited thermoplastic adhesive 18 has an average thickness d4 , wherein the average thickness d4 of the deposited thermoplastic adhesive 18 is smaller than an average diameter d1 of the abrasive functional particles 16 , such that the abrasive functional particles 16 partially protrude from the thermoplastic adhesive 18 .

[0049] like Figure 1b As shown, most of the grinding functional particles 16 are arranged side by side on the surface area 12-A of the carrier. However, a small number of the applied grinding functional particles 16 can also be arranged "on top of each other" or "aggregated into blocks" on the surface area 12-A of the carrier (see Figure 1b - far right), wherein, however, this situation can be largely avoided by the production method 300 described below. Since the abrasive functional particles 16 are designed as a grinding surface coating 14, for example as a single layer (on a carrier material) in combination with a thermoplastic binder 18, an extremely dimensionally stable grinding tool 10 can be realized, which, in addition, has extremely good sliding properties on the workpiece to be machined, i.e. the grinding tool 10 can be guided on the surface to be machined of the workpiece with relatively little force expenditure.

[0050] According to one embodiment, the abrasive functional particles 16 on the surface area 12-A of the carrier 12 may have an occupation density A (=distribution of the abrasive functional particles 16 on the surface area 12-A), wherein A=0.1%-100%, or A=0.1%-10% or A=1%-5%, i.e., the abrasive functional particles 16 are distributed or arranged on the entire surface of the processed surface area of ​​the component. The thermoplastic adhesive 18 may then cover the generated intermediate space of the surface area 12-A of the carrier 12 with an occupation density B, wherein B=100%-A, B≥90%-A or B≥80%-A, i.e., completely (B=100%) or partially (B≥90% or B≥80%).

[0051] The abrasive effect can now also be adjusted in a targeted manner by selecting the occupancy density or distribution density A of the abrasive functional particles 16 on the surface area 12-A of the carrier 12. Thus, for example, an increased occupancy density A of the abrasive functional particles 16 can contribute to increasing the abrasive effect of the grinding tool 10.

[0052] According to one embodiment, the surface area 12-A of the carrier 12 may be designed to be (relatively) smooth or flat (e.g. Figure 1a - as exemplarily shown in b).

[0053] According to another embodiment, the surface area 12-A of the carrier 12 can be formed and, for example, have a protrusion, a pyramid, a truncated pyramid, a cone, a truncated cone or a waveform in cross section. By selecting the shape or topology of the surface area 12-A of the carrier 12, the abrasive effect can also be adjusted in a targeted manner.

[0054] According to a further embodiment, the surface region 12 -A of the carrier 12 provided with the abrasive surface coating 14 can also have a groove structure or a structure with helically arranged depressions or elevations of the surface region (=helical structure).

[0055] Since the grinding functional particles 16 are designed as a single layer in combination with the thermoplastic binder 18, the grinding surface coating 14 can follow the surface contour of such a shaped carrier 12 extremely accurately, that is, after the grinding surface coating 14 is applied to the surface area 12-A, the relatively fine and detailed contour of the carrier 12 is also retained. Thus, for example, a so-called "grinding pad" (grinding pillow) can be provided by the coated grinding tool 10, which can be adjusted to a specific grinding angle based on the topological structure of the carrier 12, such as for grinding the tooth surface of a gear, etc. Due to the elastic carrier material, such a grinding pad 10 can also follow the 3D surface of the workpiece to be processed (object to be ground), so that small unevenness on the workpiece to be processed has no negative effect or substantially no negative effect on the grinding action generated. This is also an advantageous property when used as a dental cleaning product (toothbrush) in order to achieve substantially complete cleaning of the workpiece to be processed, such as cleaning teeth when brushing teeth.

[0056] Here, the shape of the surface area 12-A of the carrier 12 can also help to easily discharge dirt, such as removed material or grinding dust from the workpiece being processed, to the outside, so that the generated grinding dust can be more easily removed or sucked away without clogging the grinding tool 10, thereby achieving a long service life of the grinding tool 10.

[0057] Surface contouring on the surface region 12-A of the carrier 12 can be carried out, for example, during the method 300 for producing a coated grinding tool 10 described below, by introducing and obtaining the desired contouring of the surface region of the carrier 12 by means of a hot or low-temperature spraying device (plasma spraying device) used therein through the thermal action of the carrier material.

[0058] According to an embodiment, the geometric design of the surface area 12-A of the carrier 12 can basically accept any free-form surface, which is constructed, for example, as a counterpart or a negative mold relative to the workpiece to be processed, wherein the processing can be a grinding process, a cleaning process, a polishing process, etc.

[0059] If the workpiece is now designed to be spherical or spherical segment-shaped, for example, the carrier 12 can have a surface area 12-A that is designed as a negative mold or a counterpart to the spherical or spherical segment-shaped workpiece. Other possible geometric designs of the surface area 12-A of the carrier 12 can be, for example, cylindrical, conical, truncated cone, etc., or a threaded structure in order to form a negative mold for the corresponding workpiece (=3D object) in the form of, for example, a sphere, a recess, a hole, a through hole, a thread, etc. However, the enumeration of these 3D objects should not be considered exhaustive.

[0060] By configuring the surface area 12-A of the carrier 12 as a negative mold of the surface area 12-A to be processed of the workpiece 12, the surface processing or surface load of the grinding tool 10 can be applied to the surface area to be processed of the workpiece. Therefore, an extremely uniform grinding effect, polishing effect and / or cleaning effect can be obtained for any 3D object (=workpiece to be processed). By uniform and surface processing of the workpiece, an extremely uniform grinding, polishing and / or cleaning pattern can be achieved on the workpiece to be processed by the grinding tool 10.

[0061] According to one embodiment, the coated grinding tool 10 can have a carrier material, which includes, for example, cork, textile, rubber, gum, elastomer, PVC (polyvinyl chloride), PUR (polyurethane), paper, latex, PE (polyethylene), PA (polyamide), PET (polyethylene terephthalate), PC (polycarbonate), SBR (styrene-butadiene rubber), PTHF (polytetrahydrofuran), carbonate, and has a foam material, a brush bristle material and / or a film material. The carrier material can be designed, for example, flexibly or elastically.

[0062] According to one embodiment, the grinding functional particles 16 can be designed as hard particles or grains and can, for example, have corundum, zircon corundum, silicon carbide, boron nitride, glass, minerals (e.g. apatite), natural substances (e.g. crushed or ground shells, core shells, etc.) or diamonds with a particle size between 100 nm and 2 mm. According to one embodiment, the grinding functional particles 16 can have an inert material, such as a material that is stable and does not react under given conditions. Now, the resulting abrasion (under a specified pressure) of the grinding tool 10 is also adjustable by the concentration and / or hardness of the grinding functional particles 16 in the grinding surface coating 14.

[0063] According to one embodiment, the coated grinding tool 10 can have a thermoplastic adhesive 18, which has a thermoplastic polymer material, such as PE (polyethylene), PA (polyamide), PC (polycarbonate, ABS (acrylonitrile butadiene styrene), PVC (polyvinyl chloride), PET (polyethylene terephthalate), PEEK (polyether ether ketone), PTFE (polytetrafluoroethylene), PUR (polyurethane), PMMA (polymethyl methacrylate) or PTHF (polytetrahydrofuran). The carrier material can also be flexible or elastic, for example, wherein the grinding functional particles, i.e. the abrasive or the grinding material, are reliably connected to the carrier material in a firmly adherent manner (e.g. in a form-fitting manner).

[0064] According to one exemplary embodiment of the coated abrasive tool 10 , the thermoplastic binder 18 and the carrier material 12 can have the same material or the same material composition.

[0065] By means of this bonding or anchoring of the abrasive functional particles 16 on a carrier 12, for example, with an elastic carrier material, the abrasive functional particles (=grinding particles) 18 can acquire a certain freedom of movement during the grinding process, so that when pressure is (increasingly) applied to the coated grinding tool 10, i.e. when the coated grinding tool is pressed against the workpiece to be machined, the embedded abrasive functional particles (=engaged grinding particles) 16 do not break off, break off from the bond or break off as in conventional grinding parts in the prior art, but rather perform an evasive movement due to the flexibility or elasticity of the carrier material, for example sink into the carrier material, and / or perform an elastic lateral tilting. Thus, this possible vertical and / or lateral evasive movement of the embedded abrasive functional particles 16 can produce a 3D mobility of the embedded abrasive functional particles 16. As a result, the wear of the embedded abrasive functional particles can be significantly reduced, thereby providing an extremely dimensionally stable coated grinding tool.

[0066] In particular, the abrasive effect, the sliding properties relative to the workpiece to be machined and also the mechanical stability of the grinding tool can now be adjusted in a targeted manner by selecting the material of the thermoplastic binder, i.e., for example, a corresponding hardness of the thermoplastic binder, in coordination with the abrasive functional particles and, for example, an elastic carrier material. Thus, for example, an increase in the hardness of the thermoplastic binder (i.e., a hard or rigid thermoplastic binder) can contribute to increasing the abrasive action of the grinding tool, improving the sliding properties and increasing the stability.

[0067] In general, it can therefore be determined that by applying the abrasive functional particles 16 to the carrier material according to the present invention, i.e., on the one hand, by embedding or anchoring the abrasive functional particles 16 in the carrier material, and on the other hand, by embedding the abrasive functional particles 16 in the thermoplastic adhesive 18, and by the resulting material-fitting and / or shape-fitting connection (= adhesive connection) of the abrasive functional particles 16 on the carrier material, an extremely reliable, firmly adhered connection is obtained between the abrasive functional particles 16 acting as a cutting material and the carrier material of the carrier 12.

[0068] By the above-mentioned "3D mobility" of the embedded abrasive functional particles 16 on the carrier 12 and the resulting firmly adhered connection between the abrasive functional particles 16 and the carrier 12, relatively large abrasive functional particles 16 can be used on the workpiece to be processed without changing the surface processing results. Thus, relative to conventional abrasives using the concept of the present invention, abrasive functional particles 16 having an average particle size at least twice or three times larger can be used. Thus, for conventional abrasives with a particle size of P3000, abrasive functional particles with an average diameter of 7 μm are used, while for the abrasive tool 10 according to the present invention, in the case of a particle size of P3000, due to the 3D mobility of the abrasive functional particles 16, abrasive functional particles 16 with an average particle size (d50) of 15 μm-25 μm, 18 μm-22 μm and about 20 μm can be used on the flexible carrier 12.

[0069] Since relatively large abrasive functional particles 16 can be used, a higher material removal rate and thus a faster processing speed can be achieved with the current grinding tool 10 with substantially the same surface result compared to conventional abrasives. The use of larger abrasive functional particles 16 also leads to an increase in the service life of the grinding tool 10, because larger functional particles 16 have a larger area for bonding to the carrier material of the carrier and thus firmly adhering to it.

[0070] The 3D mobility of the grinding functional particles 16 on the carrier 12 leads in particular to a uniform, planar processing effect on the workpiece to be processed, i.e. to a very uniform grinding-polishing-and / or cleaning pattern. Thus, in particular, scratches that occur under conventional abrasives can be eliminated by so-called "rolling particles", because the grinding functional particles 16 can "sink" into, for example, a flexible or perforated carrier material of the carrier 12 when the force is large or increased. Therefore, the grinding tool 10 according to the present invention can effectively prevent visual changes in the processing pattern on the workpiece to be processed even under unevenly distributed pressing forces, which is particularly advantageous for processing under "manual operation". Therefore, a uniform, repeatable processing pattern, i.e., a grinding, polishing and / or cleaning pattern, can also be achieved in manual operation. Even if the grinding tool 10 is stuck with the workpiece to be processed by an operator or an operating instrument, it can be eliminated or at least significantly slowed down by the 3D mobility of the grinding functional particles 16 on the carrier 12.

[0071] Furthermore, the resulting abrasiveness of the grinding tool 10 (under a defined contact force) can now be adjusted by the size and / or concentration of the abrasive functional particles 16 in the grinding surface region, and / or by the hardness of the thermoplastic binder 18. Furthermore, relatively low wear of the grinding tool 10, i.e., relatively low abrasiveness of the abrasive functional particles (cutting material) 16, can be achieved during use, so that a significantly longer service life can be achieved by the coated grinding tool 10 according to the invention compared to the grinding parts known from the prior art.

[0072] Since the abrasive functional particles 16 are designed as an abrasive surface coating 14, for example, as a "single layer" in combination with a thermoplastic binder 18, an extremely dimensionally stable abrasive tool 10 can be achieved, which, in addition, has extremely good sliding properties on the workpiece to be machined, i.e., the abrasive tool 10 can be guided on the surface to be machined of the workpiece to be machined with relatively little force expenditure.

[0073] The applied thermoplastic adhesive 18 can also provide protection for the carrier 12 or the carrier material, for example in the case of a foam material as carrier material.

[0074] Furthermore, applied thermoplastic adhesive 18 can facilitate relatively easy removal or suction of grinding dust, ie material removed from the workpiece to be machined, so that abrasive grinding tool 10 is substantially free of clogging, whereby a long service life of abrasive grinding tool 10 can be achieved.

[0075] Furthermore, when using an open-pored carrier 12, such as PUR foam or a flowing material (=open-pored fabric), the grinding dust can be suctioned off over the surface through the ground grinding tool 10. In this case, the ground grinding tool 10 can be arranged on a processing device provided with a suction device, for example, by means of a Velcro fastener or other air-permeable connection. Thus, the ground grinding tool 10 can be designed to be permeable to air flow and to the removal of particles (grinding dust).

[0076] The thickness of the open-pored carrier 12 can lie, for example, in the range between 0.5 mm and 12 mm, wherein the thinner the carrier 12 is, the higher the gettering efficiency is generally.

[0077] The coated grinding tool 10 can be configured as a grinding tool, a polishing tool, a cleaning pad or a grinding pad (pad) or a cleaning body. In addition, the coated grinding tool 10 can be configured as a brush, for example, wherein the grinding surface coating is arranged on the upper side or end side of the brush filling (=bristles) of the brush.

[0078] The coated grinding tool 10 can be used effectively without paste, for example, for grinding and polishing painted surfaces, for example in the motor vehicle sector, in ships and the like, when processing glass (in particular with the flexible carrier 12), when grinding and polishing metal surfaces, when cleaning metal surfaces and / or when cleaning and treating floor coverings.

[0079] According to one embodiment, the coated grinding tool 10 can also be implemented as a wiper blade, for example, wherein the abrasive functional particles 16 are arranged on the wiper blade (not shown) together with the thermoplastic adhesive 18, and ensure improved sliding properties, reduced wear and a high removal rate of stubborn dirt (such as insects, etc.) on the windshield, that is, a high cleaning effect. Here, by embedding the abrasive functional particles 16 in the grinding surface coating 14, wear of the glass material of the windshield can be avoided.

[0080] In the case of the grinding tool 10 being configured as a wiper blade, the grinding surface coating 14 can be arranged, for example, on the side regions of the wiper blade and optionally on the wiping edge of the wiper blade. For example, materials with a relatively low or small hardness (e.g. Mohs hardness) relative to the glass material of the windshield can be used for the grinding functional particles 16. Thus, in addition to the materials already mentioned, for example, minerals (e.g. apatite) or natural substances (e.g. crushed or ground shells, core shells, etc.) can also be used for the grinding functional particles 16.

[0081] Furthermore, coated grinding tools can be produced very efficiently, for example, by the following production method.

[0082] According to one embodiment, the abrasive action of the abrasive tool 10 can be adjusted by the distribution density and / or size of the abrasive functional particles 16 applied as a single layer on the surface region 12 -A of the carrier 12 .

[0083] Figure 2 1 shows a schematic cross-sectional view of a surface region 12-A of a coated grinding tool 10 according to another exemplary embodiment, the grinding tool having an open-porous base material or carrier material 12. Figure 2 As shown in , the carrier material 12 has an open surface area 12-A with an average pore diameter d3, wherein the abrasive functional particles 16 have an average diameter or mean particle size d1, wherein d1≤1 / 2d3 or d1≤1 / 4d3. The given size ratios ensure that the abrasive surface coating 14 can be implemented as a coating adjacent to the contour.

[0084] By arranging the abrasive functional particles 16 and the thermoplastic adhesive 18 as a single layer, the abrasive surface coating 14 can be arranged very close to the contour on the open surface area 12-A of the carrier material 12, so that when the workpiece is processed using the coated abrasive tool 10, a large number of abrasive functional particles 16 can act on the surface coating to be processed of the workpiece, and thus the processing process can be performed extremely efficiently.

[0085] Foams or fleeces etc. can be used as open-cell carrier materials, for example. Typical foams are elastic and have an upset hardness of 20 to 60 according to DIN 53577 or ISO 3386. This corresponds to a pressure of 2 kPa to 6 kPa when the foam is compressed by 40%.

[0086] As in Figure 2 It is also shown that a small amount of abrasive functional particles 16', for example less than 20%, 10%, 2% or 1% of the abrasive functional particles 16, can be embedded in the carrier material on the surface area 12-A of the carrier 12 and thus anchored therein (in a shape-fitting and firmly adhered manner), without the need for an additional thermoplastic adhesive 18 for an additional adhesive connection.

[0087] This can be achieved, for example, by placing the carrier material 12 in a position relative to the vertical (= Figure 2 The abrasive functional particles 16' appear on a surface area 12-A having an undercut 12-B (in the z-direction), wherein such abrasive functional particles 16' can be placed in an embedded position in the undercut 12-B based on the kinetic energy obtained during the coating process and by means of elastic collision (= rebound) with other embedded abrasive functional particles 16.

[0088] In other respects, Figure 1a The above description of the coated abrasive tool 10 of -b is also applicable to Figure 2 The coated grinding tool 10. In addition, the coated grinding tool can be produced very efficiently, for example, by the production method described below, that is, the grinding surface coating 14 can be configured as a coating adjacent to the contour.

[0089] Figure 3 A schematic block diagram of an apparatus or system 100 for coating a tool 10 with an abrasive surface coating 14 is shown according to another embodiment.

[0090] According to one embodiment, the device 100 for conveying and dispensing powder 112 includes: a powder storage container 110 for storing and providing powder 112; a conveyor 120 (e.g., a vibrating conveyor) having a conveying mechanism 122, the conveying mechanism having an adjustable conveying rate, for delivering the powder 112 to a powder outlet 124 at an adjustable conveying rate; a pipeline assembly 130 for conveying the powder 112 delivered by the conveyor 120 in a conveying gas 115 as a powder-gas mixture 116, and for supplying the powder-gas mixture 116 to a powder processing mechanism 200, wherein the pipeline assembly 130 is provided with a powder storage container 110 for storing and providing powder 112; a conveyor 120 (e.g., a vibrating conveyor) having a conveying mechanism 122, the conveying mechanism having an adjustable conveying rate, and the powder 112 is delivered to a powder outlet 124 at an adjustable conveying rate; and a pipeline assembly 130 for conveying the powder 112 delivered by the conveyor 120 in a conveying gas 115 as a powder-gas mixture 116. 30 is provided with a separation mechanism 132 so as to remove a specified portion PM2 of the powder 112 from the powder-gas mixture 116; a powder quantity measuring assembly 140, for detecting the powder quantity PM2 separated per unit time, and for providing a powder quantity information signal S1, wherein the powder quantity PM2 removed or separated per unit time has a predetermined ratio within a tolerance range compared to the powder quantity PM1 conveyed by the conveyor 120; a control mechanism 150, which is designed to adjust the adjustable conveying rate of the conveyor 120 to a predetermined rated value based on the powder quantity information signal S1 provided by the powder quantity measuring assembly 140.

[0091] By very precisely dosing the required amount of powder to a powder handling device, for example to a plasma coating assembly or a plasma nozzle for plasma spraying, essentially any surface structure of the coated grinding tool 10 can be coated very uniformly and precisely with the grinding surface coating 14, wherein the grinding properties of the applied grinding surface coating 14 can also be adjusted and dimensioned very precisely. The applied layer structure or grinding surface coating can also be connected to the component to be coated in a material-locking and / or form-locking manner or be designed integrally therewith.

[0092] therefore, Figure 3A schematic diagram shows a device 100 for conveying or inputting and dispensing powder 112 according to one embodiment. The device 100 for conveying and supplying powder 112 has a powder storage container 110 for storing and providing powder 112. The device 100 also includes a conveyor 120, such as a vibrating conveyor, which has a conveying mechanism or a conveying trough 122, the conveying rate of which is adjustable, for delivering the powder 112 to a powder outlet 124 so as to provide a powder amount PM1 per unit time (e.g., per second) at the powder outlet 124. The device 100 also includes a pipeline assembly 130 for conveying the powder 112 delivered by the conveyor 120 in a conveying gas 115 as a powder-gas mixture 116, and for supplying the powder-gas mixture 116 to an (optional) powder processing mechanism 200, which can be constructed, for example, as a plasma coating assembly or a plasma nozzle 200 for plasma spraying according to DIN 657. The pipeline assembly 130 further comprises a separation mechanism or bypass 132 in order to separate or remove a specified portion of the powder 112 or a specified powder amount PM2 from the powder-gas mixture 116. The device 100 further comprises a powder amount measuring assembly 140 for detecting the amount of powder separated per unit time and providing a powder amount information signal S1 based on the amount of powder separated per unit time. Now, the separation mechanism 132 is configured so that the amount of powder PM2 removed per unit time has a predetermined ratio within a tolerance range compared to the conveyed powder amount PM1 (total powder amount) of the conveyor 120, and thus also has a predetermined ratio compared to the powder amount PM3 (= conveyed powder amount PM1 minus the removed powder amount PM2) input from the pipeline assembly 130 to the powder processing mechanism 200 per unit time.

[0093] The device 100 also includes a control mechanism 150, which is designed to control the conveyor or vibrating conveyor 120 using a control signal S2 based on the powder quantity information signal S1 provided by the powder quantity measuring assembly 140, so as to adjust the conveying rate of the conveyor 120 to a predetermined rated value or target value, that is, to a target conveying rate PM1, so that accurate dosing of the conveyed powder quantity PM1 can be obtained, and thereby the powder quantity PM3 input to the powder processing mechanism 200 can be obtained.

[0094] In order to provide sufficiently good input and dosing results for the control of the conveyor 120 by the control device 150 for adjusting the conveying rate of the conveyor 120 to a predetermined target conveying rate, a tolerance range is introduced, within which the amount of powder PM2 removed per unit time separated from the powder-gas mixture by means of the separation device 132 should be in a predetermined fixed ratio compared to the delivered powder amount or total powder amount PM1 of the conveyor 120. Thus, a tolerance range is introduced for the predetermined ratio between the amount of powder PM2 removed per unit time and the amount of powder PM1 delivered per unit time of the conveyor 120. Thus, the tolerance range can indicate, for example, that the actual ratio of the amount of powder removed per unit time to the total amount of powder delivered per unit time of the conveyor 120 deviates from the predetermined ratio by 20%, 10%, 5%, 2%, 1% or 0.1%, or that there is no deviation or only a negligible small deviation. The smaller the tolerance range assumed and adhered to, the more accurately the control mechanism 150 can adjust the adjustable conveying rate of the conveyor 120 to a predetermined target conveying rate.

[0095] The tolerance range can, for example, take into account changing environmental parameters (such as temperature, etc.) or deviating physical properties of the powder (such as size and / or density of the powder particles), or changes (fluctuations) in the gas pressure or gas temperature of the conveying gas 115, or other environmental parameters and / or influencing variables.

[0096] According to one embodiment, the separation device 132 is designed to remove a predefined portion or a predetermined ratio of the powder quantity PM1 delivered by the conveyor 120 at the powder outlet 124 and conveyed in the pipeline assembly 130 in the powder-gas mixture 116. Here, the separation device 132 can be provided with a separation path 133 as a pipeline section or pipe section of the pipeline assembly 130, for example. The separation device 132 can be divided into different volume areas in particular along the flow direction of the powder-gas mixture in order to obtain a uniform distribution of the powder-gas mixture in the separation device 132, so as to maintain the predetermined ratio between the powder quantity PM2 removed per unit time and the powder quantity PM1 conveyed by the conveyor 120 or the powder quantity PM3 input to the powder processing device 200 as accurately as possible. According to one embodiment, the separation device 132 can have an inlet area, an expansion area or a suction area, a homogenization area, a separation area or a removal area and an output area or a compression area in the flow direction of the powder-gas mixture.

[0097] According to one embodiment, the powder quantity measuring assembly 140 is designed to detect or determine the weight of the powder quantity PM2 separated per unit time based on the powder quantity PM2 taken out or separated per unit time. Then, based on the detected weight of the powder quantity separated per unit time, a powder quantity information signal S1 can be provided from the powder quantity measuring assembly 140 to the control mechanism 150.

[0098] According to one embodiment, the powder amount measuring assembly 140 may be configured as a weighing unit or a balance in order to “directly” detect the weight (or mass) of the amount of powder separated per unit time.

[0099] According to another embodiment, the powder amount measurement assembly 140 may be designed to optically detect the amount of separated powder particles 112 and provide a powder amount information signal S1 having the amount of separated powder particles to the control mechanism 150 .

[0100] According to another embodiment, the powder quantity measuring assembly 140 can be designed to optically detect the number and, for example, the corresponding size or average size of the separated powder particles 112, and provide a powder quantity information signal S1 having the number and (corresponding or average) size of the separated powder particles to the control mechanism 150.

[0101] Based on the number and (corresponding or average) size of the separated powder particles, the volume of the powder amount PM2 separated per unit time can be determined, wherein, based on the determined volume of the powder amount separated per unit time and also based on the (e.g. predetermined) material density of the powder particles used, the weight of the powder amount PM2 separated per unit time can be determined.

[0102] In this case, the volume and / or weight of the powder quantity PM2 separated per unit time can be determined or calculated in the powder quantity measuring assembly 140 or in the control device 150 .

[0103] When optically detecting the separated powder quantity PM2, the powder quantity information signal S1 provided by the powder quantity measuring assembly 140 may include at least the number of separated powder particles, provided that the average size and the average material density of the separated powder particles are known and available as information. Thus, the powder quantity measuring assembly 140 or the control mechanism 150 may, for example, calculate the weight of the separated powder quantity PM2 per unit time.

[0104] According to one embodiment, the control mechanism 150 is designed to determine the current conveying rate PM1 of the conveyor 120 based on the powder quantity information signal S1, and then control the conveyor 120 when there is a deviation between the current conveying rate of the conveyor 120 and the target conveying rate so as to adjust the current conveying rate PM1 to the target conveying rate PM.

[0105] During operation of the device 100 for conveying and dosing powder 12 , the control device 150 can thus be designed to continuously regulate or track the current, adjustable conveying rate of the conveyor 120 to a desired target conveying rate.

[0106] The conveying mechanism 122 of the conveyor 120 as a vibrating conveyor is, for example, excited to perform vibrating movements perpendicularly and parallel to the conveying direction in order to convey powder or powder particles 112, wherein the vibrating conveyor 120 is designed to carry out vibrating movements of the conveying mechanism 122 at a vibration frequency of 1 Hz to 1 kHz or 50 Hz to 300 Hz or higher with a vibration width or amplitude in the range of 1 μm to 1 mm or 5 μm to 200 μm in order to obtain an adjustable conveying rate.

[0107] According to one embodiment, the conveyor 120 may be configured as a piezoelectric or magnetically driven conveying mechanism 122 , ie the vibration frequency and the vibration width are obtained by means of a piezoelectric and / or magnetic actuator.

[0108] Now, according to one embodiment, the control mechanism 150 may be designed to supply a control signal S2 to the conveyor 120 based on the powder amount information signal S1 so as to adjust the vibration movement of the conveying mechanism 122 of the conveyor 120 and obtain a target conveying rate.

[0109] According to one embodiment, the powder storage container 110 has a discharge mechanism or a discharge valve 114 for supplying powder to the conveying mechanism 122. Here, the supply rate of the powder 112 or the powder amount PM0 supplied from the powder storage container 110 to the conveying mechanism 122 of the vibrating conveyor 120 per unit time is, for example, related to the distance D1 set between the discharge end 114-A of the discharge mechanism 114 and the conveying surface area 122-A of the conveying mechanism 122.

[0110] According to one embodiment, a distance adjustment mechanism (in Figure 3 ), in order, for example, to provide for a pre-dosing or coarse dosing of a powder quantity PM0 which is provided from the powder supply container 110 to the conveying mechanism 122 of the conveyor 120 .

[0111] As already mentioned above, powder processing device 200 , which is provided with powder-gas mixture 116 having a regulated powder quantity PM3 per unit time, can be designed, for example, as a plasma coating assembly or plasma nozzle for plasma spraying according to DIN 657.

[0112] The powder conveying device 100 can be generally used for all applications for the metered conveying or feeding of aerosols to the powder processing device 200. For example, particles or solids conveyed in a carrier gas are referred to as aerosols. In addition to plasma coating applications or plasma spraying applications, the powder conveying device 100 can also be used in laser deposition welding processes or laser plasma coating processes.

[0113] Therefore, in Figure 3 The overall assembly 101 shown in the figure for producing a layer structure 270, for example a grinding surface coating 114, on a surface region 262 of a component 260 can have the above-described device 100 for conveying and dispensing the powder 112 and a plasma coating assembly 200. The plasma coating assembly 200 can, for example, have a plasma source for introducing plasma into a process region in order to activate the provided powder particles in the process region with the plasma, and can also have a laying device or a discharge nozzle for laying the activated powder particles on the surface region of the component in order to obtain a layer structure on the surface region of the coated grinding tool 10.

[0114] Figure 4 A schematic flow chart of a method 300 for manufacturing a coated abrasive tool 10 according to another embodiment is shown. The method 300 for manufacturing a coated abrasive tool 10 can be, for example, Figure 3 The device 100 shown in FIG. 1 for coating a tool 10 with an abrasive surface coating 14 is performed.

[0115] According to one embodiment, the method 300 for producing a coated abrasive tool has a step 310: a powder mixture is fed into a thermal spraying device (e.g. according to DIN EN 657) or a low-temperature spraying device, which faces the surface area 12-A of the carrier 12 to be coated, wherein the powder mixture has abrasive functional particles and a thermoplastic binder. Here, the powder mixture has a thermoplastic binder material 18 and functional particles 16 as separate powder particles, or the powder mixture has functional particles 16 at least partially or completely coated with a thermoplastic binder 18. In addition, in the thermal or low-temperature spraying device, a reduction in the viscosity of the thermoplastic binder 18 is caused.

[0116] Based on the required energy input in the spraying device, a thermal spraying device 200 or a low-temperature spraying device 200 is used. The influence of the energy input of the spraying device 200 is based on the size of the ground functional particles, wherein the following generally applies: the larger the functional particles 16, the more energy is required in order to activate the thermoplastic binder 18, i.e., to convert into a melt. In addition, with regard to the energy input of the spraying device 200, the melting point of the "thermoplastic binder and carrier material" should be taken into account, wherein the following generally applies: the higher the melting point of the carrier 12 or the thermoplastic binder 18, the more energy is required to convert them into a melt.

[0117] In step 320 of method 300, abrasive functional particles 16 are applied to surface region 12-A of carrier 12 together with adhesive 18 having reduced viscosity, wherein thermoplastic adhesive 18 is cured again when applied to surface region 12-A of carrier 12, and abrasive surface coating 14 is formed on carrier 12 of abrasive tool 10 using functional particles 16 and thermoplastic adhesive 18. According to one embodiment, thermoplastic adhesive 18 and abrasive functional particles 16 are applied (partially) simultaneously to surface region 12-A of carrier 12 and are connected to the carrier material in a material-fitting and / or form-fitting manner.

[0118] According to one embodiment, when the grinding functional particles 16 are applied 320 onto the surface area 12-A of the carrier 12, at least a portion of the grinding functional particles 16 are also partially embedded in the carrier material of the carrier 12 at an embedding depth d3, wherein the embedding depth d3 is equal to at least 5% (or 10%) and up to 95% (or 99%) of the average diameter d1 of the grinding functional particles, wherein 0.95d1≥d2≥0.05d1.

[0119] The embedding of the abrasive functional particles 16 present on the carrier 12 into the carrier material occurs, for example, on the basis of the kinetic energy of the abrasive functional particles 16 acquired during the coating process.

[0120] According to one embodiment, method 300 includes step 330: adjusting the distribution density of functional particles 16 (as a single layer) on surface 12-A by adjusting the proportion of ground functional particles 16 in a mixture consisting of thermoplastic adhesive 18 and functional particles 16 supplied to spraying device 200 so that the ground functional particles (16) are applied as a single layer in combination with thermoplastic adhesive (18).

[0121] According to one embodiment, method 300 has step 340: adjusting the powder delivery amount and the feed on the carrier surface 12-A so that when applying the abrasive functional particles 16 and the thermoplastic adhesive 18, at least 60% of the area of ​​the abrasive surface coating 14, the abrasive functional particles 16 and the thermoplastic adhesive 18 are combined as a single layer on the surface area 12-A of the carrier 12, that is, a single layer.

[0122] According to one embodiment, the carrier 12 has an open surface area 12-A having an average pore size d3, wherein the functional particles 16 have an average diameter d1, wherein d1≤1 / 2d3 or d1≤1 / 4d3, so as to achieve a firmly adhered connection of the grinding surface coating as a single layer on the open carrier surface, which grinding surface coating follows the topological structure of the open surface area adjacent to the contour.

[0123] According to one embodiment, the carrier material comprises cork, textile, rubber, gum, elastomer, PVC, PUR, paper, latex, PE, PA, PET, PC, SBR, PTHF, carbonate, foam material, brush bristle material and / or film material. According to one embodiment, the abrasive functional particles are configured as hard particles and have a particle size between 100 nm and 2 mm of corundum, zircon corundum, silicon carbide, boron nitride, glass, mineral (apatite), natural substance (shell) or diamond, wherein the thermoplastic binder can comprise PE, PA, PC, ABS, PVC, PET, PEEK, PTFE, PUR, PMMA or PTHF.

[0124] In the present method 300 for producing a coated abrasive tool 10, a starting material for the coating is first prepared, wherein abrasive functional particles 16 (=cutting material) are mixed with a thermoplastic binder or a polymer material 18. Here, the abrasive functional particles can already be combined with the thermoplastic binder, or alternatively (or additionally), the abrasive functional particles 16 and the thermoplastic binder 18 (for example polymer particles) can be supplied to the spraying device 200 in a uniformly distributed manner. The concentration of the polymer material can be, for example, in the range of 5% to 95% (MP). The starting material, i.e. the abrasive functional particles 16 and the thermoplastic binder 18, is connected to the carrier 12 by means of a thermodynamic process. Optionally, after the abrasive surface coating 14 is applied to the carrier 12, a hot pressing process (for mechanically applying pressure) can also be carried out at an elevated temperature.

[0125] Now refer to the attached Figure 5a -b and 6a-b introduce and explain below as a plurality of designs of coated abrasive tool 10 of abrasive dental product 50, such as dental cleaning product, dental grinding product or dental polishing product. As will be explained below, abrasive dental product 50 has coated abrasive tool 10 as processing part or active part.

[0126] A series of different possible embodiments of the coated grinding tool 10 are described below by way of example, for example in the case of grinding a dental product 50. In the present description of these embodiments, components having the same technical structure and / or the same technical function are marked with the same reference numerals or the same names, wherein a detailed description of these components is not repeated for each embodiment. Figure 1a -b, Figure 2 , Figure 3 and Figure 4 The description is also applicable to other embodiments as will be described below. In the following description, the differences from the above-mentioned embodiments, such as additional components or additional functions, and the technical effects produced thereby are mainly discussed.

[0127] Now Figure 5a -b shows schematic side and cross-sectional views of an abrasive dental product 50 in the form of a dental cleaning product or toothbrush head 52 according to another embodiment.

[0128] According to an embodiment of the abrasive dental product 50, the carrier 12 can have a foam material as a carrier material, wherein the abrasive surface coating 14 is arranged on the surface area 12-A of the foam material. The abrasive surface coating 14 in turn has abrasive functional particles 16 and a thermoplastic binder 18, wherein the abrasive functional particles 16 are applied as a single layer. The foam material of the carrier 12 can be designed to be open-pored, for example, and can also be elastically deformable.

[0129] According to one embodiment, the abrasive dental product 50 is configured as a dental cleaning product, wherein the coated abrasive tool 10 is arranged as a cleaning abrasive pad (cleaning pad) on the abrasive dental cleaning product 50. The dental cleaning product 50 can be a toothbrush head 52 of an electric or manual toothbrush, wherein the coated abrasive tool 10 is arranged as a cleaning abrasive pad on the toothbrush head 52.

[0130] According to one embodiment, a support structure 12-1 of a carrier material for cleaning the abrasive pad 10 is provided on the dental cleaning product 50. Thus, the carrier 12 may have a support structure 12-1 on which the carrier material is arranged, wherein the carrier material is mechanically fixed to the support structure 12-1 and surrounds the support structure 12-1 partially or in a cap-like manner.

[0131] The support structure 12-1 can be designed, for example, to be (at least partially) air-permeable so that the carrier material of the carrier 12 can also be accessed on both sides for drying or sanitary treatment (for example with disinfectants). The cleaning and grinding pad 10 can be arranged on the support structure 12-1 in a replaceable or fixedly connected manner. The support structure 12-1 can then also be provided, for example, for fixing or releasably mechanically fixing the cleaning and grinding pad 10 to the dental product 50. The cleaning and grinding pad 10 itself can also be fixedly or releasably mechanically fixed or fastened to the support structure 12-1.

[0132] According to one embodiment, the foam material of the carrier 12 may be configured as a foam solid material (solid body - see Figure 5a ), or alternatively configured as a relatively thin layer ( Figure 5b ).

[0133] According to one embodiment, the coated grinding tool 10 configured as a cleaning grinding pad can, for example, have a flat grinding surface 14-A or an outwardly curved (convex) grinding surface (dashed line) 14-B. In the case of the outwardly curved (convex) grinding surface (dashed line) 14-B, the carrier 12 can also have a correspondingly adapted outwardly curved (convex) surface contour (dashed line) 12-C in order to support the carrier material.

[0134] According to one embodiment, the foam material of the carrier 12 may be designed to contain a cleaning fluid, wherein the drainage of the cleaning fluid (ie, liquid or gel) upon application may be adjusted based on the porosity of the foam material and the viscosity of the cleaning fluid.

[0135] According to one embodiment, the abrasive functional particles 16 may also include a (further) thermoplastic material, wherein the thermoplastic material of the abrasive functional particles 16 is harder than the thermoplastic binder 18 .

[0136] According to one embodiment, the grinding surface coating 14 can have an additional material in the form of nanoparticles or microparticles with antibacterial and / or antiviral effects. The antibacterial and / or antiviral nanoparticles or microparticles can be applied to the grinding surface coating 14 in a thermoplastic adhesive 18 and / or in an additional antibacterial and / or antiviral layer 14-1.

[0137] Now Figure 6a -b shows schematic side and cross-sectional views of an abrasive dental product 50 in the form of a dental cleaning product or toothbrush head 52 according to another embodiment.

[0138] According to one embodiment, the toothbrush head 52 may have both a cleaning abrasive pad 10 and cleaning bristles 54, which may be arranged to be laterally adjacent to the cleaning abrasive pad 10 or to laterally surround the cleaning abrasive pad 10. The cleaning abrasive pad 10 may be replaceably or fixedly connected to the support structure 12-1.

[0139] exist Figure 6a In the embodiment, the cleaning abrasive pad has, for example, a flat abrasive surface 14-A. Figure 6b In the embodiment of the present invention, the cleaning grinding pad has, for example, an outwardly curved (convex) grinding surface 14-B.

[0140] According to Figure 5a -b and Figure 6a The embodiment of the abrasive dental product 50 shown in FIG. 1-b exemplarily describes a dental cleaning product in the form of a toothbrush head 52, wherein some technical effects of different designs are described below.

[0141] According to one embodiment, the toothbrush head 52 has only a cleaning pad (cleaning pillow or polishing pillow) 10, wherein the toothbrush head 52 may also optionally have bristles 54, which are arranged transversely with respect to the cleaning pad 10. Thus, the cleaning pad 14 has a cleaning and smoothing function for the teeth, while the optional bristles can additionally be used to clean the spaces between the teeth.

[0142] The additional antibacterial and / or antiviral material 14 - 1 in the form of nanoparticles and / or microparticles may include, for example, Ag particles, Cu particles, Zn particles or alloys thereof and may be embedded in or arranged on the thermoplastic adhesive 18 .

[0143] Diamond (industrial diamond), for example, can be used as abrasive functional particles 16 , wherein the grain size (average diameter d1 ) can be designed differently depending on the intended use of the dental cleaning product.

[0144] If the dental cleaning product 50 is designed for daily use, the grain size may be in the range of 0.5 μm-5.0 μm, 2 μm-4 μm, or about 3 μm ± 0.5 μm. If the dental cleaning product is prescribed for weekly use, the grain size d1 may be in the range of 5 μm to 15 μm, 7 μm to 11 μm, or 9 μm ± 1 μm. If, for example, the dental cleaning product 50 is prescribed for monthly use to clean teeth, the average grain size d1 may be in the range of 15 μm to 25 μm, 17 μm to 23 μm, or 20 μm ± 2 μm.

[0145] The coated abrasive tool or cleaning pad 10 has, for example, a foam material (sponge) as carrier material for the carrier 12, which foam material is, for example, open-pored. Such a foam material of the cleaning pad 10 is particularly suitable for accommodating very low-viscosity fluids, such as liquid or gel-like cleaning additive products (toothpaste), and for quantitatively discharging or outputting the fluid after the foam material has accommodated the fluid or has been impregnated with the fluid. The lower viscosity of the gel (compared to conventional toothpaste) generally leads to better distribution during application. By being designed as a foam material pad, the abrasive tool 10 can accommodate any gel or liquid, which can also have fragrances, ether oils, fluorides, drugs and / or anti-inflammatory additives.

[0146] Due to the medium porosity of the carrier material (i.e., the foam material) of the carrier 12, the discharge or dosing of the cleaning additive can be controlled, i.e., it can be provided relatively evenly over a relatively long period of time during the cleaning process, for example, during the entire brushing process. Thus, the cleaning pad 10 achieves a double effect or a double action, in that the abrasive surface coating 14 leads to cleaning of the surface of the teeth, while the foam material ensures fluid application. In particular, substantially liquid cleaning additives can be used, which can be hygienically accommodated, for example, by a fluid dispenser substantially contactlessly.

[0147] Furthermore, as explained previously, a support structure 12-1 can be provided in order to mechanically fix the carrier 12 of the cleaning pad 10, wherein the cleaning pad 10 can partially or cap-likely surround the support structure 12-1 in order to provide a flat or outwardly curved (convex) grinding surface 14-1, 14-2 of the cleaning pad 10. The resulting hardness of the cleaning pad 10 can be adjusted by the thickness of the foam material (= carrier material 12) of the carrier 12 adjacent to the support structure 12-1, i.e., the greater the thickness of the foam material adjacent to the support structure 12-1 in the region of the cleaning surface or grinding surface 14-1, 14-2, the softer the cleaning pad 10 is constructed (assuming that the foam material remains unchanged). In addition, the support structure 12-1 also acts as a mechanical (fixed or releasable) holder for the cleaning pad 10.

[0148] Due to the resulting hardness of the cleaning pad 10 and the resulting deformation when pressed against the object to be cleaned (eg a tooth), a greater cleaning effect can be achieved with a small deformation due to the optimized force transmission of the abrasive surface coating 14 to the object to be cleaned.

[0149] The cleaning pad 10 can also be configured to be replaceable, that is, configured to be pluggable onto the support structure 12 - 1 , or also configured to be mechanically fixed to the support structure, for example, configured as a disposable product.

[0150] The relatively thin design of the foam material of the cleaning pad 10, for example in the range of 1 mm to 3 mm, or 1.5 mm to 2.5 mm or 2 mm ± 0.2 mm, results in a relatively rapid and hygienic drying process after use of the cleaning pad 10 in comparison with a cleaning pad with solid foam material (solid body). Since the support structure 12-1 can also be designed to be air-permeable, the carrier material of the carrier 12 is accessible on both sides for drying or hygienic treatment (e.g. with disinfectants).

[0151] Furthermore, many thermoplastic materials are approved for use in medical applications, oral hygiene, etc.

[0152] The abrasive dental product 50 can also be used as a polishing tool and / or grinding tool for finishing processes in dental technology in a CNC milling machine (CMC=Computerized Numerical Control).

[0153] An overview of embodiments of the coated abrasive tool 10, method 300 of making the same, and abrasive dental products are presented below.

[0154] According to one aspect, the coated grinding tool has the following features: a carrier having a carrier material; and an grinding surface coating on a surface area of ​​the carrier, wherein the grinding surface coating has grinding functional particles and a thermoplastic adhesive for firmly adhering at least a portion of the grinding functional particles to the carrier material, wherein at least a portion of the grinding functional particles are at least partially embedded in the carrier material and connected to the carrier material on the surface area of ​​the carrier, and wherein at least a portion of the grinding functional particles are also embedded in the thermoplastic adhesive on the surface area of ​​the carrier, wherein the thermoplastic adhesive together with the grinding functional particles is connected to the carrier material in a material-fitting and / or shape-fitting manner.

[0155] According to another aspect, the abrasive functional particles have an average diameter d1, wherein at least a portion of the abrasive functional particles of the abrasive surface coating are embedded in the carrier material at an embedding depth d2, wherein the embedding depth d2 is equal to at least 5% (or 10%) and up to 95% of the average diameter d1 of the abrasive functional particles.

[0156] According to another aspect, at least 60% of the area of ​​the abrasive surface coating is covered by a monolayer of abrasive functional particles over the surface area of ​​the carrier.

[0157] According to another aspect, the average thickness d4 of the applied thermoplastic adhesive is less than the average diameter d1 of the abrasive functional particles, and the abrasive functional particles protrude from the thermoplastic adhesive.

[0158] According to another aspect, the surface area of ​​the carrier is shaped and has protrusions, pyramids, truncated pyramids, cones, truncated cones, groove structures, spiral structures (helical structures) or waves in cross section. The abrasive functional particles are combined with a thermoplastic binder to form a single layer.

[0159] According to another aspect, the carrier material has an open-pored surface area with an average pore size d3, wherein the functional particles have an average diameter d1, wherein d1 ≤ 1 / 2 d3. The abrasive functional particles are combined with a thermoplastic binder to form a single layer.

[0160] According to a further aspect, the carrier material comprises cork, textile, rubber, gum, elastomer, PVC, PUR, paper, latex, PE, PA, PET, PC, SBR, PTHF, carbonate, foam material, film material and / or bristle material of a brush.

[0161] According to a further aspect, the abrasive functional particles are designed as hard particles and have a particle size of between 100 nm and 2 mm of corundum, zircon corundum, silicon carbide, boron nitride, glass, minerals (apatite), natural substances (shells) or diamond.

[0162] According to a further aspect, the thermoplastic adhesive comprises PE, PA, PC, ABS, PVC, PET, PEEK, PTFE, PUR, PMMA or PTHF.

[0163] According to a further aspect, the coated abrasive tool is designed as a grinding tool, a polishing tool, a cleaning body or a brush.

[0164] According to a further aspect, the abrasive action of the abrasive tool is adjusted by the distribution density of the functional particles over the surface area of ​​the carrier body.

[0165] According to another aspect, a coated grinding tool has an additional surface covering material on an existing grinding surface coating, wherein the surface covering material has properties as a dry lubricant.

[0166] According to one aspect, a method for producing a coated abrasive tool comprises the following steps: supplying a powder mixture to a hot [DIN EN 657] or low-heat plasma spray device, which is directed toward a surface area of ​​a carrier to be coated, wherein the powder mixture has abrasive functional particles and a thermoplastic binder, wherein the powder mixture has a thermoplastic binder material and functional particles as separate powder particles, or wherein the powder mixture has functional particles at least partially or completely coated with a thermoplastic binder, and wherein a reduction in the viscosity of the binder is caused in the hot or low-heat plasma spray device; and applying the functional particles together with the binder with a reduced viscosity to the surface area of ​​the carrier, wherein the thermoplastic binder solidifies again when applied to the surface area of ​​the carrier, and an abrasive surface coating is formed on the carrier of the abrasive tool using the functional particles and the thermoplastic binder.

[0167] According to another aspect, when the abrasive functional particles are applied to the surface area of ​​the carrier, at least a portion of the abrasive functional particles are also partially embedded in the carrier material of the carrier at an embedding depth d2, wherein the embedding depth d2 is equal to at least 5% and up to 95% of the average diameter d1 of the abrasive functional particles, wherein 0.95d1≥d2≥0.05d1.

[0168] According to another aspect, the method further comprises the following step: adjusting the distribution density of the functional particles on the surface by grinding the functional particles in a mixture of the thermoplastic binder and the functional particles supplied to the plasma spraying device. The ground functional particles are combined with the thermoplastic binder to form a single layer.

[0169] According to another aspect, the method further comprises the following steps: adjusting the powder delivery amount and the feed on the carrier surface so that when applying the abrasive functional particles and the thermoplastic binder, at least 60% of the area of ​​the abrasive surface coating is constructed as a single layer of abrasive functional particles in combination with the thermoplastic binder on the surface area of ​​the carrier.

[0170] According to another aspect, the carrier has an open surface area with an average pore size d3, wherein the functional particles have an average diameter d1, wherein d1≤1 / 4d3, so as to achieve a firmly adhered connection of the grinding surface coating as a single layer on the open carrier surface, which grinding surface coating follows the topology of the open surface area adjacent to the contour.

[0171] According to a further aspect, the carrier material comprises cork, textile, rubber, gum, elastomer, PVC, PUR, paper, latex, PE, PA, PET, PC, SBR, PTHF, carbonate, foam material, bristle material for a brush and / or film material.

[0172] According to another aspect, the abrasive functional particles are constructed as hard particles and have a particle size between 100 nm and 2 mm of corundum, zircon corundum, silicon carbide, boron nitride, glass, minerals (apatite), natural materials (shells) or diamonds, and the thermoplastic binder has PE, PA, PC, ABS, PVC, PET, PEEK, PTFE, PUR, PMMA or PTHF.

[0173] According to another aspect, the method further comprises the step of applying an additional material as a surface covering material to the existing abrasive surface coating, wherein the additional material is applied simultaneously with or after the thermoplastic adhesive to the surface region of the carrier provided with the abrasive functional particles.

[0174] According to another aspect, the thermoplastic binder and the abrasive functional particles are applied simultaneously to the surface area of ​​the carrier.

[0175] According to another aspect, an abrasive dental product has a coated abrasive tool.

[0176] According to one aspect, the carrier has a foam material as carrier material, wherein the abrasive surface coating is arranged on a surface region of the foam material.

[0177] According to one aspect, the foam material is open-cell and elastically deformable.

[0178] According to one aspect, the carrier has a supporting structure on which the carrier material is arranged, wherein the carrier material is mechanically fastened to the supporting structure and surrounds the supporting structure in places or in a cap-like manner.

[0179] According to one aspect, the coated grinding tool is designed as a cleaning grinding pad having a flat grinding surface or an outwardly curved (convex) grinding surface.

[0180] According to one aspect, the foam material is designed to accommodate a cleaning fluid, wherein the drainage of the cleaning fluid during application can be adjusted based on the porosity of the foam material and the viscosity of the cleaning fluid.

[0181] According to one aspect, the abrasive dental product is a dental cleaning product, wherein the coated abrasive tool is arranged on the dental cleaning product as a cleaning abrasive pad or a cleaning pad.

[0182] According to one aspect, the dental cleaning product is a toothbrush head of an electric or manual toothbrush, wherein the coated abrasive tool is arranged on the toothbrush head as a cleaning abrasive pad.

[0183] According to one aspect, the toothbrush head has a cleaning abrasive pad and also has cleaning bristles arranged laterally adjacent to the cleaning abrasive pad or laterally surrounding the cleaning abrasive pad.

[0184] According to one aspect, the cleaning abrasive pad is arranged on the support structure in a replaceable or fixed manner.

[0185] According to one aspect, the abrasive functional particles comprise a thermoplastic material.

[0186] According to one aspect, the thermoplastic material of the abrasive functional particles is harder than the thermoplastic binder.

[0187] According to one aspect, the grinding surface coating has an additional material in the form of nanoparticles or microparticles with an antibacterial and / or antiviral effect.

[0188] According to one aspect, the dental cleaning product is configured as a dental polisher, a dental drill attachment or a dental polishing rod having a polishing surface and / or a smooth surface.

[0189] Although some aspects of the present disclosure have been described as features associated with an apparatus, it is apparent that such descriptions may also be viewed as descriptions of corresponding method features. Although some aspects have been described as features associated with a method, it is apparent that such descriptions may also be viewed as descriptions of corresponding apparatus features or apparatus functions.

[0190] In the previous detailed description, different features are partially combined together in the examples to make the disclosure concise. This disclosure should not be interpreted as an intention that the examples claimed for protection have more features than those explicitly stated in each claim. Specifically, as reflected in the following claims, the features of the subject matter may be less than all the features of a single disclosed example. Therefore, the following claims are incorporated into the detailed description here, where each claim may be an independent separate example. Although each claim may be an independent separate example, it should be noted that although the dependent claims in the claims refer to specific combinations with one or more other claims, other examples also include combinations of dependent claims with the subject matter of each other dependent claim, or include combinations of each feature with other dependent or independent claims. These combinations should be included unless there is a statement that a specific combination is not intended to be included. In addition, it is also intended to include a combination of the features of a claim with any other independent claim, even if the claim is not directly subordinate to the independent claim.

[0191] Although specific embodiments have been introduced and described herein, it is apparent to those skilled in the art that various alternative and / or equivalent embodiments may replace the embodiments specifically disclosed and described therein without departing from the subject matter of the present application. The present application text is intended to cover all adjustments and variations of the specific embodiments described and discussed herein. Therefore, the subject matter of the present application is limited only by the language of the claims and their equivalent embodiments.

Claims

1. A grinding dental product (50) comprising: A coated grinding tool (10), wherein the coated grinding tool (10) comprises: a carrier (12), the carrier (12) having a carrier material; and A ground surface coating (14) on a surface region (12-A) of the carrier (12), wherein: The grinding surface coating (14) comprises grinding functional particles (16) and a thermoplastic adhesive (18), wherein the thermoplastic adhesive (18) is used to firmly adhere at least a portion of the grinding functional particles (16) to the carrier material, wherein at least a portion of the grinding functional particles (16) on the surface area (12-A) of the carrier (12) is partially embedded in the carrier material and connected to the carrier material, wherein at least a portion of the abrasive functional particles (16) on the surface region (12-A) of the carrier (12) is also partially embedded in the thermoplastic adhesive (18), wherein the thermoplastic adhesive (18) is connected to the abrasive functional particles (16) and the carrier material, wherein the carrier (12) comprises a foam material as the carrier material, and wherein the grinding surface coating (14) is arranged on a surface area (12-A) of the foam material, and Therein, the foam material is designed to accommodate a cleaning fluid, wherein the discharge of the cleaning fluid during application can be adjusted based on the porosity of the foam material and the viscosity of the cleaning fluid.

2. The abrasive dental product (50) according to claim 1, wherein: The foam material is open-cell and elastically deformable.

3. The abrasive dental product (50) according to claim 1, wherein: The carrier (12) has a support structure (12-1) on which the carrier material is arranged, wherein the carrier material is mechanically fastened to the support structure (12-1) and surrounds the support structure (12-1) in places or in a cap-like manner.

4. The abrasive dental product (50) according to claim 1, wherein: The coated grinding tool (10) is designed as a cleaning grinding pad having a flat grinding surface or an outwardly curved (convex) grinding surface.

5. The abrasive dental product (50) according to claim 1, wherein: The abrasive dental product (50) is a dental cleaning product, wherein the coated abrasive tool (10) is arranged as a cleaning abrasive pad in the dental cleaning product.

6. The abrasive dental product (50) according to claim 5, wherein: The dental cleaning product is a toothbrush head of an electric or manual toothbrush, wherein the coated abrasive tool (10) is arranged on the toothbrush head as a cleaning abrasive pad.

7. The abrasive dental product (50) according to claim 6, wherein: The toothbrush head has the cleaning abrasive pad and also has cleaning bristles arranged to be laterally adjacent to the cleaning abrasive pad or to laterally surround the cleaning abrasive pad.

8. The abrasive dental product (50) according to claim 6, wherein: The carrier (12) has a support structure (12-1), the carrier material is arranged on the support structure, and the cleaning and grinding pad is arranged on the support structure in a replaceable or fixed manner.

9. The abrasive dental product (50) according to claim 1, wherein: The abrasive functional particles (16) are made of thermoplastic material.

10. The abrasive dental product (50) according to claim 9, wherein: The thermoplastic material of the abrasive functional particles (16) is harder than the thermoplastic binder (18).

11. The abrasive dental product (50) according to claim 1, wherein: The grinding surface coating (14) has an additional material in the form of nanoparticles or microparticles having an antibacterial and / or antiviral effect.

12. The abrasive dental product (50) according to claim 1, wherein: The dental cleaning product (50) is configured as a dental polisher, a dental drill attachment having a polishing surface and / or a smooth surface, or a dental polishing rod.

13. A dental cleaning product (50) in the form of a toothbrush head for an electric or manual toothbrush, comprising: A coated grinding tool (10), wherein the coated grinding tool (10) comprises: a carrier (12), the carrier (12) having a carrier material; and A ground surface coating (14) on a surface region (12-A) of the carrier (12), wherein: The grinding surface coating (14) comprises grinding functional particles (16) and a thermoplastic adhesive (18), wherein the thermoplastic adhesive (18) is used to firmly adhere at least a portion of the grinding functional particles (16) to the carrier material, wherein at least a portion of the grinding functional particles (16) on the surface area (12-A) of the carrier (12) is partially embedded in the carrier material and connected to the carrier material, wherein at least a portion of the abrasive functional particles (16) on the surface region (12-A) of the carrier (12) is also partially embedded in the thermoplastic adhesive (18), wherein the thermoplastic adhesive (18) is connected to the abrasive functional particles (16) and the carrier material, The coated grinding tool (10) is arranged on the toothbrush head as a cleaning grinding pad. wherein the carrier (12) has a foam material as the carrier material, wherein the grinding surface coating (14) is arranged on a surface area (12-A) of the foam material, and The toothbrush head has the cleaning abrasive pad and also has cleaning bristles, and the cleaning bristles are arranged to be laterally adjacent to the cleaning abrasive pad or to laterally surround the cleaning abrasive pad.

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