CN116600939A - Abrasive material, accessories for tools containing such abrasive material, and processing methods for producing such abrasive material - Google Patents

Abstract

The invention relates to an abrasive material, characterized in that the abrasive material (1) comprises a double-layered fabric (2) with attachment elements (3), wherein the attachment elements (3) are sheared in the middle to form hairs (4) or fibers (4) on a first side (5) of the abrasive material (1), wherein the hairs (4) are subjected to a post-treatment such that the shape of the hairs (4) is permanently altered, and wherein the hairs (4) are provided with abrasive particles (8).

Description

Abrasive materials, accessories for tools containing such abrasive materials and the manufacture of such Processing method of grinding material

technical field

The invention relates to an abrasive material and an accessory for a tool comprising such an abrasive material.

Background technique

Abrasive materials are known for cleaning and/or polishing floors, especially stone floors, steel objects, wooden surfaces and other elements.

These abrasive materials are often incorporated into cleaning pads, buffing pads, polishing pads or simply referred to as "pads". These elements are denoted herein as accessories of the instrument.

Known abrasive materials comprise interconnected but nonwoven fibers with resin and dispersed abrasive particles within the fibers.

Most of these known abrasive materials are manufactured using felting. Here, the fibers are hooked together or connected at the respective crossing points.

This often results in a layered cellular structure.

Attachments to tools containing such abrasive materials often involve three-dimensional elements, often formed as thin layers but often with a thickness.

These three-dimensional elements are often provided with at least one ground or polished surface, often referred to herein as a horizontal surface.

The level arises from the orientation of these structures in the pad when the pad is placed on a horizontal surface.

As mentioned, the nonwoven structure of the fibers results in a layered cell structure, and in the above context these layered cell structures are also referred to as horizontal cells.

A disadvantage of these well-known abrasive materials is that they tend to clog or clog.

Residues released during the cleaning or polishing process fill the pores of the material, with the adverse effect that these residues are deposited on the aforementioned grinding or polishing surfaces, i.e. on surfaces that come into contact with the surface to be ground, polished or cleaned place.

Sometimes, residue builds up on the surface and thus leads to an uneven surface. This happens, for example, when sanding drywall.

Other sanding materials are made of paper, resin, and sanding grains.

WO 96/07509 describes an abrasive material based on a flat-woven carpet with rings provided with abrasive particles. A variant also shows a flat-woven carpet with short straight bristles equipped with abrasive particles.

Contents of the invention

Accordingly, the present invention aims to provide a solution to one or more of the above-mentioned disadvantages or possibly other disadvantages.

This relates to the invention of an abrasive material comprising a double layer of fabric with wire connectors cut in the middle to form hairs or fibers on a first side of the abrasive material, wherein the hairs After treatment, the shape of the hairs is permanently changed and the hairs are equipped with abrasive particles.

As explained further herein, the bilayer tissue is characterized in that the wires 3 forming the connectors in the bilayer tissue are connected to the layers of the bilayer tissue by W-shaped connections. Thus, the abrasive material is characterized in that the wire is connected to the first side 5 and the opposite second side 9) of the abrasive material by a W-shaped connection

The post-treatment in question may be a thermal treatment, whereby the shape of the hairs is permanently changed by heat or chemical treatment using chemicals that produce a similar effect. Such treatments are known in the artificial fur industry.

Post-processing may also involve relaxation of the fibers from which the wire connections are made. This occurs, for example, when using a multi-fiber composite wire made of a rigid plastic such as nylon. The fibers in this composite wire are subjected to torsional tension released when the composite wire is sheared, so that the constituent fibers are completely or partially separated and spatially open similar to an umbel (umbel) of a plant.

In addition to the aforementioned W-shaped connection for connecting the wire to the two sides of the abrasive material, the preparation from the sheared double-layer fabric also ensures that the wire stands upright with respect to these sides. Provides a configuration that is distinctly different from the layered cellular structures described above that we obtained based on the felting method. As explained in more detail, this vertical orientation of the wires makes a difference in the functionality of the abrasive material obtained using the methods described herein.

Abrasive particles mentioned are for example, but not limited to, silicon carbide, diamond, cerium oxide, quartz, aluminum oxide or the like or a combination of two or more of the aforementioned materials.

The application is carried out in the machine by adding the desired abrasive particles. These abrasive particles are injected into the hairs at the correct consistency.

The above-mentioned first side (5) is also referred to as the abrasive surface of the abrasive material.

Changes in the shape of the fibers (also known as hairs) due to the aforementioned thermal post-treatment or due to relaxation of torsional tension in the composite wire contribute to the elasticity of these fibers. This means that the fibers have some elasticity. As a result, the fibers will be able to exert forces on each other, whereby the fibers extend spatially in different directions without losing their main upright orientation on the front of the sanding surface.

During the cleaning, sanding or polishing of surfaces, the elasticity and different orientation of the hairs will allow the penetration of one hair or the other, allowing uneven surfaces to be cleaned, sanded or polished without loss surface texture.

In other words, since the fibers extend in multiple directions in upright spaces on the surface of the sanding surface and due to the transverse (perpendicular) orientation of some fibers on the surface to be cleaned or polished (also referred to as "vertical" hairlike objects or fibers) so the fibers will be capable of deep cleaning, polishing or sanding. As indicated above, the orientation of the fibers in the upright space on the front of the sanding surface can be compared to the space occupied by the lateral axis in an umbel (umbel) of a plant.

Thus, the name "vertical" derives from the orientation of these hairs on the front of the sanding surface in the pad when the pad is placed on a horizontal surface.

The hairs preferably have a curly shape, a circular spiral shape, an angular spiral shape or a zigzag shape.

As a result of this design, these vertical hairs or fibers exhibit elastic properties or exhibit the necessary flexibility.

Preferably, the length of the hairs is between three millimeters and eighty millimeters.

Such a long bristle length ensures that the abrasive material can be cleaned even deeper, ie a deeper sanding, polishing or cleaning effect is obtained in said abrasive material. For example, lint may penetrate into or clean wood grain and sand.

It should be noted that the elastic properties of the hairs are crucial for good function.

Preferably, the connecting elements of the double fabric are made of heat-resistant material.

This means that the aforementioned fibers or wools are made of this heat-resistant material.

The vertical hairs or fibers are preferably made of a heat resistant plastic, such as Nylon 6,6, which is resistant to heat up to 320°C, with a melting point of 250°C under pressure.

Nylon 6,6 exists in different masses determined by the monomer and its repeating units from 2000 to 3000 units, where 2000 is rigid and 3000 is flexible. This is important for programming the basic organization to obtain suitable end products for various applications and fields of application. In a preferred form, the wire is a multifilament composite wire, also known as bulk continuous filament (BCF) wire. More specifically, the BCF wire is made of polyamide fibers, such as Nylon 6 and/or Nylon 6,6. An example of such a BCF wire is described in detail in European patent EP 3497272, the entire content of which is incorporated herein by reference. In a preferred form, the wire is a BCF wire consisting of a plurality of nylon 6,6 fibers, more specifically a BCF wire consisting of 8 nylon 6,6 fibers.

In addition to the features described above with respect to the connection method and orientation of the wires, the method of production from a double braid has additional advantages. It allows the wires to be placed on the sanding surface in a pattern, for example grouped in rows, hereinafter also referred to as brush rows.

Preferably, the two layers of tissue are joined such that after intermediate shearing of the two layers of this tissue, the bristles are grouped into brush rows.

The spaces between brush rows are also called rills.

Set the distance between open rills according to the application.

The pattern can vary depending on the application and can range from a full dense weave to any combination of openings or rills (ie, areas where hairs are missed). The number of hairs per square centimeter and their combined length are also decisive in this claim and determine the application and field of application.

One advantage of this is that particles or residues that become loose during the cleaning, polishing or sanding process can be removed via the rills as they are pushed out by centrifugal force. The particles or residues can then be sucked away by the machine.

In other words, these particles do not accumulate between the surface being cleaned, polished or sanded and the abrasive material.

Preferably, the hairs are provided with a binder to attach the abrasive particles to the hairs.

For example, the binder is a resin, a resin compound, a phenolic resin, a compound of a phenolic resin, a polyurethane, an adhesive or the like, said binder may be natural or chemical, or a combination or compound thereof.

In a so-called sprayer, the aforementioned abrasive particles are mixed with a binder and sprayed to the wool with a suitable consistency.

The base fabric can be produced in different ways.

For example, a two-ply link fabric cut in the middle is joined with extra loop yarn as weft.

This loop yarn is used to form a Velcro layer. After the weaving process, the semi-finished product is dried under an infrared table with a whipped coating (shaving foam), leaving the loops facing up to create the Velcro effect.

Alternatively, a tufting method is used whereby, after tufting, the Velcro weave is laminated or burned on the second side (also called the back) of the abrasive material.

In another embodiment, a layer 10 of a nonwoven, knitted textile or the like is applied on the second side 9 of the abrasive material.

This layer of nonwoven, knitted textile or the like is used to attach the abrasive material to the tool. To this end, the tool will comprise a holder, also called a pad holder, to which the abrasive material can be attached. The shape of the pad support also affects the shape of the abrasive material, such as the disc shape for a disc shaped pad support or the rectangular shape for attachment to a cylindrical pad support (also known as a roller brush). In a particular embodiment, the pad holder will be disc-shaped and will be equipped with shackle-type hooks on both sides to enable wrap-around attachment of abrasive material around the pad holder (see Figures 7 and 8). With such wrapped pad holders, there is a better range of abrasive material in the corners and edges of the object/surface to be treated. For wrapping of pad holders, the grinding or polishing surface of the abrasive material may contain one or more cutouts. These cutouts are preferably configured to allow tight attachment of abrasive material on the pad support, for example in the form of rosette cutouts.

Another advantage of this nonwoven layer, knitted textile layer or similar layer 10 is that it also acts as a membrane, preventing the aforementioned adhesive from sinking to the bottom and preventing the loop from losing its function of attaching to the Velcro hooks.

As mentioned above, the erect orientation of the hairs is understood to mean that they are spatially aligned with the umbel (umbel) of the plant. If we continue the analogy, we find that in this inflorescence the lateral axis is mainly at an angle between 45° and 135° to the main axis or stem from which it diverges. Also, in the abrasive material according to the invention, the hairs will preferably be oriented mainly at an angle between 45° and 135° relative to the aforementioned first side or abrasive surface of the abrasive material.

The aforementioned portion is preferably at least 15%, preferably at least 25% or at least 35% of the hair.

The abrasive material can be applied in a variety of ways.

The invention also relates to an accessory for a tool comprising an abrasive material according to the invention, wherein the accessory has a three-dimensional design and wherein the accessory relates to an abrasive brush pad, cleaning pad, sanding pad, polishing pad, roller brush or similar, the accessory is equipped with There are ground or polished surfaces as described herein.

With regard to the composition of the abrasive material according to the invention, the aforementioned grinding or polishing surface is often referred to herein as a horizontal surface.

According to a preferred embodiment, the attachment of the tool containing such abrasive material is an abrasive roller brush, wherein the diameter is determined by the tube rather than by the length of the bristles.

According to a preferred embodiment, the accessory to the tool containing such abrasive material is an abrasive sanding pad for cleaning floors made of stone, plastic, wood, metal or other components.

According to a preferred embodiment, the accessory of the tool containing such abrasive material is an abrasive roller brush for cleaning floors made of stone, plastic, wood, metal or other components.

Alternatively, although the attachment is an abrasive sanding pad or an abrasive roller brush, the attachment can also be used to abrade surfaces for the purpose of removing material from stone, plastic, wood, metal or other components.

The present invention also relates to a method of manufacturing abrasive materials, said method comprising the steps of:

A provides a double-layer fabric with connectors;

B cutting the connecting piece of double-layer fabric to form hairs or fibers on the first side of the abrasive material;

C treating the hairs so that the shape of the hairs changes;

D Applying abrasive particles to the hair.

For example, the above-mentioned connecting piece may be a so-called W-shaped connecting piece.

An advantage of this method is that an abrasive material with hairs in a predominantly upright orientation is produced according to the invention. As mentioned above, this preparation method not only provides the aforementioned orientations, but also allows the placement of filaments in various patterns (including the orientation of brush rows with open rills) as well as variable densities (number of filaments per surface). Sand the surface.

The treatment of step C may be heat treatment as mentioned above or chemical treatment using chemicals.

Preferably, the procedure following step C above includes the additional step of applying a layer of nonwoven, knitted textile or the like on the second side of the abrasive material.

An advantage of this layer is that this layer, when incorporated in an accessory, can be used to attach the abrasive material to the tool by the Velcro principle.

Preferably, the progression of step D above includes the additional step of applying a binder to the hairs to attach the abrasive particles to the hairs.

With the help of this binder, the abrasive grains adhere well to the hairs or fibers.

In this case, the aforementioned nonwoven layer or knitted textile layer has the additional advantage that the binder (for example resin or other adhesive) is woven by the nonwoven layer or knitted textile as it passes through the abrasive material. Layers prevent.

In another embodiment, the process may comprise a further step E in which the ground material obtained after step D is thermally compressed. By thermally compressing the abrasive material, the wire shortens and the abrasive material acquires greater grinding power without losing the aforementioned advantages associated with the upright orientation of the wire.

Description of drawings

In order to better demonstrate the characteristics of the invention, some preferred variants of abrasive material according to the invention, accessories for instruments containing such abrasive material and methods of manufacturing such abrasive material are described herein with reference to the accompanying drawings, with In the picture:

Fig. 1 schematically represents the cross-section according to the grinding material of the present invention;

Figures 2 to 6 show successive steps of the method according to the invention;

Figure 7 shows an accessory according to the invention;

Figure 8 shows an alternative to Figure 7; and

Figure 9 schematically represents a cross-section of an abrasive material according to the invention.

Detailed ways

Figure 1 schematically shows a cross-section of an abrasive material 1 according to the invention.

The abrasive material comprises one half of a double layer fabric 2 with a link 3 sheared in the middle as shown in FIG. 2 . In the example shown, this connector 3 is a so-called W-shaped connector 3 passing through the first side 5 and the opposite second side 9 of each layer constituting the double fabric.

Thus, the connector 3 is a wire that is braided or stitched through the two layers of the double layer fabric 2 (top and bottom layers in FIG. 2 ) and connected to the first layer of abrasive material by a W-shaped connector. side 5 and an opposite second side 9 .

The connector 3 of the double fabric 2 (more specifically the wire 3 from which this connector 3 is made) is in this case made of a heat-resistant material, but not necessarily of a heat-resistant material. In preferred forms, the wire is a composite wire comprising a plurality of hairs or fibers.

Hairs 4 or fibers 4 are formed on the first side 5 of the abrasive material 1 by shearing the connecting element 3 . In this embodiment where the wire is constructed, the fibers will be spatially open after shearing, as shown in FIG. 9 .

The fibers 4 are preferably grouped in so-called brush rows 6 . The open spaces 7 between these brush rows 6 are also referred to as rills 7 .

The fibers 4 or hairs 4 thus produced have been treated so that their shape is permanently changed.

In this case, the shape of the fibers 4 is a crimped shape, but may also be a circular spiral shape, an angular spiral shape, a zigzag shape or the like.

The length L of the bristles 4 is in this case five millimeters, but it can also be ten, fifteen, thirty or for example fifty millimeters. Preferably, the length L of the hairs 4 is between three millimeters and eighty millimeters.

According to the invention, the hairs 4 have abrasive particles 8 .

In this case, the hairs 4 have an adhesive to attach the abrasive particles 8 to the hairs 4 . The adhesive is not shown in the figure.

Although in Fig. 1 all hairs 4 are shown perpendicular to the first side 5 of the abrasive material 1, it must be taken into account that this is only a schematic representation. As mentioned above, this upright orientation of the hairs means that they correspond spatially to the umbel (umbel) inflorescence of the plant as shown in FIG. 9 .

In fact, not all hairs 4 are oriented perpendicular to the first side 5 .

Preferably, at least a portion of the hairs 4 are oriented mainly at an angle between 45° and 135° relative to said first side 5 of the abrasive material 1 .

This property can be obtained by a post-treatment of the wool 4 or fibers 4, including shearing of the composite wire, wherein the post-treatment also involves relaxation of the fibers making the wire connection. This results in a straightening of the hairs or fibers similar to, for example, the umbels of plants as shown in FIG. 9 .

The aforementioned portion is preferably at least 15%, or better at least 25% or at least 35%, of the uprightly oriented hairs 4 on the front of the first side 5 or on the grinding surface of the abrasive material.

In this case, but not necessarily for the invention, the second side 9 of the abrasive material 1 is provided with a nonwoven layer 10 . The nonwoven layer may also be a textile layer or the like.

The manufacturing method of the abrasive material 1 is very simple, as follows.

Figures 2 to 6 show successive steps.

Start with a double layer fabric 2 with connectors 3 . In this case, this connection is a W-shaped connection which may originate from the sewing of the connection 3 .

In this case, as already mentioned, the connecting piece 3 is made of a heat-resistant material.

As shown schematically in FIG. 2 , the joints of the bilayer tissue 2 are cut.

This forms hairs 4 on the first side 5 .

In a possible next step, as shown in FIG. 3 , the connection piece 3 is fixed. For example, this can be done by suturing two layers of tissue2.

FIG. 4 shows a next step in which the hairs 4 are treated so that the shape of the hairs 4 is changed.

The shape of the hairs 4 is curly after the treatment. This gives the hairs 4 elasticity.

The above-mentioned treatment may be a heat treatment or a chemical treatment in which the hairs 4 are permanently deformed.

In another embodiment, the wire 3 is made of a composite wire having a plurality of fibers composed of a rigid plastic such as nylon. The fibers in this composite wire are subjected to the torsional tension released when the composite wire is sheared, so that the constituent fibers are completely or partially separated and open spatially like an umbel (umbel) of a plant. This relaxation step replaces or forms part of the thermal or chemical treatment described above and results in a material as shown in FIG. 9 .

The next step shown in FIG. 5 is an optional additional step in which a nonwoven layer 10 (but this could also be a textile layer or the like) is applied to the second side 9 of the abrasive material 1 .

Then, in an optional step not shown in the figures, adhesive is applied to the hairs 4 . This adhesive will allow the abrasive particles 8 to be attached to the hairs 4 .

The binder is, for example, resin.

The nonwoven layer 10 from the previous step will prevent resin from passing through the abrasive material 1 .

FIG. 6 shows the final step in which abrasive particles 8 are applied to the bristles 4 .

These abrasive grains 8 are, for example, diamond grains.

In this way, the abrasive material 1 is manufactured and ready for use.

7 and 8 show possible applications using the abrasive material 1 .

Figure 7 shows an attachment 11 for a tool 12 containing abrasive material 1 according to the invention.

The attachment 11 has a three-dimensional design and in this case is a pad 11 , for example a brush pad, cleaning pad, sanding pad or polishing pad.

The pad 11 has a disc shape and is covered with abrasive material 1 .

To this end, the pad 11 is equipped with, for example, Velcro hooks which can attach the nonwoven 10 on the second side 9 of the abrasive material 1 so that the abrasive material 1 can be attached to the pad 11 .

By applying an abrasive material 1 , the pad 11 has a grinding or polishing surface 13 .

The tool 12 on which the pad 11 is applied will allow the pad 11 to rotate at high speed.

Tool 12 may then be placed on the surface to be sanded, brushed, cleaned or polished.

The elastic bristles 4 will be able to sand, brush, clean or polish at the depth of the surface. Thereby, particles removed from the surface will be removed via the rills 7 and will not accumulate between the surface and the polishing surface 13 of the pad 11 .

FIG. 8 shows a variant of the accessory 11 according to FIG. 7 , in this case the shape of the pad 11 is changed.

After all, it is possible to give the pad 11 a specific shape, which will allow corners or special shapes to be sanded, brushed, cleaned or polished.

Special non-planar surfaces can also be treated by giving the pad 11 a complementary shape according to the surface to be treated.

The grinding and polishing surface 13 due to its shape will exert an equal force over the entire surface so that the treatment will be uniform over the entire surface.

The invention is in no way restricted to the embodiments described as examples and shown in the drawings, but the abrasive material according to the invention, for containing such abrasive material, can be realized according to different variants without going beyond the scope of the present invention Accessories for instruments and methods of making such abrasive materials.

Experimental comparison

The characteristics of the abrasive according to the invention are related to the erect orientation of the hairs, in particular the orientation of the umbels (umbels) resembling plants.

A number of tests compared the abrasive material according to the invention (Ecoforce Green) with classic nylon abrasive brushes with bristles but without abrasives and with non-abrasive brushes with horizontal cell structure and with silica, diamond and aluminum oxide as abrasives. The effect of weaving abrasive materials.

1. Wet cleaning of wooden surfaces

2. Wet cleaning of linoleum surface

3. Wet cleaning of ceramic floor tiles and joints

4. Wet cleaning of granite surfaces

The above experiments show that the abrasive material according to the present invention can add value to various applications of typical nonwovens and bristles in use today. We have found that due to the standing fiber form, the elasticity of the fibers does allow for better deep penetration and more effective cleaning without depleting chemicals like normal waste deposits. Lightly abrasive particles applied to the fibers help loosen dirt from the material to be cleaned.

The shape, structure and upright orientation of the bristles provide the necessary elasticity, which we can also call brushing force, when we examine the function and elasticity more closely, we see that due to the spatial orientation of the fiber ends, not only Strength, but also in the lower section of the Ecoforce pad, which is in contrast to the classic sanding brush and non-woven cell structure, which is only at the front, on the surface of its surface. These forces are generated at the highest point.

The tests also showed that, unlike other tested materials, the elasticity ensures that the structure of the surface is not affected, only the dirt comes off.

Tests also showed that the length and elasticity of the bristles ensured no or limited sanding, even with coarse particles (data not shown). To achieve the abrasive effect, the fibers must be shortened.

Ecoforce mats thus overlap with current operations for nonwoven and brush mats and have unique properties that produce a completely different end result without damaging the surface.

Claims (16)

1. Abrasive material, characterized in that the abrasive material (1) comprises hairs (4) or fibers (4) on a first side (5) of the abrasive material, wherein the hairs are formed by shearing a thread joint (3) of a double-layer fabric (2), wherein the thread (3) is connected to the first side (5) and an opposite second side (9) of the abrasive material by a W-shaped connection, wherein the hairs (4) are subjected to a post-treatment such that the shape of the hairs (4) is permanently altered, and wherein the hairs (4) are provided with abrasive particles (8).

2. The abrasive material of claim 1, wherein the wire is a composite wire having a plurality of fibers; in particular composite wires with fibres composed of a hard plastic such as nylon.

3. Abrasive material according to claim 1, characterized in that the bristles (4) are provided with a binder to attach the abrasive particles (8) to the bristles.

4. Abrasive material according to claim 1 or 2, characterized in that the bristles (4) have a curled shape, a rounded spiral shape, an angular spiral shape or a Z-shape.

5. Abrasive material according to claim 1 or 2, characterized in that the bristles (4) extend in a plurality of directions in an upstanding space on the first side (5).

6. Abrasive material according to one of the preceding claims, characterized in that at least a portion of the bristles (4) are oriented at an angle of between 45 ° and 135 ° compared to the first side (5) of the abrasive material (1).

7. Abrasive material according to one of the preceding claims, characterized in that a nonwoven layer (10), a textile layer or the like is applied on the second side (9) of the abrasive material (1).

8. Abrasive material according to one of the preceding claims, characterized in that the length (L) of the bristles (4) is between three and eighty millimeters.

9. Abrasive material according to one of the preceding claims, characterized in that the double layer fabric (2) is provided with weft or terry yarns.

10. Abrasive material according to one of the preceding claims, characterized in that the connection (3) of the double layer fabric (2) to the connection piece (3) is such that the bristles (4) are grouped in brush rows (6) after intermediate shearing of the double layer fabric (2).

11. Abrasive material according to one of the preceding claims, characterized in that the connection piece (3) of the double-layer fabric (2) is made of a heat-resistant material.

12. A process for producing an abrasive material, characterized by the steps of:

A. providing a double layer fabric (2) with a connector (3);

B. shearing the attachment (3) of the double layer fabric (2) to form a fleece (4) or fibers (4) on the first side (5) of the abrasive material (1);

C. -treating the wool (4) so as to change the shape of said wool;

D. abrasive particles (8) are applied to the fleece (4).

13. The process of claim 12, wherein after step C, the process comprises the additional step of: a nonwoven layer (10), a textile layer or the like is applied to the second side (9) of the abrasive material (1).

14. The method of processing according to claim 12 or 13, characterized in that for the above step D, the method of processing comprises the additional step of: a binder is applied to the bristles (4) to attach the abrasive particles (8) to the bristles (4).

15. The processing method according to one of the preceding claims 12 to 14, characterized in that it comprises a further step E in which the abrasive material obtained after step D is thermally compressed.

16. An accessory of a tool (12) containing an abrasive material according to one of the preceding claims 1 to 11, characterized in that the accessory (11) has a three-dimensional design and is an abrasive brush pad, a cleaning pad, a sanding pad, a polishing pad, a roller brush or the like equipped with a sanding or polishing surface (13).