DE102019127660A1 - Press tool and method of making a press tool - Google Patents

Abstract

The invention relates to a pressing tool (1) for producing a workpiece. The pressing tool (1) has a pressing surface (2, 52) which has a structure of elevations (4) and depressions (3), a wear layer (11) which at least partially forms the pressing surface (2, 52) and has an optical property, an indicator layer (12) which is arranged below the wear layer (11) and in which particles (18) having optical properties are embedded, so that the indicator layer (12) has a corresponding optical property that differs from the optical property of the wear layer (11 ) differs.

Description

The invention relates to a pressing tool with a pressing surface and a method for producing the pressing tool.

Pressing tools, e.g. in the form of press plates, endless belts or embossing rollers, are used in the woodworking industry, for example, to manufacture furniture, laminates or panels, i.e. general workpieces. The workpieces are pressed with the pressing surface of the pressing tool, so that the workpieces have surfaces corresponding to the pressing surface.

The WO 2009/062488 A2 discloses a press plate with a structured press surface. The structured pressing surface comprises a structure that has a mountain-like surface with valleys and heights, and a full-surface chrome layer. A workpiece in the form of a material plate with a structured surface can be produced by means of the pressing surface.

The WO 2008/120058 A1 discloses a pressing tool, the pressing surface of which is formed by a layer consisting of a metal matrix with mineral or ceramic particles embedded therein.

The pressing surface is subject to wear, so that the layer forming the pressing surface wears off over time.

The object of the invention is to specify a pressing tool with a structured pressing surface in which wear on the pressing tool can be detected in a relatively simple manner.

The object of the invention is achieved by a press tool for producing a workpiece, having a press surface which has a structure of elevations and depressions, a wear layer at least partially forming the press surface with an optical property, and an indicator layer which is arranged below the wear layer and in the particles having optical properties are embedded, so that the indicator layer has a corresponding optical property that differs from the optical property of the wear layer.

• - Auftragen der Indikatorschicht auf eine Grundstruktur unter Zugabe der die optischen Eigenschaften aufweisenden Partikel,
• - Auftragen der die Pressoberfläche zumindest teilweise bildenden Indikatorschicht
• - Auftragen der Verschleißschicht auf die Indikatorschicht.

Another aspect of the invention is a method for producing the press tool according to the invention, comprising the following method steps:

• - Application of the indicator layer to a basic structure with the addition of the particles exhibiting the optical properties,
• - Application of the indicator layer which at least partially forms the pressing surface
• - Application of the wear layer on the indicator layer.

The pressing tool according to the invention is, for example, an endless belt, an embossing roller or preferably a pressing plate and comprises the pressing surface, which has a structure of elevations and depressions. The pressing surface is thus a structured pressing surface with the elevations and the depressions. This gives the workpiece a structured surface corresponding to the structure of the structured press surface.

The workpiece is, for example, a material plate. This includes e.g. a carrier, e.g. an MDF board or a chipboard, which is pressed with a resin or plastic coated carrier (e.g. paper) by means of the pressing tool. The material plate can also be a so-called luxurious vinyl tile (LVT).

The pressing surface of the pressing tool according to the invention is at least partially formed by the wear layer. The wear layer can be formed over the entire surface or partially.

The pressing tool comprises the indicator layer, which is arranged below the wear layer. The indicator layer is arranged in particular below the wear layer in such a way that it is arranged directly below the wear layer or that the wear layer rests against the indicator layer.

The pressing tool comprises, in particular, a basic structure on which the indicator layer is arranged.

The indicator layer is e.g. an indicator layer made of metal or plastic or is a lacquer indicator layer.

The wear layer is e.g. a wear layer made of metal or plastic, or is a paint indicator layer.

The plastic preferably comprises polyetheretherketone or consists of polyetheretherketone.

The basic structure is in particular made of metal, such as steel, and the indicator layer and the wear layer are, for example, made of metal, that is to say electrically conductive, which makes it possible to form the wear layer to be applied to the indicator layer by means of a galvanic or chemical process. The structure of the basic structure essentially corresponds to the structure of the press surface.

In the case of an indicator layer made of plastic or the lacquer indicator layer, this is preferably applied to the basic structure by means of a printer. Such a production is relatively environmentally friendly.

In the case of a wear layer made of plastic or the lacquer wear layer, this is preferably applied to the indicator layer by means of a printer. Such a production is relatively environmentally friendly.

The indicator layer is provided to indicate wear of the wear layer arranged on the indicator layer, that is to say in particular also wear of the pressing surface. The indicator layer therefore has a different optical property than the wear layer. If the wear layer is at least partially so heavily worn that it has been completely removed at least in some areas, the indicator layer is visible in these areas. Because of the different optical properties, this is then particularly visible to the human eye, so that a person can recognize in a relatively simple manner when the pressing tool is too worn.

The optical properties of the indicator layer are achieved by means of the particles embedded in it. The optical properties are e.g. a color or a fluorescence. The particles of the indicator layer are therefore z. B. color particles, so that the indicator layer has a corresponding color, and / or fluorescent particles, so that the indicator layer has fluorescent properties.

The particles of the indicator layer in particular have a size in the micrometer or nanometer range.

In order to increase the environmental compatibility, the indicator layer is preferably an indicator layer made of chromium-free metal, preferably an indicator layer made of nickel.

The wear layer made of metal is also preferably chromium-free, for example made of nickel.

In order to increase the wear resistance of the wear layer arranged on the indicator layer, mineral particles can be embedded in it.

Minerals are mostly inorganic, homogeneous, mostly crystallized substances that occur in the earth's crust. The majority of the minerals known today and recognized as independently by the International Mineralogical Association are inorganic.

In particular, the mineral particles have a Mohs hardness of at least 8. The mineral particles can have a size in the nanometer or micrometer range. As a result, the mineral particles can be embedded relatively homogeneously in the wear layer, as a result of which the wear layer has a relatively homogeneous hardness over its entire surface. The size of the individual mineral particles can be different or essentially the same.

The mineral particles preferably have a volume fraction of at least 50% based on the volume of the wearing layer with mineral particles embedded therein. The desired degree of wear of the wearing layer can be set on the basis of the size, the volume fraction and the type of minerals in the mineral particles.

The mineral particles are preferably diamond particles or industrial diamond particles. However, the minerals silicon carbide, boron nitride, boron carbide, aluminum oxide and titanium oxide in particular can also be used as mineral particles.

During the production of the workpiece, the structured pressing surface is in contact with the workpiece and is therefore subject to wear. This wear is particularly pronounced in the areas of the elevations, at least in the area of certain elevations. According to a preferred embodiment of the pressing tool, the indicator layer is a partial indicator layer which is arranged only in areas below the wear layer that are assigned to the elevations or predetermined elevations.

• - Auftragen einer Maske auf die Grundstruktur, sodass Bereiche der Grundstruktur, die den Erhebungen oder vorbestimmten Erhebungen der Pressoberfläche zugeordnet sind, von der Maske frei bleiben,
• - Auftragen der Indikatorschicht aus Metall unter Zugabe der die optischen Eigenschaften aufweisenden Partikel auf die Bereiche der Grundstruktur, die frei von der Maske sind, mittels eines galvanischen oder chemischen Verfahrens, und
• - Auftragen der die Pressoberfläche zumindest teilweise bildenden Verschleißschicht aus Metall mittels eines galvanischen oder chemischen Verfahrens.

The production of this variant of the pressing tool in the case of the indicator layer and the wear layer made of metal comprises in particular the following process steps:

• - applying a mask to the basic structure, so that areas of the basic structure that are assigned to the elevations or predetermined elevations of the press surface remain free of the mask,
• Applying the indicator layer made of metal with the addition of the particles exhibiting the optical properties to the areas of the basic structure which are free of the mask by means of a galvanic or chemical process, and
• - Application of the wear layer made of metal, which at least partially forms the pressing surface, by means of a galvanic or chemical process.

The mask and the partial indicator layer are applied in particular as a function of the image data assigned to the structure of the press surface.

The basic structure can be treated before arranging the full-surface indicator layer made of metal, e.g. to modify the structure of the basic structure. This treatment can include a mechanical treatment and / or a galvanic and / or chemical treatment of the basic structure and / or the treatment of the basic structure can take place with a laser. The treatment of the basic structure can also be a thermal treatment, e.g. tempering, in order to harden it, for example.

The structure of the press surface is particularly associated with a natural material such as wood or stone. In order to preserve the structure of the press surface, it can be provided that an original, for example a piece of wood or a stone, is scanned in order to obtain image data. These image data include, in particular, information about the structure that the structured press surface should have. The image data used for the production of the partial indicator layer can be the scanned image data or image data generated from these.

The wear layer can be a full-surface wear layer made of metal. A partial wear layer made of metal can be arranged on the full-surface wear layer made of metal. The partial wear layer made of metal and areas of the full-surface wear layer on which the partial wear layer made of metal is not arranged form the pressing surface in this case.

The full-surface wear layer and the partial wear layer made of metal are preferably produced using a galvanic or chemical process.

The full-surface wear layer made of metal and the partial wear layer made of metal each have a degree of gloss. The degrees of gloss of the full-surface wear layer made of metal and the partial wear layer made of metal preferably differ from one another, so that the surface of the workpiece produced with the pressing tool also has areas of different degrees of gloss.

• - vollflächiges Auftragen einer Metallschicht auf die Indikatorschicht, um die vollflächige Verschleißschicht aus Metall zu erhalten,
• - Auftragen einer Maske auf die vollflächige Verschleißschicht aus Metall insbesondere in Abhängigkeit von der Struktur der Pressoberfläche zugeordneten Bilddaten, sodass vorbestimmte Bereich der vollflächigen Verschleißschicht aus Metall, die die den Erhebungen oder vorbestimmten Erhebungen der Grundstruktur zugeordnet sind, von der Maske frei bleiben, und
• - Auftragen einer weiteren Metallschicht auf die vorbestimmten Bereiche der vollflächigen Verschleißschicht mittels eines galvanischen oder chemischen Verfahrens insbesondere in Abhängigkeit der Bilddaten, um die auf der vollflächigen Verschleißschicht angeordnete partielle Verschleißschicht aus Metall zu erhalten.

The method for producing this variant of the pressing tool according to the invention can have the following method steps:

• - full-surface application of a metal layer on the indicator layer in order to obtain the full-surface wear layer made of metal,
• Application of a mask to the full-area wear layer made of metal, in particular as a function of the image data assigned to the structure of the press surface, so that predetermined areas of the full-area wear layer made of metal, which are assigned to the elevations or predetermined elevations of the basic structure, remain free from the mask, and
• Application of a further metal layer to the predetermined areas of the full-surface wear layer by means of a galvanic or chemical process, in particular as a function of the image data, in order to obtain the partial metal wear layer arranged on the full-surface wear layer.

The full-surface wear layer made of metal can be treated before the partial wear layer made of metal is applied. This treatment can include a mechanical treatment and / or a galvanic and / or chemical treatment of the full-surface wear layer and / or the treatment of the full-surface wear layer can take place with a laser. The treatment of the full-surface wear layer can also be a thermal treatment, e.g. tempering of the full-surface wear layer in order to harden it, for example. If the full-surface wear layer is a full-surface wear layer made of nickel, this can have a hardness of approx. 1100 Vickers or more as a result of the thermal treatment.

The partial wear layer made of metal can also be treated. This treatment can include a mechanical treatment and / or a galvanic and / or a chemical treatment of the partial wear layer made of metal and / or the treatment of the partial wear layer made of metal can take place with a laser. The treatment of the partial wear layer made of metal can also be a thermal treatment, for example annealing of the partial wear layer made of metal, in order to increase its wear resistance.

In order to make the pressing surface more wear-resistant, further mineral particles can be embedded in the partial metal layer.

The mineral particles and the further mineral particles can have the same size, the same volume fraction based on the volume of their metal layer and / or the same type of minerals.

The material of the partial metal layer and the all-over metal layer can be the same or different.

The pressing surface can e.g. be changed by mechanical or chemical post-treatment or adapted to specific requirements.

• - Auftragen der Indikatorschicht aus Kunststoff oder der Lackindikatorschicht unter Zugabe der die optischen Eigenschaften aufweisenden Partikel auf die Bereiche der Grundstruktur mittels eines Druckers, und
• - Auftragen der die Pressoberfläche zumindest teilweise bildenden Verschleißschicht aus Kunststoff oder der Lackverschleißschicht mittels eines Druckers.

If the wearing layer is the wearing layer made of plastic or if it is a lacquer wearing layer, then in particular the indicator layer can be a partial indicator layer made of plastic or a partial lacquer indicator layer which is only arranged in areas on the basic structure which correspond to the elevations or predetermined elevations of the Press surface are assigned. The production of this variant includes in particular one

• Applying the indicator layer made of plastic or the lacquer indicator layer with the addition of the particles having the optical properties to the areas of the basic structure by means of a printer, and
• Application of the wear layer made of plastic, which at least partially forms the pressing surface, or the lacquer wear layer by means of a printer.

The partial indicator layer made of plastic or the partial lacquer indicator layer is preferably printed as a function of the image data assigned to the structure of the press surface.

• - vollflächiges Auftragen einer Kunststoffschicht auf die Indikatorschicht, um die vollflächige Verschleißschicht aus Kunststoff zu erhalten, und
• - Auftragen einer weiteren Kunststoffschicht auf die vorbestimmten Bereiche der vollflächigen Verschleißschicht aus Kunststoff mittels eines Druckers insbesondere in Abhängigkeit der Bilddaten, um die auf der vollflächigen Verschleißschicht aus Kunststoff angeordnete partielle Verschleißschicht aus Kunststoff zu erhalten.

The wear layer at least partially forming the pressing surface can be a full-surface wear layer made of plastic, on which a partial wear layer made of plastic is arranged. The full-surface wear layer made of plastic preferably has a degree of gloss and the partial wear layer made of plastic has a degree of gloss that differs from the degree of gloss of the full-surface wear layer made of plastic. The production of this variant includes in particular one

• - Full-surface application of a plastic layer on the indicator layer in order to obtain the full-surface wear layer made of plastic, and
• Application of a further plastic layer to the predetermined areas of the full-surface wear layer made of plastic by means of a printer, in particular as a function of the image data, in order to obtain the partial wear layer made of plastic arranged on the full-surface wear layer made of plastic.

The basic structure can be treated with the indicator layer before the arrangement or the coating of the basic structure, so that the lacquer indicator layer, the indicator layer made of plastic, preferably adheres better to the basic structure. This treatment can be a mechanical treatment of the basic structure, due to which, for example, the surface of the basic structure is roughened, for example, so that the lacquer indicator layer or the indicator layer made of plastic adheres better to the basic structure. The treatment of the basic structure can comprise a galvanic and / or chemical treatment of the basic structure and / or the treatment of the basic structure with a laser. Due to the handling of the basic structure, e.g. the structure of the basic structure can be refined.

The different degrees of gloss of the plastic wear layers can be achieved, for example, by hardening the plastic wear layers, e.g. by UV radiation, electron beam or laser hardening, or by exposure to different temperatures.

• - vollflächiges Auftragen einer Lackschicht auf die Indikatorschicht, um die vollflächige Lackverschleißschicht zu erhalten, und
• - ein Auftragen einer weiteren Lackschicht auf die vorbestimmten Bereiche der vollflächigen Lackverschleißschicht mittels eines Druckers in Abhängigkeit der Bilddaten, um die auf der vollflächigen Lackverschleißschicht angeordnete partielle Lackverschleißschicht zu erhalten.

The wear layer at least partially forming the press surface can be a full-surface lacquer wear layer on which a partial lacquer wear layer is arranged. In particular, the full-area lacquer wear layer can have a gloss level and the partial lacquer wear layer can have a gloss level different from the gloss level of the full-area lacquer wear layer. The production of this variant includes in particular one

• - full-surface application of a layer of lacquer on the indicator layer in order to obtain the full-surface wear layer of lacquer, and
• an application of a further lacquer layer to the predetermined areas of the full-area lacquer wear layer by means of a printer as a function of the image data in order to obtain the partial lacquer wear layer arranged on the full-area lacquer wear layer.

• 1 ein Pressblech mit einer Pressoberfläche in einer perspektivischen Darstellung,
• 2 einen Ausschnitt einer Seitenansicht des Pressblechs in geschnittener Darstellung,
• 3 ein Zwischenstadium des Pressblechs während seiner Herstellung,
• 4 ein weiteres Zwischenstadium des Pressblechs während seiner Herstellung, und
• 5 einen Ausschnitt einer alternative Ausführungsform der Pressoberfläche des Pressblechs in geschnittener Darstellung.

Exemplary embodiments of the invention are shown in the attached schematic figures. Show it:

• 1 a press plate with a press surface in a perspective view,
• 2 a section of a side view of the press plate in a sectional view,
• 3 an intermediate stage of the press sheet during its manufacture,
• 4th a further intermediate stage of the press sheet during its manufacture, and
• 5 a section of an alternative embodiment of the pressing surface of the pressing plate in a sectional view.

The 1 shows a press plate in a perspective view 1 with a press surface 2 as an example of a pressing tool and the 2 a detail of a side view of the press plate 1 in cut representation. The press surface 2 comprises a structure from the surveys 4th and depressions 3 .

The structure of the press surface 2 is in particular assigned to a natural material, in the case of the present exemplary embodiment, wood.

With the press plate 1 a workpiece, for example a material plate, for example a laminate, can be produced by pressing. After pressing, the workpiece has one of the structure of the pressing surface 2 corresponding structured surface.

The press plate 1 comprises in the case of the present exemplary embodiment a basic structure 10 , one the press surface 2 at least partially forming wear layer 11 and an indicator layer 12th .

The basic structure 10 is made of metal in the case of the present exemplary embodiment. The indicator layer 12th is on the basic structure 10 or below the wear layer 11 arranged and in the case of the present exemplary embodiment is a partial indicator layer 12th .

In the indicator layer 12th are particles 18th embedded, which have an optical property, so that the indicator layer 12th also has this optical property. The particles 18th are for example color particles, so that the indicator layer 12th has the color of these color particles. The particles 18th can be fluorescent particles, so the indicator layer 12th fluoresces. In particular, the indicator layer 12th the color particles only, the fluorescent particles only, or both types of particles 18th exhibit.

The wearing course 11 is on the indicator layer 12th arranged, ie the indicator layer 12th is between the basic structure 10 and the wearing course 11 arranged. The optical property of the wear layer 11 differs from the optical properties of the indicator layer 12th .

In the case of the present exemplary embodiment, the wear layer is 11 a full-surface wear layer 11 and forms the pressing surface 2 .

In the case of the present embodiment are in the wear layer 11 Mineral particles, in particular industrial diamond particles 13th embedded.

The wearing course 11 is, for example, made of metal, in particular made of nickel, and the indicator layer 12th is also made of metal, especially nickel.

The wearing course 11 made of metal, for example, by applying it to the indicator layer 12th made of metal with the addition of industrial diamond particles 13th manufactured by means of a galvanic or chemical process.

The wearing course 11 and / or the indicator layer 12th can also be made of plastic. The plastic layer preferably comprises polyetheretherketone. In this case, the layers of plastic can be applied, for example, by means of printing.

The wearing course 11 can be a wear lacquer layer, which is applied in particular by means of printing.

The indicator layer 12th can be an indicator lacquer layer, which is applied in particular by means of printing.

In the case of the present exemplary embodiment, the press plate comprises 1 a base support, in particular a base support plate 14th eg made of metal on which the basic structure 10 is arranged.

In the case of the present exemplary embodiment, the basic structure comprises 10 several superimposed base metal layers 15th . The base metal layers 15th are preferably made of nickel.

In the case of the present exemplary embodiment, there are in the base metal layers 15th also mineral particles, especially industrial diamond particles 16 embedded. The industrial diamond particles 16 of the base metal layers 15th can be similar to the industrial diamond particles 13th the metal layer 11 be executed.

The basic structure 10 can for example be made by placing one in the 3 shown mask 17th at least once on a base metal layer 15th depending on the structure of the structured press surface 2 associated image data is applied to cover areas, and then another base metal layer 15th with the addition of the diamond particles 15th on that of the mask 17th uncovered areas is applied. This is repeated until the basic structure 10 originated. The basic structure 10 is particularly dependent on the structure of the pressing surface 2 , ie depending on the surveys 4th and depressions 5 associated image data produced by the masks as a function of this image data 17th and the base metal layers 15th can be applied one after the other by means of the galvanic or chemical process.

On the basic structure 10 then becomes the indicator layer 12th with the addition of the particles 18th applied.

In the case of the present exemplary embodiment, the indicator layer is 12th a partial indicator layer 12th which only in areas 20th on the basic structure 10 is arranged that the surveys 4th or predetermined elevations 4th the press surface 2 assigned.

Is it the indicator layer? 12th around an indicator layer 12th made of metal, then this can be made by placing one in the 4th shown mask 40 depending on the structure of the press surface 2 assigned image data to the basic structure 10 z. B. is applied by printing, so that the areas 20th the basic structure 10 who have made the surveys 4th or predetermined elevations 4th the press surface 2 are assigned, from the mask 40 remain free. Then the indicator layer 12th with the addition of the particles exhibiting the optical properties 18th on the areas 20th the basic structure 10 that free from the mask 40 are applied by means of a galvanic or chemical process. After that, the wearing course 11 made of metal on the indicator layer 12th applied.

Is it the indicator layer? 12th around an indicator layer 12th made of plastic, this can be done by means of a printer with the addition of the particles 18th on the areas 20th the basic structure 10 be applied. Then it becomes the press surface 2 at least partially forming wear layer 11 Made of plastic by means of a printer, in particular with the addition of industrial diamond particles 18th applied.

Is it the indicator layer? 12th around an indicator lacquer layer, this can be done by means of a printer with the addition of the particles 18th on the areas 20th the basic structure 10 be applied.

Applying the indicator layer 12th preferably takes place as a function of the structure of the pressing surface 2 associated image data.

The 5 shows a section of an alternative embodiment of a press surface 52 of the press plate 1 in cut representation. This press surface 52 differs from that in the 2 shown pressing surface 2 in that the press plate 1 or the press surface 52 a partial wear layer 53 includes, in the further mineral particles, in particular further industrial diamond particles 54 are embedded. The partial wear layer 53 is on the wearing course 11 arranged so that the partial wearing course 53 and that of the partial wear layer 53 uncovered areas of the wear layer 11 the press surface 52 form.

The wearing course 11 can be done before applying the partial wear layer 53 be pretreated, for example chemically, mechanically, galvanically or by means of a laser.

The wearing course 11 and the partial wear layer 53 in particular each have a degree of gloss that differs.

Are the wearing course 11 and the partial wear layer 53 made of metal, the different degrees of gloss can then be achieved, for example by using metals with different glosses for the wear layer 11 and the other wearing layer 53 be generated. It is also possible to use the same metals which have different degrees of gloss due to different application methods.

The partial wear layer 53 made of metal with embedded further industrial diamond particles 54 is made eg by placing on the wearing course 11 made of metal in which the industrial diamond articles 13th embedded, a mask is applied e.g. by printing to predetermined area of the wear layer 11 to cover. After that, another metal layer is applied to the areas of the wear layer 11 that are not provided with the mask, with the addition of the other industrial diamond particles 54 applied by means of a galvanic or chemical process to the partial wear layer 53 with embedded further industrial diamond particles 54 to obtain.

Are the wearing layers 11 , 53 made of plastic, then the partial wear layer 53 with embedded further industrial diamond particles 54 eg made by placing on the wearing course 11 another plastic layer on the predetermined areas 20th the full-surface wear layer 11 made of plastic is applied by means of a printer, in particular as a function of the image data, in order to be able to use the full-surface wear layer 11 Partial wear layer made of plastic 53 made of plastic.

The different degrees of gloss of the plastic wear layers can be achieved, for example, by hardening the plastic wear layers, e.g. by UV radiation, electron beam or laser hardening, or by exposure to different temperatures.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2009/062488 A2 [0003]
• WO 2008/120058 A1 [0004]

Claims (14)

A pressing tool for producing a workpiece, comprising a pressing surface (2, 52) which has a structure of elevations (4) and depressions (3), a wear layer (11) which at least partially forms the pressing surface (2, 52) and has an optical property, and an indicator layer (12) which is arranged below the wear layer (11) and in which particles (18) having optical properties are embedded, so that the indicator layer (12) has a corresponding optical property that differs from the optical property of the wear layer ( 11) differs. Press tool after Claim 1 wherein the indicator layer (12) is a partial indicator layer which is only arranged in areas (20) below the wear layer (11) which are assigned to the elevations (4) or predetermined elevations (4). Press tool after Claim 1 or 2 , wherein the particles (18) have a size in the micro or nanometer range, and / or are colored particles, so that the indicator layer (12) has a corresponding color, and / or are fluorescent particles, so that the indicator layer (12) has fluorescent properties. Press tool according to one of the Claims 1 to 3 wherein the indicator layer (12) is an indicator layer made of metal, in particular made of chromium-free metal, or made of plastic, or a lacquer indicator layer. Press tool according to one of the Claims 1 to 4th wherein mineral particles (13) are embedded in the wear layer (11) at least partially forming the pressing surface (2, 52). Press tool according to one of the Claims 1 to 5 wherein the wear layer (11) at least partially forming the pressing surface (52) is a full-surface wear layer on which a partial wear layer (53) is arranged, and the full-surface wear layer (11) has a gloss level and the partial wear layer (53) has a gloss level the full-surface wear layer (11) has different degrees of gloss. Method for producing a pressing tool (1) according to one of the Claims 1 to 6th , comprising the following process steps: - application of the indicator layer (12) to a base structure (10) with the addition of the particles (18) exhibiting the optical properties, - application of the wear layer (11) at least partially forming the pressing surface (2, 52), and - Application of the wear layer (11) to the indicator layer (12). Procedure according to Claim 7 , wherein the wear layer (11) made of metal and indicator layer (12) is a partial indicator layer made of metal, which is only arranged in areas (20) on the base structure (10) which correspond to the elevations (4) or predetermined elevations (4) of the Pressing surface (2, 52) are assigned, having - application of a mask (40) to the basic structure (10), so that areas (20) of the basic structure (10) which correspond to the elevations (4) or predetermined elevations (4) of the pressing surface ( 2, 52), remain free from the mask (40), and - application of the indicator layer (12) with the addition of the particles (18) having the optical properties to the areas (20) of the basic structure (10) which are free from the mask (40), by means of a galvanic or chemical process, and application of the wear layer (11), which at least partially forms the pressing surface (2, 52), by means of a galvanic or chemical process. Method according to FIG. 8, comprising applying the mask (40) and the partial indicator layer (12) as a function of the structure of the press surface (2, 52) associated with image data. Method according to one of the Claims 7 to 9 The wear layer (11) at least partially forming the pressing surface (52) is a full-surface wear layer made of metal on which a partial wear layer (53) made of metal is arranged, and the full-surface wear layer (11) made of metal has a gloss level and the partial wear layer (53) made of metal has a degree of gloss different from the gloss level of the full-surface wear layer (11) made of metal, having - full-surface application of a metal layer to the indicator layer (12) in order to obtain the full-surface wear layer (11) made of metal, - application of a mask the full-surface wear layer (11) made of metal depending on the structure of the pressing surface (52) associated with image data, so that predetermined areas of the full-surface wear layer made of metal (11), in particular the elevations (4) or predetermined elevations (4) of the pressing surface (52 ), stay clear of the mask, and - apply a r further metal layer on the predetermined areas of the full-surface wear layer made of metal (11) by means of a galvanic or chemical process depending on the image data in order to obtain the partial wear layer (53) made of metal on the full-surface wear layer made of metal (11). Procedure according to Claim 7 , wherein the wear layer (11) is made of plastic or a Paint wear layer is, and the indicator layer (12) is a partial indicator layer made of plastic or is a partial paint indicator layer, which is only arranged in areas (20) on the base structure (10) which correspond to the elevations (4) or predetermined elevations (4) of the Press surface (2, 52) are assigned, having - application of the indicator layer (12) made of plastic or the lacquer indicator layer with the addition of the optical properties having particles (18) on the areas (20) of the basic structure (10) by means of a printer, and - Application of the plastic wear layer (11), which at least partially forms the pressing surface (2, 52), or the wear layer of lacquer, by means of a printer. Method according to 11, comprising application of the image data assigned to the partial indicator layer made of plastic or the lacquer indicator layer as a function of the structure of the pressing surface (2, 52). Method according to one of the Claims 7 , 11 or 12th The wear layer (11) at least partially forming the pressing surface (52) is a full-surface wear layer made of plastic, on which a partial wear layer made of plastic is arranged, and the full-surface wear layer made of plastic has a gloss level and the partial wear layer made of plastic has a gloss level of full-surface wear layer made of plastic has different degrees of gloss, having - full-surface application of a plastic layer on the indicator layer (12) in order to obtain the full-surface wear layer made of plastic (11), and - application of a further plastic layer on the predetermined areas of the full-surface wear layer made of plastic (11 ) by means of a printer as a function of the image data in order to obtain the partial plastic layer (53) arranged on the full-surface wear layer made of plastic (11). Method according to one of the Claims 7 , 11 or 12th , wherein the wear layer (11) at least partially forming the press surface (52) is a full-surface lacquer wear layer on which a partial lacquer wear layer is arranged, and the full-surface lacquer wear layer has a gloss level and the partial lacquer wear layer has a gloss level different from the gloss level of the full-surface lacquer wear layer, having - full-surface application of a lacquer layer on the indicator layer (12) in order to obtain the full-area lacquer wear layer, and - application of a further lacquer layer to the predetermined areas of the full-area lacquer wear layer by means of a printer depending on the image data in order to obtain the partial lacquer wear layer arranged on the full-area lacquer wear layer .

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