EP3749523A2

EP3749523A2 - Method and device for rotary blind embossing of a substrate, a female die and/or a male die for use in a device, and a method for producing a female die and/or a male die

Info

Publication number: EP3749523A2
Application number: EP19702252.8A
Authority: EP
Inventors: René Schweikhardt; Thomas Löchner; Johannes Naumann; Johannes HELBIG
Original assignee: Hinderer and Muehlich & Co KG GmbH; Koenig and Bauer AG
Current assignee: Hinderer and Muehlich & Co KG GmbH; Koenig and Bauer AG
Priority date: 2018-02-06
Filing date: 2019-01-28
Publication date: 2020-12-16
Anticipated expiration: 2039-01-28
Also published as: US11679575B2; WO2019154659A3; DE102018102638A1; US20210078281A1; WO2019154659A2; EP3749523B1

Abstract

The invention relates to a method for the rotary blind embossing of a substrate (3), a device (1) for the rotary blind embossing of a substrate (3), a female die (4a) and/or a male die (4b) for use in a device (1), and to a method for producing a female die (4a) and/or a male die (4b). The method for the rotary blind embossing of a substrate (3) in a work station (1a) comprising an embossing roller (2a) and a counter-pressure roller (2b) comprises the following steps: a) preparing the substrate (3); b) blind embossing the substrate (3) by means of at least one female die (4a) provided on the embossing roller (2a) and at least one male die (4b) provided on the counter-pressure roller (2b). The device (1) for the rotary blind embossing of a substrate (3) comprises a work station (1a) having an embossing roller (2a) and a counter-pressure roller (2b), at least one female die (4a) being provided on the embossing roller (2a) and at least one male die (4b) being provided on the counter-pressure roller (2b).

Description

Method and device for the rotary blanking of a substrate, a

Die and / or male for use in a device and a

The invention relates to a method for the rotary embossing of a substrate, a device for the rotary blind embossing of a substrate, a die and / or male part for use in a device, and a method for producing a female part and / or male part , For refining of substrates, such as packaging, the blind embossing is widespread. In this case, a specific pattern, motif or writing is produced by means of a die and a male in the substrate. In embossing, the pattern, motif or writing is sublime in which

Deep stamping deepened in the substrate. Blind embossing typically uses large punches or plates to emboss the pattern, motif, or writing into the substrate. To a variety of types and strengths of deformations, such as steep edges, different angles or At the same time to be able to produce high- and deep-stamped elements, often a stroke embossing method or a stroke embossing device is used, since in this case the desired multiplicity of deformations can be realized with high quality. When Hubprägen the deformation takes place in a lifting movement, in particular by the pressure transmitted by the embossing tool. Although a large number of deformations can be produced with this method, the disadvantage is that by means of the usual stroke embossing methods or

Hub embossing devices can be processed at most about 8000 sheets per hour. Next, the personnel and / or mechanical effort is increased in the stroke embossing, since for the embossing process, the substrate to be embossed in the Hubprägevorrichtung each individually inserted and aligned.

The invention is now based on the object to provide an improved method and an improved device for blind embossing of a substrate. It is a further object of the invention to provide an improved die and / or male for use in a method and device for blind embossing.

This object is achieved by a method for rotatively blind embossing of a substrate in a workstation comprising an embossing roller and a counterpressure roller, the method comprising the following steps

in particular, in the following order comprises: a) providing the substrate; b) blank embossing of the substrate by means of at least one die arranged on the embossing roller and at least one male part arranged on the counterpressure roller. This object is further achieved by a device for rotatively blind embossing of a substrate, in particular for carrying out a method according to one of claims 1 to 22, wherein the device comprises a workstation, which has an embossing roller and a Counterpressure roller comprises, and wherein at least one die on the

Embossing roller is arranged and at least one patrix on the

Counter-pressure roller is arranged. Further, this object is achieved by a die and / or male for use in a device according to any one of claims 23 to 50 and / or for use in a method according to any one of claims 1 to 22. This object is also achieved by a method for manufacturing a die and / or male, in particular for use in a device according to one of claims 23 to 50 and / or to

Use in a method according to one of claims 1 to 22, according to one of claims 51 to 63, wherein the method comprises the following steps: - defining the shape of at least one elevation and / or depression in the surface of the matrix and / or male, in particular by means of software; - Generating the at least one elevation and / or depression in the surface of the die and / or male.

It has been shown that by the method for rotatively blank embossing of a substrate as well as by the device for the rotary blind embossing of a substrate, the number of processed sheets compared to

Hubprägeverfahren or to Hubprägevorrichtungen can be significantly increased, at the same time a qualitatively comparable to the Hubprägen

Embossing result is achieved. As a result, significant cost savings can be achieved. Furthermore, the personal and mechanical complexity decreases, since the rotary blind embossing process is preferably carried out continuously and thus, for example, a manual insertion of the substrate in the

Embossing device is eliminated. Further, in particular when using the

Process in combination with further process steps, such as stamping, creasing or printing, in a common continuous

On the one hand the processing speed further increased and On the other hand, a high register accuracy, for example between a print and the embossing, achieved, since the rotary process with other rotary processes, such as punching, grooving or printing, can be combined. Such an in-line combination can further reduce the mechanical and personnel costs and thus the costs.

Under blind embossing is in this case in particular a relief embossing without the use of a color, in particular a printing ink and / or without the use of a transfer film, in particular a hot stamping foil or

Cold stamping foil, understood. Preferably, a pattern, motif or a

Embossed writing in the substrate, wherein in particular in a high embossing the pattern, motif or the lettering sublime and / or deepened the pattern, motif or script is deepened in the substrate. In this case, a die is to be understood as meaning, in particular, an embossing tool which has the corresponding relief shape as elevations and / or depressions, the die preferably being the relief shape of the die to be achieved

Relief embossing in a mirrored arrangement, i. that is not immediately readable arrangement has.

In this case, a male part is to be understood in particular to mean an embossing tool which has the corresponding relief shape as elevations and / or depressions, the male part preferably being the relief shape of the one to be achieved

Relief embossing in non-mirrored arrangement, i. So in a readable arrangement, has.

In this case, the die and the male mold in particular fit together in such a way that the relief embossing is produced in readable form in the substrate. Preferably acts for it the die from the top and the male from the bottom onto the substrate, the top of the substrate being the viewing side in the later usage form of the substrate. In particular, the die and the male part can also be arranged inverted relative to the previously described arrangement, for example if a transparent substrate in the later use form is to be viewed from the underside of the substrate. Under register or register or register accuracy or registration accuracy is in particular a positional accuracy of two or more elements and / or layers relative to each other, here, for example, the positionally accurate arrangement of the embossing and further applied to the substrate

Features, such as a print, applied to the substrate layers and / or fold or crease lines to understand relative to each other. In this case, the register accuracy should advantageously move within a predetermined tolerance and thereby be as low as possible. At the same time the register accuracy of several elements and / or layers to each other is advantageously an important feature to the

Increase process reliability. The positionally accurate positioning can be done in particular by means of sensory, preferably optically detectable registration marks or register marks. These register marks or register marks can either represent special separate elements or regions or layers or themselves be part of the elements or regions or layers to be positioned.

Further advantageous embodiments of the invention are in the

Subclaims. It is advantageous if in step b) the substrate is blind embossed such that the substrate has at least one elevation and / or depression.

An elevation and / or depression of the substrate is understood in particular to mean a relief form which represents a pattern, motif or writing and which is preferably elevated relative to an unprocessed area of the substrate (embossing) or deepened (embossing). An increase in the substrate is preferably one

Embossing, so that the pattern, motif or writing is embossed in the substrate. A depression of the substrate is preferably a deep embossing, so that the pattern, motif or writing is embossed deeper into the substrate.

Furthermore, it is advantageous if the at least one elevation and / or depression of the substrate in step b) has a height and / or depth of at least 0.02 mm, preferably at least 0.05 mm, more preferably at least 0.1 mm, even more preferably at least 0.5 mm is generated. As a result, optically and haptically appealing blind embossing can be generated.

The method preferably further comprises the following steps, which are carried out in particular before step a) and / or step b): fixing the at least one die on the embossing roll and / or the at least one male on the counterpressure roll by means of a

Fixing device. Thus, it is possible that the at least one die on the embossing roller and / or the at least one male part on the counter-pressure roller is firmly fixed by means of a fixing device. Appropriately, acts it is at the fixing device to a pin, bolt or a

Screw. Further, it is advantageous if the embossing roll and / or the

Counterpressure roller has a plurality of holes, in which the

Fixing device can be introduced. In this way it can be achieved that the die and / or male can be fixed to predefined by the plurality of holes locations.

Further, it is also possible that the at least one die directly as at least one increase and / or depression in the surface of the

Embossing roller is introduced and / or that the at least one male directly as at least one increase and / or depression in the surface of the

Counter-pressure roller is introduced. The die and / or the male part can thus be, in particular, a solid tool, which in particular is designed to be completely solid in one piece or at least partially in one piece in the area of the embossing tools. In this way, a mechanically extremely stable embossing roll with introduced die and a mechanically extremely stable counter-pressure roller with introduced male is provided, which is useful especially for a few conversions of the device on different shapes to be embossed or in uniform to be embossed relief forms.

It is also possible that the at least one die is introduced as at least one elevation and / or depression in the surface of a stamping cylinder, which is arranged detachably on the embossing roll and / or that the at least one male as at least one elevation and / or depression in the surface of a counter-pressure cylinder is introduced, which is arranged detachably on the counter-pressure roller. As a result, a quick conversion can be achieved, in particular compared to a solid tool be because only the embossing cylinder and / or the impression cylinder must be replaced.

According to a further embodiment of the invention, the embossing roller and / or the counter-pressure roller is formed magnetically or magnetically, in particular, the embossing roller and / or the counter-pressure roller as a

Magnetic cylinder executed. This can be a simple and fast

Setting up the device can be guaranteed. It is advantageous if the device has a positioning aid with at least one window area, wherein the positioning aid on the

Embossing roller and / or the counter-pressure roller is arranged and the at least one die and / or male in the at least one window portion of the positioning aid is arranged.

Thus, it is possible that the method further comprises the following steps, which are carried out in particular before step a) and / or step b): - providing a positioning aid comprising at least one

Pane; Arranging the positioning aid on the embossing roller and / or the counterpressure roller; Arranging the at least one die and / or male in the at least one window area of the

Positioning aid.

This makes it possible that the die and / or male at predetermined positions, which through the window areas of the

Positioning help can be determined to be arranged, on the one hand, a quick and thus cost-effective device setup is possible because, for example, the comparatively coarse positioning in Substantially predetermined by the window areas and on the other hand, in particular a further register-accurate adjustment of the die and / or male within the window areas is possible to compensate for tolerances can. Furthermore, a multiplicity of relief forms,

For example, the simultaneous use of Flochprägungen and

Low embossings are realized because only the die and / or male must be exchanged with the corresponding relief forms within the window areas and also any relief shapes can be combined with each other in particular in the individual window areas.

In this case, the term "area" is understood to mean in each case, in particular, a defined area which, when viewed perpendicular to a plane defined by the positioning aid, is assumed. For example, the

Positioning aid, in particular in the flat state, one or more window areas, wherein each of the window areas each occupies a defined area when viewed perpendicular to a plane spanned by the positioning aid level.

Below are, inter alia, preferred embodiments of

Positioning aid described:

Conveniently, the positioning aid has two or more

Window areas, in particular the two or more

Window areas are arranged according to a one- or two-dimensional grid. Furthermore, it is expedient if the outline of the at least one

Window region of the positioning aid substantially corresponds to the outline of the at least one die and / or male. In this case, the outline is understood in particular to be the contours or outer contours of the window area or of the male part and / or die, which are assumed to be perpendicular to a plane spanned by the positioning aid or the female part and / or male part. Advantageously, the at least one window area is the

Positioning aid is greater than the at least one die and / or male, in particular the distance from each edge of the at least one window area to the at least one die and / or male is at least 0.1 mm, preferably 0.2 mm, even more preferably 0, 3 mm. Flierdurch on the one hand ensures that the essential positioning of the die and / or male is correct and on the other hand, that the die and / or male further within the distance from each edge of the respective

Window area to the respective within the window area

arranged die and / or male part adjustable, in particular registration, can be arranged to compensate, for example, tolerances can.

The positioning aid preferably comprises metals, in particular copper, nickel, chromium, iron, zinc, tin, lead or alloys of such metals.

Furthermore, it is possible that the positioning aid is magnetic or

is magnetically formed. This can be a simple and fast

Arranging the positioning aid on the preferably magnetic formed embossing roll and / or preferably magnetically

trained counter pressure roller can be achieved.

It is also advantageous if the positioning aid has a thickness of at least 0.25 mm, preferably of at least 0.5 mm, more preferably of at least 0.75 mm.

Furthermore, it is possible for the positioning aid to have an increased thickness in an area around the at least one window area in comparison to the remaining thickness of the positioning aid, in particular for the positioning aid to be at least 0.1 mm in an area around the at least one window area has a thickness increased by at least 0.2 mm, more preferably by at least 0.3 mm, compared to the remaining thickness of the positioning aid. It has been shown that increased by the window thicknesses of the positioning aid stability and thus the embossing result can be improved, in particular because displacements and / or mechanical movements of the die and / or male preferably prevented or reduced due to the higher mechanical stability become.

It is also possible for the region around the at least one window region to have a width of at least 0.2 mm, preferably of at least 0.5 mm, more preferably of at least 1.5 mm.

Furthermore, it is possible if the positioning aid has a width of at least 250 mm, preferably of at least 500 mm, more preferably of at least 750 mm, and a length of at least 500 mm, preferably at least 750 mm, more preferably of at least 1000 mm, and / or that the at least one window region has a width of at least 5 mm, preferably at least 10 mm, more preferably at least 20 mm, and a length of at least 10 mm, preferably at least 20 mm, more preferably of at least 100 mm.

It is useful if the positioning aid is stretched on the embossing roller and / or the counterpressure roller, in particular if the positioning aid is stretched on the embossing roller and / or the counterpressure roller in such a way that the positioning aid has a rounding which essentially corresponds to the diameter of the embossing roller and / or or the diameter of the

Counterpressure roller corresponds. So it is also possible that the

Positioning aid is stretched on the embossing roller and / or the counter-pressure roller, in particular that the positioning aid so on the

Embossing roller and / or the counterpressure roller is tensioned that the

Positioning aid has a rounding, which substantially the diameter of the embossing roll and / or the diameter of the

Counterpressure roller corresponds.

Rounding is hereby preferably understood to mean a radius of curvature, the radius of curvature in particular corresponding to the radius of a circle of curvature, which at a certain point of a curve is the circle which best approximates the curve at this point.

Preferably, the positioning aid and / or the embossing roller and / or the counter-pressure roller for this purpose on a clamping device. Advantageously, the clamping device of the positioning aid holes, by means of which the positioning aid on the embossing roller and / or the counter-pressure roller can be fixed for example by means of pins or screws. The positioning aid preferably completely encompasses the embossing roller and / or the counterpressure roller. However, it is also possible that the

Positioning aid embraces the embossing roll and / or the platen roller only partially. For example, it is possible that the positioning aid spans the embossing roller and / or the counterpressure roller in half, so that the positioning aid would form a semicircle. Next other sub-voltages such as a three-quarters circle or a quarter circle are conceivable. It is also possible for the embossing roller and / or the counterpressure roller to have a plurality of positioning aids which completely or only partially span the embossing roller and / or the counterpressure roller. For example, two positioning aids, the embossing roll and / or the

Each span half of the counterpressure roller. But there are also any other subdivisions and / or distributions of several

Positioning aids on the embossing roller and / or the counter-pressure roller feasible.

According to a further embodiment of the invention, the at least one die and the embossing roll and / or the at least one male and the counter-pressure roll each represent two different components of the device, in particular the at least one die and / or male in the at least one window region of the positioning aid the

Surface of the embossing roll and / or the counter-pressure roller applied.

In this way, a quick and easy setup and / or conversion of the device can be achieved, since only the small die and / or male part compared to the embossing roller and / or the counter-pressure roller need to be exchanged. Especially in combination with a positioning aid In this case, a quick and at the same time exact device of the device can be achieved on the desired embossing relief forms.

In the following, among other preferred embodiments of the die and / or male and the arrangement or design of the die and / or male in the device for rotary blind embossing are described. Further, the use of the die and / or male in the method and / or the device for rotary blind embossing is described: Preferably, the at least one die and / or male is deformed such that the at least one die and / or male has a rounding, which essentially the diameter of the embossing roll and / or in the

Substantially corresponds to the diameter of the platen roller. So it is also possible that the at least one female and / or male before the

Arranging in which at least one window portion of the positioning aid is deformed such that the at least one die and / or male has a rounding, which substantially corresponds to the diameter of the embossing roller and / or the diameter of the counter-pressure roller. It is also possible that the die and / or male is rounded, in particular that the die and / or male is deformed such that the die and / or male has a rounding, which is substantially equal to the diameter of an embossing roll and / or the diameter corresponds to a counter-pressure roller on which the die and / or male is arranged. Flierdurch an adaptation of the shape of the die and / or male is achieved to the shape of the embossing roller and / or counter-pressure roller, so that the female and / or male can be used in the rotary process. It is advantageous if the matrix and / or male part has at least one elevation and / or depression, which in particular is the one to be embossed

Relief form in positive and / or negative form corresponds. Furthermore, it is possible for the at least one elevation and / or depression to represent a pattern, motif or script. A pattern may be, for example, a graphically designed outline, a figurative representation, an image, a symbol, a logo, a portrait, and the like. For example, a font may be an alphanumeric character, a text, and the like. Furthermore, it is advantageous that the at least one increase in the die and / or the male part has a height of not more than 5.0 mm, preferably of not more than 3.0 mm, more preferably of not more than 1.0 mm, even more preferably of not more than 0.degree , 5 mm, and / or that the at least one recess of the die and / or the male has a maximum depth of 5.0 mm, preferably of not more than 3.0 mm, more preferably of not more than 1.0 mm, even more preferably of maximum 0.5 mm.

It is possible that the at least one elevation and / or depression of the matrix and / or the male mold has a shape selected from the group: round, flat, round-flat, flat-edged, prismatic, prismatic-flat, pointed or hybrid of these forms.

Furthermore, it is possible for the at least one elevation and / or depression of the matrix and / or the male part to be multi-level, in particular sculpted, in terms of their height and / or depth.

Under sculptured preferably a relief form is understood, which represents a sculpture, a motif, a pattern or a font or forms. Preferably, the at least one elevation and / or depression of the die and / or male has at least one side flank, wherein the angle between the at least one side flank and a parallel to the surface of the die and / or male line between 0 ° and 180 °, preferably between 45 ° and 135 °, more preferably between 80 ° and 100 °, even more preferably between 85 ° and 95 °.

It is also expedient if the at least one elevation and / or depression has such a round shape that the shape of the elevation and / or depression is essentially defined by a circular cutout,

is defined in particular with a radius between 0.1 mm and 2.5 mm, preferably between 0.3 mm and 0.7 mm. The shape of the elevation and / or depression can also be essentially elliptical, wherein the smaller radius of the ellipse has a dimension between 0.1 mm and 2.5 mm, preferably between 0.3 mm and 0.7 mm.

Advantageously, the at least one die magnetically on the

Embossing roller is attached and / or the at least one male magnetically mounted on the counter-pressure roller. This makes it possible that the die and / or male quickly and easily on the embossing roll and / or the

Counter-pressure roller can be arranged.

According to a further embodiment of the invention, the at least one die on the embossing roll and the at least one male on the counterpressure roll are arranged such that the holding force with which the at least one die is arranged on the embossing roll is higher, preferably by a factor of one , 5 to 5 is higher, more preferably by a factor of 2.5 to 3.5 is higher than the holding force with which the at least one male on the Counter-pressure roller is arranged. Thus, it is also possible that the at least one die on the embossing roller and the at least one male on the counter-pressure roller are arranged such that the holding force with which the at least one die is arranged on the embossing roller is higher, preferably by a factor of 1 , 5 to 5 is higher, more preferably by a factor of 2.5 to 3.5 is higher than the holding force with which the at least one male on the counter-pressure roller is arranged.

The holding force was measured in particular in the longitudinal direction of the die or male. In particular, the transmission of force was effected by means of a 50 mm wide TESA adhesive tape 4651 glued to the die or male part over a surface area and a suspension tab on the adhesive tape with a length of approximately 100 mm and thus distance from the specimen. The measuring force acts in this measurement method, in particular tangential to the roll surface. In particular, the static friction force is determined as the maximum force by means of an electronic spring-loaded balance (ALLURIS FMI100C5 / 500 N). Advantageously, the

Roll surface and also the surface of the die or male respectively cleaned and de-oiled. This ensures that the male is less fixed compared to the die. The male is thus arranged in particular "looser" than the die. It has been shown that by means of such a relatively lower holding force of the male on the platen roller in comparison to the die on the embossing roller but in particular with the Hubprägeverfahren qualitatively comparable imprints can be achieved because in particular the male due to the lower holding force advantageous degrees of freedom such that this can assume the ideal position with respect to the matrix forming the counterpart. In particular, the patrix "seeks" the ideal position, so to speak. This is advantageously a

Self-alignment allows, which provides a high-quality embossing result. Furthermore, by such automatic self-adjustment or

Positioning the male relative to the die, the effort to set up and / or re-direction of the device significantly reduced because the ideal

Positioning or alignment is effected substantially automatically by the defined lower holding force of the male in comparison to the die. In particular, in combination with the positioning aid in this case a high-quality embossing result is generated, since the male then quasi, as described above, in the ideal position against the female engages, with too much play of the male by the limitation by the

Window portion of the positioning aid, in which the male is arranged, is prevented. Further, it is advantageous if the at least one die and / or male in the at least one window region of the positioning aid is adjustable by means of an adjusting aid. So it is also possible, when arranging the at least one die and / or male in the at least one

Window region of the positioning aid, the at least one die and / or male is adjusted by means of an adjusting aid in the at least one window area.

Expediently, the adjustment aid consists for example of one or more sheets, in particular of one or more gauge blocks and / or one or more spies, which are inserted in particular in the space between the die and / or male and the edge of the window area. Preferably, the gap is formed by the fact that the at least one window area is larger than the at least one die and / or patrix. In particular, the gap corresponds to the distance from each edge of the at least one window area to the at least one die and / or male part. This makes it possible to adjust the die and / or male, in particular to compensate for tolerances, so that a register-accurate embossing result can be achieved.

Preferably, the adjustment aid is arranged such that the at least one die and / or male is at least in one direction movable, in particular flexible.

Advantageously, the adjustment aid is arranged such that the die and / or male is movable in a direction parallel to the feed direction of the substrate, in particular flexible. However, it is also possible that the adjusting aid is arranged such that the at least one die and / or male in a direction perpendicular to the feed direction of the substrate is movable, in particular flexible. Preferably, the at least one die and / or male in a space corresponding to the distance from each edge of the at least one window area to the at least one die and / or male corresponds to movable, in particular flexible, arranged.

Thus, it is possible that the adjusting aid is arranged on one or two, in particular two opposite sides of the window area.

For example, the adjustment aid is arranged on those sides of the window area which are parallel to the longitudinal axis or to the transverse axis of the

Positioning assistance run. The adjusting aid is preferably arranged on the sides of the window area which are parallel to the direction of rotation or running direction of the embossing roller and / or counterpressure roller. However, it is also possible the adjusting aid is arranged on the sides of the window area which are perpendicular to the direction of rotation or running direction of the embossing roller.

This makes it possible that, despite the use of an adjusting aid, the at least one die and / or male at least in one direction still has a game, so that the self-adjustment described above is made possible at least in one direction.

It is expedient if the at least one die and / or male part in the at least one window region of the positioning aid by means of a

Fastening device is attached. Thus, it is possible that when arranging the at least one die and / or male in the at least one

Window region of the positioning aid, the at least one die and / or male is fastened by means of a fastening device in the at least window area. The fastening device is preferably a clamp.

Further, it makes sense if the die and / or male metal, especially brass or other copper alloys, and / or plastics, in particular photopolymers comprises.

Advantageously, the die and / or male is made of several layers, in particular the die and / or male comprises a first layer, preferably a first metal layer, a second layer, preferably a second metal layer, and an adhesive layer. It has been shown that by such a configuration of the die and / or male particularly good

Embossing results can be achieved. The first layer is preferably a first metal layer, in particular a brass layer, and the second layer a second metal layer, in particular a steel layer. The first layer is preferably a first metal layer and / or the second layer is a second metal layer, wherein the first and / or second metal layer comprises brass, bronze, copper, nickel, zinc, tin, lead, iron or steel , Conveniently, the first layer is a first metal layer of a non-magnetic or weakly magnetic material,

in particular of copper and / or zinc. So it is possible that the first layer is a brass layer. The second layer is preferably a second metal layer of ferromagnetic materials, in particular comprising iron, ferrites, cobalt and / or nickel. Thus, it is possible that the second layer is a steel layer. So it is possible that the first layer is a first one

Metal layer of a non-magnetic or weakly magnetic material and the second layer is a metal layer of a magnetic, in particular strongly magnetic, material. For example, the first layer may be a brass layer and the second layer may be a steel layer. Advantageously, the second layer, in particular the second metal layer, is magnetic. As a result, a simple arrangement of the die and / or male on the embossing roller and / or the counter-pressure roller is possible. It is expedient if the second layer, in particular the second

Metal layer, the die is thicker, preferably by a factor between 1, 2 and 3.5, more preferably by a factor between 1, 2 and 2.5, thicker than the second layer, in particular the second metal layer, the male. It is also possible that the second layer, in particular the second metal layer, of the die is thicker than the second layer by at least 0.05 mm, preferably by at least 0.1 mm, more preferably by at least 0.15 mm,

in particular the second metal layer, the male part.

In this way it can be achieved that the holding force with which the at least one die is arranged on the embossing roller is higher than the holding force with which the at least one male part is arranged on the counterpressure roller.

With regard to the further advantages of such a configuration, reference is made here to the above statements. Preferably, the die and the male die have the same materials and / or the same layer structure, in particular the die and the male part, in particular the first layers, are made of metal, in particular of brass. Furthermore, it is also possible that the first layer, in particular the first metal layer, the matrix and the male part are made of the same metal, preferably brass. Furthermore, it makes sense if the at least one Recess and / or increasing layer of the die and / or male of the same metal, preferably made of brass, are formed.

It has been shown hereby that high-quality embossing results can be achieved in this way, in particular that even fine contours of the relief shapes to be embossed can be produced in the embossing.

It is also preferred that the die and male have different materials, in particular that the die metal, especially brass, and the male plastic, in particular a photopolymer, rubber or rubber having.

It is also preferable if the first layers of the die and the male part have different materials. So it is possible that the first

Layer of the die, made of metal, in particular brass, and the first layer of the male part, made of plastic, in particular of a photopolymer, rubber or rubber, are formed. Further, it is possible that the first layer of the male is formed of a rubber blanket. In this way it can be achieved that, for example, the male and / or the first layer of the male mold made of a rubber can be made cheap and easy, at the same time a good embossing result is achieved, especially since the softer male is the relief of the harder die, which for example Metal is, adapt.

Preferably, the thickness of the first layer is between 0.5 mm and 2.5 mm, preferably between 0.75 mm and 2 mm, more preferably between 1 mm and 1.75 mm and / or the thickness of the second layer between 0.05 mm and 1.5 mm, preferably between 0.1 mm and 1 mm, more preferably between 0.15 mm and 0.5 mm.

Further, it is advantageous if the adhesive layer is a hot melt or

Cold glue layer is.

So it is also possible that the adhesive layer is a

Two-component adhesive (2K adhesive), in particular comprising epoxy resins, acts. The adhesive layer is preferably an epoxy-based two-component adhesive system, such as, for example, Araldit from Huntsman, Salt Lake City, Utah, USA.

Furthermore, it is also advantageous if the adhesive layer is a double-sided adhesive tape. The double-sided adhesive tape is preferably coated on both sides with a pressure-sensitive adhesive (PSA). Such double-sided adhesive tapes can be obtained, for example, from tesa, Norderstedt, Germany.

Further, it is useful if the adhesive layer preferably has a layer thickness between 0.01 mm and 0.75 mm, preferably between 0.05 mm and 0.5 mm, more preferably between 0.05 mm and 0.25 mm.

However, it is also possible that the die and / or male is made of a single layer. Preferably, the single-layer die and / or male is magnetic. Advantageously, the single-layer die and / or male is formed of a magnetic, in particular highly magnetic, material. The single-layer matrix and / or male part preferably comprises ferromagnetic materials, in particular comprising iron, ferrites, cobalt and / or nickel.

Thus, it is possible that the single-layer die and / or male is made of steel. Thus, the matrix and / or patrix may become so

in particular, a single-layered steel die and / or die.

Even with a single-layer matrix and / or male, it is advantageous if the die is thicker, preferably by a factor between 1, 2 and 3.5, more preferably by a factor between 1, 2 and 2.5, thicker than that male.

Again, it is possible that the die is at least 0.05 mm, preferably at least 0.1 mm, more preferably at least 0.15 mm, thicker than the male. With regard to the advantages of such a configuration, reference is made here to the above statements.

It is also advantageous if the die has a thickness between 0.1 mm and 5 mm, preferably between 0.5 mm and 3 mm, and / or the male die has a thickness between 0.1 mm and 5 mm, preferably between 0.5 mm and 3 mm. It is especially in the Fierstellung the die and / or male

expedient that the at least one elevation and / or depression, in particular by means of a computer-controlled engraving machine and / or a computer-controlled milling machine, engraved and / or milled. It is also possible for the at least one elevation and / or depression to be produced photolithographically. Furthermore, it is possible for the at least one elevation and / or depression to be produced by means of a laser, in particular by laser ablation.

It has been found that, in particular in the manufacture of the die and / or male die by means of a computer-controlled engraving and / or milling machine matrices and / or male can be produced, which are characterized by particularly good embossing results, especially those with fine contours in the form of corresponding embossed elevations and / or depressions of the substrate can be produced.

Furthermore, it is advantageous in particular in the production of the matrix and / or male that the method further comprises the following step

In particular, before the step of generating the at least one elevation and / or depression in the surface of the die and / or male is carried out: - Reducing the defined shape of the at least one elevation and / or depression in the surface of the die and / or male around one predetermined reduction factor, wherein the reduction factor is in particular between 0.95 and 1, preferably between 0.9750 and 0.9999, more preferably between 0.98000 and 0.99999, even more preferably between 0.99000 and 0.9999. Advantageously, the predetermined reduction factor in

Depending on the diameter of the embossing roll and / or the

Counterpressure roller determined. Furthermore, it is possible for the predetermined reduction factor to be determined as a function of the embossing length and / or a printing length, in particular on the substrate. It has been shown that the embossing result can be further improved by such a reduction factor, since in particular a possible distortion or extension of the relief to be embossed, in particular due to the Curvature of the embossing roll and / or the counter-pressure roller can be compensated for on the substrate.

Furthermore, it is advantageous if the defined shape of the at least one

Raising and / or depression in the surface of the die and / or male in accordance with a predetermined distortion factor, in particular along a surface normal of the plane defined by the die and / or male level, is distorted. Thus, it is possible that the at least one elevation and / or depression has a distortion, in particular along a surface normal of the plane defined by the matrix and / or male.

Preferably, areas of the at least one die and / or male, which are not intended to emboss the substrate, are removed or released. In particular, in this case the male part is removed or removed in such a way that the so-called base of the female part is not embossed into the substrate. In this case, the male part is preferably removed or removed by at least 0.2 mm, more preferably by at least 0.3 mm, even more preferably by at least 0.4 mm.

In the following, among other further preferred embodiments of the method and of the device for the rotary blind embossing of a substrate are described:

Furthermore, it is possible that the method further comprises the following step, which is carried out in particular before step a) and / or step b): inserting at least one leveling layer between the at least one die and the embossing roll and / or the at least one Male and the counter pressure roller. So it is also possible that at least one

Leveling layer between the at least one die and the embossing roll and / or the at least one male and the counter-pressure roller is arranged. In this way, the height of the die and / or the male can be adjusted defined to allow, for example, a height compensation. It is also possible for the ratio of the diameter of the embossing roller to the diameter of the counterpressure roller to be 1 to 2, preferably 1 to 1.

Preferably, the embossing roller and the counter-pressure roller are driven in opposite directions at mutually corresponding rotational speeds. So it is also possible that the embossing roller and the

Counter-pressure roller with mutually corresponding rotational speeds are opposite to each other driven.

In this case, preferably, the at least one die and the at least one male part engage each other in such a way that the substrate located between the at least one die and the at least one male is embossed, in particular in an overlapping region of the at least one die and the at least one male. Thus, it is also possible for the at least one die and the at least one male part to be arranged such that they intermesh with each other in such a way that the substrate located between the at least one die and the at least one male, in particular in an overlapping region of the at least one die and the at least one patrix, is stampable. It is further advantageous that the substrate is embossed in such a way that the deviations between the embossments of each cycle are less than 2%.

Percent, preferably less than 1% percent, even more preferably less than 0.05% percent. Conveniently, the method further comprises the following step: feeding the substrate to the work station comprising the embossing roll and the

Backing roll. Furthermore, it makes sense if the method further comprises at least one of the following steps, which in one or more further

Work stations are carried out: - printing the substrate; - dicing the substrate; - Grooving and / or folding of the substrate. Thus, it is also possible that the device further comprises one or more further work stations for printing on the substrate and / or for severing the substrate and / or for the groove and / or folding of the substrate. Preferably, the one or more further work stations are arranged before and / or after the workstation comprising the embossing roller and the counterpressure roller. Preferably, the printing takes place here by means of offset printing, screen printing, gravure printing, flop printing or inkjet printing. Furthermore, it is preferred if the pressure is generated by means of a pressure roller. During printing, one or more printing inks are advantageously applied to the substrate, in particular according to a printing screen. Preferably, the substrate is severed by punching, wherein in particular the substrate is severed by means of a cutting tool and / or punching tool. Preferably, in the groove, the bending ability of the substrate by means of a

Drückwerkzeugs changed in particular by material displacement. Under folding is preferred to produce a sharp crease with the help of a

Tool understood.

According to a further embodiment of the invention, the substrate is preferably processed continuously. It is also advantageous that, in particular in step a), the substrate is provided as sheet material.

Furthermore, it is preferred here if the deviations between the

Embossments on the sheets of the sheeted substrate are less than 2%, preferably less than 1%, even more preferably less than 0.05%.

Further, it is possible that by means of the method and / or the device more than 8000 sheets per hour, preferably more than 10,000 sheets per hour, more preferably more than 12,000 sheets per hour, even more preferably more than 14,000 sheets per hour, of Sheet goods provided

Substrate, to be processed.

In the following, exemplary embodiments of the invention will be explained by way of example with the aid of the attached, not to scale, figures.

Fig. 1 a to Fig. 1 c show schematically a device and a

Method for rotary blind embossing

Fig. 2 shows schematically a device for rotary

Blind embossing Fig. 3 shows schematically a device for rotary

blind embossing

Fig. 4 shows schematically a method for rotary

blind embossing

Fig. 5 shows schematically a device for rotary

blind embossing

FIGS. 6 a to 6d schematically show sectional views of FIG

Embossing rollers and / or counterpressure rollers

FIGS. 7a to 7e schematically show positioning aids in plan view

FIGS. 7f to 7i schematically show sectional views of FIG

enlarged section of Fig. 7c

FIGS. 8a to 8c schematically show sectional representations of dies and / or dies FIGS. 9a and 9b show schematically sectional representations of dies and / or dies

FIGS. 10a to 10g schematically show sectional views of FIG

relief forms

FIGS. 11 a to 11 e schematically show sectional views of FIG

Relief forms FIGS. 12a to 12d schematically show sectional views of FIG

relief forms

Figures 13a and 13b show methods of making a template

and / or patrix

Fig. 1 a to Fig. 1 c show schematically a device 1 for rotary

Blind embossing. The device 1 for rotatively blind embossing of a substrate 3 comprises a work station 1 a, which in turn has an embossing roll 2 a and a

Counterpressure roller 2b comprises, wherein a die 4a is arranged on the embossing roller 2a and a male part 4b is arranged on the counter-pressure roller 2b. In this context, blind embossing is understood in particular to be a relief embossing without the use of a color, in particular a printing ink and / or without the use of a transfer film, in particular a hot embossing film or cold embossing film. Preferably, a pattern, motif or a Embossed font in the substrate 3, wherein in particular in a high embossing the pattern, motif or the lettering sublime and / or engraved in a deep embossing the pattern, motif or font is embossed in the substrate 3. By means of the device 1 shown in FIG. 1 a, as shown in FIGS. 1 a to 1 d.

1 c, a method for rotationally blind embossing of the substrate 3 in the work station 1 a comprising an embossing roller 2 a and a counterpressure roller 2 b is carried out, the method comprising the following steps, which are carried out in particular in the following order: a) providing the substrate 3 ; b) blind embossing of the substrate 3 by means of the die 4b arranged on the embossing roll 2a and the male die 4b arranged on the counterpressure roll 2b.

As shown in Fig. 1a, in a first step, the substrate 3 is provided. Subsequently, as shown in FIG. 1 b, the substrate 3 is embossed or blind embossed by means of the die 4 a arranged on the embossing roll 2 a and the male die 4 b arranged on the counterpressure roll 2 b.

As shown in FIG. 1 c, it is advantageous if, in the step shown in FIG. 1 b, the substrate 3 is blind embossed in such a way that the substrate 3 has at least one elevation 5 a and / or depression 5 b.

Under an elevation 5a and / or depression 5b of the substrate 3 becomes

especially understood a relief shape, which represents a pattern, motif or a font. An increase 5a of the substrate 3 relative to an unprocessed region of the substrate 3 is preferably an embossing, so that the pattern, motif or writing is embossed into the substrate 3. In a recess 5b of the substrate 3 relative to a unprocessed area of the substrate 3 is preferably a deep embossing, so that the pattern, motif or font is embossed deepened in the substrate 3. For example, in the case of a deep embossing, the elevation 5a and / or depression 5b shown in FIG. 1c would be mirrored at the plane defined by the substrate 3, ie the bulge of the substrate 3 would now point downwards and not upwards.

Furthermore, it is advantageous if the at least one elevation 5a and / or depression 5b of the substrate 3 is produced with a height and / or depth of at least 0.05 mm, preferably at least 0.1 mm, more preferably at least 0.5 mm ,

As schematically shown in FIGS. 1a to 1c, the ratio of the diameter of the embossing roll 2a to the diameter of the counterpressure roll 2b is 1: 1

Counter-pressure roller have different diameters. Thus, it is also possible that the ratio of the diameter of the embossing roller 2a to the diameter of the counter-pressure roller 2b is 1 to 2. Preferably, the diameter of the embossing pressure roller is between 100 mm and 450 mm, preferably between 200 mm and 350 mm, and / or the diameter of the counter-pressure roller between 200 mm and 800 mm, preferably between 400 mm and 700 mm. Thus, it is possible for the diameter of the embossing roll to be, for example, 300 mm ± 5 mm, preferably 298.4 mm ± 0.02 mm, and / or the diameter of the counterpressure roll, for example 600 mm ± 5 mm, preferably 599.4 mm ± 0, 02 mm, is. The substrate 3 is, as shown in Fig. 1 a to Fig. 1 c, preferably provided as a sheet. However, it is also possible that the substrate 3 is provided as a roll product for roll-to-roll processing. Preferably, the substrate 3 comprises pulp and / or plastics.

Advantageously, the substrate 3 is paper, cardboard and / or films, in particular plastic films, or hybrid and / or

Composites of such materials. The substrate 3 is expediently supplied to the work station 1 a comprising the embossing roll 2 a and the counterpressure roll 2 b. This happens, for example, by means of a transport device having the corresponding rollers with which the substrate 3 to the desired position in the

Workstation 1 a is transported, i. the substrate 3 is advanced accordingly.

As indicated in FIGS. 1 a to 1 c by the arrows, the embossing roll 2 a and the counterpressure roll 2 b are preferably driven in opposite directions at mutually corresponding rotational speeds. In this case, the matrix 4a and the male part 4b advantageously engage each other in such a way that the substrate 3 located between the female mold 4a and the male part 4b is embossed, in particular in an overlapping region of the female mold 4a and the male part 4b. By means of the device shown in FIGS. 1 a to 1 c, it is possible for the substrate 3 to be embossed in such a way that the deviations between the

Each round is less than 2%, preferably less than 1%, even more preferably less than 0.05%. With regard to the arrangement of the die 4a on the embossing roller 2a and the male part 4b on the counter-pressure roller 2b and the configuration of the die 4a and the male part 4b, reference is made here to the comments below.

Fig. 2 shows schematically a device 1 for rotary blind embossing. The device of FIG. 2 differs from the device 1 of FIG. 1 a to FIG. 1 c in that three matrices 4a and on the counter-pressure roller 2b corresponding to three patricks 2b are arranged on the embossing roller 2a.

Again, the embossing roller 2a and the platen roller 2b

The matrices 4a and the patricks 4b each interlock with each other in such a way that the substrate 3 located between the matrices 4a and the patrices 4b, in particular in an overlapping region of the matrices 4a and the patrices 4b , is embossed.

Furthermore, the device 1 of FIG. 2, in contrast to the device of FIGS. 1 a to 1 c, has a positioning aid 7. The positioning aid 7 is arranged in Fig. 2 only on the embossing roll 2a.

The positioning aid 7 in this case has recesses in the form of .alpha. In the regions in which the matrices 4a are arranged on the embossing roller 2a

Window areas, in which the matrices 4a can be used. Advantageously, therefore, prior to the embossing of the substrate 3, first the positioning aid comprising the window areas is provided.

Subsequently, the positioning aid 7 is arranged on the embossing roll 2a and the dies 4a in the window areas of the positioning aid 7 are preferably arranged on the embossing roller 2a.

With regard to the further embodiment of the positioning aid 7 as well as the arrangement of the die 4a on the embossing roll 2a, reference is made here to statements below.

Fig. 3 shows schematically a device 1 for rotary blind embossing. The device of Fig. 3 differs from the device of Fig. 2 in that both on the embossing roller 2a and on the

Counter-pressure roller 2b a positioning aid 7 is arranged. The positioning aid 7 arranged on the counter-pressure roller also has recesses in the form of window areas in which the patrices 4b can be inserted in the areas in which the patrices 4b are arranged on the counterpressure roller 2b. Advantageously, therefore, before the embossing of the substrate 3, first the positioning aid comprising the

Window areas provided. Subsequently, the positioning aid 7 is arranged on the counter-pressure roller 2b and the Patrizen 4b in the

Window regions of the positioning aid 7 preferably on the

Counter-pressure roller 2b arranged.

With regard to the further embodiment of the positioning aid 7 as well as the arrangement of the male part 4b on the counter-pressure roller 2b, reference is made here to the comments below.

Further, the device 1 of Fig. 3, in contrast to the device 1 of Fig. 2 on leveling layers 8, which are arranged between the male part 4b and the platen roller 2b. Such compensating layers preferably have a layer thickness of at least 0.01 mm, preferably 0.02 mm, more preferably 0.03 mm.

By means of such compensating layers is a defined height compensation of the embossing, i. a trimming possible. Next is also possible that the

Leveling layers between the dies 4a and the embossing roller 2a are arranged.

Fig. 4 shows schematically a method for rotary blind embossing. The

Method includes steps 10a to 10e.

In the method, first, in step 10a, a substrate 3

provided. In a further step 10b, the substrate 3 is printed. Preferably, the printing takes place here by means of offset printing, screen printing, gravure printing, high-pressure or inkjet printing. Furthermore, it is preferred if the pressure is generated by means of a pressure roller. During printing, one or more printing inks, in particular according to a grid, are advantageously applied to the substrate 3.

In a further step 10c, the substrate 3 by means of a on a

Embossing roller 2a arranged die 4 a and 4b arranged on a counter-pressure roller 2b male 4b blind embossed. With regard to blind embossing, reference is made here to the above statements. Expediently, the substrate 3 is hereby defined, in particular with register accuracy, to the embossing roller 2a and the counterpressure roller 2b. Under register or register or register accuracy or registration accuracy is in particular a positional accuracy of two or more elements and / or layers relative to each other, here, for example, the positionally accurate arrangement of the embossing and further applied to the substrate

Features, such as a print, applied to the substrate layers and / or fold or crease lines to understand relative to each other. In this case, the register accuracy should in particular move within a predetermined tolerance and be as small as possible. At the same time the register accuracy of several elements and / or layers to each other is advantageously an important feature to the

In a further step 10d, the substrate 3 is grooved and / or folded.

Preferably, in the groove bending ability of the substrate 3 is changed by means of a spinning tool in particular by material displacement. Under folding is preferably understood to make a sharp bending edge with the aid of a tool.

In a further step 10e, the substrate 3 is severed. Preferably, the substrate 3 is severed by punching, wherein in particular the substrate 3 is severed by means of a cutting tool and / or punching tool. The steps 10a to 10e are preferably carried out in different workstations of a device.

It is useful if the substrate 3 is preferably processed continuously.

It is also advantageous if the substrate 3 is provided as sheet material. Furthermore, it is preferred here if the deviations between the

Embossments on the sheets of the sheet 3 provided substrate 3 less than 2% percent, preferably less than 1% percent, more preferably less than 0.05% percent amount.

Furthermore, it is possible that by means of the method more than 8000 sheets per hour, preferably more than 10,000 sheets per hour, more preferably more than 12,000 sheets per hour, even more preferably more than 14,000 sheets per hour, of the sheet 3 provided substrate, are processed.

Fig. 5 shows schematically a device 1 for rotary blind embossing. The device 1 in FIG. 5 comprises a transport device 11, which serves to transport the substrate 3. For example, it is possible that the

Transport device 11 a supply roll, on which the substrate. 3

is wound up. Alternatively, it is also possible that the

Transport direction 11 is designed for transporting substrate 3 in an arc shape.

Furthermore, the device 1 comprises the work station 1 b for printing the substrate 3. Preferably, the workstation comprises a pressure roller. With regard to the printing of the substrate 3, reference is made here to the above statements.

Further, the device 1, the workstation 1 a for rotative

Blind embossing of the substrate 3. With regard to the design of the workstation 1 a and the rotary blind embossing is here also refer to the above statements.

Further, the device comprises the workstation 1 c for the grooves and / or folding of the substrate 3. Preferably, the workstation 1 c comprises a spinning tool and / or folding tool for generating a sharp bending edge. With regard to the scoring and / or folding of the substrate 3 is here also to the above

References.

Furthermore, the device comprises the workstation 1d for severing the substrate 3. Advantageously, the workstation 1d comprises a

Cutting tool. With regard to the severing of the substrate 3, reference is also made here to the above statements.

As shown in Fig. 5, the workstation 1 b in front of the workstation 1 a comprising the embossing roller 2a and the counter-pressure roller 2b is arranged. The work stations 1 c and 1 d, after the workstation 1 a comprising the embossing roller 2a and the platen roller 2b are arranged. However, other sequences of workstations are conceivable. So it is for example possible that the workstation 1 c before and / or the workstation 1 b after the workstation 1 a comprising the embossing roller 2a and the counter-pressure roller 2b is arranged. Further, it is advantageous if by means of the device 1 more than 8000 sheets per hour, preferably more than 10,000 sheets per hour, more preferably more than 12,000 sheets per hour, even more preferably more than 14,000 sheets per hour, of the sheet 3 provided as substrate , are processed.

FIGS. 6a to 6d schematically show sectional views of embossing rollers 2a and / or counterpressure rollers 2b. As shown in Fig. 6a, it is possible that the die 4a is introduced directly as at least one elevation and / or depression in the surface of the embossing roll 2b and / or that the at least one male 4a directly as at least one elevation and / or depression into the surface of the

Counterpressure roller 2b is introduced. The die 4 a and / or the male die 4 b can thus be, in particular, a solid tool, which in particular is designed to be completely solid in one piece or at least partially in one piece in the region of the embossing tools. In such

Full tools are therefore to be embossed relief forms introduced directly into the surface of the embossing roller 2a and / or counter-pressure roller 2b full cylinder. The introduction preferably takes place by etching,

Engraving and / or by means of a laser, in particular by means of laser ablation.

Furthermore, it is also possible, as shown in FIG. 6b, for the die 4a and / or the male part 4b to be fixed on the embossing roll 2a and / or the counterpressure roll 2b by means of a fixing device 6. Preferably, it is in the

Fixing device 6 to a pin, bolt or screw. Further, it is advantageous if the embossing roller 2a and / or the counterpressure roller 2b has a multiplicity of holes into which the fixing device 6 can be introduced. In this way, it can be achieved that the die 4a and / or male part 4b can be fixed to positions predefined by the multiplicity of holes. However, the fixation can also be done by a clamp. Further, it is possible that the die 4a and / or the male part 4b by clamping or clamping on the embossing roller 2a and / or the

Counter-pressure roller 2b are fixed.

Further, it is possible that the embossing roller 2a and / or the counter-pressure roller 2b is magnetic or is magnetically formed. It is also possible that the embossing roller 2a and / or the counterpressure roller 2b is a magnetic cylinder. In this case, the die 4a and / or the male part 4b can preferably be magnetically fixed to the embossing roller 2a and / or counterpressure roller 2b. As shown in Fig. 6c, it is also possible that the die 4a as a

Increase and / or depression is introduced into the surface of a stamping cylinder 12a, which is detachably arranged on the embossing roller 2a and / or that the male part 4b is introduced as an increase and / or depression in the surface of a counter-pressure cylinder 12b, which releasably on the

Counter-pressure roller 2b is arranged.

Again, it is possible that the embossing cylinder 12 a and / or the

Counter-pressure cylinder 12b is clamped and / or tensioned on the embossing roller 2a and / or the counter-pressure roller 2b. Preferably, the embossing cylinder 12a and / or the impression cylinder 12b is magnetically applied to the embossing roller 2a and / or the counter-pressure roller 2b, wherein in particular the embossing roller 2a and / or the counter-pressure roller 2b is magnetic. alternative can also be the embossing cylinder 12a and / or the impression cylinder 12b carried out magnetically.

As shown in FIG. 6d, it is advantageous if the matrix 4a and / or the male part 4b are arranged on the embossing roller 2a and / or the counterpressure roller 2b with the aid of a positioning aid 7. As shown in Fig. 6d, in particular a plurality of matrices 4a and / or 4b Patricks using the

Positioning aid 7 are arranged on the embossing roller 2a and / or the counter-pressure roller 2b or applied to the embossing roller 2a and / or the counter-pressure roller.

In this case, the positioning aid 7 has recesses in the form of window regions in which the matrices 4a and / or the male members 4b can be inserted in the regions in which the matrices 4a and / or the male parts 4b are arranged on the embossing roller 2a and / or the counterpressure roller , Advantageously, the device thus has a positioning aid 7 with window regions, wherein the positioning aid 7 is arranged on the embossing roller 2a and / or the counterpressure roller 2b and the matrices 4a and / or patricks 4b are arranged in the window regions of the positioning aid.

The positioning aid 7 is preferably tensioned onto the embossing roller 2a and / or the counterpressure roller 2b; in particular, the positioning aid 7 is stretched onto the embossing roller 2a and / or the counterpressure roller 2b in such a way that the positioning aid 7 has a curve which essentially corresponds to the diameter of the embossing roller 2a and / or the diameter of

Counterpressure roller 2b corresponds. Rounding is hereby preferably understood to mean a radius of curvature, the radius of curvature in particular corresponding to the radius of a circle of curvature, which at a certain point of a curve is the circle which best approximates the curve at this point. Thus, for example, the diameter of the embossing roll 2a and / or the counterpressure roll 2b represents a circle of curvature, the radius of which then essentially corresponds to the circle

Radius of curvature of the positioning aid 7 is.

Preferably, as shown in Fig. 6d, the positioning aid 7, the embossing roll 2a and / or the platen 2b completely. However, it is also possible that the positioning aid 7, the embossing roller 2a and / or the

Counterpressure roller 2b only partially spanned. For example, it is possible that the positioning aid 7, the embossing roller 2a and / or the

Counter-pressure roller 2b spanned halfway, so that the positioning aid 7 in Fig. 6d would form a semicircle. Further, other sub-voltages such as a three-quarter circle or a quarter circle are conceivable.

It is also possible for the embossing roll 2a and / or the counterpressure roll 2b to have a plurality of positioning aids 7 which completely or only partially surround the embossing roll 2a and / or the counterpressure roll 2b. For example, two positioning aids 7, the embossing roller 2a and / or the

Twist counter-pressure roller 2b halfway. But there are also any other subdivisions and / or distributions of several

Positioning aids 7 on the embossing roller 2a and / or the platen 2b feasible.

Preferably, the positioning aid 7 and / or the embossing roller 2a and / or the counter-pressure roller 2b has a tensioning device, by means of which In particular, the positioning aid 7 on the embossing roller 2a and / or the counter-pressure roller 2b can be stretched. Advantageously, the clamping device of the positioning aid holes, by means of which the positioning aid on the embossing roller and / or the counter-pressure roller can be fixed for example by means of pins or screws.

Again, it is particularly useful for arranging the positioning aid 7 on the embossing roller 2a and / or the counter-pressure roller 2b, when the embossing roller 2a and / or the counter-pressure roller 2b is magnetic or

is magnetically formed, in particular when it is a magnetic cylinder in the embossing roller 2a and / or the counter-pressure roller 2b. As a result, the positioning aid 7 can be arranged magnetically on the embossing roll 2a and / or the counterpressure roll 2b. Furthermore, it is also possible for the positioning aid 7 itself to be magnetic.

FIGS. 7a to 7e schematically show positioning aids 7 in plan view.

As shown in Fig. 7a, the positioning aid preferably has a plurality of window areas 7a, wherein the plurality of window areas 7a are arranged according to a grid.

In this case, "area" is to be understood as meaning, in particular, a defined area which, when viewed perpendicular to a plane spanned by the positioning aid 7, is occupied. Thus, for example, the positioning aid 7, in particular in the flat state, one or more window areas 7a, wherein each of the window areas 7a each have a defined area when viewed perpendicular to one of the

Positioning aid 7 spanned level occupies. Furthermore, it is possible that the positioning aid 7 has a width 7c of at least 250 mm, preferably of at least 500 mm, more preferably of at least 750 mm, and a length 7d of at least 500 mm, preferably at least 750 mm, more preferably of at least 1000 mm , and / or that the at least one window region 7a has a width 7ab of at least 5 mm, preferably at least 10 mm, more preferably at least 20 mm, and a length 7al of at least 10 mm, preferably at least 20 mm, more preferably at least 100 mm, has. The positioning aid 7 shown in FIG. 7a has, for example, a width 7c of 752 mm and a length 7d of 1020 mm. Next point the

Window portions 7a of the positioning aid 7 shown in Fig. 7a have a width 7ab of 40 mm and a length 7al of 150 mm. Next are the

Window regions 7a of the positioning aid 7 shown in FIG. 7a are rotated relative to the outer edges of the positioning aid 7, in particular by less than 2 °, preferably by less than 1 °, twisted. However, it is also possible that the window areas 7a not opposite the outer edges of the

Positioning aid 7 are twisted. The positioning aid 7 preferably comprises metals, in particular copper, nickel, chromium, iron, zinc, tin, lead or alloys of such metals. The positioning aid 7 shown in FIG. 7a is a positioning aid 7 made of steel. Further, it is also possible that the positioning aid 7 is magnetic or is magnetically formed. Furthermore, the positioning aid 7 shown in FIG. 7a has a tensioning device 7b. Expediently, the tensioning device 7b of the positioning aid 7a has holes by means of which the positioning aid 7a can be fastened or clamped on the embossing roller 2a and / or the counterpressure roller 2b, for example by means of pins or screws.

The positioning aid 7 shown in FIG. 7b corresponds to the positioning aid 7 shown in FIG. 7a, with the difference that the window areas 7a of the positioning aid shown in FIG. 7b are made square. Further, the window portions 7a are not opposite to the outer edges of

Positioning aid 7 twisted. With regard to the further embodiment of the positioning aid 7, reference is made here to the above statements.

The positioning aid 7 shown in FIG. 7c corresponds to the positioning aid 7 shown in FIG. 7a with the difference that in the window areas 7a matrices 4a and / or patricks 4b are arranged, wherein matrices 4a are used in particular when the positioning aid 7 is located on the Embossing roller 2a is arranged and Patrizen 4b are used in particular when the positioning aid 7 is arranged on the platen roller 2b.

As shown in FIG. 7c, it is expedient for the outline of the respective window area 7a of the positioning aid 7 to essentially correspond to the outline of the die 4a and / or the male part 4b arranged therein.

In this case, the outline is understood in particular to be the contours or outer contours of the window area 7a or of the male part 4a and / or die 4b, which are taken when viewed perpendicular to one of the positioning aid 7 and the die 4a and / or male 4b plane spanned.

With regard to the detail 13 shown in FIG. 7c, reference is made here to statements below.

The positioning aid 7 shown in FIG. 7d corresponds to the positioning aid 7 shown in FIG. 7b with the difference that matrices 4a and / or patrices 4b are arranged in the window regions 7a, the elevations and / or depressions, which in particular correspond to the relief shapes to be embossed in positive and / or negative form, are shown schematically in Fig. 7d as a font. However, it is also possible to use other writings as embossed relief forms. It is also possible to use patterns or motifs as relief forms to be embossed or combinations of patterns, motifs or fonts.

The positioning aid 7 shown in FIG. 7e comprises the window regions 7a in which differently configured dies 4a and / or patrices 4b are arranged. As shown in Fig. 7e, the relief shapes to be embossed may be selected from a variety of shapes. Thus, it is possible that the elevations and / or depressions, which correspond in particular to the relief forms to be embossed in positive and / or negative form, represent a pattern, motif or writing. A pattern may be, for example, a graphically designed outline, a figurative representation, an image, a symbol, a logo, a portrait, and the like. For example, a font may be an alphanumeric character, a text, and the like. Furthermore, combinations of these patterns, motifs and fonts can be used as a relief form to be embossed. FIGS. 7f to 7i schematically show a sectional view of the enlarged detail of FIG. 7c.

As shown in FIG. 7f, the positioning aid 7 preferably has a thickness 7e of at least 0.25 mm, preferably of at least 0.5 mm, more preferably of at least 0.75 mm. The positioning aid 7 shown in FIG. 7f in this case has a thickness 7e of 0.25 mm.

Also, as shown in FIG. 7f, the positioning aid 7 preferably has an increased thickness 7f in a region 16 around the window region 7a in comparison to the remaining thickness of the positioning aid 7. In particular, the

Positioning aid 7 in the area 16 around the window portion 7a by at least 0.1 mm, preferably an increased thickness by at least 0.2 mm, compared to the remaining thickness of the positioning aid 7 on. The positioning aid 7 shown in FIG. 7f has, for example, a thickness 7f of 0.5 mm in the region 16.

Furthermore, it is possible that the region 16 around the window region 7a has a width of at least 0.2 mm, preferably of at least 0.5 mm, more preferably of at least 1.5 mm. Thus, the area 16 around the window area 7a in FIG. 7f has a width of 1.5 mm.

Further, in the window portion 7a, as shown in Fig. 7f, a die 4a is arranged. The die 4a here comprises the layers 17a, 17b and 17c.

With regard to the layers 17a, 17b and 17c as well as the configuration of the die 4a, reference is made here to the comments below. Furthermore, the window area 7a of the positioning aid 7 is expediently larger than the matrix 4a and / or the male part 4b arranged in the window area 7a. Preferably, the distance from each edge of the

Window portion 7a to the die 4a and / or male 4b at least 0.1 mm, preferably 0.2 mm, more preferably 0.3 mm.

FIG. 7g corresponds to FIG. 7f with the difference that in the window area 7a a male part 4b instead of a female part 4a is arranged. The male part 4b here comprises the layers 17a, 17b and 17c. With regard to the layers 17a, 17b and 17c and the configuration of the male part 4b is here below

References.

FIG. 7h corresponds to FIG. 7f with the difference that the male part 4b in the window area 7a of the positioning aid 7 is adjustable by means of an adjusting aid 9a.

Expediently, the adjustment aid 9a consists for example of one or more sheets, in particular of one or more gauge blocks and / or one or more spies, which are inserted in particular in the space between the male part 4b and the edge of the window portion 7a. Because the window region 7a is preferably larger than the male mold 4b, the intermediate space is created, in which the adjustment aid 9a is preferred

is introduced. In particular, the gap corresponds to the distance from each edge of the window area 7a of the male part 4b. Furthermore, it is also possible for the die 4a of FIG. 7f to be located in the window area 7a of FIG

Positioning aid 7 is adjustable by means of an adjustment aid 9a. The adjusting aid 9a is preferably arranged in such a way that the at least one die 4a and / or male part 4b is arranged to be movable, in particular flexible, at least in one direction. Advantageously, the adjusting aid 9a is arranged such that the die 4a and / or male part 4b is arranged to be movable, in particular flexible, in a direction parallel to the feed direction of the substrate 3. However, it is also possible that the adjusting aid 9a is arranged such that the at least one die 4a and / or male part 4b is movable in a direction perpendicular to the feed direction of the substrate 3,

especially flexible, is arranged. Preferably, the at least one die 4a and / or male part 4b is arranged in a gap that corresponds to the distance from each edge of the at least one window area 7a to the at least one die 4a and / or male part 4b movable, in particular flexible.

It is thus possible for the adjusting aid 9a to be arranged on one or two, in particular two opposite, sides of the window region 7a. For example, the adjustment aid 9a on those sides of

Window portion 7a arranged, which run parallel to the longitudinal axis or to the transverse axis of the positioning aid 7. The adjusting aid 9a is preferably arranged on the sides of the window area 7a which are parallel to the direction of rotation or running direction of the embossing roller 2a and / or counterpressure roller 2b. However, it is also possible for the adjustment aid 9a to be arranged on the sides of the window area 7a which are perpendicular to the direction of rotation or running direction of the embossing roller 2a and / or counterpressure roller 2b. By means of the adjustment aid, the position of the die 4a and / or the male within the respective window area 7a can thus be defined precisely or the degrees of freedom of the die 4a and / or the male part 4b can be defined for the self-alignment set out above. Fig. 7 i corresponds to Fig. 7h with the difference that the male part 4b in the window portion 7a of the positioning aid 7 by means of a

Fastener 9b is attached. The fastening device 9a is preferably a clamp. Furthermore, it is also possible that the die 4a of FIG. 7f is fastened in the window area 7a of the positioning aid 7 by means of a fastening device 9b.

Below the positioning aid 7 and the die 4a and / or male part 4b, the embossing roll 2a and / or the counterpressure roll 2b is arranged, which is not shown in FIGS. 7f to 7i. In particular, therefore, the die 4a and / or male part 4b is applied to the surface of the embossing roll 2a and / or the counterpressure roll 2b in the window region 7a of the positioning aid 7. Preferably, the die 4a and the embossing roller 2a and / or the male part 4b and the counter-pressure roller 2b each represent two different components of the device, so that in particular a quick and easy

Setting and / or conversion of the device can be achieved, since only the small compared to the embossing roller 2a and / or the platen roller 2b die 4a and / or male 4b must be replaced. Advantageously, the die 4a is magnetically fixed on the embossing roll 2a and / or the male die 4b is magnetically fixed on the counterpressure roll 2b, so that in particular the simple and rapid setting up and / or conversion can be further improved. Preferably, the die 4a are arranged on the embossing roll 2a and the male die 4b on the counterpressure roll 2b such that the holding force with which the die 4a is arranged on the embossing roll 2a is higher, preferably by a factor of 1.5 to 5, more preferably by a factor of 2.5 to 3.5 higher is, as the holding force is arranged with the male 4a on the platen roller 2b.

This ensures that the male 4a is less firmly fixed compared to the die 4b. The male part 4b is thus arranged in particular "looser" than the die 4a. It has been shown that by means of such a relatively lower holding force of the male 4b on the platen roller 2b compared to the die 4a on the embossing roll 2a still qualitatively comparable imprints can be achieved in particular with the Hubprägeverfahren, since in particular the male 4b due to the lower holding force

Degrees of freedom such that it can assume the ideal position with respect to the counterpart forming die 4a. As described above, the degrees of freedom may be preferred by means of the adjusting aid 9a

restricted and / or released.

FIGS. 8a to 8c show schematically sectional representations of dies 4a and / or dies 4b.

The female mold 4a shown in FIG. 8a and the female mold 9b shown in FIG. 9b are advantageously designed in multiple layers. Thus, the die 4a and the male 4b include in particular the layers 17a and 17b and the adhesive layer 17c.

The layer 17a in this case has the elevations 18a and / or depressions 18b, which correspond in particular to the embossing relief forms in positive and / or negative form. It is also possible that the elevations and / or depressions represent a pattern, motif or a font. For example, a pattern may be a graphically designed outline, a figurative representation Picture, a symbol, a logo, a portrait and the like. For example, a font may be an alphanumeric character, a text, and the like. With regard to the various embossed relief shapes to be embossed, reference is made to the statements below.

Furthermore, it is advantageous if the elevations 18a have a height of not more than 5.0 mm, preferably of not more than 3.0 mm, more preferably of not more than 1.0 mm, even more preferably of not more than 0.5 mm, and / or if the recesses of the male part have a maximum depth of 5.0 mm, preferably of not more than 3.0 mm, more preferably of not more than 1.0 mm, even more preferably of not more than 0.5 mm.

Preferably, the layer 17a is a metal layer of brass, bronze, copper, nickel, zinc, tin, lead, iron or steel. The metal layer 17a shown in FIGS. 8a and 8b is a layer of brass.

The layer 17b is preferably a metal layer of ferromagnetic materials, in particular comprising iron, ferrites, cobalt or nickel. Further, it is possible that the layer 17b is a steel layer. The layer 17b shown in FIGS. 8a and 8b is a layer of steel.

The layer 17a is preferably a metal layer made of a non-weak or weakly magnetic material and the layer 17b is a metal layer of a magnetic, in particular highly magnetic, material. Thus, it is possible that the layer 17a is a Layer of brass and layer 17b is a steel layer.

Advantageously, in particular, the layer 17b is magnetic.

The thickness of the layer 17a is preferably between 0.5 mm and 2.5 mm, preferably between 0.75 mm and 2 mm, more preferably between 1 mm and 1.75 mm.

Advantageously, the thickness of the layer 17b is between 0.05 mm and 1.5 mm, preferably between 0.1 mm and 1 mm, more preferably between 0.15 mm and 0.5 mm.

For example, in the die 4a shown in Fig. 8a, the thickness of the layer 17a is 0.5 mm, and the thickness of the layer 17b is 0.25 mm, for example. For example, in the case of the male mold shown in Fig. 8b, the thickness of the layer 17a is 0.8 mm, and the thickness of the layer 17b is 0.15 mm, for example.

As shown in FIGS. 8a and 8b, the layers 17a and 17b are preferably firmly connected by means of an adhesive layer 17c. The adhesive layer 17c is advantageously an adhesive or cold adhesive layer. Thus, it is possible that the adhesive layer 17c is a

Two-component adhesive (2K adhesive), in particular comprising epoxy resins, acts. Conveniently, the adhesive layer 17c is an epoxy-based 2K adhesive system, such as the company's Araldite

Fluntsman, Salt Lake City, Utah, USA.

The adhesive layer 17c is preferably a double-sided adhesive tape, which is coated in particular on two sides with a pressure-sensitive adhesive (PSA). such Double-sided adhesive tapes can be produced, for example, by tesa,

Norderstedt, Germany.

Furthermore, the adhesive layer 17c preferably has a layer thickness between 0.01 mm and 0.75 mm, preferably between 0.05 mm and 0.5 mm, more preferably between 0.05 mm and 0.25 mm. For example, in the die 4a shown in Fig. 8a, the thickness of the adhesive layer 17c is 0.05 mm, and in the case of the male die 4b shown in Fig. 8b, the thickness of the adhesive layer 17c is also 0.05 mm.

Preferably, the die 4a and the male part 4b have the same materials and / or the same layer structure, in particular the die 4a and the male part 4b, in particular the elevations 18a and / or depressions 18b, which in particular the embossed relief forms in positive and or negative mold, having layers of the die 4a and the male part 4b, made of metal, in particular made of brass. Thus, it is also possible that the layer 17a of the die 4a and the male part 4b are made of the same metal, preferably brass. It is expedient if the layer 17b, in particular the steel layer, of the die 4a is thicker, preferably by the factor 1, 2 to 3.5, more preferably by the factor 1, 2 to 2.5, thicker than the layer 17b , in particular steel layer, the male 4b. It is also possible that the layer 17b, in particular the steel layer, of the die 4a by at least 0.05 mm, preferably in order

at least 0.1 mm, more preferably by 0.15 mm, thicker than the layer 17b, in particular steel layer, the male part 4b. Through such different thicknesses of the layer 17b of the die 4a and the male part 4b can be achieved that the holding force with which the die 4a, in particular magnetic on the embossing roller 2a is arranged higher than the holding force with which the male part 4b, in particular magnetically, is arranged on the counter-pressure roller 2b.

Furthermore, it is also possible that the die 4a and / or the male part 4b, in particular the layer 17a of the die 4a and / or the male part 4b,

Plastics, in particular photopolymers. Thus, it is also possible for the matrix 4a and / or the male part 4b, in particular the layer of the female mold 4a having the elevations 18a and / or depressions 18b, which in particular correspond to the positive and / or negative molds to be embossed, to be /. or the male part 4b is made of a plastic, in particular of a photopolymer.

It is also possible for the die 4a and the male part 4b, in particular the layer 17a of the die 4a and the male part 4b, to comprise different materials. Thus, it is possible that the die 4a, in particular the layer 17a of the die 4a, made of metal, in particular brass, and the male part 4b, in particular the layer 17a of the male part 4b, made of plastic, in particular of a photopolymer, rubber or rubber is. It is also possible that the elevations 18a and / or depressions 18b, which in particular correspond to the embossing relief molds in positive and / or negative form having layers of the die 4a and the male part 4b are formed of different materials, in particular that the Elevations 18a and / or recesses 18b layer comprising the metal, in particular made of brass, and the elevations 18a and / or recesses 18b having layer of the male part 4b made of plastic, in particular a photopolymer is formed. Such a die 4b is shown in Fig. 8c. The die shown in Fig. 8b comprises the layers 17a, 17b and 17c. The layer 17a is a layer of plastic, in particular a photopolymer. With regard to the configuration of the adhesive layer 17c and the layer 17b, reference is made here to the above statements.

However, it is also possible that the die 4a and / or male 4b

single layer is executed. Preferably, the single-layer matrix 4a and / or the male part 4b is magnetic. Advantageously, the single-layer matrix 4a and / or male part 4b is formed from a magnetic, in particular highly magnetic, material. The monolayer matrix 4a and / or the male part 4b preferably comprises ferromagnetic materials, in particular comprising iron, ferrites, cobalt and / or nickel. Thus, it is possible that the single-layer die 4a and / or the male part 4b is made of steel. The matrix 4a and / or the male part 4b can thus be, in particular, a single-layer steel matrix and / or die.

Even with a single-layer matrix 4a and / or male part 4b, it is advantageous if the matrix 4a is thicker, preferably by a factor between 1.2 and 3.5, more preferably by a factor between 1.2 and 2.5, thicker is as the patrix 4b. It is also possible here for the die 4a to be thicker than the male die 4b by at least 0.05 mm, preferably by at least 0.1 mm, more preferably by at least 0.15 mm.

Preferably, the die 4a has a thickness between 0.1 mm and 5 mm, preferably between 0.5 mm and 3 mm, and / or the male part 4b has a thickness between 0.1 mm and 5 mm, preferably between 0.5 mm and 3 mm, on. FIGS. 9a and 9b show schematically sectional representations of dies 4a and / or dies 4b.

Fig. 9a shows a die 4a, wherein the die 4a is deformed such that the die 4a has a rounding which substantially corresponds to the diameter of an embossing roll 2a, on which the die 4a is arranged. The die 4 a shown in FIG. 9 a preferably has the multilayer structure of the die 4 a shown in FIG. 8 a, which, however, is not shown here in the drawing for the sake of simplicity.

FIG. 9b shows a male part 4b corresponding to the female part 4a of FIG. 9a, the male part 4b being deformed such that the male part 4b has a rounding which substantially corresponds to the diameter of the counterpressure roller 2b on which the male part 4b is arranged.

The curves are preferably produced by bending, in particular by free bending, swaging, swivel bending or rolling rounds.

FIGS. 10a to 10g, 11a to 11e and FIGS. 12a to 12d schematically show sectional views of relief shapes.

The relief forms shown in FIGS. 10a to 10g, 11a to 11e and 12a to 12d can be produced by means of the method for rotary blind embossing and by means of the device for rotary blind embossing. As stated above, depending on the desired relief shape to be embossed, the matrix 4a and the male part 4b here have elevations 18a and / or depressions 18b, which correspond in particular to the relief shapes to be embossed in positive and / or negative form. Thus, in FIGS. 10a to 10g, single-stage relief molds are shown in cross-section, which are raised, that is, the relief molds

shaped in particular according to a flop embossing in the substrate 3. Fig. 10a shows a raised round relief mold, Fig. 10b a raised circular relief shape with outline, Fig. 10c a raised flat relief shape with angular transition, Fig. 10d a raised flat-edged relief shape with outline, Fig. 10e a raised relief shape with rounded Transition, Fig. 10f a raised prismatic relief form with a sharp crest line and Fig. 10g a raised prismatic relief form with a flat crest line.

Further, in Figs. 11a to 11e, single-stage relief shapes are shown in cross-section, which are recessed, i. the relief forms are

shaped in particular according to a stamping in the substrate 3. 11 a shows a recessed round relief form, FIG. 11 b a recessed round relief form with angular transition, FIG. 11 c a recessed flat relief form with rounded transition, FIG. 11 d recessed prismatic relief form with a pointed apex line and FIG. 11 e a deepened prismatic relief form with flat apex line.

Furthermore, in FIGS. 12a to 12d multi-level relief shapes are shown in FIG

Cross-section, which are raised or combined executed raised and recessed, i. the relief forms are in particular according to a

Embossed or imprinted in the substrate 3 according to a Floch embossing and embossing. Fig. 12a shows a raised multi-level relief mold, Fig.

11 b a raised sculptured relief form, FIG. 11 c a multi-level combined raised and recessed relief form, and FIG. 11 d also a multi-level combined raised and recessed relief form. Furthermore, it is also possible to produce, for example, multi-level recessed relief shapes. Continue Further combinations of multi-level, combined raised and recessed relief forms are conceivable.

Under sculptured preferably a relief form is understood, which represents a sculpture, a motif, a pattern or a font or forms.

By means of the method for rotary blind embossing and by means of the device for rotary blind embossing, the relief shapes shown in FIGS. 10a to 10g, 11a to 11e and 12a to 12d can be produced in high quality and in number be understood, under high quality, in particular a comparable with the Flubprägeverfahren embossing result.

Corresponding to the relief forms shown in FIGS. 10a to 10g, 11a to 11e and 12a to 12d, the matrix 4a and the male part 4b have the corresponding elevations 18a, depending on the desired relief shape to be embossed and / or depressions 18b, which correspond in particular to the embossing relief forms in positive and / or negative form.

Thus, it is possible for the elevations 18a and / or depressions 18b of the die 4a and / or the patrice 4b to have a shape selected from the group: round, flat, round-flat, flat-edged, prismatic, prismatic-flat, pointed or mixed forms of these forms.

It is also possible for the elevation 18a and / or recess 19b of the die 4a and / or the piercer 4b to have a multi-level, in particular sculpted, height and / or depth. FIGS. 13a and 13b show methods for producing a template 4a and / or a male part 4b.

As shown in FIG. 13a, it is possible for the elevation 18a and / or recess 18b to be engraved and / or milled by means of a computer-controlled engraving machine and / or by means of a computer-controlled milling machine 19. For this purpose, the relief shape is preferably first defined and designed using a computer 20. The design can be done manually or by means of predetermined relief shapes. Subsequently, based on this design, a data record is preferably generated which contains the relief shape and the data record is transmitted to the computer-controlled engraving machine and / or milling machine 19. Subsequently, the elevations and / or depressions are engraved and / or milled, in particular as a function of the data set in the die 4a and / or male part 4b.

Alternatively, it is also possible for the elevations 18a and / or depressions 18b to be produced photolithographically.

Furthermore, as shown in FIG. 13 b, it is also possible for the elevations 18 a and / or depressions 18 b to be produced by means of a laser 20, in particular by

Laser ablation to be generated.

In the case of laser ablation, the material of the matrix 4a and / or the male part 4b is preferably completely removed and / or ablated.

Preferably, the laser 20 is a gas laser, in particular a CO2 laser, and / or a solid-state laser, in particular a Nd: YAG laser. Advantageously, the laser power is at least 20 W, preferably at least 30 W, more preferably at least 100 W. Further, it is advantageous if the wavelength of the laser 20 is between 9.35 miti and 10.25 miti.

In this case, the laser beam 22 is preferably guided along the matrix 4a and / or the male part by means of deflectable mirrors, in particular by means of a laser scan module, so that the desired elevations 18a and / or depressions 18b are generated. In this case, the beam diameter of the laser 21 in the focal point is in particular between 0.01 mm and 1 mm, preferably between 0.01 mm and 0.2 mm.

Further, in particular in the production of the die 4a and / or male part 4b, it is advantageous if the desired relief shape to be embossed is reduced by a predetermined reduction factor, in particular before the elevations 18a and / or depression 18b are produced in the surface of the die 4a and / or the male 4a become. In particular, the reduction factor is in particular between 0.95 and 1, preferably between 0.9750 and 0.9999, more preferably between 0.98000 and 0.99999, even more preferably between 0.99000 and 0.9999. Advantageously, the predetermined reduction factor in

Depending on the diameter of the embossing roll and / or the

Counterpressure roller determined. Furthermore, it is possible for the predetermined reduction factor to be determined as a function of the embossing length and / or a printing length, in particular on the substrate. In the manufacturing method shown in Figs. 13a and 13b, the predetermined shortening factor for the die 4a is 0.99440 and for the die 4b is 0.99800 at one

Diameter of the embossing roller 2a of 300 mm and a diameter of the counter-pressure roller of 600 mm. Preferably, regions of the at least one die 4a and / or male part 4b, which are not intended to emboss the substrate 3, are removed or

optional. In particular, in this case the male part 4b is removed or removed in such a way that the so-called base of the female part 2a is not embossed into the substrate 3. In this case, the male part 4b is preferably removed or removed by at least 0.2 mm, more preferably by at least 0.3 mm, even more preferably by at least 0.4 mm.

Preferably, the elevations 18a and / or depressions 18b are introduced in flat states of the die 4a and / or the patrix 4b, and the die 4a and / or the patrice 4b are subsequently deformed such that the die 4a and / or the patrice 4b has a rounding, which substantially the diameter of the embossing roll 2a and / or the diameter of the

Counterpressure roller 2b corresponds. Further, it is possible that in a further step, the layer 17b is applied by means of the adhesive layer 17c, wherein the layer 17b preferably already has a corresponding rounding.

LIST OF REFERENCE NUMBERS

1 device

1a, 1 b, 1 c, 1 d workstations

2a embossing roll

2b counterpressure roller

3 substrate

4a template

4b patrix

5a increase of the substrate

5b deepening of the substrate

6 fixing device

7 Positioning aid

7a window area

7ab Width of the window area

7al length of the window area

7b clamping device

7c Width of the positioning aid 7d Length of the positioning aid

7e thickness of the positioning aid

7f increased thickness of the positioning aid

8 leveling layer

9a adjustment aid

9b fastening device

10a, 10b, 10c, 10d, 10e process steps

1 1 transport equipment

12a embossing cylinder 12b impression cylinder

13 section

14 motif

16 area

17a first metal layer

17b second metal layer

17c adhesive layer

18a Increase of female / male 18b Indentation of female / male 19 Engraving machine, milling machine

20 computers

21 lasers

22 laser beam

Claims

1. A method for rotatively blind embossing of a substrate (3) in one

Workstation (1a) comprising an embossing roll (2a) and a

Counterpressure roller (2b), the method comprising the following steps, which are carried out in particular in the following order: a) providing the substrate (3);

b) blank embossing of the substrate (3) by means of at least one on the embossing roller (2a) arranged die (4a) and at least one of the

Counter-pressure roller (2b) arranged Patrize (2b).

2. The method according to claim 1,

characterized,

in that in step b) the substrate (3) is blind embossed such that the substrate (3) has at least one elevation (5a) and / or depression (5b).

3. The method according to claim 2,

characterized,

in that the at least one elevation (5a) and / or depression (5b) of the substrate (3) in step b) has a height and / or depth of at least 0.05 mm, preferably at least 0.1 mm, more preferably at least 0 , 5 mm, is generated.

4. The method according to any one of claims 1 to 3,

characterized,

in that the method further comprises the following steps, which are carried out in particular before step a) and / or step b):

- Fixing the at least one die (4a) on the embossing roller (2a) and / or the at least one male part (4b) on the counter-pressure roller (2b) by means of a fixing device. (6)

5. The method according to any one of claims 1 to 3,

characterized,

- Providing a positioning aid (7) comprising at least one

Window area (7a);

- Positioning the positioning aid (7) on the embossing roller (2a) and / or the counter-pressure roller (2b);

Arranging the at least one die (4a) and / or male part (4b) in the at least one window area (7a) of the positioning aid (7).

6. The method according to claim 5

characterized, in that when arranging the at least one die (4a) and / or male part (4b) in the at least one window area (7a) of the positioning aid (7), the at least one die (4a) and / or male part (4b) is adjusted by means of an adjustment aid (9a ) in which at least one window area (7a) is adjusted.

7. The method according to claim 6,

characterized,

the adjusting aid is arranged in such a way that the at least one die (4a) and / or male part (4b) is movable, in particular flexible, at least in one direction.

8. The method according to any one of claims 5 to 7,

characterized,

in that when arranging the at least one die (4a) and / or male part (4b) in the at least one window region (7a) of the positioning aid

(7) the at least one die (4a) and / or male part (4b) is fastened by means of a fastening device (9b) in the at least window region (7a).

9. The method according to any one of claims 5 to 8,

characterized,

in that the at least one die (4a) and / or male part (4b) of the at least one die area (7a) of the at least one die area (7a)

Positioning aid (7) is deformed such that the at least one die (4a) and / or male (4b) has a rounding, which in

Substantially corresponds to the diameter of the embossing roller (2a) and / or the diameter of the counter-pressure roller (2b).

10. The method according to any one of claims 5 to 9,

characterized,

in that the positioning aid (7) is tensioned onto the embossing roller (2a) and / or the counterpressure roller (2b), in particular that the

Positioning aid (7) on the embossing roller (2a) and / or the

Counterpressure roller (2b) is biased that the positioning aid (7) has a rounding, which is substantially equal to the diameter of

Embossing roller (2a) and / or the diameter of the counter-pressure roller (2b) corresponds.

11. The method according to any one of the preceding claims,

characterized,

in that the method further comprises the following step, which is carried out in particular before step a) and / or step b):

- Inserting at least one leveling layer (8) between the at least one die (4a) and the embossing roller (2a) and / or the at least one male part (4b) and the counter-pressure roller (2b).

12. The method according to any one of the preceding claims,

characterized,

in that the at least one die (4a) is magnetically fixed on the embossing roll (2a) and / or the at least one male die (4b) is magnetically fixed on the counterpressure roll (2b).

13. The method according to any one of the preceding claims,

characterized,

in that the at least one die (4a) on the embossing roll (2a) and the at least one male die (4b) on the counterpressure roll (4b) in such a way that the holding force with which the at least one die (4a) is arranged on the embossing roll (2a) is arranged to be higher, preferably by a factor of 1.5 to 5, more preferably by a factor of 2.5 to 3.5 is higher than the holding force with which the at least one male part (4b) on the counter-pressure roller (2b) is arranged.

14. The method according to any one of the preceding claims,

characterized,

the embossing roller (2a) and the counterpressure roller (2b) are driven in opposite directions at corresponding rotational speeds.

15. The method according to claim 14,

characterized,

the at least one die (4a) and the at least one male part (4b) engage each other in such a way that the substrate (3) located between the at least one die (4a) and the at least one male part (4b), in particular in one Overlap region of the at least one die (4a) and the at least one male part (4b), is embossed.

16. The method according to claim 15,

characterized,

in that the substrate (3) is embossed in such a way that the deviations between the embossments of each circulation amount to less than 2%, preferably less than 1%, even more preferably less than 0.05%, percent.

17. The method according to any one of the preceding claims, characterized

that the method further comprises the following steps:

- Supplying the substrate (3) to the workstation (1 a) comprising the embossing roller (2a) and the counter-pressure roller (2b).

18. The method according to any one of the preceding claims,

characterized,

in that the method further comprises at least one of the following steps carried out in one or more further workstations (1 b, 1 c, 1 d):

- Printing the substrate (3);

- severing the substrate (3);

- Grooving and / or folding of the substrate (3).

19. The method according to any one of the preceding claims,

characterized,

that the substrate (3) is processed continuously.

20. The method according to any one of the preceding claims,

characterized,

in that in step a) the substrate (3) is provided as sheet material.

21. The method according to claim 20,

characterized,

the deviations between the embossings on the sheets of the sheet material (3) are less than 2% per cent, preferably less than 1% percent, even more preferably less than 0.05% percent.

22. The method according to any one of claims 20 or 21,

characterized,

in that the method processes more than 8000 sheets per hour, preferably more than 10,000 sheets per hour, more preferably more than 12,000 sheets per hour, even more preferably more than 14,000 sheets per hour, of the substrate (3) provided as sheet material.

23 device (1) for rotatively blind embossing a substrate (3), wherein the device comprises a workstation (1 a), which comprises an embossing roller (2a) and a counter-pressure roller (2b), and wherein at least one die (4a) on the Embossing roller (2a) is arranged and at least one male part (4b) on the counter-pressure roller (2b) is arranged.

24. Device (1) according to claim 23,

characterized,

the at least one die (4a) is introduced directly as at least one elevation (18a) and / or recess (18b) into the surface of the embossing roll (2a) and / or that the at least one piercer (4b) is directly introduced as at least one elevation ( 18a) and / or recess (18b) in the surface of the counter-pressure roller (2b) is introduced.

25. Device (1) according to claim 23,

characterized,

in that the at least one die (4a) is embodied as at least one elevation (18a) and / or depression (18b) in the surface of a stamping cylinder (12a). is introduced, which is arranged on the embossing roller (2a) and / or that the at least one male (4b) as at least one elevation (18a) and / or recess (18b) is introduced into the surface of a counter-pressure cylinder (12b), which the counter-pressure roller (2b) is arranged.

26. Device (1) according to claim 23,

characterized,

in that the at least one die (4a) on the embossing roller (2a) and / or the at least one male part (4a) on the counter-pressure roller (2a) is firmly fixed by means of a fixing device (6).

27. Device (1) according to claim 23,

characterized,

in that the device (1) has a positioning aid (7) with at least one window area (7a), the positioning aid (7) being arranged on the embossing roller (2a) and / or the counterpressure roller (2b) and the at least one die (4a). and / or male part (4b) in which at least one window area (7a) of the positioning aid (7) is arranged.

28. Device (1) according to claim 27,

characterized,

in that the positioning aid (7) has two or more window areas (7a), wherein the two or more window areas (7a) are arranged according to a one-dimensional or two-dimensional grid.

29. Device (1) according to one of claims 27 or 28

characterized, the outline of the at least one window area (7a) of the

Positioning aid (7) substantially the outline of the at least one die (4a) and / or male (4b) corresponds.

30. Device (1) according to one of claims 27 to 29,

characterized,

in that the at least one window area (7a) of the positioning aid (7) is larger than the at least one die (4a) and / or male part (4b), in particular that the distance from each edge of the at least one window area (7a) to the at least one die (4a) and / or male

(4b) is at least 0.1 mm, preferably 0.2 mm, more preferably 0.3 mm.

31. Device (1) according to one of claims 27 to 30,

characterized,

in that the positioning aid (7) comprises metals, in particular copper, nickel, chromium, iron, zinc, tin, lead or alloys of such metals.

32. Device (1) according to one of claims 27 to 31,

characterized,

that the positioning aid (7) is magnetically formed.

33. Device (1) according to one of claims 27 to 32,

characterized,

in that the positioning aid (7) has a thickness (7e) of at least 0.25 mm, preferably of at least 0.5 mm, more preferably of at least 0.75 mm.

34. Device (1) according to one of claims 27 to 33,

characterized,

the positioning aid (7) has an increased thickness (7f) in a region (16) around the at least one window region (7a) in comparison to the remaining thickness (7e) of the positioning aid (7), in particular that the positioning aid (7) in a region (16) around the at least one window region (7a) has a thickness (7f) increased by at least 0.1 mm, preferably by at least 0.2 mm, more preferably by at least 0.3 mm, compared to remaining thickness (7e) of the positioning aid (7).

35. Device (1) according to claim 34,

characterized,

the region (16) around the at least one window region (7a) has a width of at least 0.2 mm, preferably of at least 0.5 mm, more preferably of at least 1.5 mm.

36. Device (1) according to one of claims 27 to 35,

characterized in that the positioning aid (7) has a width (7c) of at least 250 mm, preferably of at least 500 mm, more preferably of at least 750 mm, and a length (7d) of at least 500 mm, preferably at least 750 mm, more preferred of at least 1000 mm, and / or that the at least one window area (7a) has a width (7ab) of at least 5 mm, preferably at least 10 mm, more preferably at least 20 mm, and a length (7al) of at least 10 mm, preferably at least 20 mm, more preferably of at least 100 mm.

37. Devices (1) according to one of claims 27 to 36, characterized

in that the positioning aid (7) is stretched on the embossing roller (2a) and / or the counterpressure roller (2b), in particular that the

Positioning aid (7) on the embossing roller (2a) and / or the

Counterpressure roller (2b) is stretched, that the positioning aid (7) has a rounding which substantially corresponds to the diameter of the embossing roller (2a) and / or the diameter of the counter-pressure roller (2b).

38. Device (1) according to one of claims 27 to 37,

characterized,

in that the at least one die (4a) and / or male part (4b) is adjustable in the at least one window region (7a) of the positioning aid (7a) by means of an adjusting aid (9a).

39. Device (1) according to claim 38,

characterized,

in that the adjusting aid is arranged such that the at least one die and / or male is movable, in particular flexible, at least in one direction.

40. Device (1) according to one of claims 27 to 39,

characterized,

in that the at least one die (4a) and / or male part (4b) is fastened in the at least one window area (7a) of the positioning aid (7) by means of a fastening device (9b).

41. Device (1) according to one of claims 27 to 40,

characterized,

in that the at least one die (4a) and the embossing roll (2a) and / or that the at least one male part (4b) and the counterpressure roll (2b) represent two different components of the device (1), in particular wherein the at least one die (4a) and / or male part (4b) in which at least one window region (7a) of the positioning aid (7) is applied to the surface of the embossing roller (2a) and / or the counterpressure roller (2b).

42. Device (1) according to one of claims 23 to 41,

characterized,

in that at least one compensation layer (8) is arranged between the at least one die (4a) and embossing roll (2a) and / or the at least one male part (4b) and the counterpressure roll (2b).

43. Device (1) according to one of claims 23 to 42,

characterized,

the embossing roller (2a) and / or the counterpressure roller (2b) is magnetically formed, in particular that the embossing roller (2a) and / or the counterpressure roller (2b) is designed as a magnetic cylinder.

44. Device (1) according to one of claims 23 to 43,

characterized,

in that the at least one die (4a) and / or male part (4b) is deformed in such a way that the at least one die (4a) and / or male part (4b) has a curve which substantially corresponds to the diameter of the die Embossing roll (2a) and / or substantially the diameter of the

Counterpressure roller (2b) corresponds.

45. Device (1) according to one of claims 23 to 44,

characterized,

the at least one die (4a) is arranged on the embossing roll (2a) and the at least one male die (4b) is arranged on the counterpressure roll (2b) in such a way that the holding force with which the at least one die (4a) presses on the embossing roll (2a) is higher, preferably by a factor of 1, 5 to 5 is higher, more preferably by a factor of 2.5 to 3.5 is higher than the holding force with which the at least one male part (4b) on the counter-pressure roller (2b) is arranged.

46. Device (1) according to one of claims 23 to 45,

characterized,

in that the embossing roll (2a) and the counterpressure roll (2b) can be driven in opposite directions at mutually corresponding rotational speeds.

47. Device (1) according to claim 46,

characterized,

in that the at least one die (4a) and the at least one male part (4b) are arranged in such a way that they mesh with each other in such a way that the substrate located between the at least one die (4a) and the at least one male part (4b) ( 3), in particular in an overlapping region of the at least one die (4a) and the at least one male part (4b), can be embossed.

48. Device (1) according to one of claims 23 to 47,

characterized,

in that the ratio of the diameter of the embossing roll (2a) to the diameter of the counterpressure roll (2b) is 1 to 2, preferably 1 to 1.

49. Device (1) according to one of claims 23 to 48,

characterized,

in that the device (1) further comprises one or more further workstations (1 b, 1 c, 1 d) for printing on the substrate (3) and / or for severing the substrate (3) and / or for reaming and / or folding the substrate (3). 3).

50. Device (1) according to claim 49,

characterized,

in that the one or more further workstations (1 b, 1 c, 1 d) are arranged before and / or after the workstation (1 a) comprising the embossing roller (2a) and the counterpressure roller (2b).

51. Die (4a) and / or male part (4b) for use in a device (1) according to one of claims 23 to 50.

52. female part (4a) and / or male part (4b) according to claim 51,

characterized,

the matrix (4a) and / or the male part (4b) comprise metals, in particular brass or other copper alloys, and / or plastics, in particular photopolymers.

53. female part (4a) and / or male part (4b) according to one of claims 51 or 52, characterized

in that the female mold (4a) and / or male part (4b) is multi-layered, in particular that the female part (4a) and / or male part (4b) has a first layer (17a), preferably a first metal layer, a second layer (17b), preferably a second metal layer, and an adhesive layer (17c) comprises.

54. female part (4a) and / or male part (4b) according to claim 53,

characterized,

the first layer (17a) is a first metal layer, in particular a brass layer, and the second layer (17b) is a second metal layer, in particular, a steel layer.

55. female part (4a) and / or male part (4b) according to one of claims 53 or 54, characterized

the second layer (17b), in particular the second metal layer, of the die (4a) is thicker, preferably thicker by a factor between 1, 2 and 3.5, more preferably by a factor between 1, 2 and 2.5 as the second layer (17b), in particular the second metal layer, the male part (4b).

56. female part (4a) and / or male part (4b) according to one of claims 53 or 54, characterized

the second layer (17b), in particular the second metal layer, of the die (4a) is thicker than the second layer (17b) by at least 0.05 mm, preferably by at least 0.1 mm, more preferably by 0.15 mm , in particular second metal layer, the male part (4b).

57. female part (4a) and / or male part (4b) according to one of claims 51 to 56, characterized

in that the die (4a) and the male part (4b) have the same materials and / or the same layer structure, in particular that the die (4a) and the male part are made of metal, in particular of brass.

58. female part (4a) and / or male part (4b) according to one of claims 51 to 56, characterized

in that the die (4a) and / or male part (4b) have different materials, in particular that the die (4a) is made of metal, in particular brass, and the male part (4b) is made of plastic, in particular of a photopolymer, rubber or rubber ,

59. female part (4a) and / or male part (5b) according to one of claims 51 to 58, characterized

in that the die (4a) has a thickness of between 0.1 mm and 5 mm, preferably between 0.5 mm and 3 mm, and the male die (4b) has a thickness of between 0.1 mm and 5 mm, preferably between 0.5 mm and 3 mm.

60. female part (4a) and / or male part (4b) according to one of claims 51 to 59, characterized

in that the die (4a) and / or the male part (4b) has at least one elevation (18a) and / or depression (18b), which corresponds in particular to the relief form to be embossed in positive and / or negative form.

61. female part (4a) and / or male part (4b) according to claim 60,

characterized, in that the at least one elevation (18a) of the matrix (4a) and / or the male part (4b) has a height of not more than 5.0 mm, preferably of not more than 3.0 mm, more preferably of not more than 1.0 mm, even more preferred of at most 0.5 mm, and / or that the at least one recess (18b) of the die (4a) and / or the male part (4b) has a depth of not more than 5.0 mm, preferably of not more than 3.0 mm preferably of not more than 1, 0 mm, more preferably of not more than 0.5 mm.

62. female part (4a) and / or male part (4b) according to one of claims 60 or 61, characterized

in that the at least one elevation (18a) and / or depression (18b) of the matrix (4a) and / or the patrix (4b) has a shape selected from the group: round, flat, round-flat, flat-edged, prismatic , pointed or mixed forms of these forms.

63. female part (4a) and / or male part (4b) according to one of claims 51 to 62, characterized

in that the die (4a) and / or male part (4b) is rounded, in particular that the die (4a) and / or male part (4b) is deformed such that the die (4a) and / or male part (4b) has a rounding which substantially corresponds to the diameter of an embossing roller (2a) and / or the diameter of a counterpressure roller (2b) on which the die (4a) and / or male part (4b) is arranged.

64. A method for producing a template (4a) and / or male part (4b) according to any one of claims 51 to 63, wherein the method comprises the following steps: - Defining the shape of at least one elevation (18a) and / or recess (18b) in the surface of the die (4a) and / or male (4b), in particular by means of software;

- Producing the at least one elevation (18a) and / or recess (18b) in the surface of the die (4a) and / or male (4b).

65. The method according to claim 64,

characterized,

in that the method further comprises the following step, which is carried out in particular before the step of generating the at least one elevation (18a) and / or depression (18b) in the surface of the matrix (4a) and / or male (4b):

- Reducing the defined shape of the at least one elevation (18a) and / or recess (18b) in the surface of the die (4a) and / or male (4b) by a predetermined reduction factor, wherein the

Reduction factor in particular between 0.95 and 1, preferably between 0.9750 and 0.9999, more preferably between 0.98000 and 0.99999, even more preferably between 0.99000 and 0.9999.

66. The method according to any one of claims 64 or 65,

characterized,

the at least one elevation (18a) and / or depression (18b) are engraved and / or milled, in particular by means of a computer-controlled engraving machine and / or milling machine (19).

67. The method according to any one of claims 64 or 65,

characterized, the at least one elevation (18a) and / or depression (18b) are produced photolithographically.

68. The method according to any one of claims 64 or 65,

characterized,

in that the at least one elevation (18a) and / or depression (18b) are produced by means of a laser (21), in particular by laser ablation.