Method for producing adhesive rolls loaded with adhesive elements and device for the method

Abstract

The invention relates to a method for producing adhesive rolls loaded with adhesive elements (10), comprising the method steps: a) producing or providing a dispensing material strip (12) in a dispensing arrangement (14), wherein the dispensing arrangement (14) comprises a first drive unit, wherein the dispensing arrangement (14) is configured to separate the adhesive elements (10) from the first release material (16) in a dispensing area (18) and to dispense them from the dispensing arrangement (14), b) producing or providing a receiving arrangement (20), comprising: iv) a web-shaped second release material (28), which is partially wound on a feed roll (22) and fastened at one end to a take-up roll (24), and is guided in a guide arrangement (26) through a take-up area (30), v) a second drive unit for driving the take-up roll (24), and vi) an electronic detector arrangement (32),and e) detecting the radius of the feed roll (22) wrapped with the second release material (28) and / or the take-up roll (24) wrapped with the second release material (28) by means of the electronic detector arrangement (32), wherein the second drive unit is controlled and / or regulated as a function of the detected radius of the feed roll (22) wrapped with the second release material (28) and / or as a function of the detected radius of the take-up roll (24) wrapped with the second release material (28).

Description

The invention relates to a method for producing adhesive rolls fed with adhesive elements, in particular in the refilling of cassette units, and to a feeding device for use in such a method. The use of a corresponding feeding device in the refilling of emptied adhesive rolls with adhesive elements, in particular in the refilling of cassette units, is also disclosed.The use of adhesive elements is nowadays an important constituent of many modern production processes. Corresponding adhesive elements are used not only for fastening components to a substrate, but also serve in particular for closing openings in a substrate. Such openings are usually present as a result of the production and represent possible weak points in the later product, through which moisture or impurities can pass, for example. The use of suitable adhesive elements, which are usually tacky on one side, for closing corresponding openings in substrates represents a simple and time-efficient and cost-effective solution for closing corresponding openings and for preventing unwanted penetration of impurities, wherein in the prior art already nowadays such adhesive elements are frequently used for this purpose which, as a result of their production process, are also referred to as diecuts.In principle, it would be conceivable to place the corresponding adhesive elements manually on a substrate. However, in the course of the progressive automation and in view of a continued interest in an as error-prone and efficient method procedure as possible, automated application devices have been developed which serve for the application of adhesive elements to a substrate to be bonded. In this case, various requirements are placed on corresponding application devices. Thus, corresponding application devices must in particular enable reliable and reproducible application of adhesive elements to the substrates, wherein a high throughput is desirably to be achieved.To optimize the handling efficiency and to avoid complicated feed systems, application devices with an integrated dispenser arrangement for adhesive elements have been designed, in which the provision of the adhesive element and the application device can be carried out jointly, for example as part of an end effector of a robot head. Corresponding application devices with an integrated dispenser device have in this case frequently applied to a refill system for efficient supply of adhesive elements, in which adhesive rollers supplied with adhesive elements are inserted into the dispenser arrangement, which rollers can be removed again and replaced after application of the adhesive elements contained on the adhesive roller. Many modern application devices have placed concepts with so-called refill cassettes in which the adhesive rollers supplied with adhesive elements are usually arranged in a housing. In many cases, corresponding refill cassettes also comprise an integrated guide arrangement, for example consisting of guide rollers and deflection elements, which optimally guide the material band located in the refill cassettes and make it possible to unwind the material band in the refill cassette with an external drive unit. The use of corresponding refill cassettes usually allows a particularly rapid, reliable and error-prone supply of the application device with the adhesive elements required for application, wherein the refill cassettes are also advantageous in particular during storage and transport.Despite the advantages associated with the use of replaceable adhesive rolls supplied with adhesive elements and, in particular, the use of refill cartridges, their use is sometimes also considered disadvantageous from other points of view. In particular, the adhesive rolls freed of adhesive elements, i.e. mostly the emptied carrier roll and the remaining unwound liner, frequently accumulate after use as waste, which can be recycled only very expensively, in particular in older systems. In this respect, the handling of emptied refill cassettes is perceived as more advantageous in many cases because of the integrated guide arrangement and a roll for winding up the unrolled liner, which roll is usually present. However, the recycling or refilling of refill cassettes is frequently complicated, which is regularly caused by the housing of the refill cassettes, which in many cases cannot easily be opened from the outside, for example if a emptied adhesive tape roll is to be removed and replaced by a new adhesive roll. In addition, in many cases, the new material strip must be threaded into the guide arrangement of the refill cassette and connected to the take-up roll. For these reasons, refilling refill cartridges is often not time-efficient and / or cost-effective and in many cases difficult to automate.In addition to the above-described problem, the time- and cost-effective production of fresh adhesive rolls supplied with adhesive elements, which can be used directly in application devices or in a refill cassette, for example, is also perceived as challenging in many cases. The application devices mostly used as end effectors are regularly limited with regard to the maximum weight which they may have, so that the adhesive rolls used, which are supplied with adhesive elements, can mostly only have a limited width. In many cases, such application devices are designed for adhesive tape rolls which have only a row of adhesive elements on the release liner.In order to solve the above-described problems, methods and apparatuses for producing adhesive rolls supplied with adhesive elements have been developed which-referred to in simplified terms-are based on transferring adhesive elements from a donor roll from a donor arrangement into a receiving arrangement in which a web-shaped separating material is guided between a feed roll and a receiving roll on which the transferred adhesive elements can be arranged. With these systems it is advantageously possible to feed a plurality of receiving arrangements with adhesive elements which are only single-track even from wide mother rolls with a plurality of rows of adhesive elements. These methods are particularly suitable for refilling cassette units which can be used in suitable end effectors during the application of the adhesive elements to substrates. In the intended use, the web-shaped separating material placed in the cassette units is successively unwound, freed from the separating elements and wound onto a further roll. Such empty cassette units can subsequently be filled again in corresponding devices, simply inverting the running direction of the web-shaped separating material, in which the adhesive elements are transferred from the dispenser unit to the web-shaped separating material, which is then wound up on the first roll together with the received adhesive elements until the cassette unit is again in the ready-to-use starting state.The above-described loading of adhesive rolls with adhesive elements, in particular in the embodiment of refillable cassette units, presupposes that the web-shaped separating material running between the two rolls is rewound from one roll to the other during the refilling. Although excellent results can be obtained most often with the developed devices, the present inventors have identified potential for improvement in some places. In practice, it has been found that the correct guidance of the web-shaped separating material when rewinding the separating material from one roll to the other is not trivial. In order to ensure a precise arrangement of the transferred adhesive elements in the desired supplied adhesive roll, it is essential to precisely control the web speed of the web-shaped separating material during the charging process and in most cases to keep this web speed as constant as possible in order to achieve an equidistant positioning of the adhesive elements on the separating material.However, in practice, this is very challenging. Rewinding the web-shaped separating material from one roll to the other results in the radius of the rolls changing dynamically, which is made more difficult in particular because the accommodated adhesive elements with their own thickness also contribute to an additional increase in the radius of the accommodating roll. With a continuous rotational speed of the rollers, the web speed of the web-shaped separating element guided between the rollers changes as a function of the radius, whereby a precise process control is considerably more difficult and a precise setting of the transmission ratio of the drive units used is necessary.In addition to the problems in the control or regulation of the web speed, it is also found that the tensile force experienced by the web-shaped separating element also changes with the radius. As a result, in the case of inadequate control of the process, an increasing tensile force can lead to mechanical failure of the web-shaped separating elements, which, in particular in the case of frequent refilling, as is desired in principle for cassette units, for example, can lead over time to a too high failure risk, as a result of which the economic and ecological advantages which are connected in principle with the use of such cassette units are reduced in a disadvantageous manner.In the course of development, the inventors have recognized that the need for precise positioning of the adhesive elements on the release material of the adhesive roll is less difficult to place in many cases in mass applications in which, for example, numerous adhesive rolls are filled by a single multi-row parent roll than in the case of adhesive rolls for special applications, in particular for test and / or pilot rows, and in the processing of adhesive elements of complex shape. In such cases, the feeding will in many cases take place only from a single-track parent roll, wherein more complex spacings on the release liner to be accommodated also have to be set, for example if the distance between the adhesive elements for adaptation to a downstream optimized process control is not selected equidistantly, but rather has to be set precisely.The primary object of the present invention was to eliminate or at least reduce the disadvantages of the prior art described above.In particular, it was the object of the present invention to specify an advantageous method for producing adhesive rolls fed with adhesive elements, which method can be used in particular in the refilling of cassette units.In this case, it was an important object of the present invention that the method to be specified should allow precise monitoring of the positioning of the adhesive elements on the receiving separating material, in particular the relative spacing of the adhesive elements, in order to enable, for example, optimum equidistant positioning or a targeted preset spacing of the adhesive elements reliably and with high process reliability.In addition, it was an object of the invention that the method to be specified should ensure reliable control of the tensile forces acting on the web-shaped separating material in order to avoid overloading of the separating material even after a plurality of refilling processes, with the result that the durability of the web-shaped separating materials can be increased, in particular in the case of use of refilling cassette units.In this respect, it was an object of the present invention that adhesive rollers or refill cassettes supplied with adhesive elements should be producible in a time- and cost-effective manner with the method to be specified.In this connection, it was a supplementary object of the present invention that adhesive rolls supplied with adhesive elements should be able to be produced with the method to be specified, which rolls are suitable for use in application apparatus designed as end effectors, wherein this production should desirably also be possible starting from mother rolls with narrow production widths.It was an additional object of the present invention to provide an advantageous charging device for use in the method to be specified and to specify the use of a corresponding charging device in the refilling of cassette units.The inventors of the present invention have now found that the above-described objects can be achieved if an electronic detector arrangement is used in the receiving arrangement, in addition to the feed roller, the take-up roller, the guide arrangement and the web-shaped second separating material and the drive unit for driving the take-up roller, which electronic detector arrangement is configured to detect the radius of one or both of the rollers wound with the separating material, if the drive unit of the receiving arrangement is controlled or regulated as a function of the detected radius, as defined in the claims.By detecting the radius of one or both of the rollers involved in rewinding the separating material, the change in the radius and the influence on the web speed or the acting tensile forces can be advantageously taken into account, so that the drive unit can be operated as a function of this information in order to compensate for the changes occurring.The above objects are thus achieved by the subject matter of the invention as defined in the claims. Preferred embodiments according to the invention are evident from the dependent claims and the following explanations.Such embodiments, which are referred to below as preferred, are combined in particularly preferred embodiments with features of other embodiments referred to as preferred. Combinations of two or more of the embodiments referred to below as particularly preferred are thus very particularly preferred. Also preferred are embodiments in which a feature of one embodiment designated as preferred to any extent is combined with one or more further features of other embodiments designated as preferred to any extent. Features of preferred charging devices and uses result from the features of preferred methods.Particularly preferred embodiments of the invention are disclosed in the exemplary embodiments. Particularly preferred embodiments of the invention have correspondingly two or more, preferably three or more, very particularly preferably four or more, of the preferred features of the invention disclosed below, which are also realized in the exemplary embodiments.The invention relates in particular to a method for producing adhesive rolls supplied with adhesive elements, in particular for refilling cassette units, comprising the method steps: a) producing or providing a donor material strip in a dispenser arrangement, wherein the donor material strip comprises a plurality of adhesive elements arranged on a web-shaped first separating material, wherein the dispenser arrangement comprises a first drive unit for driving the first separating material in the dispenser arrangement, wherein the dispenser arrangement is configured to separate the adhesive elements from the first separating material in a dispensing region and to dispense them from the dispenser arrangement, b) producing or providing a receiving arrangement, comprising:i) a feed roller,ii) a take-up roller,iii) a guide arrangement,iv) a web-shaped second separating material, which is partially wound onto the feed roll and fastened at one end to the take-up roll, wherein the second separating material is arranged between the feed roll and the take-up roll in the guide arrangement and is guided through a take-up region of the take-up arrangement,v) a second drive unit for driving the take-up roller, andvi) an electronic detector arrangement, wherein the receiving arrangement is configured to detect the radius of the feed roller wound with the second separating material and / or of the receiving roller wound with the second separating material by means of the electronic detector arrangement,c) guiding the first separating material in the dispenser arrangement, wherein the first separating material is guided through the dispensing region at a dispensing speed v S wherein adhesive elements are separated from the first separating material and are dispensed in the dispensing region, d) rolling up the second separating material on the take-up roller, wherein the second separating material is guided through the take-up region at a take-up speed v A wherein the adhesive elements dispensed by the dispenser arrangement are arranged in the take-up region on the second separating material, and e) detecting the radius of the feed roller wound around with the second separating material and / or of the take-up roller wound around with the second separating material by means of the electronic detector arrangement, wherein the second drive unit is controlled and / or regulated depending on the detected radius of the feed roller wound with the second separating material and / or depending on the detected radius of the take-up roller wound with the second separating material.The method according to the invention serves for the production of adhesive rolls charged with adhesive elements. Corresponding supplied adhesive rolls can be used directly in application devices, for example, or can be used for the production or refilling of cassette units. In addition, the method according to the invention advantageously makes it possible to directly refill cassette units, i.e. the previously emptied cassette units can be refilled with the method according to the invention, so that the adhesive roll charged with adhesive elements is produced directly in the cassette unit.In method step a), a so-called donor material strip is initially introduced, which comprises the adhesive elements, which are to be transferred to the downstream receiving arrangement for producing the adhesive rolls supplied with adhesive elements.The donor material strip is preferably provided in wound form, wherein the person skilled in the art also refers here to a so-called mother roll. Corresponding parent rolls are usually produced with large production widths, whereby it becomes possible to provide a large number of adhesive elements per parent roll. However, the method according to the invention is particularly suitable, according to the inventors' judgment, for high-precision applications in which, in practice, mostly narrower parent rolls are used. A method according to the invention is thus preferred, wherein the donor material strip is provided, preferably on a mother roll, wherein the mother roll is particularly preferably rotatably mounted on a first roll receptacle. Particular preference is given here to a method according to the invention, wherein the parent roll has a width of 100 mm or less, preferably 80 mm or less. In this case, a method according to the invention is particularly preferred additionally or alternatively, wherein the adhesive elements are arranged on the donor material strip in exactly one row.The method according to the invention is advantageously suitable for a wide range of possible adhesive elements. With regard to the industrial relevance of corresponding adhesive elements, however, the method according to the invention is particularly suitable for the processing of so-called diecuts, wherein the processing of pressure-sensitive adhesive elements is of relevance in particular. A method according to the invention is therefore relevant for substantially all embodiments, wherein the adhesive elements are diecuts.For most cases, a method according to the invention is also expedient, wherein the adhesive elements have a closed geometric shape, wherein the adhesive elements are, for example, oval, triangular, rectangular or circular, preferably circular, adhesive elements, wherein the adhesive elements can also have in particular rounded corners.Relevant for substantially all embodiments is a method according to the invention, wherein the adhesive elements comprise a carrier layer and an adhesive layer connected thereto, wherein the adhesive elements are arranged with the adhesive layer on the first release material.In practice, a method according to the invention is furthermore customary, wherein the adhesive elements are pressure-sensitive adhesive elements, and / or wherein the adhesive layer comprises a pressure-sensitive adhesive, wherein the adhesive layer preferably consists of a pressure-sensitive adhesive.For the adhesive layer of the adhesive elements, the skilled worker can resort to customary adhesives known in the field of adhesive technology, for example poly(meth)acrylate- and / or rubber-based systems. The corresponding adhesive layer is arranged in a manner customary in industry on a carrier layer which is usually formed from a plastic. Even if it is theoretically possible to process adhesive elements that are tacky on both sides using the method according to the invention, the method according to the invention will be used in practice primarily for adhesive elements that are tacky on one side. By way of example, a method according to the invention is provided, wherein the carrier layer comprises one or more materials selected from the group consisting of polyethylene, polypropylene, cyclic olefin copolymers, polyvinyl chloride, polyester, ethylene vinyl alcohol, polyvinylidene chloride, polyvinylidene fluoride, polyacrylonitrile, polycarbonate, polyamide, polyethersulfone and polyimide, preferably selected from the group consisting of polyethylene, polypropylene and polyethylene terephthalate, wherein the carrier layer preferably consists of these materials. For the vast majority of cases, a method according to the invention is preferred, wherein the side of the adhesive elements facing away from the adhesive layer is formed by the carrier layer.The adhesive elements are arranged on the donor material web on a release material. Corresponding web-shaped release materials, which are also generally referred to as liners, are well known to the person skilled in the art from the field of adhesive technology and are referred to herein as release materials because the adhesive elements arranged thereon can easily be separated from the surfaces as a result of reduced adhesion to the surface. The functionality of the release materials can be achieved by conventional release layers known to the skilled person, which are applied to the surface of the release materials, where they cover, for example, the base layer made of plastic or paper. In other words, it is usually a method according to the invention, wherein the web-shaped first separating material and / or the web-shaped second separating material, preferably all the web-shaped separating materials, are liners. Typical here is a method according to the invention, wherein the web-shaped first release material and / or the web-shaped second release material, preferably all web-shaped release materials, is coated on the side facing the adhesive elements with a release layer, preferably with a silicone release layer, wherein the silicone release layer can preferably be produced by crosslinking a crosslinkable silicone system comprising one or more polysiloxanes.The donor material strip is manufactured or provided in a so-called dispenser arrangement. This dispenser arrangement is configured to separate the adhesive elements from the web-shaped first separating material by suitable means and to dispense them from the dispenser arrangement. The region of the dispenser arrangement in which the adhesive elements separated from the release material are dispensed is referred to as dispensing region within the scope of the present invention. In practice, the dispenser arrangement will comprise, in addition to the parent roll which comprises the donor material strip, a guide device for guiding the donor material strip in the dispenser arrangement and a take-off unit, for example a take-up roll for the web-shaped first separating material. The donor material strip extends, spanned by the guide elements of the guide device, which can be guide rollers, for example, from the mother roller to the take-off unit and thereby passes through the dispensing region. The skilled person understands that with this construction, behind the dispensing region in the web direction, only the web-shaped first separating material, which is usually completely freed from adhesive elements, is present.The passage of the donor material strip through the donor arrangement is effected or conveyed within the scope of the present invention by a first drive unit, which can be an electric motor, for example. The drive unit is particularly preferably a component of the pull-off unit and drives, for example, a roller arrangement. The web speed of the first separating material in the dispenser arrangement can be influenced via the first drive unit, which is referred to as dispensing speed v S in the context of the present invention. The first drive unit in the pull-off unit can optionally be combined with a further drive unit which drives the mother roll.Relevant for most applications is a method according to the invention, wherein the dispenser arrangement comprises a guide system which is configured to guide the removed donor material strip through the dispensing region, preferably from the mother roll to the removal unit. By way of example, a method according to the invention is provided, wherein the guide system comprises one or more guide elements, preferably guide rollers.A method according to the invention is preferred, wherein the dispenser arrangement comprises a pull-off unit comprising the first drive unit for pulling off the donor material strip, preferably for pulling off the donor material strip from the mother roll. In addition or alternatively, a method according to the invention is preferred, wherein the first drive unit is an electric motor.By way of example, a method according to the invention is provided, wherein the pull-off unit comprises a rotatably mounted winding roller for winding up the first separating material freed of adhesive elements. A method according to the invention is preferred, wherein the take-off unit is configured to take off the first separating material at the dispensing speed v S preferably at a constant dispensing speed v S.The inventors propose that the desired functionality in the dispensing region can be realized particularly efficiently by a dispensing edge, wherein in addition to a movable dispensing edge known to the person skilled in the art, in particular a pendulum dispensing edge, in particular also a stationary dispensing edge can be used. The term dispensing edge is clear to the person skilled in the art and the concept of a dispensing edge is well known to the person skilled in the art of adhesive technology. The material strip with the web-shaped first separating material and the adhesive elements arranged thereon is fed onto the dispensing edge, wherein the web-shaped first separating material is sharply guided around this dispensing edge at the end of the dispensing edge. Due to the inherent stiffness of the adhesive element, which is greater than the adhesion to the web-shaped release material, the adhesive element cannot follow this movement of the release material and is rather successively released from the release material, the further the material strip is guided over the dispensing edge.A corresponding dispensing edge ensures an advantageous tension of the web-shaped first separating material in the dispensing region and allows the adhesive elements guided over the edge of the dispensing edge to be separated from the separating material without the use of transfer elements, whereby in particular the combination of a circulating conveying element disclosed below, but also a direct transfer, become possible. A method according to the invention is preferred accordingly, wherein the dispenser arrangement comprises a dispensing edge, preferably a stationary dispensing edge, in particular a knife edge, in the dispensing region, wherein the dispenser arrangement is configured such that the strip of donor material guided in the dispenser arrangement can be guided over the positionally fixed dispensing edge in such a way that the adhesive elements are separated from the web-shaped first separating material in the dispensing region and the adhesive elements are conveyed beyond the positionally fixed dispensing edge.Even if it is possible in principle, for example by using a stationary dispensing edge, to dispense the adhesive elements directly from the dispensing region, it is also conceivable, according to the inventors's judgment, for the adhesive elements, after being detached from the web-shaped first separating material, to be initially transferred to a revolving conveying element, for example a conveying belt, which then forwards the adhesive elements, for example again at a dispensing edge. In this case, it is a method according to the invention, wherein the dispenser arrangement comprises a revolving conveying element having an adhesion-reduced surface in the dispensing region, wherein the dispenser arrangement is configured such that an adhesive element conveyed beyond the dispensing edge is transferred with the adhesive layer to the adhesion-reduced surface of the conveying element, wherein the revolving conveying element preferably comprises a revolving conveyor belt or a conveyor belt, particularly preferably a conveyor belt.The above-defined configuration of the surface of the revolving conveying element as an adhesion-reduced surface is in this case mandatory for the person skilled in the art in the knowledge of implementing the invention, since the latter knows the concept of adhesion-reduced surfaces from many other areas of adhesive technology, where it is regularly used, for example, in connection with typical liners. The skilled worker will adapt the extent of the adhesion reduction to the properties of the adhesives used and to the structural nature of the dispensing edge of the conveying element in order to allow efficient transfer. By way of example, a method according to the invention is thus provided, wherein the adhesion-reduced surface is coated with a release layer, preferably with a silicone release layer, wherein the silicone release layer can preferably be produced by crosslinking a crosslinkable silicone system comprising one or more polysiloxanes.In method step b), a receiving arrangement is produced or provided, in which the production of adhesive rolls supplied with adhesive elements will take place. This take-up arrangement comprises a feed roll comprising a wound web-shaped second release material which is guided from the feed roll to the take-up roll by the guide arrangement which may in turn comprise guide rollers or other guide elements. This makes it possible to pass the web-shaped second separating material through the receiving arrangement by winding it on the receiving roller and unwinding it accordingly from the feed roller. According to the invention, the web-shaped second separating material passes through a so-called receiving region of the receiving arrangement. In the context of the present invention, this refers to that part of the receiving arrangement in which the adhesive elements dispensed by the dispenser arrangement are transferred to the receiving arrangement and are accordingly received by the latter. The skilled person is to this extent aware that, within the scope of the method according to the invention, the web-shaped second separating material, which does not yet comprise any adhesive elements, is guided through the receiving region, is fitted with adhesive elements there and is subsequently wound onto the receiving roller. A method according to the invention is preferred here, wherein the guide arrangement comprises one or more guide elements, preferably guide rollers.The production of the receiving arrangement will be relevant here in particular for those methods according to the invention in which adhesive rollers supplied with adhesive elements are produced, which rollers are subsequently intended to be further processed as adhesive rollers, for example by inserting them into an application device or for filling a cassette unit in a downstream filling method. In these cases, the receiving arrangement is produced, for example, by inserting a feed roller with fresh web-shaped second separating material and a roller suitable for receiving the adhesive roller into a device provided for this purpose, which device comprises, for example, the guide arrangement and the corresponding drive for the respective rollers. The web-shaped second separating material can then be threaded into the guide arrangement and is connected to the take-up roll in a manner such that it can be rolled up thereon. When producing corresponding adhesive rolls, the web-shaped second separating material is advantageously provided by a large roll of material, with which a plurality of adhesive rolls can be produced one after the other, so that after reaching a sufficiently filled adhesive tape roll, the liner can be severed and the adhesive roll produced can be removed. The free end of the web-shaped second release material may then be connected to a new take-up roll to restart the process. In this embodiment, a method according to the invention is preferred, wherein the produced adhesive rolls supplied with adhesive elements are produced as separate adhesive rolls. Preference is given here to a process according to the invention, wherein the process additionally comprises the following process step:f) severing the web-shaped second separating materials of the receiving arrangements when predetermined filling levels of the receiving rollers are reached and the respective receiving roller is removed from the receiving arrangements in order to obtain the adhesive rollers supplied with adhesive elements.The above-characterized preferred method according to the invention, with which separate adhesive rolls are obtained, can be carried out efficiently with a feeding device in which the dispenser arrangement to be used according to the invention is combined with specific components of the receiving arrangement. The corresponding components of the receiving arrangement which are surrounded by the charging device are the parts which in practice are usually not regularly to be changed, for example the corresponding roller receptacles for inserting the feed roller or the receiving roller, and the necessary guide arrangement. Preference is accordingly given to a process according to the invention, wherein the process is carried out with a charging device, wherein the charging device comprises:u) the dispenser assembly, andv) two or more roller receiving assemblies comprising:i) a roller receptacle for rotatably mounted receiving of the feed roller,ii) a roller receptacle for rotatably mounted receiving of the receiving roller,iii) the guide arrangement,v) the second drive unit for driving the take-up roller, andvi) the electronic detector arrangement.As an alternative to the above-described production of separate adhesive rolls, the direct production of adhesive rolls supplied with adhesive elements can be seen in the interior of cassette units, in particular during the refilling of recycled cassette units. In these cases, the pick-up assemblies are constituted by cassette units comprising the feed roller, the pick-up roller, the guide assembly and the web-shaped second separating material. Corresponding cassette units can be inserted into a suitable cassette-based application device after refilling.Filled cassette units which can be used in an application device comprise the web-shaped second separating material which is supplied with adhesive elements and are successively emptied during use in the application device, wherein the web-shaped second separating material is wound on the feed roller which, during emptying, performs the reversed function, so to speak, in comparison with refilling. After the cassette unit has been completely emptied, the web-shaped second separating material is thus present wound on the feed roller, but is still connected to the take-up roller. The emptied cassette unit is thus advantageously situated precisely in the state which it predicts for use as a receiving arrangement in the method according to the invention, wherein the running direction of the rollers is inverted between the application in the application device and the use in the refilling method.Thus, a method according to the invention is also particularly preferred, wherein the receiving arrangement is a cassette receiving arrangement with a cassette unit arranged therein, comprising:b.i) a recording position,b.ii) a cassette unit arranged reversibly and non-destructively interchangeably in the receiving position, comprising:the feed roller,the take-up roller,the guide arrangement, andthe web-shaped second separating material partially wound on the feed roll and fixed at one end to the take-up roll, the second separating material being disposed between the feed roll and the take-up roll in the guide arrangement and being guided by a cassette receiving region of the cassette unit,b.iii) the second drive unit, wherein the cassette receiving arrangement is configured such that the receiving roller of the cassette unit arranged in the receiving position can be driven by the second drive unit,b.iv) the electronic detector arrangement, wherein the cassette receiving arrangement is configured to detect, by means of the electronic detector arrangement for the cassette unit arranged in the receiving position, the radius of the feed roller wound with the second separating material and / or of the receiving roller wound with the second separating material using a detection method, preferably optical detection method.The cassette receiving arrangement is configured such that the rollers of the cassette unit arranged therein can be driven with the drive units of the cassette receiving arrangement. As a result of the above construction, a method according to the invention is preferred, wherein the feed roller and the take-up roller in the cassette unit are designed as non-driven rollers.For a secure positioning of the cassette unit in the cassette receiving arrangement, the inventors propose that the cassette receiving arrangement can be provided with positioning aids and / or a mechanism for the intermediate fixing of the cassette units. Accordingly, a method according to the invention is preferred, wherein the cassette receiving arrangement comprises one or more positioning elements, wherein the positioning elements are configured to stabilize a cassette unit in the cassette receiving arrangement in a predetermined position, wherein the positioning elements are preferably configured to fix a cassette unit arranged in the cassette receiving arrangement in a reversibly and non-destructively releasable manner.To improve the handling properties, corresponding cassette units are usually provided with a housing which is intended to protect the internal components from direct access from the outside and from environmental influences. The skilled person understands that the web-shaped second separating material must be accessible in the receiving region, however, so that adhesive elements provided by the dispenser arrangement can be transferred to the web-shaped second separating material at this point. In this respect, the inventors have succeeded in identifying a particularly advantageous configuration of the cassette unit. This is because it is placed as part of the guide arrangement in the receiving region on a so-called cassette dispensing edge. This is a part of the guide arrangement which ensures that the web-shaped second separating material is guided around an edge in the receiving region, with a deflection of 90° or more usually being sought. By means of a corresponding cassette dispensing edge, an advantageous web tension can be realized for refilling in the receiving region, to which web tension the adhesive elements can be transferred particularly well. When the running direction is inverted in use in the application device, the cassette dispensing edge additionally brings about or conveys the detachment of the adhesive elements from the release liner and thereby allows advantageous dispensing of the adhesive elements from the cassette unit. This dispensing takes place with the adhesive layer downwards, so that, in use in the application device, the adhesive elements can be dispensed from the cassette unit with the adhesive layer downwards, by means of which the adhesive elements can be transferred, for example, to the adhesion-reduced surface of a revolving conveying element, for example a suction belt, by which the adhesive elements can be picked up particularly efficiently by an application element and placed on the substrate to be adhered. A method according to the invention is therefore preferred, wherein the cassette units comprise a housing, wherein the housing is preferably designed such that the web-shaped second separating material can be supplied with adhesive elements from the outside essentially exclusively in the receiving region. In addition, a method according to the invention is preferred, wherein the cassette units comprise a stationary cassette dispensing edge as part of the guide arrangement, wherein the cassette units are configured such that a material tape provided on the receiving roller, which comprises a plurality of adhesive elements arranged with the adhesive layer on the web-shaped second separating material, can be guided via the cassette dispensing edge to the feed roller in such a way that the adhesive elements can be separated from the separating material in the receiving region and can be output from the cassette unit.For driving the take-up roller, the take-up arrangement comprises a second drive unit which can set the take-up roller in rotation, as a result of which the web-shaped second separating material can be drawn off the feed roller. A method according to the invention is preferred in a manner analogous to the first drive unit, wherein the second drive unit is an electric motor.In addition, a further drive unit can also be provided in the receiving arrangement, which drives the feed roll and thus enables an adjustment of how much resistance the feed roll opposes the unwinding. Preference is accordingly given to a method according to the invention additionally comprising as part of the receiving arrangement:vii) a third drive unit for driving the feed roller.A method according to the invention is particularly preferred here, wherein the third drive unit is an electric motor.In the method according to the invention, the transfer of the adhesive elements takes place starting from the produced or provided dispenser and receptacle arrangements, wherein this comprises the method steps c) and d). On the side of the dispenser arrangement, the dispenser material strip is namely guided through the dispensing region in order to separate the first separating material from the adhesive elements there. In the receiving arrangement, on the other hand, the web-shaped second separating material is unwound from the feed roll and guided through the receiving region in order to receive the adhesive elements there and then to be wound onto the receiving roll. When the donor material strip is guided through the dispensing region, adhesive elements are dispensed from the dispensing arrangement, wherein the dispensed adhesive elements are transferred into the receiving region of the receiving arrangement and are placed there on the web-shaped second separating material. The skilled person understands in this respect that the method steps c), d) and also the step e described further below) are usually carried out at least partially simultaneously, wherein in particular a nearly or even completely simultaneous and thus continuous operation is also possible. Preference is thus given to a process according to the invention, wherein process steps c) and / or d) and / or e), preferably process steps c) and d) and e), are carried out at least partially simultaneously, particularly preferably substantially completely simultaneously.In order to ensure that even with adhesive elements that adhere only weakly to the web-shaped second separating material, they do not become detached from the separating material in an undesired manner after the transfer or in order to stabilize the transfer step, the inventors propose that pressing elements, for example pressing rollers, can also be provided, which press the transferred adhesive elements onto the web-shaped second separating material in order to ensure sufficient adhesion. A method according to the invention is preferred accordingly, wherein the receiving arrangement comprises one or more pressing elements, preferably pressing rollers, in the region of the receiving region, wherein the adhesive elements dispensed by the dispenser arrangement are pressed onto the second separating material in the receiving region with the one or more pressing elements when arranged on the second separating material. Particularly preferred is a method according to the invention, wherein the pressing elements are designed to be reversibly and non-destructively adjustable, so that the pressing pressure exerted by the pressing elements can be adjusted, preferably with an electronic data processing device, wherein the pressing pressure is particularly preferably adjusted as a function of the thickness of the adhesive elements.An essential aspect of the present invention now consists in that the receiving arrangement comprises an electronic detector arrangement by means of which it can detect the radius of the feed roller wound around with the second separating material or of the receiving roller wound around with the second separating material, wherein the radius correlates with the filling level of the respective roller. In this case, it is in principle sufficient to determine the radius of one of the rollers, since, in the event of sufficient information about the length and thickness of the separating material used in combination with information about the thickness of the adhesive elements used, the radius of the other roller can likewise be calculated in the event of doubt. For this case, a method according to the invention is preferred because of the lower demands made on the measurement technology, wherein the receiving arrangement is configured to detect only one of the radii of the feed roller or of the receiving roller by means of the electronic detector arrangement and to calculate the radius of the other roller, preferably with an electronic data processing device.However, it is particularly preferred, with a view to a lower computing effort and a particularly high process reliability, to determine directly the radius and thus the filling level of the two rollers. A method according to the invention is therefore particularly preferred, wherein the receiving arrangement is configured to detect, by means of the electronic detector arrangement, the radius of the feed roller wound around with the second separating material and of the receiving roller wound around with the second separating material by means of the detection method, preferably the optical detection method.For the specified purpose, the detector arrangement comprises at least one detector unit, wherein it is explicitly preferred to use at least two detector units, each assigned to one of the rollers, for the implementation of the radius determination on both rollers. A method according to the invention is therefore preferred, wherein the electronic detector arrangement comprises one or more, preferably two or more, detector units, preferably optical detector units.Although it would be conceivable to determine the radius using a mechanical method, for example using a spring-mounted measurement sensor which contacts the respective roller in the circumferential direction and from whose position it would be possible to infer the radius of the roller, the inventors would find it preferable to use contactless, in particular optical methods, with a view to performing the method as efficiently as possible and to obtain precise data and to increase the durability of the device for substantially all embodiments. A method according to the invention is thus preferred, wherein the electronic detector arrangement is configured to detect the radius of the feed roller wound around with the second separating material and / or of the take-up roller wound around with the second separating material using a contactless method, preferably an optical method. In addition or alternatively, a method according to the invention is preferred, wherein the receiving arrangement is configured to detect the radius of the feed roller wound with the second separating material and / or of the receiving roller wound with the second separating material by means of the electronic detector arrangement using an optical detection method.The inventors have identified two particularly advantageous configurations for the optical detector units. On the one hand, the radius of the wound-on rollers can be determined by using modern image evaluation software by means of a camera spaced apart from the roller in the axial direction, wherein the determination can additionally be facilitated by using a size reference installed in the vicinity of the respective roller.However, an even more advantageous embodiment according to the inventors' judgment can alternatively be achieved with optical distance sensors. If such optical distance sensors are fixedly installed in the charging device, so that they can determine the distance to the circumferential surface of the roller along the radial direction of the roller, the radius and thus the filling level of the roller can be reliably determined from the known distance between the roller and the detector unit. Corresponding optical distance sensors are in principle known to the person skilled in the art and are commercially available from various manufacturers, wherein, according to the inventors' judgment, the use of laser-based as well as ultrasound-based distance sensors is particularly preferred, wherein the inventors are based in particular on ultrasound-based distance sensors from the standpoint of safety in terms of work. Thus, a method according to the invention is preferred first, wherein the one or more optical detector units are selected from the group consisting of cameras and distance detectors, preferably selected from the group consisting of cameras, laser-based distance sensors and ultrasound-based distance sensors, particularly preferably ultrasound-based distance sensors. Particularly preferred as a first variant is a method according to the invention, wherein the one or more optical detector units are selected from the group consisting of distance detectors, wherein the one or more optical detector units are spaced apart from the feed roll or the take-up roll in the radial direction, so that the one or more optical detector units can determine the distance along the radial direction from the roll wound with the second separating material. Particularly preferred in this case is additionally or alternatively, as a second variant, a method according to the invention, wherein the one or more optical detector units are selected from the group consisting of cameras, wherein the one or more optical detector units are spaced apart from the feed roller or the take-up roller in the axial direction, such that the one or more optical detector units can record an image of the side of the corresponding roller facing in the axial direction, wherein the determination of the radius is preferably effected relative to a size scale.If the inherently preferred optical detector units are combined with the particularly preferred embodiment of the use of cassette units, reliable detection of the radius of the rollers can be made more difficult by the housing of the cassette units. Even if it would theoretically be possible to rely on optical detection methods which can penetrate a typical cassette housing with the radiation used, for example X-ray-based methods, this is not practical with regard to numerous factors, in particular with regard to the costs required for this and the resulting problems in terms of operating safety. To solve the problem, the inventors propose that the housing of the cassette unit can instead be provided with an additional recess, through which the radius determination is possible by optical methods. In the case of a camera, this can be, for example, an elongate recess which runs in the housing in the radial direction, whereas an optical distance measurement benefits from a recess which is arranged in the radial direction largely parallel to the outer lateral surface of the roller. Thus, a method according to the invention is preferred first, wherein the housing comprises one or more detection recesses which detect the detection of the radius of the feed roller wound around with the second separating material and / or of the take-up roller wound around with the second separating material by means of an optical detection method by means of the electronic detector arrangement. Particularly preferred is a method according to the invention, wherein the one or more detection recesses run at least partially parallel to the radial direction or orthogonally to the radial direction, preferably orthogonally to the radial direction, of the respective roller.An essential aspect of the present invention is now that at least the second drive unit is controlled and / or regulated as a function of one or both of the detected radii, so that the deviations arising as a result of the change in the radius can be compensated in a desired manner, wherein it is in each case particularly preferred not only to control, but also to regulate, as a function of both input parameters. A method according to the invention is thus preferred, wherein the second drive unit is controlled and / or regulated as a function of the detected radius of the feed roller wound with the second separating material and as a function of the detected radius of the take-up roller wound with the second separating material, and / or wherein the second drive unit is controlled and regulated as a function of the detected radius of the feed roller wound with the second separating material and / or as a function of the detected radius of the take-up roller wound with the second separating material. A method according to the invention is thus particularly preferred, wherein the second drive unit is controlled and regulated depending on the detected radius of the feed roller wound around with the second separating material and depending on the detected radius of the take-up roller wound around with the second separating material.A method according to the invention is preferred in an analogous manner, wherein the third drive unit is controlled and / or regulated as a function of the detected radius of the feed roller wound around with the second separating material and as a function of the detected radius of the take-up roller wound around with the second separating material, and / or wherein the third drive unit is controlled and regulated as a function of the detected radius of the feed roller wound around with the second separating material and / or as a function of the detected radius of the take-up roller wound around with the second separating material. A method according to the invention is particularly preferred accordingly, wherein the third drive unit is controlled and regulated depending on the detected radius of the feed roller wound around with the second separating material and depending on the detected radius of the take-up roller wound around with the second separating material.The control or regulation can be executed, for example, in such a way that a predetermined recording speed is reliably maintained despite the change in radii. A method according to the invention is preferred accordingly, wherein the second drive unit is controlled and / or regulated as a function of the detected radius of the feed roller wound with the second separating material and / or as a function of the detected radius of the take-up roller wound with the second separating material, in order to maintain a predetermined take-up speed v A. In addition or alternatively, a method according to the invention is preferred, wherein the take-up speed v A is in the range from 0.1 to 3.5 m / s, preferably in the range from 0.5 to 2.0 m / s, particularly preferably in the range from 0.7 to 1.5 m / s.An important role here is also the control of the tensile stress experienced by the second separating material. This can be adjusted advantageously in particular if the feed roller is also provided with a drive or at least comprises a brake. A method according to the invention is therefore preferred, wherein the second drive unit is controlled and / or regulated as a function of the detected radius of the feed roller wound with the second separating material and / or as a function of the detected radius of the take-up roller wound with the second separating material, in order to control the tensile load experienced by the second separating material, preferably in order to keep the tensile load experienced by the second separating material below a predefined limit value, particularly preferably in order to keep the tensile load experienced by the second separating material substantially constant. In addition or alternatively, a method according to the invention is preferred, wherein the third drive unit is controlled and / or regulated as a function of the detected radius of the feed roller wound with the second separating material and / or as a function of the detected radius of the take-up roller wound with the second separating material, preferably in order to control the tensile load experienced by the second separating material, preferably in order to keep the tensile load experienced by the second separating material below a predefined limit value, particularly preferably in order to keep the tensile load experienced by the second separating material substantially constant.Although it would theoretically be possible to preset the dispensing speed v S to the dispenser arrangement and to align the receiving speed v A thereto, the inventors would find it preferable if the dispenser arrangement or its first drive unit is operated with respect to the dispensing speed v S in such a way that the receiving speed v A is used as an initial value to preset the dispensing speed v S in order to maintain the desired synchronization. In this case, it is advantageously possible to set a speed difference between the dispensing speed v S and the take-up speed v A whereby the spacing of the adhesive elements on the second separating material can be changed with respect to the spacing on the mother roll in order to adapt this advantageously to the respective requirements of the downstream application process. A method according to the invention is thus preferred, wherein the second drive unit is controlled and / or regulated as a function of the detected radius of the feed roller wound with the second separating material and / or as a function of the detected radius of the take-up roller wound with the second separating material, in order to set a predetermined relative speed v R= v A- v S. In addition or alternatively, a process according to the invention is preferred, wherein the dispensing speed v S is in the range from 0.1 to 3.5 m / s, preferably in the range from 0.5 to 2.0 m / s, particularly preferably in the range from 0.7 to 1.5 m / s. In addition or alternatively, a method according to the invention is again preferred, wherein the quotient of the take-up speed v A divided by the dispensing speed v S is in the range from 1 to 2, preferably in the range from 1.02 to 1.5, particularly preferably in the range from 1.04 to 1.2.It can be seen as an advantage of the method according to the invention that it is particularly easy and efficient to automate. The skilled person understands in this respect that for this purpose an electronic data processing device will mostly be used in order to cause or to transport the control of the method. In preferred embodiments, this electronic data processing device is part of the charging device. A method according to the invention is therefore preferred, wherein the charging device comprises an electronic data processing device for controlling the method. In addition or alternatively, a method according to the invention is also preferred, wherein the control and / or regulation of the second drive unit and / or of the third drive unit, preferably of all drive units, is carried out by an electronic data processing device.In the light of the above, the invention also relates to a charging device for use in a method according to the invention, comprising: A) a dispenser arrangement comprising:A.i) a first roller receptacle for rotatably mounted receiving a mother roller comprising a donor material strip, wherein the donor material strip comprises a plurality of adhesive elements arranged on a web-shaped first separating material,A.ii) a pulling unit for pulling the donor material strip from the mother roll, comprising the first drive unit,A.iii) a guiding system configured to guide the unwound donor material web from the mother roll through the dispensing area, andB) a cartridge receiving assembly comprising:B.i) a receiving position for reversibly and non-destructively replaceable receiving of a cassette unit, which comprises:the feed roller,the take-up roller,the guide arrangement, andthe web-shaped second separating material partially wound on the feed roll and fixed at one end to the take-up roll, the second separating material being disposed between the feed roll and the take-up roll in the guide arrangement and being guided by a cassette receiving region of the cassette unit,B.ii) the second drive unit, wherein the cassette receiving arrangement is configured such that the receiving roller of a cassette unit arranged in the receiving position can be driven by the second drive unit, andB.iii) the electronic detector arrangement, wherein the cassette receiving arrangement is configured to detect, by means of the electronic detector arrangement for a cassette unit arranged in the receiving position, the radius of a feed roller wound with second separating material and / or of a receiving roller wound with second separating material using a detection method, preferably optical detection method,wherein the feeding device is configured to control and / or regulate the second drive unit depending on the detected radius of the feed roller wound with the second separating material and / or depending on the detected radius of the take-up roller wound with the second separating material of a cassette unit arranged in the take-up position.Also disclosed in this connection is the use of a charging device according to the invention in the refilling of emptied adhesive rolls with adhesive elements, in particular in the refilling of cassette units.Preferred embodiments of the invention are explained and described in more detail below with reference to the enclosed figures. The following are shown: FIG. 1 shows a schematic illustration of the components used in a method according to the invention in a first preferred embodiment; and FIG. 2 shows a schematic illustration of the components used in a method according to the invention in a second preferred embodiment.FIGS. 1 and 2 each schematically show the components used in a method according to the invention for producing adhesive rolls fed with adhesive elements 10 in two preferred embodiments with preferred feed devices.In the left-hand part of the figures, the dispenser arrangement 14 is shown in each case, in which a dispenser material strip 12 which comprises a multiplicity of adhesive elements 10 on a first separating material 16 is provided on a mother roll 48, wherein only a part of the adhesive elements 10 is visualized for reasons of clarity.The donor material strip 12 provided by the mother roll 48 is guided by means of the guide elements of a guide system 46 to a take-off unit 34, which is driven by an electric motor acting as a first drive unit and is configured to draw the donor material strip 12 or the first separating material 16 through the donor arrangement 14 at a constant dispensing speed v S.When the donor material strip 12 is guided through the donor arrangement 14, the latter passes through the dispensing region 18, which in the example shown is embodied with a dispensing edge 36. In this dispensing region 18, the adhesive elements 10 are separated from the first separating material 16 by a sharp deflection of the first separating material 16 so that they can be dispensed from the dispenser arrangement 14. The charging devices of FIGS. 1 and 2 differ with regard to the configuration of the dispensing region 18. while the dispensing of the adhesive elements 10 in FIG. 1 takes place directly at the dispensing edge 36, a revolving conveying element 38 which is designed as a conveyor belt with an adhesion-reduced surface is also interposed in FIG. 2 in order to temporarily take over the adhesive elements 10 dispensed at the dispensing edge 36.In the right-hand part of FIGS. 1 and 2, the receiving arrangement 20 is depicted, which is provided to receive the adhesive elements 10. In the preferred embodiments shown, the receiving arrangement 20 is designed as a cassette receiving arrangement in which a cassette unit 40 to be refilled is arranged in the cassette receiver in such a way that it can be exchanged reversibly and non-destructively, in which it is fixed by positioning elements in a predefined position in which in particular the non-driven rollers of the cassette unit 40 can be driven by means of suitable contact elements, in particular pins, with the drive units of the receiving arrangement 20. For reasons of clarity, FIGS. 1 and 2 in this case show in particular the cassette unit 40 which comprises the feed roller 22, the take-up roller 24 and the web-shaped second separating material 28, which is guided between the feed roller 22 and the take-up roller 24 by means of the guide arrangement 26 and in the process runs through a cassette dispensing edge which ensures optimum guidance of the second separating material 28 in the take-up region 30, with the result that the adhesive elements 10 can be taken over particularly easily at this point. In order to convey the transfer process, a pressing element 42 is also provided in FIG. 2, which is designed as a pressing roller and presses the adhesive elements 10 transferred to the second separating material 28 onto the second separating material 28.In the example shown in FIGS. 1 and 2, the pick-up arrangement 20 comprises two further electric motors, which are used as a second drive unit for driving the pick-up roller 24 or as a third drive unit for driving the feed roller 22.The basic method now runs in such a way that the first separating material 16 in the dispenser arrangement 14 is guided through the dispensing region 18 at a dispensing speed v S in order to separate the adhesive elements 10 from the first separating material 16 and to dispense them in the dispensing region 18. At the same time, the rolling-up of the second separating material in the receiving arrangement 20 takes place on the receiving roller 24, wherein the second separating material 28 is guided at a receiving speed v A through the receiving region 30 in order to receive the adhesive elements 10 dispensed by the dispenser arrangement 14.In order to be able to control or regulate the recording speed v A, at which the dispensing speed v S is also oriented in the example shown, particularly precisely, and in particular to optimally set the transmission ratio between the second drive unit and the third drive unit, the charging device used comprises an electronic detector arrangement 32.As is clearly evident in FIGS. 1 and 2, the electronic detector arrangement 32 in the example shown comprises a first detector unit 44 aand a second detector unit 44 b, which are each designed as optical distance detectors. In the embodiments shown, these are ultrasonic-based distance detectors, which are each arranged spaced apart in the radial direction at a known distance from the respective roller and which can determine the radius of the respective roller from the detected distance. In order to enable the interaction with the optical detector units 44 a, 44 b, the cassette unit 40 comprises in its housing 50 two detection recesses which, in the example shown, each run orthogonally to the radial direction of the corresponding roller and ensure the necessary detection path.The illustrated charging devices of FIGS. 1 and 2 are controlled and regulated by an electronic data processing device, not illustrated, depending on the detected radius of the feed roller 22 wound around with the second separating material 28 and depending on the detected radius of the take-up roller 24 wound around with the second separating material 28, wherein the method control by the electronic data processing device is selected in particular such that the tensile load on the second separating material 28 always remains below a predetermined limit value while the take-up speed v A is kept constant, namely at a value which is somewhat greater than the dispensing speed v S of the dispenser arrangement 14, in order to set in the refilled cassette unit 40 a somewhat greater distance between the adhesive elements 10, which ensures reliable separation of the adhesive elements 10 in the later application process.Since the diameter of the rollers in the cassette unit 40 changes depending on the fill level of the cassette unit 40, the transmission ratio between the two drive motors of the cassette unit 40 also changes dynamically during the filling of the cassette unit 40. Thereby, the second separating material 28 in the cassette unit 40 can be moved securely and constantly at the desired linear speed. The pressure roller ensures that sufficient wetting of the adhesive elements on the second separating material 28 is ensured so that the adhesive elements 10 remain on the second separating material 28 and do not fall down. The position or pressure of the pressing element 42, which is preferred for all embodiments, can be set flexibly depending on the thickness of the adhesive elements 10 in order to ensure the desired pressing pressure.List of reference characters10 Adhesive element 12 Donor material strip 14 Donor arrangement 16 First separating material 18 Dispensing region 20 Receiving arrangement 22 Feed roller 24 Receiving roller 26 Guide arrangement 28 Second separating material 30 Receiving region 32 Detector arrangement 34 Pull-off unit 36 Dispensing edge 38 Revolving conveying element 40 Cassette unit 42 Pressing element 44 a- b Units 46 Guide system 48 Mother roller 50 Housing

Claims

Method for producing adhesive rolls supplied with adhesive elements (10), comprising the method steps: a) producing or providing a donor material strip (12) in a dispenser arrangement (14), wherein the donor material strip (12) comprises a plurality of adhesive elements (10) arranged on a web-shaped first separating material (16), wherein the dispenser arrangement (14) comprises a first drive unit for driving the first separating material (16) in the dispenser arrangement (14), wherein the dispenser arrangement (14) is configured to separate the adhesive elements (10) from the first separating material (16) in a dispensing region (18) and to dispense them from the dispenser arrangement (14), b) producing or providing a receiving arrangement (20) comprising: i) a feed roll (22), ii) a receiving roll (24), iii) a guide arrangement (26), iv) a web-shaped second separating material (28), which is partially wound onto the feed roll (22) and is fastened at one end to the take-up roll (24), wherein the second separating material (28) is arranged between the feed roll (22) and the take-up roll (24) in the guide arrangement (26) and is guided through a take-up region (30) of the take-up arrangement (20), v) a second drive unit for driving the take-up roll (24), and vi) an electronic detector arrangement (32), wherein the take-up arrangement (20) is configured to detect by means of the electronic detector arrangement (32) the radius of the feed roll (22) wound with the second separating material (28) and / or of the take-up roll (24) wound with the second separating material (28), c) guiding the first separating material (16) in the dispenser arrangement (14), iv), wherein the first separating material (16) is guided through the dispensing region (18) at a dispensing speed v S wherein adhesive elements (10) are separated from the first separating material (16) and are dispensed in the dispensing region (18), d) rolling up the second separating material (28) on the take-up roll (24), wherein the second separating material (28) is guided through the take-up region (30) at a take-up speed v A wherein the adhesive elements (10) dispensed by the dispenser arrangement (14) are arranged in the take-up region (30) on the second separating material (28), and e) detecting the radius of the feed roll (22) wound around with the second separating material (28) and / or of the take-up roll (24) wound around with the second separating material (28) by means of the electronic detector arrangement (32), wherein the second drive unit is controlled and / or regulated depending on the detected radius of the feed roller (22) wound with the second separating material (28) and / or depending on the detected radius of the take-up roller (24) wound with the second separating material (28).The method of claim 1, wherein the donor material ribbon (12) is provided on a parent roll (48).The method of claim 2, wherein the parent roll (48) has a width of 100 mm or less, and / or wherein the adhesive elements (10) are arranged on the donor material web (12) in exactly one row.Method according to any one of claims 1 to 3, wherein the dispenser arrangement (14) comprises a pulling unit (34), comprising the first drive unit, for pulling off the dispenser material strip (12).Method according to one of claims 1 to 4, wherein the dispenser arrangement (14) comprises a dispensing edge (36) in the dispensing region (18).Method according to claim 5, wherein the dispenser arrangement (14) comprises a revolving conveying element (38) having an adhesion-reduced surface in the dispensing region (18), wherein the dispenser arrangement (14) is configured such that an adhesive element (10) with the adhesive layer conveyed beyond the dispensing edge (36) is transferred to the adhesion-reduced surface of the conveying element (38).Method according to one of claims 1 to 6, wherein the receiving arrangement (20) is a cassette receiving arrangement with a cassette unit (40) arranged therein, comprising: b.i) a receiving position, b.ii) a cassette unit (40) arranged reversibly and non-destructively interchangeably in the receiving position, comprising: - the feed roller (22), - the receiving roller (24), - the guide arrangement (26), and - the web-shaped second separating material (28), which is partially wound onto the feed roller (22) and is fastened at one end to the receiving roller (24), wherein the second separating material (28) is arranged between the feed roller (22) and the receiving roller (24) in the guide arrangement (26) and is guided through a cassette receiving region of the cassette unit (40), b.iii) the second drive unit, wherein the cassette receiving arrangement is configured to receive the second drive unit, the take-up roller (24) of the cassette unit (40) arranged in the take-up position can be driven by the second drive unit, b.iv) the electronic detector arrangement (32), wherein the cassette take-up arrangement is configured to use the electronic detector arrangement (32) for the cassette unit (40) arranged in the take-up position to detect the radius of the feed roller (22) wound around with the second separating material (28) and / or of the take-up roller (24) wound around with the second separating material (28) with a detection method.The method of claim 7, wherein the cartridge receiving assembly comprises one or more positioning elements, the positioning elements being configured to stabilize a cartridge unit (40) in the cartridge receiving assembly in a predetermined position.Method according to any one of claims 1 to 8, additionally comprising as part of the receiving arrangement (20): vii) a third drive unit for driving the feed roller (22).Method according to one of Claims 1 to 9, wherein the receiving arrangement (20) comprises one or more pressing elements (42) in the region of the receiving region (30), wherein the adhesive elements (10) dispensed by the dispenser arrangement (14) are pressed onto the second separating material (28) in the receiving region (30) by means of the one or more pressing elements (42) when arranged on the second separating material (28).Method according to one of Claims 1 to 10, wherein the receiving arrangement (20) is configured to detect, by means of the electronic detector arrangement (32), the radius of the feed roller (22) wound around with the second separating material (28) and / or of the receiving roller (24) wound around with the second separating material (28) using an optical detection method.The method according to any one of claims 1 to 11, wherein the electronic detector arrangement (32) comprises one or more detector units (44a, 44b).The method of claim 12, wherein the one or more detector units (44a, 44b) are selected from the group consisting of cameras and distance detectors.Method according to one of claims 1 to 13, wherein the second drive unit is controlled and / or regulated as a function of the detected radius of the feed roller (22) wound with the second separating material (28) and / or as a function of the detected radius of the take-up roller (24) wound with the second separating material (28), in order to maintain a predetermined take-up speed v A.A feeding device for use in a method according to any one of claims 1 to 14, comprising: A) a dispenser arrangement (14) comprising: A.i) a first roller receptacle for rotatably mounted receiving a mother roller (48) comprising a donor material strip (12), wherein the donor material strip (12) comprises a plurality of adhesive elements (10) arranged on a web-shaped first separating material (16), A.ii) a pull-off unit (34) for pulling off the donor material strip (12) from the mother roller (48) comprising the first drive unit, A.iii) a guide system (46) configured to guide the unwound donor material strip (12) from the mother roller (48) through the dispensing region (18), and B) a cassette receiving arrangement, comprising: B.i) a receiving position for reversibly and non-destructively interchangeably receiving a cassette unit (40), which comprises: - the feed roller (22), - the receiving roller (24), - the guide arrangement (26), and - the web-shaped second separating material (28), which is partially wound onto the feed roller (22) and is fastened at one end to the receiving roller (24), wherein the second separating material (28) is arranged between the feed roller (22) and the receiving roller (24) in the guide arrangement (26) and is guided through a cassette receiving region of the cassette unit (40), B.ii) the second drive unit, wherein the cassette receiving arrangement is configured such that the receiving roller (24) of a cassette unit (40) arranged in the receiving position can be driven with the second drive unit, and B.iii) the electronic detector arrangement (32), wherein the cassette receiving arrangement is configured to detect, by means of the electronic detector arrangement (32) for a cassette unit (40) arranged in the receiving position, the radius of a feed roller (22) wound with second separating material (28) and / or of a take-up roller (24) wound with second separating material (28) by means of a detection method, wherein the feeding device is configured to control and / or regulate the second drive unit as a function of the detected radius of the feed roller (22) wound with the second separating material (28) and / or as a function of the detected radius of the take-up roller (24) wound with the second separating material (28) of a cassette unit arranged in the receiving position.

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