DE102014108461A1 - Method and device for joining film webs - Google Patents

Abstract

The invention relates to a method for connecting a first film web (1) to a second film web (2), the film webs (1, 2) each having a carrier layer (12, 22) and a transfer layer (11, 21), with the steps a) arranging the film webs (1, 2), so that the carrier layer (12) of the first film web (11) in one end region (13) of the first film web (1) flat on the carrier layer (22) of the second film web (2). in an end region (23) of the second film web (2) is present; b) bonding the film webs (1, 2) in the overlapping end regions (13, 23) by ultrasonic separation welding to produce a weld seam (4); c) attaching a seam reinforcement (6) covering the separating weld seam (4) on one or both sides at least in regions. The invention further relates to a device (3) for carrying out such a method as well as a film web thus obtained from at least two partial film webs (1, 2).

Description

The invention relates to a method and a device for connecting a first and second film web, which each have a transfer layer and a carrier layer, and a film web, which is made by means of such a method of two partial film webs. The invention further relates to a film web, which is joined in this way from at least two partial film webs.

In the processing and application of transfer films and laminating often multiple film webs are connected to each other, so you get a correspondingly longer overall length ("run length"). The film web is then preferably rolled up on a roll without interruptions in the desired run length.

The longer the film web achieved in this way, the greater the degree of productivity that can be achieved in its use. Also set-up or downtime, which are accompanied by a roll change, reduced. One known method for bonding film webs is the so-called "splicing", in which commercial self-adhesive tapes are manually applied to glue two film webs together. The bonding takes place in the case of laminating or transfer films (films coated on one side with a transfer layer which is removable), typically on the uncoated side of the film.

The splicing with adhesive tape is inexpensive, can follow each other with a relatively high registration accuracy of the film webs, and the splice (the joint or seam) has high strengths, in particular tensile strength in the direction of the film web. The tensile strength in the direction of travel of the film web is crucial since, during the processing of film webs, e.g. in printing presses, laminating machines, laminating machines, hot embossing machines, in particular during rapid transport of the film web or even during machine start-up processes, considerable forces occur in the direction of travel.

A disadvantage of splicing is further that because of the conventional adhesive tape used belonging to this cold adhesive at higher pressure, such as within a particularly tightly wound spliced film roll can be pushed out by the pressure of adjacent film webs, so that adjacent turns of the roll with each other glued and the role is no longer unwound. The so distributed within the roll cold adhesive also contaminates a variety of points of the film web, which may not be usable thereby. Another disadvantage is that the previously used relatively thick adhesive tapes to unwanted marks and impressions in the film rolls, in particular through several layers of film, so that in addition material of the film web can be unusable in the vicinity of the splices for further processing , A further disadvantage is that extruded cold adhesive can also be transferred to the substrate during embossing operations and can lead to unwanted web breaks if the embossing film adheres to the substrate which is to be embossed.

The object of the present invention is to provide an improved method and an improved device by which the mentioned disadvantages are reduced or avoided.

According to the invention this object is achieved with the subject matter of claim 1, the subject of claim 20 and the subject of claim 25.

• a) Anordnen der Folienbahnen, so dass die Trägerlage der ersten Folienbahn in einem Endbereich der ersten Folienbahn flächig an der Trägerlage der zweiten Folienbahn in einem Endbereich der zweiten Folienbahn anliegt;
• b) Verbinden der Folienbahnen in den überlappenden Endbereichen durch Ultraschalltrennschweißen unter Erzeugung einer Schweißnaht;
• c) Anbringen einer die Trennschweißnaht ein- oder beidseitig zumindest bereichsweise überdeckenden Nahtverstärkung.

Such a method for connecting a first film web to a second film web, wherein the film webs each have a transfer layer and a carrier layer, comprises the steps:

• a) arranging the film webs so that the carrier layer of the first film web abuts in an end region of the first film web flat against the carrier layer of the second film web in an end region of the second film web;
• b) bonding the film webs in the overlapping end regions by ultrasonic separation welding to form a weld;
• c) attaching the separating weld on one or both sides at least partially overlapping seam reinforcement.

For carrying out such a method, an apparatus is suitable for joining a first film web, comprising a transfer layer and a carrier layer, with a second film web, comprising a transfer layer and a carrier layer, the device having an ultrasonic separation welding station and, advantageously, downstream in a conveying direction of the film webs Ultrasonic separation welding station arranged joining station has.

An overlapping of the separating weld by the seam reinforcement should be understood to mean that the seam reinforcement, viewed from the direction of the surface normal to the film webs, at least partially overlaps the separating weld seam. If the film webs connected by the separating weld seam are viewed in the plane in a plane spread state, the seam reinforcement can be located on the sides of the carrier layers of the film webs and / or on the sides of the transfer layers of the film webs. The seam reinforcement does not have to be directly on the Disconnect weld or the film webs rest. It is also possible for further intermediate layers, such as an adhesive layer and / or further auxiliary layers, to be arranged between the seam reinforcement and the separating weld seam and / or the film webs.

The positionally accurate arrangement of the two film webs relative to each other in advance to create the ultrasonic separation weld to apply the carrier layer of the first film web in an end region of the first film web surface to the carrier layer of the second film web in an end region of the second film web, in this context with the aid of registration marks and the like, as well as corresponding sensors, so as to maintain rapport distances between the images of the film after the production of the ultrasonic separation weld, thereby maintaining a stable process in the processor of the film.

The ultrasonic separation welding process thus results in a film web comprising at least a first part film web and a second part film web each having a carrier layer and a transfer layer, wherein the first and second part film webs are connected in respective end regions by ultrasonic separation welding and attaching a seam reinforcement over a weld produced by the ultrasonic separation welding ,

In ultrasonic separation welding, the material of the carrier layers is first softened and brought into a flowable state. During complete penetration welding and separating the film webs, therefore, the material of the carrier layers of the first and second film web so that the carrier layers are continuously connected and in the first step results in a seam with initially still reduced seam strength.

Depending on the type of seam reinforcement used, which is applied in the second step, can be dispensed with an adhesion of the splice. Even if the seam reinforcement is glued, it is ensured by the continuous connection of the carrier layers that no adhesive can escape to the transfer layer side of the resulting bonded film web.

As a result, contamination of the film web are avoided, prevents sticking successive layers of the web in the rolled state and / or avoided a transfer of the cold adhesive to the embossing substrate. This reduces the rejects and the risk of web breaks during the further processing of the film web.

Overall, the combination of a separating weld seam and a seam reinforcement results in a very stable connection of the film webs, which enables process-reliable and damage-free further processing and guarantees better durability than comparable film webs joined in the conventional butt joint.

For ultrasonic separation welding, a rotating sonotrode in combination with a rotating counter-holder, in particular a separating welding wheel, is preferably used on the one side.

The sonotrode and the counter-holder, in particular the Trennschweißrad can roll over the film webs to be welded, so that in the feed direction of the sonotrode no unnecessary forces are introduced into the film webs, which could lead to wrinkles or cracks of the film webs. As a result, particularly high welding speeds can be achieved.

Preferably, the feed rate of the sonotrode and the counter-holder is from 0.1 m / min to 50 m / min, more preferably from 0.5 m / min to 1 m / min. A contact force between the sonotrode and the counter-holder on the film webs is preferably from 1 N to 600 N, more preferably from 10 N to 60 N.

It is advantageous if a counter-holder is used, which has a cutting edge or cutting edge with a predetermined angle.

This ensures the clean separation of the welded end portions of the film webs and facilitates the continuous connection of the carrier layers.

Preferably, the sonotrode is operated at a frequency of 20 kHz to 90 kHz, preferably from 50 kHz to 60 kHz.

In this context, it is also possible that a rotating sonotrode in conjunction with a fixed on the opposite side Trennschweißeinheit (Trennschweißleiste), which extends over the entire width of the material to be processed and possibly constructed of individual segments, is used to create a separation weld ,

Between the fixed splitter bar and the rotating sonotrode are correspondingly the two carrier side adjacent and joined together foil web ends. During the separation welding process, the rotating sonotrode moves with the appropriate force, frequency and speed over the Trennschweißleiste, whereby the seam and thus the connection of both film webs is provided.

Preferably, the seam reinforcement is applied by ultrasonic welding. In this embodiment, the use of adhesives is completely avoided, so that there is no risk of contamination of the film webs or sticking of the rolled-up film webs.

It is advantageous if a band is used as seam reinforcement, which consists of the same material as the carrier layer / n. As a result, the same material properties and thus increased stability for the resulting film web are consistently ensured, so that the further processing can be carried out particularly reliable process.

In this context, it may be advantageous if two seam reinforcements - one on the transfer layer side of the film web, hereinafter referred to as "top", as well as one on the carrier side of the film web, hereinafter referred to as "bottom" - introduced into the seam area become.

Advantageously, the implementation of the additional lower seam reinforcement ensures that, for example, an insulation effect is built up in the ultrasonic welding process, which avoids that the vibration energy introduced via the sonotrode flows off quickly and thus the stability of the ultrasonic welding seam is adversely affected.

On the other hand, the implementation of the lower seam reinforcement, which can have its own carrier layer and a detachable own, in particular colored or otherwise provided with information transfer layer, ensures that the missing areas (seam areas) in the embossed material are clearly visible even with very narrow seams , as it comes in the seam area for transferring the transfer layers and thus ensures that faulty embossing can be easily sorted out.

Furthermore, it is possible to introduce information about the seam reinforcement material into the seam, which may be, for example, color information (if it is a dyed seam reinforcement material), lettering; code; Barcodes etc .; (if it is a seam reinforcement material preferably labeled with an inkjet printer), optical information (if it is a seam reinforcement material, for example with microstructures), magnetic information (if it is a magnetized or magnetizable seam reinforcement material), functional information ( if it is a seam reinforcement material with functional layers, in particular electronic components or electrically conductive and / or electrically semiconductive layers), etc.

In this context, it is also possible to combine different types of information in order to increase the degree of information within the provided seam, depending on the requirements. Likewise, it may be advantageous that information does not extend over the entire seam area, but is provided only in partial regions of the seam.

Advantageously, this could - in the case of colored seams with a company logo or the like - product trademarks are produced in manufactured roll goods and thereby ensure that the roll material is provided only by a specific manufacturer. The upper layer material can be made transparent or non-transparent, which could result in further seam properties.

Advantageously, an assignment of roll goods to the production sites could also be given via the color selection of the seams - again, it may be the use of a transparent, partially transparent or even non-transparent seam upper layer material.

Advantageously, the information described below can be provided in the seams, for example via an inkjet printer integrated in the seam-making process.

The number of running meters of subsequent roll material containing no seam may be included as information in the seam. This would be particularly useful if the seams are made in the product directly on a Umrollschneidemaschine to maintain the correct winding direction. This information can result in process optimizations that would be associated with a process cost reduction.

A continuous seam numbering could be included as information in each seam - this would be particularly advantageous if the seams are provided directly to a roll-over cutter. This can also result in process simplifications.

In addition, the provision of this information is security-relevant, since no further seams can be introduced into the roll without deviations between the actual number of seams and the introduced inkjet information in the seams would result.

In addition to general product descriptions as information in the seams, width position information can also be present as information in the seams, which were advantageously labeled via an inkjet printer, as information in the seams

Considering the general safety aspect using the example of film webs for security documents, such as ID documents or banknotes, it would theoretically be possible to remove material from jumbos with commercially available adhesive tape, since the adhesive seams can easily be adjusted.

On the other hand, if provision is made for the seam in such a way that security features (for example erased diffractive structures in the ultrasonically welded regions or even inkjet information) are present in the seam, this can make manipulation more difficult.

In this regard, the motif (e.g., diffractive structures) of the topsheet material may be matched, i. In a precise manner applied thereto Ultraschallnahtverbindungsstrukturen increase the security against counterfeiting.

It is also advantageous in the case of the abovementioned embodiments if, on the one side for ultrasonic welding, a further rotating sonotrode and a rotating anvil wheel, which can not be structured or partially structured or structured over the entire surface, are used. This results in the same advantages that have already been explained by ultrasonic separation welding.

According to the described separation welding process, it is of course also possible that at the location of the rotating structured, partially structured or fully structured anvil wheel a structured or partially structured or fully structured fixed counter-plate, which can also be constructed from individual segments, is used as a counterpart to the rotating sonotrode and about which rolls off the rotating sonotrode with the corresponding pressure force, frequency and speed and between which lies the material and band to be welded.

Expediently, in both cases, the further sonotrode with a frequency of 20 kHz to 90 kHz, preferably from 50 kHz to 60 kHz operated.

For ultrasonic welding on the other side, it is preferable to use a stationary sonotrode, which is moved over the material stack during the ultrasound process, in combination with a counter-holder.

Preferably, the sonotrode is operated with the parameters already described, in particular with the already described pressing force, frequency and feed rate.

Advantageously, the rigid sonotrode has at least two support areas, which preferably have a distance of 0.1 mm to 20 mm, particularly preferably a distance of 1 mm to 3 mm.

In a further preferred embodiment, the seam reinforcement is attached by gluing.

Due to the initially applied ultrasonic separating weld, an escape of adhesive / s onto the side of the carrier layer / s is avoided, so that sticking of the film web during rolling up or during the processing process can be ruled out.

It is expedient if an adhesive tape, in particular with a carrier layer and an adhesive layer, is used as the seam reinforcement on one side. The carrier layer and / or the adhesive layer can also be designed as a multilayer.

Conveniently, the adhesive layer is sometimes composed of gum-resin adhesives (cross-linked, cross-linked, non-cross-linked, synthetic, non-synthetic), acrylate adhesives, pure acrylate adhesives, acrylate dispersions, modified acrylates, solvent acrylates, acid-free acrylates, optically clear acrylics, thermosetting adhesives , thermoconductive adhesives, electroconductive adhesives, phenolic resin modified adhesives, repositionable adhesives, elastomeric adhesives, silicone adhesives, synthetic rubber adhesives, natural rubber adhesives, special adhesive constructions, hotmelt adhesives (PA, PET, PU and the like) or UV-curing adhesives or combinations thereof, in particular with a layer thickness of 1 .mu.m to 400 .mu.m, preferably from 20 .mu.m to 50 .mu.m.

It is also expedient if the carrier layer of the adhesive tape-which can / can be finished with the adhesive (s) -is made of films or films (PET, PE, PP (OPP, BOPP, CPP), PC, PVC (hard and / or soft); hydrate-cellulose; PS; PUR; polyurethane elastomer; PU microfibers; polyamide; polyimide; UHMW-PP; bio-based plastics (such as PLA); combinations of plastics; Tedlar ^®; Kapton ^®; Teflon ^®) is and / or webs and / or foams (for example, PE, PUR; vinyl; EPDM; neoprene ^®; cellular rubber) and / or (from papers smooth, creped; teilgekrepptes; flachgekrepptes; color; impregnated; frozen capable; high temperature) and / or from tissues (eg, cotton, rayon; PI, PA; coated (eg, Teflon ^®) glass fabric, uncoated glass fabrics, Nylon ^®; Polysiloxangewebe; PTFE glass fabric, impregnated or non-impregnated fabric; Acetatseidengewebe or the like), and / or from a multilayer system and / or combinations of the above systems and / or systems with metal inserts, in particular with a layer thickness of 4 μm to 2000 μm, preferably from 12 μm to 150 μm.

In this context, there is also the possibility that the provision of the adhesive tape via the provision of a carrier material in conjunction with the immediate provision of a liquid adhesive in the preparation of the seam reinforcement takes place, which is followed by the curing of the applied adhesive and thus a stable seam reinforcement available is provided.

The curing can be carried out in various ways and, for example, be initiated by thermal or UV radiation.

In a further alternative embodiment, the seam reinforcement is applied by hot stamping.

It is advantageous if a hot embossing belt, in particular with a carrier layer and a heat-activatable adhesive layer, is used as the seam reinforcement. The adhesive layer can also be configured as a multilayer.

The heat-activatable adhesive layer of the hot stamping tape is expediently composed of binders such as chlorinated polyolefins, chlorinated long-chain hydrocarbons, polyacrylates, polyolefins and / or modified maleate resins and / or polyamides, polyester binders, co-polymers, vinyl acetates, alkyd binders, balsam resins, rosin esters, phenolic resins, Bremasinen, Glyzerinharzestern , Cellulose esters, cellolyids, synthetic binders, phthalate esters and the like, or combinations thereof, in particular with a layer thickness of from 0.5 μm to 100 μm, preferably from 0.5 μm to 10 μm.

Furthermore, it is expedient if the carrier layer of the hot embossing belt - which can be equipped with at least one heat-activatable adhesive layer - consists of films or films (PET, PE, PP (OPP, BOPP, CPP), PC, PVC (hard and / or soft). Hydrate cellulose; PS; polyamide; polyimide; UHMW-PP; bio-based plastics (eg PLA); combinations of plastics, etc.) and / or nonwoven, of paper (smooth, creped, partially creped, flat creped; high temperature), woven fabric (eg cotton, viscose rayon, PI; PA; coated (eg ^Teflon® ) glass fabric; uncoated glass fabric; ^nylon® ; polysiloxane fabric; PTFE glass fabric, impregnated or non-impregnated fabric; acetate silk fabric or the like); from a multilayer system and / or from combinations of the above systems and / or systems with metal inserts, in particular with a layer thickness of 4 μm to 1000 μm, preferably from 12 μm to 100 μm.

The seam reinforcement expediently has a width of 1 mm to 100 mm, preferably of 2 mm to 40 mm, and / or of 100% to 100000% of a width of the ultrasonic separation weld, preferably from 400% to 10000% of the width of the weld.

As a result, a good coverage of the weld and thus a sufficient mechanical stabilization of the splice is achieved, so that mechanical damage can be avoided in the further processing of the resulting film web.

Preferably, the first and / or second film web is fixed during the ultrasonic separation welding and / or the attachment of the seam reinforcement by holding means, in particular mechanical clamping means.

As a result, a drape or a displacement of the film webs during the ultrasonic separation welding and / or the attachment of the seam reinforcement can be avoided, so that high-quality splices are obtained.

In order to ensure particularly simple processing of the film webs, it is advantageous if the first and / or second film web are guided by means of respective conveying means in a web conveying plane, wherein the joining station in the web conveying plane and the ultrasonic separating welding station is arranged below the web conveying plane.

The first film web is thereby conveyed until its end region comes to rest in the region of the ultrasound separation welding station and can turn out of the conveying plane via the respective conveying means, for example a roll, so that the end region protrudes into the ultrasonic separating welding station. Now, the second film web can be arranged with its end region correspondingly in the ultrasonic separation welding station, so that the ultrasonic separation welding step described above can be carried out.

The promotion of the two film webs can of course also on the use of registration marks and the like in conjunction with corresponding sensors done so that certain Rapport distances between possible images on the film webs are maintained.

After ultrasonic separation welding, the webs joined in this way can then be transported further by means of the conveying means, so that the weld produced can enter the joining station and be provided there with the seam reinforcement.

In particular, while the ultrasonic separation welding station and the joining station are rotated by 90 ° from each other, i. the end portions of the film webs deflect perpendicularly downwardly from the web conveying plane during ultrasonic severing welding and are thus welded while the seam reinforcement is applied to a portion of the film webs lying flat in the web conveying plane.

The incorporation of the ultrasonic separation weld into the suture reinforcement unit may also be accomplished in this connection via marks and the like in conjunction with corresponding sensors, thereby providing a clean center position of the ultrasonic separation weld in the second unit as well as constant process conditions.

The invention will now be explained in more detail with reference to exemplary embodiments. Show it

1 An embodiment of an apparatus for joining two film webs during the attachment of an ultrasonic separation weld in a first step of an embodiment of a method for joining two film webs;

2 An embodiment of an apparatus for connecting two film webs during the removal of the separated by ultrasonic separation welding end portions of the film webs in a second step of an embodiment of a method for connecting two film webs;

3 An embodiment of an apparatus for connecting two film webs during the conveying of the weld region of the film webs to a joining station in a third step of an embodiment of a method for joining two film webs;

4 An embodiment of an apparatus for joining two film webs during the application of a seam reinforcement in the weld area in a fourth step of an embodiment of a method for connecting two film webs;

5 An embodiment of an apparatus for joining two film webs during the joining of the seam reinforcement in the weld area by ultrasonic welding with the use of a rotating sonotrode in a fifth step of an embodiment of a method for joining two film webs;

6 An embodiment of a device for joining two film webs during the attachment of an additional uncoated seam reinforcement;

7 An embodiment of an apparatus for connecting two film webs during the joining of two seam reinforcements;

8th An embodiment of an apparatus for joining two film webs during the application of an additional coated seam reinforcement;

9 An embodiment of an apparatus for joining two film webs during the joining of an additional coated seam reinforcement;

10 An embodiment of an apparatus for joining two film webs during the application of an overhead seam reinforcement;

11 An embodiment of an apparatus for joining two film webs during the joining of an overhead seam reinforcement using a rigid sonotrode;

12 An embodiment of an apparatus for joining two film webs during the application of a top and uncoated underlying seam reinforcement;

13 An embodiment of an apparatus for joining two film webs during the joining of a top and a bottom uncoated seam reinforcement using a rigid sonotrode;

14 An embodiment of a device for connecting two film webs during the application of a top and bottom, coated seam reinforcement;

15 An embodiment of an apparatus for joining two film webs during the joining of a top and bottom, coated seam reinforcement using a rigid sonotrode;

16 An embodiment of a device for connecting two film webs during the application of an overhead seam reinforcement with color information;

17 An embodiment of an apparatus for joining two film webs during the joining of an overhead seam reinforcement with color information using a rotating sonotrode;

18 The embodiment according to 17 in sectional view;

19 An embodiment of a device for connecting two film webs during the application of an overhead seam reinforcement with inkjet printer information;

20 An embodiment of an apparatus for joining two film webs during the joining of an overhead seam reinforcement with inkjet printer information using a rotating sonotrode;

21 The embodiment according to 20 in sectional view;

22 An embodiment of an apparatus for joining two film webs during the application of an overhead seam reinforcement with structural information;

23 An embodiment of an apparatus for joining two film webs during the joining of an overhead seam reinforcement with structural information using a rotating sonotrode;

24 The embodiment according to 23 in sectional view;

25 An embodiment of an apparatus for connecting two film webs during conveying the weld region of the film webs to a joining station in a third step of an alternative embodiment of a method for joining two film webs;

26 An embodiment of an apparatus for joining two film webs during the application of a seam reinforcement by gluing in the weld area with the use of an adhesive tape in a fourth step of an alternative embodiment of a method for joining two film webs;

27 An embodiment of an apparatus for connecting two film webs during the conveying of the weld region of the film webs to a joining station;

28 An embodiment of an apparatus for connecting two film webs during the establishment of a counter-plate for gluing in the weld area;

29 An embodiment of an apparatus for connecting two film webs during the application of the liquid adhesive for bonding in the weld area;

30 An embodiment of an apparatus for connecting two film webs during the application of a carrier tape for bonding in the weld region;

31 An embodiment of an apparatus for connecting two film webs during the curing of the applied liquid adhesive for bonding in the weld area;

32 An embodiment of an apparatus for connecting two film webs during the conveying of the weld region of the film webs to a joining station;

33 An embodiment of an apparatus for joining two film webs during the application of a seam reinforcement by hot stamping.

For connecting a first film web 1 with a second film web 2 serves as a whole with 3 designated device, such as 1 shows. The film webs each have a transfer position 11 . 21 and a carrier layer 12 . 22 on. It may therefore be hot stamping foils, laminating films or the like.

The device 3 includes an ultrasonic separation welding station 31 and a joining station 32 , By means of transport rollers 33 become the film webs 1 . 2 arranged so that their end areas 13 . 23 in the area below the one by the transport rollers 33 defined conveying plane of the film webs 1 . 2 arranged ultrasonic separation welding station 31 to come to rest. The end areas overlap 13 . 23 , wherein the carrier layers 12 . 22 abut each other and the transfer layers 11 . 21 in the area of the ultrasonic separation welding station 31 thus forming the outer surfaces of the resulting film stack.

By means of pneumatic or hydraulic or electrically movable or manually movable cylinder 311 are now clamping punch 312 to the end areas 13 . 23 the film webs 1 . 2 Pressed so that the film webs 1 . 2 be fixed in the ultrasonic separation welding station. From the side of the transfer situations 11 . 21 become a rotating sonotrode 313 and a rotating cutting wheel 314 , which has a cutting edge, to the film webs 1 . 2 pressed and advanced over the width of the film webs.

The by means of the sonotrode 313 introduced vibration energy leads to internal friction in the film webs 1 . 2 , so that softens their material and by the existing pressure in Trennschweißbereich the Trennschweißrades 314 is disconnected. In this case, the carrier layers connect 12 . 22 the film webs 1 . 2 continuously.

Preference is given to the sonotrode 313 with an oscillation frequency of 20 kHz to 90 kHz, particularly preferably from 50 kHz to 60 kHz, a peripheral speed or feed rate of 0.1 m / min to 50 m / min, particularly preferably from 0.5 m / min to 1 m / min, and a contact pressure of 1 N to 600 N, more preferably from 10 N to 60 N operated. The width of the sonotrode 313 is preferably from 2 mm to 40 mm, more preferably from 5 mm to 10 mm, so that there is a corresponding width of the weld 4 results.

After that, a separation weld 4 over the entire width of the film webs 1 . 2 can be generated, as in 2 shown the clamps 312 be solved again and the separated end portions 13 . 23 the film webs 1 . 2 be removed.

The welded (pre-welded) film webs are now, as in 3 represented by means of the transport rollers 33 in the direction of the arrow 5 promoted until the weld 4 in the region of the joining station arranged in the conveying plane 32 to come to rest.

As in 4 is now an overhead, ie arranged on the side of the transfer layers seam reinforcement 6 on the weld 4 hung up. This is preferably a film which consists of the same material as the carrier layers 12 . 22 the film webs 1 . 2 , For example, this may be PET or PE; PP (OPP; BOPP; CPP); PC; PVC and the like act. The layer thickness of the seam reinforcement 6 is preferably from 4 microns to 300 microns, more preferably from 12 microns to 23 microns, and their width of 1 mm to 40 mm, more preferably from 2 mm to 10 mm, so that a good overlap of the separating weld 4 results.

In the in the 3 to 5 shown embodiment of the device 3 is it at the joining station 32 around an ultrasonic welding station. For firmly connecting the seam reinforcement 6 with the film webs 1 . 2 in the area of the weld 4 are also here first by means of pneumatic or hydraulic or electrically movable or manually movable cylinder 321 terminal temple 322 to the film webs 1 . 2 pressed so that these in the area of the joining station 32 be fixed in order to avoid a drape or slipping during the process.

From the opposite sides of the film webs 1 . 2 turn now turn a rotating sonotrode 323 and a rotating anvil wheel 324 (not structured or semi-structured or fully structured), to the film webs 1 . 2 Pressed and advanced over the width of the film webs, as in 5 shown. The anvil wheel 324 However, here has no cutting edge, so that the film webs 1 . 2 not be separated, but only a connection with the seam reinforcement 6 and enter the illustrated area of the film webs.

The by means of the sonotrode 323 introduced vibration energy also leads to internal friction in the film webs 1 . 2 and the suture reinforcement 6 so that their materials soften and by the back pressure of the anvil wheel 324 firmly connected.

Preference is given to the sonotrode 323 operated with the parameters already described by the separation welding. The width of the sonotrode 323 is preferably from 1 mm to 40 mm, more preferably from 5 mm to 10 mm.

Overall, a particularly stable splice between the film webs 1 . 2 which is free from contamination and minimizes the risk of web breaks in the further processing of the resulting film web.

6 and 7 show an alternative embodiment for providing the seam reinforcement. The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

In addition to the introduction of an overhead, ie arranged on the side of the transfer layers seam reinforcement 6 Now additionally takes place the introduction of a bottom, ie arranged on the side of the carrier foils seam reinforcement 7 , This is in the same way uncoated and advantageously constructed of the same material as the upper seam reinforcement and thus preferably of the same material as the carrier layers 12 . 22 the film webs 1 . 2 ,

To mention in this case is that the widths, as well as the thicknesses of the upper 6 and lower suture reinforcement 7 quite different and thus may differ from each other.

Advantageously, by implementing the further lower seam reinforcement 7 achieved that, for example, an insulating effect is built in the ultrasonic welding process, which It is avoided that the vibration energy introduced via the sonotrode flows off quickly and thus the stability of the ultrasonic welding seam is negatively influenced.

It should be mentioned here that the bond forces between the overhead seam reinforcement 6 and the carrier layers 12 ; 22 may be quite different, to the bond forces that exist between the lower suture reinforcement 7 and the transfer situations 11 . 21 being constructed. This applies in principle to all embodiments with two seam reinforcements.

Again, the already described parameters for operating the sonotrode are again preferably used.

8th and 9 show an alternative embodiment for providing the seam reinforcement 6 . 7 , The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

In addition to the introduction of an overhead seam reinforcement 6 the insertion of an underlying seam reinforcement also takes place 7 , This is made of a coated carrier layer 72 which are advantageously constructed of the same material as the upper seam reinforcement 6 and thus preferably of the same material as the carrier layers 12 . 22 the film webs 1 . 2 , built up.

The coating can in particular as one of the carrier layer 72 removable transfer layer 71 be educated. This transfer situation can be 71 the suture reinforcement 7 in the application of the film webs are transferred to a substrate together with the transfer layers of the film webs on the substrate.

The seam reinforcements may preferably also consist of the materials already described with the described layer thicknesses and widths.

It is important in this context that the coating of the lower seam reinforcement 7 is arranged in the same direction in the construction of the seam, as the direction of the transfer layers 11 ; 21 the film webs 1 . 2 ,

When coating 71 the lower seam reinforcement 7 it is advantageous to a similar layer structure, as the layer structure of the transfer layers 11 . 21 but with small differences.

First, it would be advantageous if the layer structure of the lower seam reinforcement 7 in color from the transfer layers 11 . 21 differs and the embossing process - due to the thicker layer structure present in the seam area (carrier layer of the film 1 . 2 and transfer layer of the film 1 . 2 and upper seam reinforcement and lower seam reinforcement) along with the resulting lower temperature gradient - easier to detach.

Again, by implementing the additional lower seam reinforcement (coated), the insulation effect already described in the ultrasonic welding process can be achieved.

On the other hand, by implementing the lower seam reinforcement 7 , which is coated, ensures that the customer can clearly identify the missing areas (seam areas) in the embossed material, even with very narrow seams, because the transfer of transfer layers also takes place in the seam area, thus ensuring that faulty embossing can be sorted out easily.

The process times can thus be reduced and costs reduced.

Advantageously, the welding parameters already described are also used here.

10 and 11 show an alternative embodiment for providing the seam reinforcement 6 . 7 using a rigid sonotrode 325 , The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

From the opposite sides of the film webs 1 . 2 now become a rigid sonotrode 325 and a counter plate 326 to the film webs 1 . 2 and the upper seam reinforcement 6 pressed. The counter plate 326 protrudes over the entire area over which the seam is to be created and the rigid sonotrode 325 is about the width of the film webs 1 . 2 advanced, as in 11 shown.

This will ensure that a connection between the film webs 1 . 2 and the suture reinforcement is built up.

The by means of the rigid sonotrode 325 introduced vibration energy also leads to internal friction in the film webs 1 . 2 and the seam reinforcement, so that soften their materials and by the back pressure of the back plate 326 firmly connected.

The welding parameters and the materials and dimensions of the seam reinforcement preferably also correspond here to the embodiments already described.

Advantageously, the rigid sonotrode has 325 over at least two bearing areas, which preferably have a distance of 0.1 mm to 20 mm, particularly preferably a distance of 1 mm to 3 mm.

12 and 13 show an alternative embodiment for providing an upper 6 and lower suture reinforcement 7 using a rigid sonotrode. The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained. Other differences to those in the 6 and 7 shown embodiment do not exist.

14 and 15 show an alternative embodiment for providing an upper 6 and a lower seam reinforcement 7 using a rigid sonotrode 325 wherein the lower seam reinforcement is a carrier layer 72 and a transfer location 71 having. The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained. This embodiment differs from that in the 8th and 9 shown only by the use of a rigid sonotrode.

It is important in this context that the coating of the lower seam reinforcement 7 is arranged in the same direction in the construction of the seam, as the direction of the transfer layers 11 ; 21 the film webs 1 . 2 ,

The coating of the lower seam reinforcement is advantageously a similar layer structure as the layer structure of the transfer layers 11 . 21 but with small differences.

On the one hand, it may be advantageous if the layer structure of the lower seam reinforcement 7 in color from the transfer layers 11 . 21 differs and the embossing process - due to the thicker layer structure present in the seam area (carrier layer of the film 1 . 2 , Transfer position of the film 1 . 2 , upper seam reinforcement and lower seam reinforcement) along with the resulting lower temperature gradient - easier to detach.

On the other hand, by implementing the lower seam reinforcement 7 , which is coated, ensures that in the further processing, the missing areas (seam areas) in the embossed material are clearly visible even with very narrow seams, as it comes in the seam area for the transfer of transfer layers and thus ensures that faulty embossing can be easily sorted out.

The processing times during further processing can thus be reduced and costs reduced.

Advantageously, here also has the rigid sonotrode 325 over at least two bearing areas, which preferably have a distance of 0.1 mm to 20 mm, particularly preferably a distance of 1 mm to 3 mm.

16 to 18 show an alternative embodiment for providing the seam reinforcement 6 using a rotating sonotrode and an anvil wheel.

16 and 17 represent - in a spatial representation - the conditions in the application of the upper seam reinforcement 6 The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

About a roll-out 328 on the carriage of the anvil wheel 327 is fixed, the seam reinforcement material via a corresponding baffle 329 introduced directly into the ultrasonic welding area, creating a very clean and positionally accurate seam reinforcement 6 is applied. Depending on the guide plate design, it is thus possible to process very thin seam reinforcements.

Advantageously, in this embodiment, the seam reinforcement material is colored in such a way that it is colored and uncoated carrier material. This ensures that stable seams can be provided because the material properties to the substrate 12 . 22 are approximately identical.

The coloring can be provided in this context in the way that color transparent; partially transparent or non-transparent seam areas are generated, whereby in the first case information of the simplest kind, in this case color information, is introduced into the seam.

This procedure can result in a variety of advantages in the further processing of the rolls created with seams.

In 17 the generated seam area is shown. You can see the two slides 1 . 2 with the corresponding carrier layers 12 . 22 as well as the transfer situations 11 . 21 , which have a colored seam reinforcement 6 are connected in the side areas due to the structured rotating sonotrode.

Corresponding 10 If it were also possible to use a rigid sonotrode, in this case it would not be possible to produce an ultrasound weld pattern, as is shown in US Pat 17 is shown.

19 to 21 show an alternative embodiment for providing the seam reinforcement 6 using a rotating sonotrode 323 and an anvil wheel 327 ,

19 and 20 represent here - in spatial representation - the conditions in the application of the upper seam reinforcement by means of rotating sonotrode., The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

About a roll-out 328 on the carriage of the anvil wheel 327 is fixed, the suture reinforcing material 6 first via an inkjet printer 8th and then over a corresponding baffle 329 introduced directly into the ultrasonic welding, whereby a very clean and positionally accurate seam reinforcement - for example, with barcode information - can be applied.

The information provided by the inkjet printer 8th "Just in time" can be implemented, for example, lettering, numbers; Barcodes or the like and can of course also differ in the different seams of a roll as well as deviating over the width of the seam.

So it would be possible in this context, bring the running number of subsequent roll material, which contains no seam, as information with in the seam. This is only useful if the seams in the product are made directly on a Umrollschneidemaschine to maintain the correct winding direction. This information can result in process optimization.

Likewise, a continuous seam numbering could be incorporated as information in each seam - again, this approach would only make sense if the seams are provided directly to a Umrollschneidemaschine.

This can also result in process simplification for the customer. In addition, the provision of this information would be a safety issue, since no further seams can be introduced into the roll without deviations between the actual number of seams and the introduced inkjet information in the seams would result.

On the other hand, it would also be possible to have general product descriptions as information in the seams via an inkjet printer 8th to contribute, which could then be read at seam positions.

Because the direct labeling of the seam reinforcement via an inkjet printer 8th As mentioned above, "just in time" can be done, it would also be possible to include latitude position information as information in the seams.

Thus, roles could then be assigned directly to certain positions in the initial role. This would be indispensable if, for example because of inhomogeneous vapor deposition, the material properties change across the width.

Furthermore, there are also general safety aspects - for example in the field of high-security films.

In the production of high-security films are at the beginning of production by means of an inkjet printer 8th assign sequential numbers to the individual pictures on the slide.

If, in an inspection step, defective areas are removed from the film at the end of production and seams are set, certain number sequences are missing in the film or in the roll goods, which of course are documented separately.

A check of the seams and a check of the applied numbers would always require a comparison with the created documents to make sure that no manipulation took place.

In order to avoid this, it would be possible to integrate the numbers of the images directly adjacent to the seam (in front of and behind) into the seam as information during the ultrasonic seam production process.

Again, for example, via an inkjet printer 8th which is located on the carriage of the sonotrode unit as described above.

Entering the two numbers before and after the seam on the image track could, in this context, be done manually or fully automatically via a number recognition system. A direct connection of this recognition system with the installed inkjet printer on sonotrode slide would then lead to a strong simplification of the entire handling.

In any case, this process would ensure that this seam - with the information stored in it - connects exactly the two ends of the film web.

Another possibility would be to provide a final ultrasound strip (at the end as well as at the beginning / start of the roll) in which Information is included, which also constitute a security instrument. It would be very clear in this case that no manipulation has taken place on the roll, for example because the end strip is present.

Depending on the guide plate design as well as the provision of material, it is also possible to process very thin seam reinforcements with such information and to provide ultrasonic seams.

In 21 the generated seam area is shown. You can see the two slides 1 . 2 with the corresponding carrier layers 12 . 22 as well as the transfer situations 11 . 21 , which have an inkjet-printed seam reinforcement 6 are connected in the side areas due to the structured rotating sonotrode.

The inkjet label is located here between the top of the substrates 12 . 22 and the underside of the suture reinforcement 6 and thus can not be removed after suturing without destroying the suture.

For this purpose, the seam reinforcement must 6 be formed transparent to allow reading the inkjet information. This also means that the ultrasonic separation weld can be seen in this area.

Of course it is also possible in this context, such information directly on top of the suture reinforcement 6 or on both sides of the seam reinforcement 6 to implement, which can result in various advantages as well as disadvantages.

Corresponding 10 Of course, it would also be possible to use a rigid sonotrode in this case, but in this case it is not possible to produce an ultrasound weld pattern, as it does in FIG 20 is shown.

22 to 24 show an alternative embodiment for providing the seam reinforcement 6 using a rotating sonotrode 323 and an anvil wheel 327 ,

22 and 23 represent - in spatial representation - the facts for the application of the upper seam reinforcement 6 medium rotating sonotrode 323 The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

About a roll-out 328 , which is fixed to the carriage of the anvil wheel, becomes the seam reinforcing material 6 in the form of a replicated and provided with microstructures (for example, holograms and the like) material then introduced via a corresponding baffle directly into the ultrasonic welding, whereby also a very clean and positionally accurate seam reinforcement can be applied.

Advantageously, the microstructures should be located directly in the backing material of the seam reinforcement to provide a stable seam - due to the same material properties.

In the case of a PET carrier material 12 . 22 For example, it would be possible to provide a PET backing for seam reinforcement made from a PET two-ply material (normally stretched and amorphous). This makes it possible to replicate the PET carrier in advance and provided with microstructures.

For the suture reinforcement substrate, materials such as PET or PE; PP (OPP; BOPP; CPP); PC; PVC and the like can be used, provided that it is ensured that the introduction of a microstructuring is possible.

The layer thickness of the seam reinforcement 6 is preferably from 4 microns to 300 microns, more preferably from 12 microns to 23 microns, and their width of 1 mm to 40 mm, more preferably from 2 mm to 10 mm, so that there is a good overlap of the separating weld 4 results.

If now the provision of the seam with the help of a seam reinforcement, in which microstructures are introduced, these microstructures are extinguished in areas of energy input by the sonotrode due to reflow, whereby a variety of advantages could arise.

In this context, for example, ultrasound seam connection structures mapped to the motif (e.g., diffractive structures) of the topsheet material would increase counterfeit security at seams.

In 24 is shown according to the generated seam area. You can see the two slides 1 . 2 with the corresponding carrier layers 12 . 22 as well as the transfer situations 11 . 21 which are connected via a replicated seam reinforcement in the side areas and center areas due to the structured rotating sonotrode.

The microstructuring 63 is in this context between the top of the substrates 12 . 22 and the underside of the suture reinforcement 6 and thus can not be manipulated after suturing without destroying the suture be and is extinguished in the areas of ultrasonic connection points / areas.

Of course, for this purpose, the seam reinforcement must 6 be formed transparent to allow a view of the microstructuring. This also causes the ultrasonic separation weld 4 can be seen in the seam area from the top.

Of course it is also possible in this context, such information in the form of a microstructure 63 directly on top of the suture reinforcement 6 or on both sides of the seam reinforcement 6 to implement, which can result in a variety of benefits.

Corresponding 10 Of course, it would also be possible to use a rigid sonotrode here. In this case, however, it is not possible to produce an ultrasonic welding pattern as in 23 is shown.

25 and 26 show an alternative embodiment for attaching the suture reinforcement 6 , The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

Instead of an ultrasonic welding device, however, here is a gluing station as a joining station 32 intended. This only has a counterhold 326 on, after the advance of the film webs 1 . 2 these in the area of the weld 4 on the part of the transfer situations 11 . 21 supported.

As 26 shows, then becomes a seam reinforcement 6 in the form of an adhesive tape on the weld 4 applied. This can be done manually, as in the embodiment shown, but also by means of suitable rollers or other application means.

The seam reinforcement has a carrier layer in this case 61 and an adhesive layer 62 on. The adhesive layer 62 is doing in the field of weld 4 on the carrier layers 12 . 22 the film webs 1 . 2 applied. The adhesive layer 62 and / or the carrier layer 61 can also be configured in multiple layers.

Preferably, the carrier layer 61 the adhesive tape - which can be equipped with the adhesive - from films or films of the class PET; PE; PP (OPP; BOPP; CPP); PC; PVC and the like and has a layer thickness of 4 .mu.m to 2000 .mu.m, preferably from 12 .mu.m to 150 .mu.m.

The adhesive layer 62 It consists preferably of rubber-resin adhesives (cross-linked, non-synthetic, synthetic, non-synthetic), acrylate adhesives, pure acrylate adhesives, acrylate dispersions, modified acrylates, solvent acrylates, acid-free acrylates, optically clear acrylics, thermosetting adhesives, thermally conductive adhesives , electrically conductive adhesives, phenolic resin modified adhesives, repositionable adhesives and / or elastomeric adhesives, silicone adhesives, synthetic rubber adhesives, natural rubber adhesives, special adhesive constructions, hotmelt adhesives (PA, PET, PU and the like), UV adhesives or combinations thereof with a layer thickness of 1 .mu.m to 400 .mu.m, particularly preferably from 20 .mu.m to 50 .mu.m.

Again, the width of the seam reinforcement is again preferably from 1 mm to 100 mm, particularly preferably from 20 mm to 50 mm. Due to the continuous connection of the carrier layers 12 . 22 the film webs 1 . 2 , which was provided via the separating weld in the first process, thereby avoiding that adhesive from the adhesive layer 62 on the side of the transfer layers 11 . 21 emerges and the web is dirty or glued or transferred for example during the embossing process and possibly leads to unwanted web breaks with increasing accompanying process downtime

27 to 31 show an alternative embodiment for attaching the suture reinforcement 6 , The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

Instead of an ultrasonic welding device here, however, a gluing station is provided as a joining station consisting of a liquid adhesive application, carrier application and curing.

This only has a counter-holder, which after the advance of the film webs 1 . 2 these in the area of the weld 4 from the carrier layer transfer layers 11 . 21 supported.

As 29 and 30 show, then a seam reinforcement in the form of a liquid adhesive 9 and a carrier tape 6 on the weld 4 applied. This can, as in the embodiment shown, done manually, but also by means of suitable rollers or other order means partially or fully automatically done.

Subsequently, the curing then takes place ( 31 ) of the applied liquid adhesive layer, the most diverse manner - depending on the nature of the crosslinking - may be formed. Advantageously, a bond or the stability of the seam is provided by way of thermal or UV-induced curing.

Preferably, the carrier tape consists of films or films of the classes PET; PE; PP (OPP; BOPP; CPP); PC; PVC and the like and has a layer thickness of 4 .mu.m to 500 .mu.m, preferably from 12 .mu.m to 150 .mu.m.

The layer thickness of the applied adhesive is preferably in the range from 1 .mu.m to 400 .mu.m, particularly preferably from 20 .mu.m to 50 .mu.m.

Again, the width of the seam reinforcement is again preferably from 1 mm to 100 mm, particularly preferably from 20 mm to 50 mm.

Due to the continuous connection of the carrier layers 12 . 22 the film webs 1 . 2 , which was provided via the separating weld in the first process, thereby avoiding that adhesive from the adhesive layer on the side of the carrier layers transfer layers 11 . 21 emerges and the web is dirty or glued or transferred for example during the embossing process and possibly leads to unwanted web breaks with increasing accompanying process downtime.

32 and 33 show a further alternative embodiment for attaching the seam reinforcement 6 , The initial ultrasonic separation weld 4 is generated in the same way as based on the 1 to 3 explained.

Instead of an ultrasonic welding device, however, here is a hot stamping station as a joining station 32 intended. This has a counterhold 325 on, after the advance of the film webs 1 . 2 these in the area of the weld 4 on the part of the transfer situations 11 . 21 supported. On the side of the carrier layers 12 . 22 is in this case a rotating embossing wheel 327 provided (possible would be a fixed die unit), by means of which the seam reinforcement 6 on the film webs 1 . 2 can be fixed.

The seam reinforcement has a carrier layer in this case 61 and an adhesive layer 62 on. The adhesive layer 62 is doing in the field of weld 4 on the carrier layers 12 . 22 the film webs 1 . 2 applied and by means of the embossing wheel 325 on the film webs 1 . 2 fixed.

Preferably, the carrier layer 61 from films or films of the groups PET; PE; PP (OPP; BOPP; CPP); PC and the like and preferably has a layer thickness of 12 .mu.m to 100 .mu.m. The adhesive layer 62 preferably consists of at least one heat-activatable adhesive, in particular of binders such as chlorinated polyolefins, chlorinated long-chain hydrocarbons, polyacrylates, polyolefins and / or modified maleate resins and / or polyamides, polyester binders, co-polymers, vinyl acetates, alkyd binders, balsam resins, rosin esters, phenolic resins, Bremasinen, Glycerol resin esters, cellulose esters, cellolyids, synthetic binders, phthalate esters and the like or combinations thereof having a layer thickness of 0.5 mm to 100 μm, more preferably of 0.5 μm to 10 μm. Again, the width of the seam reinforcement is again preferably from 1 mm to 100 mm, particularly preferably from 20 mm to 50 mm.

To the adhesive of the adhesive layer 62 to activate, is the embossing wheel 327 and / or the counterpart 325 heated. Preference is given to processing temperatures of 70 ° C to 230 ° C, more preferably from 140 ° C to 180 ° C. The stamping wheel 327 is preferably at a peripheral speed or feed rate of 0.2 m / min to 50 m / min, more preferably from 1 m / min to 5 m / min and a length-related contact pressure per embossing width of 0.5 N / cm to 500 N. / cm, more preferably from 20 N / cm to 40 N / cm.

We in this context instead of a stamping wheel 327 an embossing punch is used, the area-related pressing force of the stamp is preferably in the range of 0.5 N / cm ² to 400 N / cm ² , preferably in the range of 10 N / cm ² to 100 N / cm ² .

Again, due to the continuous connection of the carrier layers 12 . 22 the film webs 1 . 2 avoided that adhesive from the adhesive layer 62 on the side of the transfer layers 11 . 21 emerges and the web is dirty or glued or, for example, during the embossing process is transmitted / possibly and leads to unwanted web breaks with increasing accompanying process downtime / lead.

LIST OF REFERENCE NUMBERS

1

 sheet

11

 transfer position

12

 support layer

13

 end

2

 sheet

21

 transfer position

22

 support layer

23

 end

3

 contraption

31

 Ultrasonic cut and seal station

311

 cylinder

312

 terminal temple

313

 sonotrode

314

 Trennschweißrad

32

 joining station

321

 cylinder

322

 terminal temple

323

 sonotrode

324

 Gegenhalterrad

325

 rigid sonotrode

326

 backstop

327

 anvil

328

 unwind

329

 baffle

33

 transport roller

4

 separating weld

5

 arrow

6

 seam reinforcement

61

 support layer

62

 adhesive layer

63

 microstructure

7

 lower seam reinforcement

71

 transfer position

72

 support layer

8th

 Inkjet Printer

9

 liquid adhesive

Claims (25)

Method for joining a first film web ( 1 ) with a second film web ( 2 ), wherein the film webs ( 1 . 2 ) each a carrier layer ( 12 . 22 ) and a transfer position ( 11 . 21 ), comprising the steps of: a) arranging the film webs ( 1 . 2 ), so that the carrier layer ( 12 . 22 ) of the first film web ( 1 ) in an end region ( 13 ) of the first film web ( 1 ) flat on the carrier layer ( 22 ) of the second film web ( 2 ) in an end region ( 23 ) of the second film web ( 2 ) is present; b) joining the film webs ( 1 . 2 ) in the overlapping end regions ( 13 . 23 ) by ultrasonic separation welding to produce a separating weld ( 4 ); c) attaching the separating weld ( 4 ) on one or both sides at least partially covering seam reinforcement ( 6 ). A method according to claim 1, characterized in that for ultrasonic separation welding a rotating sonotrode ( 313 ) and / or a rotating cutting wheel ( 314 ) or a fixed splitter bar is used. Method according to claim 2, characterized in that a rotating cutting wheel ( 314 ) is used, which has a cutting edge or separating edge. Method according to Claim 2 or 3, characterized in that the sonotrode ( 313 ) at a frequency of 20 kHz to 90 kHz, preferably from 50 kHz to 60 kHz, and / at a feed rate of 0.1 m / min to 50 m / min, preferably from 0.5 m / min to 1 m / min is operated. Method according to one of claims 1 to 4, characterized in that the seam reinforcement ( 6 ) is attached by ultrasonic welding. Method according to claim 5, characterized in that as seam reinforcement ( 6 ) a band is used which consists of the same material as the carrier layer. A method according to claim 5 or 6, characterized in that for ultrasonic welding, a further rotating sonotrode ( 323 ) and / or another rotating anvil wheel ( 324 ) is used. Method according to claim 7, characterized in that the further sonotrode ( 323 ) at a frequency of 20 kHz to 90 kHz, preferably from 50 kHz to 60 kHz, and / or a feed rate of 0.1 m / min to 50 m / min, preferably from 0.5 m / min to 1 m / min is operated. Method according to one of claims 1 to 4, characterized in that the seam reinforcement ( 6 ) is attached by gluing. A method according to claim 9, characterized in that as seam reinforcement ( 6 ) an adhesive tape, in particular with a carrier layer ( 61 ) and at least one adhesive layer ( 62 ) is used. Method according to claim 10, characterized in that the adhesive layer ( 62 gum-resin adhesives (crosslinked, controlled crosslinked, non-crosslinked, synthetic, non-synthetic) and / or acrylate adhesives and / or pure acrylate adhesives and / or acrylate dispersions and / or modified acrylates and / or solvent acrylates and / or acid-free Acrylates and / or optically clear acrylates and / or thermosetting adhesives and / or thermally conductive adhesives and / or electrically conductive adhesives and / or phenolic resin-modified adhesives and / or repositionable adhesives and / or elastomeric adhesives and / or silicone adhesives and / or synthetic rubber Adhesives and / or natural rubber adhesives and / or special adhesive constructions and / or hotmelt adhesives (PA, PET, PU and the like) and / or UV adhesives, in particular having a layer thickness of from 1 μm to 400 μm from 20 microns to 50 microns, consists / s. Method according to claim 10 or 11, characterized in that the carrier layer ( 61 ) of the adhesive tape of films or films, in particular of PET; PE; PP, OPP; BOPP; CPP; PC; PVC (hard and / or soft); Hydrate cellulose; PS; PURE; PU elastomer; PU microfibers; Polyamide; polyimide; UHMW-PP; bio-based plastics (eg PLA); Combinations of plastics; Tedlar; Kapton; Teflon consists and / or of nonwovens and / or aus Foams, in particular PE; PURE; Vinyl; EPDM; neoprene; Cellular rubber, and / or paper / s, in particular smooth, creped; teilgekreppten; flachgekreppten; colored; impregnated; frozen and / or high-temperature papers) and / or of woven fabrics, in particular cotton, viscose staple fiber; PI; PA; coated fabrics, in particular Teflon coated fabrics, glass fabrics; uncoated glass fabrics; Nylon; Polysiloxangeweben; PTFE glass fabrics, impregnated or non-impregnated fabrics; Acetate silk fabrics and / or the like, and / or from a multilayer system and / or combinations of the above systems and / or from a system with metal inserts, in particular with a layer thickness of 4 .mu.m to 2000 .mu.m, preferably from 12 .mu.m to 150 .mu.m. Method according to one of claims 1 to 4, characterized in that the seam reinforcement ( 6 ) is applied by hot stamping. A method according to claim 13, characterized in that as seam reinforcement ( 6 ) a hot embossing belt, in particular with one or more carrier layers ( 61 ) and one or more heat-activatable adhesive layers ( 62 ) is used. A method according to claim 14, characterized in that the heat-activatable adhesive layers ( 62 ) of the hot stamping tape in particular from binders of chlorinated polyolefins and / or chlorinated long-chain hydrocarbons and / or polyacrylates and / or polyolefins and / or modified Maleinatharzen and / or polyamides and / or polyester binders and / or co-polymers and / or vinyl acetates and / or alkyd binders and / or balsam resins and / or rosin esters and / or phenolic resins and / or Bremasinen and / or glycerol esters and / or cellulose esters and / or Cellolynen and / or synthetic binders and / or Phtalatestern and the like, in particular with a layer thickness of 0.5 microns to 100 microns, preferably from 0.5 microns to 10 microns, exist. Method according to claim 14 or 15, characterized in that the carrier layer (s) ( 61 ) of the hot stamping tape, of films or films, in particular of PET; PE; PP, OPP; BOPP; CPP; PC; PVC (hard and / or soft); Hydrate cellulose; PS; PURE; PU elastomer; PU microfibers; Polyamide; polyimide; UHMW-PP; bio-based plastics (eg PLA); Combinations of plastics; Tedlar; Kapton; Teflon consists and / or of nonwovens and / or foams, in particular PE; PURE; Vinyl; EPDM; neoprene; Cellular rubber, and / or paper / s, in particular smooth, creped; teilgekreppten; flachgekreppten; colored; impregnated; frozen and / or high-temperature paper (s)) and / or fabric (s), in particular cotton, viscose staple fiber; PI; PA; coated fabrics, in particular Teflon coated fabrics, glass fabrics; uncoated glass fabrics; Nylon; Polysiloxangeweben; PTFE glass fabrics, impregnated or non-impregnated fabrics; Acetate silk fabrics and / or the like, and / or from a multi-layer system and / or combinations of the above systems and / or from a system with metal inserts, in particular with a layer thickness of 4 .mu.m to 1000 .mu.m, preferably from 12 .mu.m to 100 .mu.m, is / s , Method according to one of the preceding claims, characterized in that the seam reinforcement ( 6 ) a width of 1 mm to 100 mm, preferably of 2 mm to 40 mm, and / or of 100% to 100000% of a width of the ultrasonic separation weld, preferably from 400% to 10000% of the width of the weld ( 4 ), having. Method according to one of the preceding claims, characterized in that the first ( 1 ) and / or second film web ( 2 ) during the ultrasonic separation welding and / or the attachment of the seam reinforcement ( 6 ) by holding means ( 312 . 322 ), in particular mechanical clamping means is fixed. Method according to one of the preceding claims, characterized in that in step a) the end regions ( 13 . 23 ) of the film webs ( 1 . 2 ) based on at least one feature provided on the respective film webs, in particular a registration mark or a graphic design of the respective film webs ( 1 . 2 ) are arranged so that the ultrasonic separation weld is produced in a defined positional relationship with the at least one feature. Contraption ( 3 ) for connecting a first film web ( 1 ), comprising a carrier layer ( 12 ) and a transfer position ( 11 ), with a second film web ( 2 ), comprising a carrier layer ( 22 ) and a transfer position ( 21 ), in particular according to a method according to one of claims 1 to 19, wherein the device ( 3 ) an ultrasonic separation welding station ( 31 ) and one in a conveying direction ( 5 ) of the film webs ( 1 . 2 ) downstream of the ultrasonic separation welding station ( 31 ) arranged joining station ( 32 ) having. Contraption ( 3 ) according to claim 20, characterized in that the joining station ( 32 ) an ultrasonic welding station, a gluing station or a hot stamping station, in particular a roller or Hubprägestation is. Contraption ( 3 ) according to claim 20 or 21, characterized in that the ultrasonic separation welding station ( 31 ) and / or the joining station ( 32 ) a rotating sonotrode ( 313 . 323 ) and / or a rotating cutting wheel ( 314 . 324 ) or have a fixed Trennschweißleiste, the Trennschweißrad or the splitter bar are unstructured, partially structured or structured. Contraption ( 3 ) according to one of claims 20 to 22, characterized in that the ultrasonic separation welding station ( 31 ) and / or the joining station ( 32 ) Holding means ( 312 . 322 ), in particular mechanical clamping means, for fixing the first ( 1 ) and / or second film web ( 2 ) exhibit. Contraption ( 3 ) according to one of claims 20 to 23, characterized in that the first ( 1 ) and / or second film web ( 2 ) by means of respective funding ( 33 ) are guided in a web conveying plane, wherein the joining station ( 32 ) in the web conveying plane and the ultrasonic separation welding station ( 31 ) is arranged below the web conveying plane. Film web comprising at least a first partial film web ( 1 ) and a second partial film web ( 2 ) each with a transfer position ( 11 . 21 ) and a carrier layer ( 12 . 22 ), the first ( 1 ) and second partial film web ( 2 ) in respective end regions ( 13 . 23 ) by ultrasonic separation welding and attaching a seam reinforcement ( 6 ) over a weld produced by the ultrasonic separation welding ( 4 ) are connected in particular by means of a method according to one of claims 1 to 19.

Images