EP2353858A1 - Device for embossing wrapping films - Google Patents

Abstract

The device has an embossing roller (2,4) and impression roller driven over a drive (6). The shaping and impression roller is formed in pin-up configuration, where the embossing roller has teeth (5) outstanding from the roller cylinder. The teeth of the embossing roll are pyramid-shaped or conical to shape logos or reinforcement.

Description

The present patent application relates to a device for embossing wrapping films according to the preamble of claim 1 and to uses of the device for embossing tipping and wrapping films with reinforced areas. Such wrapping films of paper, plastic or hybrid films, in which a. sputtered metal layer located between plastic and / or paper layers, are usable for cigarette mouthpieces or for the packaging of boxes or the like. In the following, the wrapping film for a cigarette mouthpiece, also known as mouthpiece coating, is called "tipping".

Until recently, tipping used either a colored or white paper or foil that was cut to size to cover the mouthpiece area. Lately, tipping has also been provided with signs or logos, analogous to the satinizing and embossing of characters or authentication features on packaging films. Hereinafter, authentication features, characters, words, logos or the like are referred to as "logos".

The embossing of tipping according to the prior art is carried out off-line, ie not in time with a packaging system for cigarettes, in which provided on the one hand tobacco products and at the other end finished packaged cigarette boxes are ejected. In this case, a device is used with two embossing rolls which are wide in relation to the embossing of inner liners and between which a relatively wide foil strip is made, on which several tipping paths, generally at least three, are embossed simultaneously. The tracks are then isolated and shipped to the operators of packaging equipment.

The embossing of Tippings in the offline process with wide embossing rolls and several Tippingbahnen offers u.A. the advantage that the film does not warp and the risk of a nip of a roll is small, but the benefits outweigh if both Tippings and wrapping films for a number of other uses Online can be embossed. In addition to the much greater flexibility of the entire packaging process results in a greater precision of the embossing.

It is therefore an object of the present invention to provide a device and uses thereof, which allows on-line embossing of a large variety of wrapping films, in particular Tippings, in which a big problem, a nicking of the embossing roll with logos over the (den) other roll (s) should be eliminated. Such an apparatus and uses which achieve this object are defined in claims 1, 17 and 18.

Other objects and advantages, such as The wrapping films, even in the on-line process, do not show curling and tubing, or may receive reinforcements embossed in critical areas, are indicated in the dependent claims.

Fig. 1

zeigt schematisch und in perspektivischer Sicht die wesentlichen Teile einer ersten Vorrichtung gemäss Erfindung,

Fig. 2

zeigt eine Ausführungsvariante der Vorrichtung von Fig. 1,

Fig. 3

zeigt eine weitere Ausführungsvariante der Vorrichtung von Fig. 1,

Fig. 4

zeigt schematisch und in perspektivischer Sicht eine weitere Ausführungsform der Erfindung mit drei Walzen,

Fig. 5

zeigt eine Variante zum Beispiel von Figur 4,

Fig. 6

zeigt ein weiteres Ausführungsbeispiel der erfindungsgemässen Vorrichtung,

Fig. 6A

zeigt im Schnitt ein Synchronisationsgetriebe von Figur 6,

Fig. 7

zeigt eine Variante zum Beispiel von Figur 6,

Fig. 8

zeigt ein weiteres Ausführungsbeispiel der Vorrichtung von Fig. 4,

Fig. 9

zeigt eine Variante zum Beispiel von Figur 8,

Fig. 10

zeigt ein weiteres Ausführungsbeispiel der Vorrrichtung von Fig. 4,

Fig. 11

zeigt eine Variante zum Beispiel von Figur 10,

Fig. 12

zeigt eine weitere Variante zu Figur 10,

Fig. 12A

zeigt im Schnitt ein Synchronisationsgetriebe der Anordnung von Figur 12,

Fig. 13

zeigt ein weiteres Ausführungsbeispiel, mit zwei Prägewalzen, und

Fig. 14

zeigt eine Ausführungsvariante zu Figur 13.

Fig. 15

zeigt schematisch und in perspektivischer Sicht eine Vorrichtung mit einer Prägewalze mit einer homogenen Anordnung von Zähnen, die mit zwei Gegenwalzen zusammenwirkt,

die Figuren

16 - 19 zeigen in einer Ausschnittvergrösserung je eine Struktur der beiden weiteren Prägewalzen,

Fig. 20

zeigt eine Ausführungsvariante der Strukturen der weiteren Gegenwalzen,

die Figuren

21 und 22 zeigen weitere Ausführungsvarianten der Strukturen der weiteren Gegenwalzen,

Fig. 23

zeigt in perspektivischer Sicht in einem weiteren Ausführungsbeispiel der Erfindung einen Teil einer Vorrichtung,

Fig. 24

zeigt in perspektivischer Sicht und einer weiteren Ausschnittvergrösserung schematisch die Form und Anordnung von Zähnen von Prägewalzen,

Fig. 25

zeigt einen Schnitt gemäss der Linie XXV-XXV in Fig. 24,

Fig. 26

zeigt einen Schnitt gemäss der Linie XXVI-XXVI in Fig. 24,

Fig. 27

zeigt in perspektivischer Sicht und Ausschnittvergrösserung eine Variante der schematischen Form und Anordnung von Zähnen,

Fig. 28

zeigt einen Schnitt gemäss der Linie XXVIII-XXVIII in Fig. 27,

Fig. 29

zeigt einen Schnitt gemäs der Linie IXXX-IXXX in Fig. 27,

Fig. 30

zeigt in perspektivischer Sicht und Ausschnittvergrösserung eine weitere Variante der schematischen Form und Anordnung von Zähnen,

Fig. 31

zeigt einen Schnitt gemäss der Linie XXXI-XXXI in Fig. 30,

Fig. 32

zeigt einen Schnitt gemäss der Linie XXXII-XXXII in Fig. 30,

Fig. 33

zeigt ein weiteres Ausführungsbeispiel der Erfindung analog dem obigen Ausführungsbeispiel gemäss den Figuren 24 bis 32,

Fig. 34

zeigt ein vereinfachtes Ablaufschema einer Online Prägung und Fertigung von Tippings,

Fig. 35

zeigt eine Prägewalze mit Logozeilen und beidseits Zahnreihen,

Fig. 35A

zeigt eine Variante zur Prägewalze von Fig. 35, wobei keine Logozeilen vorhanden sind, sondern Reihen von Zähnen mit unterschiedlicher Höhe,

Fig. 36

zeigt eine Prägewalze mit Logozeilen ohne beidseitigen Zahnreihen,

Fig. 37

zeigt eine Prägewalze mit Logozeilen und Synchronisationsmitteln,

Fig. 38

zeigt eine Prägewalze mit Logozeilen und beidseits einen Absatz,

Fig. 39

zeigt eine Prägewalze mit Logozeilen und Verstärkungszeilen und -reihen,

Fig. 40

zeigt eine Prägewalze ohne Logozeilen und mit Verstärkungszeilen und -reihen,

Fig. 41

zeigt ein mit der Vorrichtung gemäss Fig. 1 und Prägewalze gemäss Fig. 36 geprägtes Folienband,

Fig. 42

zeigt die Ausschnittsvergrösserung XLII aus Fig. 41,

Fig. 43

zeigt zwei Zigarettenenden, deren Mundstück benachbart angeordnet und mit je einem Tipping versehen sind,

Fig. 44

zeigt eine umhüllte Schachtel mit Logo und verstärkten Rändern,

Fig. 45

zeigt eine Schachtel mit verstärkten Rändern,

Fig. 46

zeigt eine dreieckige Schachtel mit Logo und verstärkten Rändern, und

Fig. 47

zeigt ein geprägtes Muster auf einer Umhüllungsfolie.

Das Prägen von sog. Innerlinern zum Verpacken einer Anzahl Zigaretten, beispielsweise 20 Stück, mittels einer Pin up-Pin up Konfiguration genannten Prägewalzenanordnung ist aus einer grossen Anzahl von Patenten und Patentanmeldungen des gleichen Anmelder bekannt, so z.B. aus den US - 5 007 271 , US - 6 176 819 oder US - 7 036 347 . Den darin beschriebenen Prägeeinheiten ist gemeinsam, dass sie mindestens ein Walzenpaar aufweisen, wovon die erste Walze von einem Antrieb, z.B. über einen Riemen von der Anlage oder durch einen Motor, angetrieben ist und diese angetriebene Walze über die Zähne via der dazwischen durchlaufenden Folie die Gegenwalze(n) antreibt.The invention will be explained in more detail below with reference to drawings of exemplary embodiments.

Fig. 1

shows schematically and in perspective the essential parts of a first device according to the invention,

Fig. 2

shows an embodiment of the device of Fig. 1 .

Fig. 3

shows a further embodiment of the device of Fig. 1 .

Fig. 4

shows schematically and in perspective view another embodiment of the invention with three rollers,

Fig. 5

shows a variant of, for example FIG. 4 .

Fig. 6

shows a further embodiment of the device according to the invention,

Fig. 6A

shows in section a synchronization gear of FIG. 6 .

Fig. 7

shows a variant of, for example FIG. 6 .

Fig. 8

shows a further embodiment of the device of Fig. 4 .

Fig. 9

shows a variant of, for example FIG. 8 .

Fig. 10

shows a further embodiment of Vorrrichtung of Fig. 4 .

Fig. 11

shows a variant of, for example FIG. 10 .

Fig. 12

shows another variant too FIG. 10 .

Fig. 12A

shows in section a synchronization gear of the arrangement of FIG. 12 .

Fig. 13

shows a further embodiment, with two embossing rolls, and

Fig. 14

shows an alternative embodiment FIG. 13 ,

Fig. 15

shows schematically and in perspective a device with an embossing roller with a homogeneous arrangement of teeth, which cooperates with two counter-rollers,

the figures

FIGS. 16-19 show a structure of the two further embossing rollers in a detail enlargement,

Fig. 20

shows a variant of the structures of the other counter-rollers,

the figures

21 and 22 show further embodiments of the structures of the further counter-rollers,

Fig. 23

shows a perspective view in a further embodiment of the invention, a part of a device,

Fig. 24

shows a perspective view and a further detail enlargement schematically the shape and arrangement of teeth of embossing rollers,

Fig. 25

shows a section along the line XXV-XXV in Fig. 24 .

Fig. 26

shows a section along the line XXVI-XXVI in Fig. 24 .

Fig. 27

shows a perspective view and a detail enlargement of a variant of the schematic form and arrangement of teeth,

Fig. 28

shows a section along the line XXVIII-XXVIII in Fig. 27 .

Fig. 29

shows a section along the line IXXX-IXXX in Fig. 27 .

Fig. 30

shows a perspective view and an enlargement of a further variant of the schematic shape and arrangement of teeth,

Fig. 31

shows a section along the line XXXI-XXXI in Fig. 30 .

Fig. 32

shows a section along the line XXXII-XXXII in Fig. 30 .

Fig. 33

shows a further embodiment of the invention analogous to the above embodiment according to the FIGS. 24 to 32 .

Fig. 34

shows a simplified flowchart of an online embossing and production of Tippings,

Fig. 35

shows an embossing roll with logo lines and rows of teeth on both sides,

Fig. 35A

shows a variant of the embossing roll of Fig. 35 , where there are no logo lines, but rows of teeth with different heights,

Fig. 36

shows an embossing roller with logo lines without double-sided rows of teeth,

Fig. 37

shows an embossing roller with logo lines and synchronization means,

Fig. 38

shows an embossing roller with logo lines and a heel on both sides,

Fig. 39

shows an embossing roll with logo lines and reinforcing lines and rows,

Fig. 40

shows an embossing roll without logo lines and with reinforcing lines and rows,

Fig. 41

shows a with the device according to Fig. 1 and embossing roll according to Fig. 36 embossed foil tape,

Fig. 42

shows the cut-out enlargement XLII Fig. 41 .

Fig. 43

shows two cigarette ends whose mouthpiece are arranged adjacent and each provided with a tipping,

Fig. 44

shows a wrapped box with logo and reinforced edges,

Fig. 45

shows a box with reinforced edges,

Fig. 46

shows a triangular box with logo and reinforced edges, and

Fig. 47

shows an embossed pattern on a wrapping film.

The embossing of so-called inner liners for packaging a number of cigarettes, for example 20 pieces, by means of an embossing roll arrangement called pin-up-pin-up configuration is known from a large number of patents and patent applications of the same applicant, eg from US Pat US 5,007,271 . US Pat. No. 6,176,819 or US Pat. No. 7,036,347 , The embossing units described therein have in common that they have at least one pair of rollers, of which the first roller is driven by a drive, for example via a belt from the plant or by a motor, and this driven roller over the teeth via the film passing therebetween counter-roll (n) drives.

In these devices, the metallised surface of the film is satinized, i. provided with a very large number of small indentations, which cause a diffuse reflection of the incident light. By omitting teeth, a logo is created, either as parts of the unembossed glossy film surface or as embossed film surface parts, which show different optical effects depending on the light incidence.

In addition, from the WO 02/076716 A1 or EP 2 027 994 A2 of the same applicant, an embossing unit is known, which consists of three rollers, wherein in the case that all three rollers have teeth, the driven roller drives the two counter-rollers or the rollers are connected to each other via a synchronization means.

In contrast to the previously known embossing of Tippings, in which several soulenbreiten are coined simultaneously with relatively larger embossing rolls than for the previously described embossing rolls for inner liners, are used for embossing of wrapping films and Tippings in the online process Embossing rollers with the same dimensions as used for embossing inner liners and in the case of Tippings usually only one path, shaped according to a coil width, which has two Tippingbahnen.

With the devices described below, it is now possible to perform the embossing, wrapping and separating of cigarettes with Tipping Online, fast, accurate and with wide design possibilities. It also allows a very high quality of the embossing, because an online production allows a better process control.

The device 1 according to Fig. 1 assumes a pin-up configuration which is proven for embossing innerliners, in which all three rollers 2, 3 and 4 have teeth 5 projecting from the surface, wherein one tooth of one roller engages between four teeth of the other rollers a self-synchronization is achieved and the embossing more precise and the drive is simplified. The first roller 2 is driven by a drive 6 shown symbolically, wherein the drive can also be a motor.

According to Fig. 1 are three rolls for the production of a film strip 7, see Fig. 41 , used. The driven by drive 6 roller 2 contains logo lines 8, 8A, for example, contain the logo LB and at the two edges rows of teeth 9, to better transmit the driving force to the counter-rollers. Logo lines are understood to be lines on which any logos formed from teeth 5 are arranged. The counter rollers 3 and 4 have only teeth 5 here.

In contrast to the embossing rollers for embossing inner liners, where the logos are obtained by the fact that in these places the teeth either completely removed or are modified and the other teeth are used for satinizing, when embossing wrapping films on the corresponding embossing roll according to the invention only there teeth are present, where should be marked with the formed of a number of teeth logos, as in particular from Figures 41 and 42 evident.

When satinizing and simultaneously embossing logos on innerliners, the metallized surface of the packaging film is embossed, so that in almost all cases the driven roller has the logos, while in embossing film wrapping it may be advantageous to place the logos on one of the non-driven embossing rollers. to get a positively outstanding logo, see FIG. 2 In this device 24, one of the two non-driven rollers, the embossing roller 4A, has the logo lines. This may also apply to the case in which the device has only two rollers, as in Fig. 3 in which the device 25 comprises a driven roller 2F and an embossing roller 3A having the logo lines driven therethrough. In this case, here, the embossing roller on a double circumference of the driven roller.

In the following, all rollers with logo and / or reinforcing lines and rows and optionally with isolated teeth are defined as embossing rollers, while the other rollers, whether driven directly or indirectly or via synchronizing means, are defined as counter-rollers. However, this does not exclude that even more than one roll of a device can have logo and / or reinforcement rows and rows. In addition, it is assumed that the film strip is always performed in the same orientation with respect to one side between the rollers.

In the embodiments, the teeth 5 are shown in a pyramidal shape with a square outline, wherein the tips can be flattened up to 25%. In the following, however, a number of other pyramidal teeth are presented with a variety of other layouts and shapes, e.g. pyramidal teeth of rectangular outline, e.g. in the direction of the longitudinal axis have a greater length of its base than in the other direction. For certain applications in which the counter rolls are driven by synchronization means, it may also be conical or frusto-conical teeth. The teeth can be pitched, i. a distance between the tips, from 0.05 mm to 0.4 mm, at a theoretical height without flattening of 0.03 mm to 0.3 mm.

Furthermore, individual teeth or groups of teeth, as known from the already cited prior art, may be designed differently. As already described several times in the cited prior art, the rollers are preferably mounted such that they can be deflected to a certain extent in all three coordinate directions.

In the FIGS. 4 to 14 are embodiments of the WO 02/07671 the same applicant has been adapted according to the invention. Device 40 shows three rollers, the same embossing roller 2 as in the preceding examples, which cooperates with a first counter-roller 41 and a second counter-roller 42, wherein the first roller 2 is driven by a drive 6, while the two counter-rollers, neither driven nor with the driven roller via synchronization elements, such as gears are synchronized, but here are driven only via the film strip 7.

In deviation from the previous examples, the three embossing rollers do not have the same structure. The driven embossing roll 2 is according to the embodiment FIG. 4 the same as before, while the first counter-roller 41 is provided with grooves 43 which run around the entire circumference and are arranged parallel to each other such that the teeth 5 of the embossing roller 2 engage in the grooves. The resulting between the grooves 43 rings 44 are also tapered toward the outside and flattened so that they engage between the truncated pyramidal teeth 5.

Analogously, the second counter-roller 42 has longitudinal ribs 45 which, like the rings 44, also taper outwards and are flattened in such a way that the longitudinal ribs 45 cooperate with the teeth 5 of the embossing roller 2. The rings or longitudinal ribs can influence the appearance of the embossing pattern produced by the embossing roller with teeth. With such embossing roll arrangements, it is possible, by varying the teeth 5 or the rings 44 or the longitudinal ribs 46, i. by changing the height, the flanks or edges of the teeth, rings or longitudinal ribs or patterning the upper surface of various embossing patterns or characters produce.

In FIG. 4 or 5 is indicated that the two counter-rollers with the embossing roll 2 are engaged, but this is not necessarily always the case. It is also conceivable that the first or second mating roller is only engaged with the first or preceding roller or can be brought into engagement. Moreover, it may be advantageous to provide more than a total of three embossing rollers for certain applications, which have a different surface structure. Furthermore, both the diameter and the length of the individual rolls be different. In addition to the metal rolls, soft rolls can also be used.

In FIG. 5 can be seen a second device 47 with the same embossing roller 2 and the counter-rollers 41 and 42 with the rings, or longitudinal ribs, wherein the order of the counter-rollers with respect to the order according to FIG. 4 is reversed and seen in the direction of the material 7, here first the embossing roller with the longitudinal ribs engages and then the embossing roller with the rings.

In the embodiment according to FIG. 6 The device 48 has a driven roller 2F and, as in FIG FIG. 4 , as a second roller, the counter-roller 41 with the rings 44. The subsequent embossing roll 4A is similar to that shown in FIG Fig. 2 , In the Figures 6 and 6A It is shown how the rollers 2, 41 and 4A are positively synchronized by the gears 48, 49, 50. Forced synchronization is particularly appropriate if the material warps during embossing.

As a variant to FIG. 6 is the device 51 according to FIG. 7 illustrated, wherein the embossing roller 2 with the toothed roller 3 and the ring roller 41 cooperates. In the device 52 according to Fig. 8 the two counter-rollers are reversed, the rollers of these two versions are not necessarily synchronized.

In FIG. 9 In the device 53, a combination of the drive roller 2F with the embossing roller 3A and the longitudinal rib roller 42, which does not require forced synchronization, is shown.

In the Figures 10 and 11 is shown a further variant, wherein in the device 54, the first roller, the embossing roller 2 and the second roller, the toothed roller 3 from In the foregoing examples, while the third roller, unlike the previous examples, is a rubber roller 55 having a comparatively smooth surface. In the device 56 according to FIG. 11 the order of rolls 3, 4 and 55 is reversed.

In the Figures 12 and 12A is a variant for the execution of FIG. 10 shown, wherein in the device 58, the embossing roll 2 and the toothed roller 3 have the same toothing 5, ie have a pin up-pin-up configuration and the two non-driven rollers 3 and 55 are forcibly synchronized via a gear with the gears 48, 49 and 57 ,

From these examples, variations are conceivable: Thus, the rubber roller 55 may be used instead of the ring roller 41 or the longitudinally ribbed roller 42. In the figures, the bearings, or the two yokes 6A, which receive the two bearings are also schematically drawn. This is also indicated that the bearings of the roll axes can be done individually, in groups or together. Again, the embossing rollers need not be of the same diameter and length, but in deviation from the first example, the diameters of the rollers, if not equal, must be in an integer relationship if the synchronization is by gears, while the length can be individual.

Further experiments have shown that most of the advantages mentioned above also with a device with two embossing rollers according to the FIGS. 13 or 14 can be achieved. The only very schematically drawn device 59 in FIG. 13 also has the embossing roller 2 with the logo and / or reinforcing lines and rows and a second roller 41 with the rings 44 and grooves 43. It is also the drive 6 drawn, while the yokes are not shown.

In FIG. 14 is a device 59A with the embossing roller 2 and the second roller 42 with the longitudinal ribs 45. The other elements are the same as in the previous devices. That for the three-roll system according to Figures 4-12 The same applies mutatis mutandis to the two-roll system according to the FIGS. 13 and 14 , with the advantage of greater simplicity. If, in the case of particularly difficult material, there is a tendency to roll up after being treated with two rollers, a smoothing device, for example with smooth rubber rollers, can be connected downstream.

The FIGS. 15 to 22 put, starting from the EP-A-1 925 443 of the same applicant, further embodiments of counter-rollers to achieve a better embossing in certain embossing operations and paper types. By using the rolls described below, not only a better refraction and neutralization of the paper underlay with respect to wrinkling, tubing and curling is achieved, but in particular also an aesthetically far improved surface of the film. Finally, such a surface of the film allows a finer and more accurate embossing of very fine structures, which serve for example for the production of authentication features.

In the schematic representation of Fig. 15 a device 60 is shown with three rollers, wherein the embossing roller 2 is driven by the drive 6. The film 7 first passes through the pair of rollers 2 and R2 and then the pair of rollers 2 and R3. It follows that the film first passes through the arrangement with different structures of a pair of rollers, and then by the surface structure of the second pair of rolls arrangement differently, ie to be treated inhomogeneous, resulting in a completely inhomogeneous treatment of the film, which shows surprising results.

In Fig. 15 is, as already mentioned, the embossing roller 2 is provided with homogeneously rasterized individual teeth 5 and the logo and / or reinforcing lines and rows, wherein the tooth arrangement defines the basic grid GR. The surface structures of the counter rollers R2 and R3 are symbolized by the letters A - J, and Q - Z, respectively. When comparing Fig. 15 With Fig. 16 it can be seen that the designation R2A denotes the surface structure A of the counter roll R2, and R3Q the surface structure Q on counter roll R3, etc.

In Fig. 16 is given a possible surface structure of the counter rolls R2 and R3. The surface structure A of the roll surface of R2 according to Fig. 16 is defined by longitudinal ribs 45A which are interrupted by individual structural elements in the form of rows of teeth 61, the row of teeth 61 being composed of individual teeth 5 and the teeth in the present example having a truncated pyramidal configuration. The surface of R2 therefore does not consist of uniform longitudinal ribs as in FIG Fig. 4 but from longitudinal ribs which are interrupted by circular rows of teeth, wherein the grid of these structural elements is not the same as the basic grid GR. The structure Q of the third mating roll R3 here consists of uniformly arranged circular ribs 44, as shown in FIG Fig. 4 ,

In Fig. 17 It is shown that the surface structure B of the counter roll R2 has the interrupted longitudinal ribs 45A and double rows of teeth 62, it being understood that is that it can also be three or more rows of teeth that interrupt the longitudinal ribs. The counter roll R3 has the same surface structure Q as shown Fig. 16 on. In Fig. 18 it is shown that the counter-roller R2 has the same surface structure A as in FIG Fig. 16 while the counter roll R3 has a surface structure R in which circular ribs 63 are interrupted by longitudinal rows of teeth 64, the rows of teeth consisting of individual teeth 5.

In the illustration according to Fig. 19 the counter roll R2 has the surface structure B as in FIG Fig. 17 while the counter roll R3 has a surface structure S in which the circular ribs 63 are interrupted by double longitudinal rows 65, these rows also consisting of individual teeth 5.

Already from the description of FIGS. 15 to 19 shows that a great variety of variations is conceivable. Thus, it is of course possible to provide not only structural elements in the form of single or double rows of teeth, but also three or more rows of individual teeth, between which longitudinal or circular ribs are arranged.

In addition, it will be understood that both the dimensions of the individual teeth and the spacing between the rows of teeth as well as the longitudinal or circular ribs may vary in dimensions and distances, provided that they are sized and arranged to be always engaged, or rolling with the rastered teeth of the counter roll R1 can be brought. Of course, any combination of the specified types of rolls of both mating rolls is possible.

While in the Fig. 15 - 19 Surface structures are shown in which the structural elements are arranged orthogonal to the longitudinal axis of the rollers are in the FIGS. 20 to 22 Shown surface structures in which the individual teeth or continuous ribs structure elements are arranged helically.

In Fig. 20 For the counter roll R2, a surface structure G is shown in which in the longitudinal ribs 45 as shown in FIG Fig. 19 Structural elements 66 are arranged helically and, for example, at an angle of 45 ° to the longitudinal axis, which in turn consist of rows of teeth with individual teeth 5. The counter-roller R3 has a surface structure X, which is formed in mirror image to the structure G, but wherein structural elements 67 of two rows of teeth 5 and at the angle of z. B. 45 ° to the longitudinal axis of the counter roll are arranged. As in the Fig. 17, 18 and 19 illustrated, the counter roller R3 with surface structure X also rings 44, which are pierced by the structural elements 65.

In Fig. 21 For counter rolls R2, a surface structure H is shown whose structural elements do not consist of rows with individual teeth, but of circular ribs 68, wherein the distances between the individual ribs is variable and there are no longitudinal ribs. The counter roll R3 has the surface structure Y, which consists of longitudinal ribs 45. Again, the interaction of the counter rolls R2 and R3 results in a non-homogeneous refraction of the paper fibers.

The mating rolls according to Fig. 22 are analogous to the counter rolls according to Fig. 20 can be seen by helically arranged ribs 68 A are provided as structural elements, but without intervening longitudinal or Transverse ribs, whereby here too the distances between the individual ribs can be variable. The ribs 68B of the counter roll R3, which give the surface structure Z, are arranged in close tightness and helical in this example. Here, too, an interaction of the two counter-rollers R2 and R3 gives a non-homogeneous embossing and thus a maximum refraction of the paper fibers.

In the FIGS. 23 to 32 Further variants of roll surfaces and teeth are shown, with the exception of the WO-A1-2009 / 155720 of the same applicant. Fig. 23 shows a device 69 with the embossing roller 2, which is shown here in a different representation than previously drawn, with teeth 70 and the logo and / or reinforcing lines and rows, which cooperates with a ring roller 41 and a toothed roller 4B. The embossing and toothed roller can also be reversed. Instead of the ring roller 41 may also be a ribbed roller 42.

Like from the FIGS. 24 to 26 shows, the opening angle of the tooth flanks are different in radial and axial alignment. In radial alignment, ie according to the section XXV-XXV, or in the drive direction, the opening angle α between two adjacent flanks 71FR and 72FR of the teeth 71 and 72 is smaller than the opening angle β between the two axially aligned adjacent tooth flanks 72FA and 73FA Teeth 72 and 73 according to section XXVI-XXVI of Fig. 24 ,

The theoretical tooth height X, measured from the theoretical tooth tip ZS to the tooth root ZG1, is greater than the tooth height Y between the theoretical tooth tip ZS and the tooth root ZG2, these theoretical tooth tips ZS, measured from the rotation axis, being equidistant for all teeth and for the information given in

Overlap point of the tooth flanks are. As mentioned, these are theoretical values that do not take into account manufacturing tolerances and wear. In the present case, the practical tooth height X 'and Y' are also plotted, the difference X'-Y 'being the same as for the theoretical tooth heights.

Because the maximum tooth height X or tooth flank surface is present in the drive direction, the force transmission between the drive embossing roller and the following counter roller can be fully effective. In the axial direction, according to the level IV-IV no driving force is transmitted and therefore sufficient in this orientation a lower tooth height.

This makes it possible to reduce the minimum distances of the teeth from each other, resulting in a finer embossing and a better treatment of the paper of the packaging film. In the aforementioned, previously known embossing rollers are the minimum distances, the step, about 0.3 mm at a height of the teeth up to 0.5 mm. With the present embodiment of the teeth, it is possible to reduce the minimum distance up to 0.05 mm.

On this basis, it is possible, while maintaining the whole driving force, to make the base of the teeth rectangular, according to the FIGS. 27 to 29 the length L1 of the base of tooth 75, and the teeth 76-79 in radial alignment smaller than the length L2 in axial alignment, or according to the FIGS. 30 to 32 the length L3 of the base of tooth 80, or the teeth 80-84 in radial alignment may be greater than the length L4 of this tooth in axial alignment. It should be noted, that it is schematically drawn lengths, since it depends only on the difference.

The opening angle α may be in a range of 40 ° - 90 ° and the angle β in a range of 60 ° - 120 °, where α is always less than β. The tooth height differences, i. X - Y, can be in a range of 0.02 - 0.43 mm.

In FIG. 33 a further device 85 is shown in which the teeth 5 are arranged with a square or rectangular base not parallel and perpendicular to the roll axes A1, A2, A3, but rotated by an angle d. In this embodiment, the angle d = 45 °. The angle d may be in a range of greater than 0 ° to 89 °, preferably in a range of 35 ° to 60 °. The embossing roller 2G has the usual logos and the like, the toothed roller 4G has only teeth 5, and ring roller 41G has obliquely arranged rings 44G which may be continuous or interrupted. The individual teeth 5 and the rings 44G are each rotated by the angle d with respect to the roll axes.

Such as in the FIGS. 1 . 33 to 47 2, 2A, 2B, 2C, 2D, 2E, 2G, there are relatively large areas which are not provided with teeth and which, because it is the embossing of a web, corresponding to a reel, is shown on the driven roll 2, 2A, 2B, 2C, essentially lead to two problems. Once it can cause a distortion of the film strip, which can come into play especially when cutting and if the embossing rollers are not continuously engaged, can be caused by the resulting gaps blows that can destroy the embossing rollers quickly. In the rare case that two single coils are to be coined a double track, the problems remain.

The first problem can be solved by the fact that the logo lines 8, 8A; 15, 15A; 16, 16A are arranged offset on the two Tippingbahnen 7A and 7B, as can be seen from the drawings. In the four embodiments shown for embossing Tippings according to the Figures 35 . 36 - 38 are all logo lines 8; 15; 16 of the embossing rollers 2, 2A, 2B, 2C, in each case one line opposite to the logo lines 8A; 15A; or 16A offset from one another.

This means that when cutting the Tippingbahnen no tensions arise and that subsequently the Tippingbahnstücke can be easily glued around the cigarette mouthpiece to give a Tipping, where no seam is visible. This goes out Fig. 43 show, in the two cigarettes 10 and 11 are shown, around their ends, for example, with filters, the Tippings 12 and 13 are wrapped.

In the examples according to the FIGS. 35 and 36 the teeth are uniformly distributed around the entire circumference and the teeth of at least one logo line 8, 8A always engaged with teeth of at least one other embossing roller. This ensures that not only the required drive of the counter-rollers is ensured, but also that a nicking of the roller with the logos over the other rollers and thus harmful vibrations are avoided.

In particular, if, for example, according to Fig. 37 in the logo lines 15, 15A of the embossing roll 2B fewer teeth are present or fewer logo lines 15, 15A than in the embossing roll according to the FIGS. 35 or 36 , And the required drive of the counter-rollers alone is no longer guaranteed by the teeth, synchronization means 14, such as Gears, timing belts or electronic drive means used to drive these synchronously with the embossing roller.

In Fig. 38 schematically illustrates the situation in which the logo lines 16, 16A are designed so that a Einnicken could not be avoided, unless appropriate measures are taken. In this embodiment, on both sides of the driven roller 2C paragraphs 17 are arranged so that the embossing roller is always in the required contact with the counter-rollers, so that a buckling is avoided and thus the distance of the rollers to each other always remains constant.

All the logo lines shown have in common that they are arranged and shaped such that after the gluing of the wrapping webs, the logos applied thereto at the interfaces thereof seamlessly, i. without visible disturbances of the continuity of the logo, e.g. a lettering may appear.

In Fig. 41 is enlarged and shown schematically the structure of the logos 8, 8A on the embossing roller 2 shown in section and the structure and arrangement of the embossed logos 38, 38A on the film strip 7 with the two Tippingbahnen 7A and 7B, wherein the embossing roll has been omitted there and on one of the counter-rollers 3 or 4 is seen. The foil strip is structured only at the locations where logo lines were present on the embossing roll 2 and is narrower than the embossing rolls.

In Fig. 42 is even better illustrated that the letters of the logo on the film strip are formed by depressions, which have been caused by corresponding teeth 5 on the driven embossing roller 2. Similarly, the logos on one of the counter-rollers be arranged, see Figures 2 and 3 , Wherein, with the same orientation of the sides of the foil strip with respect to the rollers, these logos are formed by elevations.

Fig. 43 illustrates a Tippingbahn piece glued on two cigarette ends 10, 11, wherein the next step, the cutting and separation of the two Tippingbahn pieces will be done. In the present embodiments, the logos 38 and 38A are made up of the two letters LB, but any characters, characters, or authentication features can be assembled from any constellation of teeth.

Analogous to the previously known stamping units for inner liners, a stamping unit for Tippings or other wrapping films can also consist of only two embossing rollers, according to Fig. 3 the counter roll 3A has a double diameter of the driven embossing roll 2F and the logos 8, 8A and the rows of teeth 9. The counter-roller can also be a ring roller 41 according Fig. 13 or a ribbed roller 42 according to Fig. 14 be.

As mentioned above, the Tippings are usually marked off-line on multiple coil width, isolated on a coil width and applied to the cigarette ends with the previously known methods. However, the device according to the invention allows the whole process to be read more precisely and easily online, i. during the packaging process.

In the highly simplified flow chart of the FIG. 34 the film strip 7 is embossed by the embossing unit 1 and then in the gluing and cutting unit 18, the double-dipping is wrapped around two cigarette ends and the cigarettes are separated. From there the individual arrive Cigarettes either in a feed robot 19 and from there to the online packaging system 20 to be packaged by the innerliner or directly into the online packaging system, as indicated by the arrows 21, 22, 23. This on-line process, along with the relatively easy interchangeability of the embossing rollers and the wide variety of design options, results in a significant increase in productivity and design options.

In the embodiment according to the FIGS. 41 to 43 the embossing and application of Tippings is shown, but can be as embossed film also serve for wrapping objects other than cigarettes, especially where it matters that it does not warp and cost-effective embossing of various patterns, for example, also desired on white paper is.

In the FIGS. 44 to 47 is shown as a further application of the inventive devices, the embossing of reinforcement zones on wrapping paper and the use of the same for wrapping boxes. At the same time, these reinforcement zones also have a decorative character, in which case the reinforcement rows and rows on the embossing rollers and thus the corresponding reinforcement zones on the film need not have entire rows of teeth; they can also be composed of individual areas, see Fig. 39 , In particular, the reinforcing rows on the embossing rollers prevent the Einnicken the same in most cases.

Embossing with the pin up - pin up process of small indentations or elevations opens the possibility of relatively thin wrapping films for packaging cigarette boxes and boxes for high quality To use goods such as watches, electronic parts, expensive medicines or foods such as chocolate or cheese with or without logos in the online process, which have reinforcement zones at the critical points, ie at the edges, where there is a risk of the film breaking. Characterized in that the film is embossed at these points with the inventive device, the risk of tearing is reduced. In addition, it is ensured by the very fine and exact embossing that after opening the original packaging this can not be closed unnoticed. This security is enhanced if the fine lettering and the like merge seamlessly after wrapping. As with the Tippings, it is important that the film does not warp after cutting.

One with the embossing roll 2D according to FIG. 39 embossed film is according to the box 30 according to FIG. 44 such that the reinforcement zones 31 and 32 embossed with the reinforcing rows and rows 26 and 27 are located at the edges of the box, wherein one or more sides may have logos 38, 38A. In the FIG. 39 shown gaps 29 of the vertical reinforcing rows 27 are shown selectively and as a possibility.

The wrapping film for the box 33 of FIG. 45 was with the embossing roll 2E of FIG. 40 marked and shows only gain zones 31 and 32. In FIG. 46 As an alternative, a wrapping film is shown around a triangular box 34, whose reinforcement zones 31 and 32 and logos 38, 38A have been embossed with an embossing roller corresponding to the embossing roller 2D of FIG FIG. 39 equivalent.

The embossed wrapping paper according to Fig. 47 has fine horizontal lines 35 and vertical rows 36, the both decorative and act as reinforcement zones. It goes without saying that the symbolically represented logos and reinforcement zones of the drawings represent a very wide variety of design options.

Claims (18)

Device for embossing wrapping films, having at least one embossing roller and at least one counter-roller, one of which is driven by a drive (6), characterized in that the embossing and counter-roller (s) are formed in a pin-up-pin-up configuration in which at least the embossing roll (2, 2A, 2B, 2C, 2D, 2E, 2F, 2G, 3, 3A, 4) has teeth (5) protruding from the roll cylinder, the teeth (5) of the embossing roll for embossing logos and / or reinforcements are pyramidal or conical and are at least partially also the drive of the counter roll (s) and the embossing and counter roll (s) are designed such that they can be used in the on-line method and embossing only a foil strip a dozing of the embossing roll due to gaps in / or between logo and / or reinforcement lines and rows. Device according to claim 1, characterized in that the means for avoiding pitching are the arrangement of the teeth and the distances in / between the log and / or reinforcement rows and rows such that always teeth of these logo and / or reinforcement rows and rows with teeth (5), grooves (43) or ribs (44, 45, 45A, 63) of the counter roll (s) are engaged. Apparatus according to claim 1, characterized in that the means for avoiding Einnicken each have a shoulder (17) on both edges of the embossing roller (2C) with the logo lines (16, 16A) and / or with the reinforcing lines and rows (26, 27 , 28). Device according to one of claims 1 to 3, characterized in that the embossing roll (2) logo lines (8, 8A) with teeth (5) which are arranged to logos and rows (9) of teeth (5) on both edges to the drive. Device according to one of claims 1 to 3, characterized in that the embossing roller (2B, 4A, 2) logo lines (8, 8A, 15, 15A) with teeth (5) which are arranged to logos and with the (the) other Roller (s) (3, 4, 2F, 41, 3, 55) cooperating synchronization means (14, 48, 49, 50) has (s). Device according to one of claims 1 to 5, characterized in that the embossing roller (2D, 2E) teeth (5) arranged to logos and / or longitudinal and radial reinforcing lines (26) and rows (27, 28) are. Device according to one of claims 1 to 6, characterized in that it comprises an embossing roll (2, 2A, 2B, 2C, 2D, 2E, 2F) with logo lines (8, 8A) and / or reinforcing lines (26) and rows (27 , 28) and one or two mating roll (s) (3; 4, 4A, 41, 42, R2, R3) cooperating with the embossing roll. Device according to one of claims 1 to 6, characterized in that it comprises a driven counter-roller (2F) and at least one embossing roller (3A) cooperating with said counter-roller with logo lines (8, 8A) and / or reinforcing lines (26) and rows (27 , 28). Apparatus according to claim 7, characterized in that the counter-roller with isolated teeth (5) or with circular ribs (44, 68), helical ribs (68A, 68B), longitudinal ribs (45) with or without structural elements (65-67) provided from rows of teeth is, wherein the ribs are flattened and whose cross-section is outward tapered, or the counter-roller (55) has a smooth surface. Device according to one of claims 1 to 9, characterized in that the pyramidal teeth have a substantially rectangular outline, wherein the opening angle (α) between the substantially radially aligned, respectively adjacent tooth flanks (31FR, 32FR, 131FR, 132FR) is smaller than the opening angle (β) between the respective axially adjacent, respectively adjacent tooth flanks (32FA, 33FA, 132FA, 133FA) and the tooth height (X) in radial alignment, measured from the tooth tip (ZS) to the tooth base (ZG1 ), greater than the tooth height (Y) in axial alignment, measured from the tooth tip (ZS) to the tooth base (ZG2). Device according to one of claims 1 to 10, characterized in that the edges of the pyramidal teeth (5) are arranged either orthogonal to the longitudinal axis of the roll or at an angle (d) thereto between 1 ° and 89 °. Device according to one of claims 1 to 10, characterized in that the base area of the individual teeth (31-34; 131-134) is square. Device according to one of claims 1 to 12, characterized in that the counter-roller (s) are mounted such that they are deflectable in the longitudinal direction of the axis and / or in the pressing direction and / or in the running direction of the material to be embossed. Device according to one of claims 1 to 13, characterized in that individual teeth of the embossing roll (2, 2A, 2B, 2C, 2D, 2E, 2F, 2G, 3, 3A, 4) are in height or shape are changed to give embossed characters whose appearance changes according to the viewing angle. Device according to one of claims 1 to 14, characterized in that the teeth (5) of the embossing roller for the design of logos are arranged and designed such that during the passage of a film strip (7) on the same at least two wrapping sections (7A, 7B) are embossed in such a way that the logos (38) embossed on a section (7A) are each arranged offset in the direction of flow to the logos (38A) on the other section (7B). Apparatus according to claim 15, characterized in that the film strip (7) made of paper or plastic or is a hybrid film and can be processed into tipping (12, 13) for cigarette mouthpieces. Use of the device according to claim 15 for the online production of tippings in a system for the production of cigarette packets, the device being connected to an adhesive and cutting unit (18) and the separated cigarettes (10, 11) to the tipping (12, 13 ) are fed either to a feed robot (19) and from there to the packaging installation (20) or directly to the packaging installation. Use of the device according to one of claims 1 to 14 for the on-line production of films for wrapping objects (30, 33, 34), the wrapping films having reinforcing zones embossed with the teeth arranged to reinforcing lines and rows (26, 27, 28) ( 31, 32, 35, 36) are cut such that the reinforcement zones are at the edges of the article.

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