DE102017205180A1 - Perforating unit and method for perforating a flat-folded film tube - Google Patents

Abstract

Described are a perforator and a method for perforating a flat-folded film tube. Accordingly, the perforator comprises a continuously rotatable magnetic cylinder and impression cylinder and a magnetically attached to the magnetic cylinder flexible punching sheet with cutting lines for perforation of the film tube. Characterized in that further comprises a control for the magnetic cylinder, with which the peripheral speed of the cutting lines can be adjusted in the effective range with the impression cylinder to a transport speed of the film tube and outside of the effective range to the opposite, different perforations in a flexible and economical manner at different intervals be made along the film tube. The stamping sheets also allow a cost-effective format change at the perforating.

Description

The invention relates to a perforator and a method for perforating a flat-folded film tube.

As is known, labels can be produced from sheet-like materials by passing the material to be punched between a rotating punching cylinder and an impression cylinder. Here, the processing of multilayer materials is possible, for example, for selective punching of self-adhesive labels on a carrier tape. The stamping of sandwich labels, so-called piggybacks or the like, is known in principle. For this purpose, for example, sheaths are formed with different heights on the punching cylinder.

Flexible punching devices with adjustable gap between punching cylinder and impression cylinder are for example in the DE 10 2004 032 030 A1 . DE 10 2010 026 607 A1 and US 2007/101844 A1 disclosed.

From the DE 10 2011 076 863 A1 . DE 10 2014 216 191 A1 and DE 10 2015 204 821 A1 Furthermore, the transverse perforation of films, in particular of flat longitudinally folded film tubes, by means of punching cylinder and counter-pressure cylinders is known. Such perforations serve, for example, the separation of label sleeves for containers by tearing off by means of longitudinal tension. The described perforators are suitable for a continuous transport of film webs with a comparatively high processing speed.

However, so far only transverse perforations could be made in this way. In contrast, longitudinal perforations require a gradual and correspondingly slow transport of the film webs.

For example, for the production of tear tabs on beverage labels, a faster and combined production of longitudinal perforations and transverse perforations would be desirable. In addition, different perforations with the lowest possible outlay on equipment and in a flexible manner to one and the same perforating are to be made.

Therefore, there is a need for improved perforating and perforating processes for film tubes based on rotary cutting and counter-pressure rollers.

The object is achieved with a perforating according to claim 1. Accordingly, this is suitable for processing a longitudinally folded film tube and comprises a continuous rotatable magnetic cylinder and a counter-pressure cylinder and a magnetically attached to the magnetic cylinder flexible punching sheet with cutting lines for perforating the film tube. Furthermore, a control for the magnetic cylinder is provided with which the peripheral speed of the cutting lines can be adjusted in the effective range with the impression cylinder to a transport speed of the film tube and changed outside of the effective range on the other hand.

Consequently, one can adapt the working cycle of the perforating to the transport speed of the film tube and to a predetermined distance between the perforations to be produced with the cutting lines. The film tube is in this case transported at a constant speed through the perforator. The magnetic cylinder rotates continuously, but with variable speed, so that the peripheral speed of the cutting lines varies in a controlled manner between the individual punching operations.

Preferably, the control for adapting the peripheral speed is formed outside the effective range as a function of a label length to be produced. For example, tear-off perforations at a distance of a predetermined label length in the film tube can thereby be produced, although the distance between the associated cutting lines on the stamped sheet deviates therefrom.

For an increase in the label length to be produced, the peripheral speed outside the effective range would be reduced, for example. It then takes correspondingly longer, until the cutting lines come back into the effective range with the impression cylinder. At a constant transport speed, the perforations produced by the cutting lines are then further apart in the longitudinal direction of the film tube. Conversely, this also applies to a reduction of the label length to be produced in each case.

Preferably, the cutting lines extend in a first region of the stamping sheet in the transverse direction and / or longitudinal direction and in particular are so high that only the wall of the film tube facing the stamped sheet is perforated. Thus, for example, a pull-tab and / or a tear-open line can be formed, in particular only in the wall of the film tube facing the magnetic cylinder and the stamped sheet, while the wall of the film tube lying behind remains substantially intact. Instead, the cutting lines can also be so high that both walls of the Foil tube for the production of tear tabs / lines are perforated.

Preferably, the cutting lines extend in a second region of the punching plate only in the transverse direction and are in particular at least so high that both superimposed walls of the film tube are perforated over its entire width, with the foil tube laterally delimiting folding edges. This makes it possible to form tear-off perforations for the subsequent singulation of the film tube to label sleeves.

The cutting lines may be lower in the first region than the cutting lines in the second region.

The cutting lines of the second region weaken the material of the film tube more particularly in its longitudinal direction than the cutting lines of the first region. Consequently, tear-off perforations at longitudinal tension in the film tube produced with the cutting lines of the second region, in particular when singulated to label sleeves, break more readily than the tear tabs and / or tear lines produced with the cutting lines of the first region. The latter remain intact when singling.

For this purpose, the cutting lines of the second region produce, for example, larger perforation holes than the cutting lines of the first region and / or a smaller spacing between directly adjacent perforation holes.

Preferably, the perforating further comprises flexible punching plates with different cutting lines, which can alternatively be magnetically attached to the magnetic cylinder for producing different perforation pattern in the film tube. The stamping sheets can be provided comparatively inexpensively as clothing parts for the production of different labels and perforation patterns and replaced when worn.

Preferably, the perforating further comprises flexible stamping plates with different thickness, which can be alternatively attached to the magnetic cylinder magnetically for the perforation of film tubes of different thickness and / or different material. The stamping sheets are then provided in the form of interchangeable clothing parts. The thickness of the stamped sheets then depends, for example, on a predetermined gap between the magnetic cylinder and the impression cylinder and the thickness of the film tube to be perforated.

The stated object is also achieved by a method according to claim 7. Accordingly, this is used for perforating a flat-folded film tube, wherein the film tube runs at a particular constant transport speed between at least one impression cylinder and magnetic cylinder with it magnetically fixed punching sheet through and is perforated by formed on the punching sheet cutting lines. Furthermore, the peripheral speed of the cutting lines in the effective range with the impression cylinder is adapted to a transport speed of the film tube and changed outside of the effective range on the other hand. For this purpose, the angular velocity of the magnetic cylinder is changed according to the required peripheral speed of the cutting by means of electrical control. Thus, the advantages described with respect to claim 1 can be achieved.

Preferably, the rotational speed of the magnetic cylinder is changed periodically between a first rotational speed for contact of the cutting lines with the film tube and at least a second non-contact rotational speed. This allows the production of similar labels with a certain length and arrangement of the individual perforations on the label with simultaneous continuous transport of the film tube.

Preferably, combined transverse / longitudinal perforations are selectively produced in the wall of the film tube facing the magnetic cylinder and / or in both superimposed walls of the film tube, in particular for the formation of tear tabs and / or tear lines. For this purpose, in the punching plate both in the transverse direction and in the longitudinal direction, that is, for example, obliquely, extending cutting lines are formed, which roll on the film tube to its perforation. This allows a particularly efficient production of tear tabs on label sleeves for containers. Tear tabs and tear lines serve to secure the closure or the like on the finished labeled product, tear-off perforation, however, the separation of the label sleeves.

Preferably, transverse perforations reaching functionally over the entire width of the film tube are produced in both superimposed walls of the film tube, with the gap being laterally delimited by the film tube. This serves to generate predetermined tear lines for the subsequent singulation of the film tube to label sleeves. The separation is then possible with continuous further transport of the film tube by tearing off by means of longitudinal tension over the entire width of the film tube. The folding edges are then not interrupted on the outside by perforation holes or similar punched out.

Preferably, the transverse perforations resist a lower longitudinal tension in the film tube than the transverse / longitudinal perforations. As a result, it is possible to avoid that the perforation lines for the tear-open tabs are already separated during singulation. The tear-open tabs should only be torn open in the intended use of the finished labeled product.

Preferably, the transverse perforations and the transverse / longitudinal perforations are made on the same magnetic cylinder. There are then formed correspondingly shaped cutting lines for the production of both perforation on one and the same punching plate. This allows a particularly efficient production of tear tabs and singulation perforations, as well as a particularly precise arrangement of the transverse perforations and the transverse / longitudinal perforations to each other.

Preferably, the peripheral speed outside the effective range for positional adjustment of the transverse perforations and / or transverse / longitudinal perforations in the longitudinal direction of the film tube is purposefully reduced or increased. This allows a fast format adaptation of the perforating unit by programmed change of the rotational speed of the magnetic cylinder.

Preferably, the film tube is a shrink tube or an elastic tube for labeling containers. By way of example, the film tube can be designed for labeling and / or securing the closure of a closure region and / or neck region of a container.

Preferably, the stamped sheet is exchanged for the production of differently perforated label sleeves and / or for perforation of different film tubes. This allows a flexible and economical production of different labels. In particular, an exchange of the magnetic cylinder for a format change is not required. Instead, different flexible punching plates for format change on the magnetic cylinder can be easily fixed by magnetic force and changed accordingly fast.

• 1 eine schematische Ansicht des Perforierwerks in Transportrichtung des Folienschlauchs gesehen;
• 2 eine schematische seitliche Ansicht des Magnetzylinders und des Gegendruckzylinders im periodischen Geschwindigkeitswechsel;
• 3 eine schematische Draufsicht auf ein Stanzblech und einen damit perforierten Folienschlauch; und
• 4 eine schematische Draufsicht auf ein Stanzblech und einen damit perforierten Folienschlauch.

A preferred embodiment of the invention is shown in the drawing. Show it:

• 1 seen a schematic view of the perforating in the transport direction of the film tube;
• 2 a schematic side view of the magnetic cylinder and the impression cylinder in the periodic speed change;
• 3 a schematic plan view of a stamped sheet and a perforated film tube; and
• 4 a schematic plan view of a stamped sheet and a perforated film tube.

As the 1 reveals, includes the perforator 1 in a preferred embodiment, a magnetic cylinder 2 , an impression cylinder 3 and one on the magnetic cylinder 2 magnetically fixed and flexible stamping sheet 4 , On the stamped sheet 4 is a schematically indicated cutting line 5 for perforating one through the perforator 1 in the transport direction 6a running film tube 6 educated.

Like in the 1 in schematic exaggerated representation is clear, the film tube 6 is folded flat in the longitudinal direction and therefore has the punched sheet as it passes through the perforating 1 4 facing wall and a counter-pressure cylinder 3 facing wall.

As the 1 further clarified, is at least the magnetic cylinder 2 by electric motor 7 , which is preferably a servomotor, driven. The rotational speed DG, for example in the form of the angular velocity of the magnetic cylinder 2 can by controlling the engine 7 by means of a controller 8th be specifically influenced.

As the 2 can be seen in a schematic representation, can for individual rotational positions of the magnetic cylinder 2 different rotational speeds DG1, DG2 are given, between the angular velocity DG in the current working mode then with each revolution of the magnetic cylinder 2 periodically fluctuates.

The flexible stamping sheet 4 includes at least a first area 4a in which first cutting lines 5a extend both in the transverse direction Q and in the longitudinal direction L. This is to be understood in particular that the first cutting lines 5a also obliquely, so can run in combination of transverse direction Q and longitudinal direction L.

Additionally or alternatively, on the flexible stamping sheet 4 at least a second area 4b with a second cutting line extending only in the transverse direction Q. 5b educated.

In the example shown are on the punched sheet two second areas 4b with identical second cutting lines 5b in circumferentially uniform distribution to each other for the production of Abreißperforationen in the film tube 6 formed with identical distances from each other.

In the example shown, two further areas are also on the punching plate 4a with identical first cutting lines 5a formed in circumferentially uniform distribution to each other for the production of tear tabs. The first cutting lines 5a could under this condition arbitrarily on the stamping sheet 4 that is, between the second cutting lines 5b be arranged.

The peripheral speed UGa of the first cutting lines 5a and the peripheral speed UGb of the second cutting lines 5b are in the effective range with the impression cylinder 3 , or in other words, when in contact with the perforator 1 running film tube 6, substantially identical to the transport speed 6a of the film tube 6. The magnetic cylinder then rotates at a first rotational speed DG1.

In contrast, the peripheral speed UGa, UGb of the first cutting lines 5a . 5b , outside the effective range 9 So if the first cutting lines 5a . 5b do not touch the film tube 6, be changed. This is preferably done by deceleration or acceleration of the magnetic cylinder 2 to the second rotational speed DG2.

Depending on the number and position of the first cutting lines 5a . 5b adjusts the control 8th the rotation speed DG thus periodically between the first rotation speed DG1 and the second rotation speed DG2. In between, any gradients of the rotational speed DG are possible in principle.

In the 2 are circumferential sections of the punching plate 4 , which with the first rotational speed DG1 through the effective range 9 move, hatched marked. Umfängliche sections moving with deviating rotational speed DG through the effective range, for example, with the second rotational speed DG2 are marked in black. This is merely a schematic clarification.

Consequently, it can be adjusted how far the film tube 6 between the individual perforation processes with the first and second cutting lines 5a . 5b is transported. Assuming a substantially constant transport speed 6a of the film tube 6 is thus the distance between the with the first and second cutting lines 5a . 5b on the film tube 6 produced transverse / longitudinal perforations 10a and transverse perforations 10b are set.

In the example shown, with the first cutting lines 5a one each only through the magnetic cylinder 2 facing wall 6b of the film tube 6 reaching transverse / longitudinal perforation 10a made for a pull-tab. In contrast, with the second cutting lines 5b one each through both walls 6b . 6c of the film tube 6 reaching transverse perforations 10b over the entire width of the film tube 6 generated. The height Ha of the first cutting lines 5a in this case is less than the height Hb of the second cutting lines 5b ,

However, it is also possible with cutting lines 5a suitable height Ha through both walls 6b . 6c of the film tube 6 reaching transverse / longitudinal perforation 10a for tear tabs or the like.

The transverse perforations 10b serve the segmentation of the film tube 6 in still hanging label sleeves, for example, by means of suitable longitudinal voltage downstream of the perforating 1 from the film tube 6 can be torn off one after the other to label containers or the like.

The transverse perforations 10b are preferably designed so that they at a lower longitudinal tension in the film tube 6 tear apart than the transverse / longitudinal perforations 10a for the tear tabs. The latter should only be used during the intended use of the finished labeled product, but not during the separation of the film tube 6 to labels, tear open.

Depending on the label length to be set, the rotational speed UGa, UGb of the cutting lines 5a, 5b can be flexibly adjusted by changing the rotational speed DG outside the effective region 9. For this purpose, in the controller 8th corresponding periodic rotational speed profiles for the magnetic cylinder 2 be filed. These can then be retrieved format-dependent for individual label types to be produced.

The 3 schematically shows a possible arrangement of the first and second cutting lines 5a, 5b in the associated areas 4a . 4b of the punching sheet 4 in plan view of the flat developed punching plate 4 ,

The 3 also clarifies the positional adjustment of the transverse / longitudinal perforations 10a to each other and the transverse perforations 10b to each other by varying the rotational speed DG. Accordingly, the distances are different 12b between the transverse perforations 10b specifically from the distances 11b between the cutting lines 5b from. In the example, this will be the transverse / longitudinal perforations 10a and the transverse perforations 10b in pairs punched with the first rotational speed DG1 and the magnetic cylinder 2 temporarily decelerated therebetween to the second rotational speed DG. Of the distance 12b This corresponds to a label length after singulation along the transverse perforations 10b ,

The 4 schematically illustrates another possible arrangement of first cutting lines 51a . 52a as well as second cutting lines 51b in associated first areas 41a and second portions 41b of a flexible blank 41 in the flat unwound state.

The first cutting lines 51a . 52a are preferably for a perforation through both walls 6b . 6c of the film tube 6 educated. The first cutting lines 51a . 52a a certain punching sheet 41 can be designed for different widths and / or long punched out. This is in the 4 indicated schematically. In principle, it is also possible, the first cutting lines 51a . 52a form with different height Ha or with different total thickness of the punching plate 41 ,

Thus, in the example oblique transverse / longitudinal perforation 101 for a tear tab and an orthogonal aligned in the example transverse / longitudinal perforation 102 be generated for a tear line. The tear line is designed to tear open the finished labeled product substantially in the transverse direction Q. The tear line differs from the tear perforation, ie the transverse perforation 101b , Essentially in that it is used for successive tearing along the transverse / longitudinal perforation 102 is trained. For example, tear lines could also be skewed.

The second cutting lines 51b of the punching sheet 41 are also for a perforation through both walls 6b . 6c of the film tube 6 and thus for the production of transverse perforations 101b educated. These serve as Abreißperforationen for the separation of the film tube 6 to labels.

The cutting lines 51b . 51a and 52a are configured so that the tear-off perforations produced at a lower longitudinal tension in the film tube 6 tear as the generated tear lines and / or tear tabs, so that the tearing lines and / or tear tabs remain intact during the singulation.

As the 4 can be seen schematically, are the first cutting lines 51a . 52a and the second cutting lines 51b designed so that the laterally limiting folding edges 6d the film tube 6 are not perforated outside. Nevertheless, the transverse perforations 101b extend functionally across the entire width of the film tube 6 , This allows for a proper separation and prevents the other damage to the film tube 6 and / or problems in conveying the perforated film tube 6 in the area of folding edges 6d ,

The 4 clarifies the positional adjustment of the transverse / longitudinal perforations 101 . 102 and the transverse perforations 101b by varying the rotational speed DG in analogy to 3 , Accordingly, the distance becomes 121b between the transverse perforations 101b adjusted by periodic adjustment of the rotational speed DG. The distance 121b also corresponds to a label length after singulation along the transverse perforations 101b ,

The distance 122b between the transverse perforations 101b and the adjacent lateral / longitudinal perforation 102a, on the other hand, are constant because they are connected by the oblique transverse / longitudinal perforation 101a and together at the first rotational speed DG1 corresponding to the transportation speed 6a of the film tube 6 be punched.

For producing different labels and / or for processing foil tubes 6 different thickness and / or different materials different stampings 4, 41 can be provided. The stamping sheets 4 . 41 can with regard to the course of the first cutting lines 5a . 51a . 52a and the second cutting lines 5b . 51b and / or with regard to the height of individual cutting lines 5a . 51a . 52a . 5b . 51b and / or in terms of the number of similar cutting lines 5a . 51a . 52a . 5b . 51b per stamping sheet 4 . 41 and / or with regard to the thickness of the stamping sheet 4 . 41 differ.

Different punching plates 4 . 41 can be provided comparatively inexpensively as clothing parts. The attachment to the magnetic cylinder 2 is relatively easy and precise with a low expenditure on equipment possible. For this purpose, a plurality of known magnetic zones (not shown) are present on the magnetic cylinder 2, which are the punching plates 4 . 41 each with respect to the magnetic cylinder 2 hold it in a non-rotatable manner and take it with friction while working.

With the perforator 1 For example, you can work as follows.

One along folding edges 6d folded film tube 6 is preferably of a role endless at a constant transport speed 6a the perforator 1 fed.

The magnetic cylinder 2 is by means of motor 7 and control 8th driven so that the existing on the punching plate 4, 41 cutting lines 5a . 51a . 52a . 5b . 51b on contact with the film tube 6 (in the effective range 9 ) each have a peripheral speed UGa, UGb have essentially the transport speed 6a of the film tube 6 equivalent. The cutting lines 5a, 51a, 52a, 5b, 51b then run with the film tube 6 With.

Depending on the height of the cutting lines 5a . 51a . 52a . 5b . 51b above the stamping sheet 4 . 41 are targeted cross / longitudinal perforations 10a . 101 . 102 generated, which only by a facing wall 6b or through both superimposed walls 6b . 6c of the film tube 6 extend and / or transverse perforations 10b . 101b extending through both superimposed walls 6b . 6c of the film tube 6 and thereby functionally, in particular over the entire width of the film tube 6 extend. Here are the folding edges 6d of the film tube 6 recessed by perforation holes or punched out.

The perforation holes or similar punched holes produced may be punctiform, slot-shaped or the like, depending on the shape of the individual cutting edges of the cutting lines 5a . 51a . 52a . 5b . 51b ,

During continuous further rotation of the magnetic cylinder 2 can its rotational speed DG when not acting on the cutting lines 5a . 51a . 52a . 5b . 51b targeted to the film tube 6 and / or changed to the distances 11b . 121b especially between the transverse perforations 10b . 101b in the longitudinal direction of the film tube 6 adjust.

This is done by the controller 8th a speed profile which repeats periodically between rotational speeds DG1 and DG2. Preferably, different speed profiles can be called up in the controller for different film formats and label formats 8th saved.

Depending on the thickness and / or material of the film tube 6 can flexible stamping sheets 4 . 41 with different thickness on the magnetic cylinder 2 be attached. For the production of different transverse / longitudinal perforations 10a . 101 . 102 and transverse perforations 10b . 101b can the stamping sheets 4 . 41 be replaced. For this only relatively short set-up times are required.

The perforator 1 is therefore suitable for frequent format changes. In addition, a comparatively high machine performance is possible with permanently continuous belt transport of the film tube 6.

The transverse / longitudinal perforations 10a . 101 . 102 and the transverse perforations 10b . 101b are preferably together on one and the same magnetic cylinder 2 generated, but optionally also consecutively on different magnetic cylinders 2 , The perforator 1 can then, for example, another pair of magnetic cylinder 2 and impression cylinder 3 with associated engine 7 include.

The perforated film tube as described above 6 can then be supplied in a known per se a labeling (not shown), the film tube 6 by tearing off the transverse perforations 10b . 101b isolated to label sleeves and attached to (not shown) containers.

The film tube 6 For example, it may be a shrink tube or an elastically stretchable tube that is attached to containers by means of elastic tension.

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• DE 102004032030 A1 [0003]
• DE 102010026607 A1 [0003]
• US 2007101844 A1 [0003]
• DE 102011076863 A1 [0004]
• DE 102014216191 A1 [0004]
• DE 102015204821 A1 [0004]

Claims (15)

Perforating unit (1) for a longitudinally folded film tube (6), with a continuously rotatable magnetic cylinder (2) and impression cylinder (3) and with a magnetically attached to the magnetic cylinder flexible punching plate (4, 41) with cutting lines (5a, 51a, 52a, 5b , 51b) for perforating the film tube (6), characterized by a control (8) for the magnetic cylinder (2), with which the peripheral speed (UGa, UGb) of the cutting lines (5a, 51a, 52a, 5b, 51b) in the effective range ( 9) with the impression cylinder (3) adapted to a transport speed (6a) of the film tube (6) and outside of the effective range (9) can be changed in contrast. Perforator after Claim 1 , wherein the controller (8) is adapted to adjust the peripheral speed (UGa, UGb) outside the effective range (9) in dependence on a label length to be produced. Perforator after Claim 1 or 2 wherein the cutting lines (5a, 51a, 52a) in at least a first region (4a, 41a) of the punching plate (4, 41) in the transverse direction (Q) and / or longitudinal direction (L) and in particular have such a height (Ha) in that they only perforate the wall (6b) of the film tube (6) facing the stamped sheet (4, 41). Perforating mechanism according to one of the preceding claims, wherein the cutting lines (5b, 51b) in at least a second region (4b, 41b) of the punching plate (4, 41) only in the transverse direction (Q) and in particular have such a height (Hb), that they perforate both superimposed walls (6b, 6c) of the film tube (6) functionally over its entire width, with the fold-out of the film tube (6) of laterally delimiting folding edges (6d). Perforating mechanism according to one of the preceding claims, further comprising flexible punching plates (4, 41) with different cutting lines (5a, 51a, 52a, 5b, 51b), which alternatively attach magnetically to the magnetic cylinder (2) for producing different perforation patterns in the film tube (6) to let. Perforating mechanism according to one of the preceding claims, further comprising flexible stamping plates (4, 41) of different thickness, which can alternatively be magnetically attached to the magnetic cylinder (2) for perforation of film tubes (6) of different thickness and / or different material. A method for perforating a flat-folded film tube (6), wherein the film tube (6) with a particular constant transport speed (6a) between at least one impression cylinder (3) and a magnetic cylinder (2) with magnetically attached stamping sheet (4, 41) passes therethrough and thereby being perforated by cutting lines (5a, 51a, 52a, 5b, 51b) formed on the stamping sheet (4), characterized in that the peripheral speed (UGa, UGb) of the cutting lines (5a, 51a, 52a, 5b, 51b) in Effective range (9) with the impression cylinder (3) adapted to the transport speed (6a) of the film tube (6) and outside the effective range (9) is changed in contrast. Method according to Claim 7 in that the rotational speed (DG) of the magnetic cylinder (2) is periodically between a first rotational speed (DG1) for contact of the cutting lines (5a, 51a, 52a, 5b, 51b) with the film tube (6) and at least one second rotational speed (DG2) for Non-contact is changed. Method according to Claim 7 or 8th in which combined transverse / longitudinal perforations (10a, 101a, 102a) are selectively arranged in the wall (6b) of the film tube (6) facing the magnetic cylinder (2) and / or in two superimposed walls (6b, 6c) of the film tube (6). are produced, in particular for the formation of tear tabs and / or tear lines. Method according to one of Claims 7 to 9 , wherein functionally over the entire width of the film tube (6) reaching transverse perforations (10b) in two superimposed walls (6b, 6c) of the film tube (6) with the recess laterally limiting folding edges (6d) are produced. Method according to Claim 9 and 10 , wherein the transverse perforations (10b, 101b) withstand a lower longitudinal tension in the film tube (6) than the transverse / longitudinal perforations (10a, 101a, 102a). Method according to Claim 9 and 10 in which the transverse perforations (10b, 101b) and the transverse / longitudinal perforations (10a, 101a, 102a) are produced with the same stamped sheet (4, 41). Method according to one of Claims 9 to 12 , wherein the peripheral speed (UGa, UGb) outside the effective range (8) for positional adjustment of the transverse perforations (10b, 101b) and / or transverse / longitudinal perforations (10a, 101a, 102a) in the longitudinal direction of the film tube (6) is deliberately reduced or increased , Method according to one of Claims 7 to 13 wherein the film tube (6) is a shrink tube or an elastic tube for labeling containers in a bottling plant. Method according to one of Claims 7 to 14 wherein the punching plate (4, 41) for the production of differently perforated label sleeves and / or for perforation of different film tubes (6) is replaced.

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