DE102006038973A1 - Paper gluing during strand production - Google Patents

Abstract

An improved method for wrapping tobacco and/or filters in the manufacture of cigarettes has at least two applicator heads to apply parallel stripes of adhesive to one edge of the paper. Cold adhesive is used for one stripe and hot adhesive for another stripe. Each applicator head is independently adjustable to best suit particular items being wrapped. The spacing of the applicator jets is less than 1 cm. A cooling plate is positioned behind the hot adhesive station.

Description

The The invention relates to a device for producing a strand the tobacco processing industry from fibers of finite length, in particular one Filter or tobacco rod, with a format device by means of the wrapping material strip around the fibers are bent, and a gluing device for application a gluing on the wrapping material strip. Furthermore, the invention relates to the use of a gluing device in such a device for producing a strand and a Method for producing a strand of tobacco-processing Industry of fibers of finite length, in particular a filter or Tobacco rod.

Of the Term fibers of finite length in the context of the invention, in particular fibers with a length which shorter is as the length the stranded article of the tobacco processing industry.

at The fiber filter production from fibers of finite length are the filter rods, the from a glued wrapping material strip are surrounded, for curing or gluing heated together. At the for the curing required warming the temperature is in the range of liquefaction of hot glue, the means that a seam bonding of the wrapping material strip with hot glue at such filter rods while the curing the filter rods would give in and the filter rods thus damaged would. For this reason, it is common for the seaming of the wrapping material strip the filter rods Use cold glue. The cold glue is used directly after strand sealing Help from so-called Nahtplätten hardened. At the for the curing through the seam plates on the adhesive seam of the wrapping material strip applied heat penetrates part of it inevitably the filter strand and leaves there a little hardened Track. This has a negative effect on the subsequent curing of the filter rod out because the filter rod during the for the curing required heat treatment disfiguration. He then takes on a so-called banana shape. Furthermore is for the heat transfer through the seam plates on the bond line during the curing a pressure on the seam is necessary. This will cause the cylindrical Shape of the filter rod negatively affected because it is literally "ironed flat" in the seam area.

Under hot glue is a more or less solid adhesive at room temperature understand that in the hot Condition on an adhesive surface is applied and when cooling makes the connection. Cold glue is cold processable aqueous solutions of a Adhesive, which cures in particular by drying and produces a glue.

Out DE-A-24 52 749 a device for producing a filter strand of filter rods of different components is known in which the relative movement between the deposited on a wrapping paper strip filter rods and the wrapping paper strip is prevented. This happens because the wrapping paper strips are assigned a first and a second gluing device for applying an internal gluing and a seam gluing. The internal gluing is, for example, cold glue, and the seam gluing is, for example, a hot melt glue. A heating device is provided in order to simultaneously effect the setting of the cold glue for the internal gluing and the activation of the hot melt glue for the seam gluing in a single operation.

In DE-A-44 21 124 there is described an adhesive device for a cigarette making machine in which adhesive is applied to a wrapping web for the cigarettes, with two nozzles being provided, each of which is in abutment with and away from the wrapping web. In this way, it is possible to control the position of the nozzles so that at one time a nozzle is in contact with the wrapping web and the other nozzle is in a retracted position for cleaning purposes. Subsequently, it is possible to bring the cleaned nozzle into contact with the wrapping web and to move the previously active nozzle to a retracted position for cleaning.

task The present invention is for the production of a strand for articles the tobacco processing industry from fibers of finite length one Glueing for a wrapping material strip of the To provide the strand, - the a stable enclosure of the strand through the wrapping material strip guaranteed and above In addition, high quality products guaranteed.

The object is achieved by a device for producing a strand of the tobacco processing industry from fibers of finite length, in particular a filter or tobacco rod, which comprises a format device, by means of which the wrapping material strip is bent around the fibers, and a gluing device for applying a gluing on the wrapping material strip and characterized in that the gluing device comprises a first gluing device applying a first glue line to the wrapping material strip and a second gluing device applying a second glue line to the wrapping material strip. It is possible that the gluing direction comprises more than two gluing devices, which in turn can each apply more than one glue trace on the wrapping material strip.

In an advantageous embodiment the device is provided that the first and the second gluing device are arranged so that the first and the second glue track parallel to each other and in the vicinity an outer paper edge of the Wrapping material strip be applied.

Preferably are the gluing devices only on one, in particular pivotable, common fastening device attached. In the fastening device it may be a kind of base plate, which is pivotally mounted is. The fastening device has for this purpose a horizontal axis of rotation on. So that can Gluing devices or the gluing device and thus also for example glueing nozzles be folded away or pivoted upwards from the effective range. An advantage of this embodiment is that the setting or the relative position of the gluing devices or the glue outlet openings in the gluing devices can remain constant to one another, even if the glue is interrupted and also when it is swiveled the gluing devices and a pivoting back of the gluing devices, to apply glue again.

Preferably is the location of the first gluing device and the second gluing device, in particular the position of outlet openings of the gluing devices, adjustable to each other. As a result, the relative position of the gluing devices or the outlet openings the gluing devices to each other accurately and easily adjustable. Preferably, at least one gluing device is rotatably mounted, in particular, for easy adjustment of the position of the outlet opening of this Gluing device the outlet opening acentric to the axis of rotation the gluing device is arranged.

Around Preventing contamination on the glue marks is preferred the distance of the outlet openings in the conveying direction of the wrapping material strip smaller than 2 cm, especially smaller than 1 cm. The so provided, in particular horizontal, distance of the nozzles is therefore possible small to keep the open area of glue lines as small as possible, so that possible little contamination before closing the glue seams or the complete close of the wrapping material strip may occur.

Preferably the gluing devices are in the range of a format device arranged. The glue traces are thus preferably just before Shut down of the wrapping material strip or the complete wrap the fiber with the wrapping material strip applied or shortly before the complete bonding of the wrapping material strip. The preferred location is, as indicated, in the area of a format device, that is to say in particular between a suction-strand conveyor and an adhesive chamber, in which the glue tracks are closed. The glue chamber can be part of it be the format device.

In a preferred embodiment the device is the first gluing device for the order of cold glue and in another preferred embodiment the second gluing device is designed for the application of hot glue.

The two glue traces, i. the hot and the cold glue track, for example, become parallel near the outer edge, in particular paper edge, applied to the wrapping material strip.

In a further preferred embodiment is provided that - in conveying direction of the wrapping material strip considered - one cool bar is provided behind the second gluing device, so that a hot glue line harden and the resulting hot glue seam can be closed. One from the second gluing device Leaving cold glue line dries independently, while the wrapping material strips is promoted with the strand therein through the device.

On this way is now an advantage that the cold glue seam is cured, if a filter or tobacco rod then into a curing oven so that a rod of this strand or the strand in the in the curing oven conducted heat treatment not damaged becomes.

Prefers includes the device for producing a strand of tobacco Processing industry of fibers of finite length for conveying the fibers in the direction one wrapping material strip Suction rod.

The The object of the invention is further achieved by the use of a Gluing device with a first gluing device, the emits a first glue line, and with a second gluing device, which emits a second glue trace, for applying the first and second Glue trace on a serving strip of material a strand of the tobacco processing industry of fibers of finite length, in particular a filter or tobacco rod, in a device for manufacturing of the strand.

• – ein Umhüllungsmaterialstreifen wird mittels einer Formatvorrichtung um die Fasern gebogen,
• – eine erste Leimspur wird mittels einer ersten Beleimungsvorrichtung auf den Umhüllungsmaterialstreifen aufgebracht,
• – eine zweite Leimspur wird mittels einer zweiten Beleimungsvorrichtung auf den Umhüllungsmaterialstreifen aufgebracht.

Furthermore, according to the invention, the object is achieved by a method for producing a strand of the tobacco-processing industry from fibers of finite length, in particular a filter or tobacco rod, the method comprising the following steps:

• A wrapping material strip is bent around the fibers by means of a formatting device,
• A first glue lane is applied to the wrapping material strip by means of a first glueing device,
• - A second glue trace is applied by means of a second gluing device on the wrapping material strip.

In a preferred embodiment of the method is provided that the first and the second glue trace parallel to each other and near an outer edge of the paper of the wrapping material strip be applied.

Preferably the glue traces are applied just before closing the wrapping material strip, to avoid contamination of the glue marks. contamination the glue traces are also avoided by the fact that preferably first Leimspur is applied, which is arranged close to the fibers and subsequently a glue line is applied, which is located away from the fibers is. The glue track disposed away from the fibers is then closer to the at the time of applying the glue line still open edge of the Wrapping material strip and the glue track located close to the fibers is farther away this edge compared to the other glue trace.

Corresponding is also in the inventive method advantageous that the first glue trace a cold glue track and the second Leimspur a hot glue trace is.

In a preferred embodiment of the process becomes the wrapping material strip provided with the glue traces glued in a further step.

In a further preferred embodiment of the method, the strand provided with the bonded wrapping material strip is hardened in a subsequent step by the action of heat. In this case, connections between the fibers can be produced by melting and adhering to binding fibers with further binding fibers or with filling fibers or by providing binding granules which allow a combination of fibers. It is fully on the DE 102 17 410 A1 and DE 10 2005 009 608.5 directed. The binder fibers may in this case be bicomponent, multicomponent and / or monocomponent fibers. The action of heat leads to a softening of the surface of the binding fibers, which makes it possible for other components, such as filler fibers, granules, etc., to adhere to the binding fibers and, after cooling, to form a firm bond of the fibers or components. The curing step is preferably carried out in a filter strand.

Prefers after application of the cold glue track, an adhesive seam on the wrapping material strip generated by the fact that the cold glue track dries.

Preferably In this case, after application of the cold glue track, an adhesive seam of the wrapping material strip before a subsequent one Step of curing of the bonded wrapping material strip provided strand produced by drying.

In a further preferred embodiment the method according to the invention it is envisaged that after application of the hot glue track therefrom an adhesive seam on the wrapping material strip is generated, wherein the hot glue line is guided over a cooling web.

The Task is about it also solved by a strand of the tobacco processing industry made of fibers more finite Length, in particular a filter or tobacco rod, with a wrapping material strip, characterized in that the wrapping material strips a having first and a second bond line.

In an advantageous embodiment of the strand is provided that the first and the second adhesive seam parallel to each other and in the vicinity an outer edge of the paper of the wrapping material strip run.

Especially is the first bond preferably as a cold glue and the second glue seam as a hot glue glue seam educated.

Around will be able to place the two glue tracks next to each other preferably an overlap area of the wrapping material strip of at least 2 mm, in particular about 3 mm, provided. It is preferably provided that a wrapping material strip at Application of two glue traces, as provided by the invention, in Contrary to conventional Application of a glue trace an additional width of particular preferably about 0.5 mm.

In a further preferred embodiment of the strand is provided that the Kaltleimklebnaht the outer paper edge of the envelope facing the material strip and the Heißleimklebnaht facing away from the outer edge of the paper wrapping material strip. In this way it is ensured that the double seam does not open during the curing process in the edge region of the wrapping material strip, as it is held in the vicinity of the outer paper edge of the wrapping material strip in any case by the cold glue seam.

The outer edge of the paper is the longitudinal axial to the strand running paper edge of the wrapping material strip, the from the outside is visible.

The Invention will be described below without limiting the general inventive concept of exemplary embodiments described with reference to the drawings. Regarding all in the Text not closer explained Details of the invention becomes explicit referred to the drawings. Show it:

1 a schematic representation of a device for producing a cigarette rod,

2 a schematic representation of a longitudinal section through a part of a gluing device,

3 a schematic perspective view of a gluing device without housing in the gluing of a wrapping material strip.

In The following figures are each the same or similar elements or corresponding parts provided with the same reference numerals, so that a corresponding renewed idea is ignored.

In 1 is the construction of a device for producing a cigarette rod 28 shown schematically. At the facility is by a lock 1 a pre-distributor 2 Portioned in portions with tobacco. A removal roller 3 of the pre-distributor 2 supplements a storage container 4 with tobacco, from which a steep conveyor 5 Takes out tobacco and a stowage 6 fed.

Out of the stowage 6 takes a pin roller 7 a uniform stream of tobacco coming from a knockout roll 8th from the pins of the pin roller 7 knocked out and on a circulating at a constant speed stray cloth 9 is thrown. One on the jar 9 formed tobacco fleece is in a viewing device 11 Thrown, which consists essentially of an air curtain, the larger or heavier tobacco particles happen, while all other tobacco particles from the air in one of a pin roller 12 and a wall 13 formed funnel 14 be steered.

From the pin roller 12 The tobacco is in a tobacco channel 16 against a rope conveyor 17 hurled at which the tobacco by means of a vacuum chamber 18 kept sucked air and a in the 1 unimaged tobacco rod 59 is woken up. A leveling agent 19 removes excess tobacco from the tobacco rod 59 Then, on a concurrently wrapped wrapping strip 21 is placed.

The wrapping material strip 21 is from a reel 22 deducted, by a printing unit 23 guided and on a driven format tape 24 placed.

The format tape 24 transports the tobacco rod 59 and the wrapping material strip 21 through a format device 26 in which the wrapping material strip 21 around the tobacco rod 59 folded or bent, so that one more in the 1 not shown paper edge 56 protrudes, by means of a gluing device 60 whose outer casing is in the 1 is shown is glued. Thereupon the glued adhesive seams of the wrapping material strip become 21 closed. This is an adhesive chamber 20 provided in the format device 26 can be integrated.

An educated cigarette rod 28 goes through a strand density meter 29 that the equalizer 19 controls, and is from a knife apparatus 31 in double-length cigarettes 32 cut. The double-length cigarettes 32 be from a controlled arms 33 having transfer device 34 a takeover drum 36 passed a filter attachment, on the cutting drum 38 they are shared with a circular knife in single cigarettes.

Instead of the cigarette rod 28 can also be made according to a filter strand. This is in particular on the EP 1 464 239 A1 referenced, in which the production of a fiber filter strand is described.

2 schematically shows a gluing device according to the invention, wherein in longitudinal section by way of example a first gluing device 51 for gluing a paper edge 56 a wrapping material strip 21 holding a tobacco rod 59 wrapped, is shown and also a second gluing device 72 , Alternatively, a filter strand can be wrapped. In the case of a filter strand, this may include, in addition to the fibers of finite length, a binder which is activated by heat, thereby bonding the fibers together. For this purpose, the fil initially subjected to a curing step after gluing. The binder may comprise binder fibers and / or binder granules.

The first gluing device 51 is located in the housing of the gluing device 60 that in the 2 not shown.

The wrapping material strip 21 is guided in the plane perpendicular to the plane of the drawing and by means of suitable moldings, the 2 not shown, and suitable cover strips 57 formed to a round cross-section. Simultaneously with the round shaping of the wrapping material strip 21 becomes a tobacco rod 59 wrapped. The other, not glued paper edge 80 of the wrapping material strip 21 located at the top of the under the first gluing device 51 arranged cover strip 57 ,

The first gluing device 51 is with her first nozzle tip 54 arranged so that these down from the gluing device 60 protrudes. Accordingly, the second gluing device 71 arranged. This is, however, in 2 slightly above the gluing device 51 arranged and perpendicular to the plane of the 2 behind the gluing device 51 ,

For applying a glue trace through the first gluing device 51 is a first nozzle body 52 provided in which a glue 53 in the conveying direction F to the first nozzle tip 54 is encouraged. The first nozzle tip 54 is narrowed with respect to the conveying direction F at its head.

In the area of the first outlet opening 55 is the edge area 58 of the wrapping material strip 21 at the first nozzle tip 54 , in particular in the region of the first outlet opening 55 , on, leaving the edge area 58 with the leaking glue 53 is provided. The first gluing device 51 is in the gusset of the almost closed seam overlap of the transported perpendicular to the plane wrapping material strip 21 for the tobacco rod 59 arranged.

Accordingly lies in the region of the second outlet opening 75 the border area 58 of the wrapping material strip 51 at the second nozzle tip 74 , In particular in the region of the second outlet opening 75 becomes the border area 58 with the from the second outlet opening 75 leaking glue, which is not shown provided. The second gluing device 71 including the second nozzle body 72 , the second nozzle tip 74 and the second exit port 75 is perpendicular to the plane of the 2 behind the first gluing device 51 , the first nozzle body 52 , the first nozzle tip 54 and the first exit opening 55 arranged. Furthermore, these objects, the device for the second gluing 71 belong, above the features to the first gluing device 51 belong. The paper edge 56 points in 2 up and is the paper edge, which is the edge area 58 assigned. In the context of the invention, the term "edge region" is to be understood as meaning, in particular, a region of a wrapping material strip which has not yet been used for wrapping or which is still freely accessible or protruding when wrapping the wrapping material strip around a strand or material to be enveloped.

In the 3 is a schematic perspective view of a gluing device 60 with covered housing during the gluing of a wrapping material strip 21 shown. The gluing device 60 comprises a first gluing device 51 with a first nozzle body 52 holding a first nozzle tip 54 and at its end a first outlet opening 55 having. Furthermore, the gluing device comprises 60 a second gluing device 71 with a second nozzle body 72 , the second nozzle tip 74 with a second exit opening 75 having.

From the first outlet 55 the first gluing device 51 cold glue, which flows in the 3 not shown. Accordingly flows from the second outlet opening 75 the second gluing device 71 Hot glue, in the 3 also not shown. For a better understanding, the two nozzle tips 54 . 74 presented in full, although through the wrapping material strip 21 actually need to be covered. The wrapping material strip 21 has a paper edge 56 on top of the wrapped tobacco rod 59 points away. The through the first gluing device 51 Applied cold glue emerges from the first outlet 55 and forms a glue line, the edge of the paper 56 of the wrapping material strip 21 is facing. The from the second outlet opening 75 the second gluing device 71 Emerging hot glue forms a glue trace, which is opposite to the glue trace of the cold glue on the edge of the paper 56 of the wrapping material strip 21 opposite side runs.

The first gluing device 51 and the second gluing device 71 are on a jig 92 appropriate. The second gluing device 71 is here by fasteners 93 . 93 ' firmly with the tensioning device 92 connected, which is preferably a detachable connection. The relative adjustment of the first gluing device 51 to the second gluing device 71 can happen over that the first gluing device 51 in particular in the tensioning device 92 resulting holding hole is rotatably mounted. This is done by means of a clamping screw 90 , in cooperation with the slot 91 fixing and releasing the rotational release of the first gluing device 51 allows.

With a corresponding release of the clamping screw 90 So can the first gluing device 51 be rotated about an axis of rotation, so that the eccentric or parallel to the axis of rotation offset first nozzle body 52 can be pivoted on a circular path, wherein on the one hand the vertical and the horizontal distance of the first outlet opening 55 to the second outlet opening 75 can be adjusted. After appropriate adjustment of the distance of the first outlet opening 55 to the second outlet opening 75 becomes the tension screw 90 tightened, so that a misalignment can be prevented.

It is then possible, the first and the second gluing device 51 respectively. 71 together or together from an in 3 wegzuschwenken shown Beleimungsposition, for example, to perform maintenance. In this case, the relative position of the nozzles to each other is not changed.

With 95 is still a glue supply for cold glue provided, the first gluing device 51 is assigned and through the first nozzle body, the first nozzle tip 54 and the first exit opening 55 can occur. In the second gluing device 71 is a heater 96 provided, which provides a temperature, for example in the range of 150 ° C, so that the hot melt is heated accordingly. To prevent the first gluing device 51 is heated, is also an insulating device 94 provided between the tensioning device 92 and the heater 96 is arranged.

1

lock

2

preliminary distributor

3

out roller

4

reservoir

5

vertical conveyor

6

accumulating shaft

7

pin roll

8th

picker roller

9

stray cloth

11

OverviewAmenitiesPicture

12

pin roll

13

wall

14

funnel

16

tobacco channel

17

line conveyor

18

Vacuum chamber

19

Egalisator

20

Klebkammer

21

Wrapping material strip

22

reel

23

printing unit

24

format tape

26

format device

28

cigarette rod

29

Strand density meter

31

knife apparatus

32

double-length cigarettes

33

poor

34

Transfer device

36

transfer drum

38

cutting drum

51

first gluing

52

first nozzle body

53

glue

54

first nozzle tip

55

first outlet opening

56

paper edge

57

cover strip

58

border area

59

tobacco rod

60

gluing device

F

conveying direction

71

second gluing

72

second nozzle body

74

second nozzle tip

75

second outlet opening

80

Not glued paper edge

90

clamping screw

91

slot

92

jig

93.93 '

connecting element

94

insulating

95

glue supply

96

heater

Claims (27)

Device for producing a strand ( 59 ) the tobacco processing industry from fibers of finite length, in particular a filter or tobacco rod, with a format device ( 26 ), by means of which a wrapping material strip ( 21 ) is bent around the fibers, and a gluing device ( 60 ) for applying a gluing on the wrapping material strip ( 21 ), characterized in that the gluing device ( 60 ) a first gluing device ( 51 ), which apply a first glue trace to the wrapping material strip ( 21 ), and a second gluing device ( 71 ), which apply a second glue trace to the wrapping material strip ( 21 ) includes. Device according to claim 1, characterized in that the first and the second gluing device ( 51 . 71 ) are arranged so that the first and the second glue track par allel to each other and in the vicinity of an outer edge ( 56 ) of the wrapping material strip ( 21 ) are applied. Device according to claim 1 or 2, characterized in that the gluing devices ( 51 . 71 ) on a, in particular pivotable, common fastening device ( 92 ) are mounted. Device according to one of claims 1 to 3, characterized in that the position of the first gluing device ( 51 ) and the second gluing device ( 71 ), in particular the position of outlet openings ( 55 . 75 ) of the gluing devices ( 51 . 71 ), is adjustable to each other. Device according to claim 4, characterized in that the distance of the outlet openings ( 55 . 75 ) in the conveying direction of the wrapping material strip is smaller than 2 cm, in particular smaller than 1 cm. Device according to one of claims 1 to 5, characterized in that the gluing devices ( 51 . 71 ) in the area of a format device ( 26 ) are arranged. Device according to one of claims 1 to 6, characterized in that the first gluing device ( 51 ) is designed for the application of cold glue. Device according to one of claims 1 to 7, characterized in that the second gluing device ( 71 ) is designed for the application of hot glue. Device according to one of claims 1 to 8, characterized in that, in the conveying direction of the wrapping material strip ( 12 ), a cooling web behind the second gluing device ( 71 ) is provided. Device according to one of claims 1 to 9, characterized in that a device ( 17 ) for conveying the fibers in the direction of the wrapping material strip ( 21 ) is designed as Saugstrangförderer. Use of a gluing device ( 60 ) with a first gluing device ( 51 ), which emits a first glue trace, and with a second glueing device ( 71 ), which emits a second glue trace, for applying the first and second glue tracks to a wrapping material strip ( 21 ) of a strand ( 59 ) of the tobacco industry of fibers of finite length, in particular a filter or tobacco rod, in a device for the production of the strand ( 59 ). Method for producing a strand ( 59 ) of the tobacco industry of fibers of finite length, in particular a filter or tobacco rod, in several steps: - a wrapping material strip ( 21 ) is determined by means of a format device ( 26 ) is bent around the fibers, - a first glue trace is made by means of a first gluing device ( 51 ) on the wrapping material strip ( 21 ), - a second glue lane is applied by means of a second gluing device ( 71 ) on the wrapping material ( 21 ) applied. A method according to claim 12, characterized in that the first and second glue tracks are parallel to one another and in the vicinity of an outer edge of the paper ( 56 ) of the wrapping material strip ( 21 ) are applied. A method according to claim 12 or 13, characterized in that the glue traces just before the closing of the wrapping material strip ( 21 ) are applied. Method according to one of claims 12 to 14, characterized that first a glue line is applied, which is arranged close to the fibers is and then a glue trace is applied, the more distant from the fibers is. Method according to one of claims 12 to 15, characterized that the first glue trace is a cold glue trace. Method according to one of claims 12 to 16, characterized that the second glue trace is a hot glue trace. Method according to one of claims 12 to 17, characterized in that in a further step the wrapping material strip provided with the glue traces ( 21 ) is glued. Method according to one of claims 12 to 18, characterized in that in a subsequent step, with the bonded wrapping material strip ( 21 ) provide a strand ( 59 ) is cured by the action of heat. Method according to one of claims 12 to 19, characterized in that after application of the cold glue track therefrom an adhesive seam of the wrapping material strip ( 21 ) is produced by drying. A method according to claim 19 and 20, characterized in that the adhesive seam before the subsequent step of curing of the glued Umsüllungsmaterialstreifen ( 21 ) provided strand is produced by drying. Method according to one of claims 17 to 21, characterized in that after application of the hot glue track therefrom an adhesive seam of the wrapping material strip ( 21 ) is produced, wherein the hot glue line is passed under a cooling bar. Strand ( 59 ) of the tobacco industry of fibers of finite length, in particular a filter or tobacco rod, with a wrapping material strip ( 21 ), characterized in that the wrapping material strip ( 21 ) has a first and a second adhesive seam. Strand ( 59 ) according to claim 23, characterized in that the first and the second adhesive seam are parallel to one another and in the vicinity of an outer paper edge ( 56 ) of the wrapping material strip ( 21 ). Strand ( 59 ) according to claim 23 or 24, characterized in that the first adhesive seam is a Kaltleimklebnaht and / or the second adhesive seam is a Heißleimklebnaht. Strand ( 59 ) according to any one of claims 23 to 25, characterized in that the cold glue adhesive seam of the outer paper edge ( 56 ) of the wrapping material strip ( 21 ) and the Heißleimklebnaht the paper edge ( 56 ) of the wrapping material strip ( 21 ) runs away. Strand ( 59 ) according to one of claims 23 to 26, characterized in that the overlapping area of the wrapping material strip ( 21 ), in which the two adhesive seams extend, is at least 2 mm, in particular approximately 3 mm, wide.