EP1891865A1 - Paper gumming during rod 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 invention relates to a device for producing a strand of the tobacco processing industry from fibers of finite length, in particular a filter or tobacco rod, with 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. 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 the tobacco processing industry from fibers of finite length, in particular a filter or tobacco rod.

In the context of the invention, the term "fibers of finite length" means in particular fibers having a length which is shorter than the length of the articles of the tobacco-processing industry made of the strand.

In the fiber filter production of fibers of finite length, the filter rods, which are surrounded by a bonded envelope strip of material, heated to harden or gluing together. In the curing required for curing, the temperature is in the range of liquefaction of hot glue, which means that a seam bonding of the wrapping material strip with hot glue would give in such filter rods during the curing of the filter rods and the filter rods would thus be damaged. For this reason, it is common to use cold glue for the seam bonding of the wrapping material strip of the filter bars. The cold glue is cured directly after the strand closing with the help of so-called Nahtplätten. In the heat applied to the bond line of the wrapping material strip for curing by the suture flaps, a part of it inevitably penetrates into the filter strand, leaving a small hardened trace there. This adversely affects the subsequent curing of the filter rod, as the filter rod warps during the heat treatment required for curing. He then takes on a so-called banana shape. In addition, heat transfer through the suture flaps to the bond line during curing requires pressure on the bond line. As a result, the cylindrical shape of the filter rod is adversely affected because it is literally "ironed flat" in the seam area.

Hot glue is to be understood as meaning a more or less solid adhesive at room temperature which, when hot, is applied to an adhesive surface and establishes the connection upon cooling. Cold glue is cold processable aqueous solutions of an adhesive which hardens 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.

The object of the present invention is to provide for the production of a strand of articles of the tobacco industry from fibers of finite length a gluing of a wrapping material strip of the strand, which ensures a stable enclosure of the strand by the wrapping material strips and 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 device comprises more than two gluing devices, which in turn can each apply more than one glue line to the wrapping material strip.

In an advantageous embodiment of the device it is provided that the first and the second gluing device are arranged such that the first and the second glue line are applied parallel to one another and in the vicinity of an outer paper edge of the wrapping material strip.

Preferably, the gluing devices are mounted only on one, in particular pivotable, common fastening device. In the fastening device may be a kind of base plate which is pivotally mounted. For this purpose, the fastening device has a horizontal axis of rotation. Thus, the gluing devices or the gluing device and thus also, for example, gluing nozzles can be folded away or pivoted upwardly out of the effective region become. 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 when the gluing is interrupted and also when the gluing devices are pivoted and the gluing devices are swung back Glue to apply.

The position of the first gluing device and the second gluing device, in particular the position of outlet openings of the gluing devices, can preferably be adjusted to one another. As a result, the relative position of the gluing devices or the outlet openings of the gluing devices relative to each other is precisely and easily adjustable. Preferably, at least one gluing device is rotatably mounted, wherein in particular for easy adjustment of the position of the outlet opening of this gluing device, the outlet opening is arranged acentrically to the axis of rotation of the gluing device.

In order to prevent contamination on the glue tracks, the distance of the outlet openings in the conveying direction of the wrapping material strip is preferably less than 2 cm, in particular less than 1 cm. The thus provided, in particular horizontal, distance of the nozzles is thus as small as possible to keep the open area of glue lines as small as possible, so that as little as possible contamination before closing the glue seams or the complete closing of Umhüllungsmaterialstreifens can occur.

Preferably, the gluing devices are arranged in the region of a format device. The glue tracks are thus preferably just before the closure of the wrapping material strip or the complete wrapping of 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, ie in particular between a suction strand conveyor and an adhesive chamber in which the glue tracks are closed. The adhesive chamber may be part of the format device.

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

The two glue traces, i. the hot and cold glue tracks are applied, for example, parallel in the vicinity of the outer edge, in particular paper edge, of the wrapping material strip.

In a further preferred embodiment it is provided that-viewed in the conveying direction of the wrapping material strip-a cooling web is provided behind the second glueing device, so that a hot-glue track can harden and the resulting hot-melt seam can be closed. An emerging from the second gluing device cold glue track dries independently, while the wrapping material strip is promoted with the strand therein through the device.

In this way, it now results as an advantage that the cold glue seam is cured when a filter or tobacco rod then passes into a curing oven, so that a rod of this strand or the strand is not damaged in the heat treatment carried out in the curing oven.

Preferably, the means for making a strand of the finite length fibers of the tobacco processing industry for conveying the fibers towards the wrapping material strip comprises a suction strand conveyor.

The object of the invention is further achieved by the use of a gluing device with a first gluing device which emits a first glue line, and with a second gluing device which emits a second glue line, for applying the first and second glue line to a wrapping material strip of a strand of the tobacco processing Industry of fibers of finite length, in particular a filter or tobacco rod, in a device for the production 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 to the wrapper strip by means of a second glueing device.

In a preferred embodiment of the method, it is provided that the first and second glue tracks are parallel to one another and in the vicinity of an outer paper edge 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. Contaminations of the glue traces are also avoided by preferably first applying a glue trace which is arranged close to the fibers and then a glue trace is applied which is arranged away from the fibers. The glue track disposed away from the fibers is then closer to the edge of the wrapping material strip still open at the time of applying the glue line, and the glue track located close to the fibers is farther from that edge than the other glue track.

Accordingly, it is also advantageous in the method according to the invention that the first glue lane is a cold-glue track and the second glue lane is a hot-glue track.

In a preferred embodiment of the method, the wrapping material strip provided with the glue traces is 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 be bicomponent, multicomponent and / or monocomponent fibers be. 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.

Preferably, after applying the cold glue track, an adhesive seam is produced on the wrapping material strip by drying the cold glue track.

Preferably, after application of the cold glue track, an adhesive seam of the wrapping material strip is produced by drying prior to a subsequent step of curing the strand provided with the bonded wrapping material strip.

In a further preferred embodiment of the method according to the invention, it is provided that, after application of the hot-glue track, an adhesive seam is produced therefrom on the wrapping material strip, the hot-glue track being guided over a cooling bar.

The object is also achieved by a strand of the tobacco processing industry of fibers of finite length, in particular a filter or tobacco rod, with a wrapping material strip, which is characterized in that the wrapping material strip has a first and a second adhesive seam.

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

In particular, the first adhesive seam is preferably in the form of a cold-glue adhesive seam and the second adhesive seam is in the form of a hot-melt adhesive seam.

In order to be able to place the two glue tracks next to one another, an overlapping area of the wrapping material strip of at least 2 mm, in particular approximately 3 mm, is preferably provided. It is preferably provided that a wrapping material strip when applying two glue tracks, as provided according to the invention, in contrast to the conventional application of a glue track has an additional width of in particular preferably about 0.5 mm.

In a further preferred embodiment of the strand, it is provided that the cold adhesive glue seam faces the outer paper edge of the wrapping material strip and the hot glue glue seam runs away from the outer paper edge of the 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 paper edge of the wrapping material strip which runs longitudinally to the strand and which is visible from the outside.

Fig. 1

eine schematische Darstellung einer Einrichtung zur Herstellung eines Zigarettenstrangs,

Fig. 2

eine schematische Darstellung eines Längsschnitts durch einen Teil einer Beleimungseinrichtung,

Fig. 3

eine schematische perspektivische Ansicht auf eine Beleimungseinrichtung ohne Gehäuse bei der Beleimung eines Umhüllungsmaterialstreifens.

The invention will be described below without limiting the general inventive idea by means of embodiments with reference to the drawings. With respect to all details of the invention not explained in detail, reference is expressly made to the drawings. Show it:

Fig. 1

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

Fig. 2

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

Fig. 3

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

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

In Fig. 1, the structure of a device for producing a cigarette rod 28 is shown schematically. In the device of a lock 1, a pre-distributor 2 is charged in portions with tobacco. A removal roller 3 of the pre-distributor 2 supplements a reservoir 4 with tobacco, from which a steep conveyor 5 takes tobacco and feeds a stowage 6.

From the storage shaft 6 takes a pin roller 7 a uniform stream of tobacco, which is knocked out by a rollover roller 8 of the pins of the pin roller 7 and thrown on a circulating at a constant speed spreading cloth 9. A tobacco fleece formed on the spreading cloth 9 is thrown into a sighting device 11, which consists essentially of an air curtain, the larger or heavier tobacco particles pass, while all other tobacco particles from the air in a funnel formed by a pin roller 12 and a wall 13 14th be steered.

From the pin roller 12, the tobacco is thrown into a tobacco channel 16 against a rope conveyor 17, on which the tobacco is held by means sucked into a vacuum chamber 18 air and a not shown in Fig. 1 tobacco rod 59 is aufgeschaltet. An equalizer 19 removes excess tobacco from the tobacco rod 59, which is then placed on a guided in unison wrapping material strip 21.

The wrapping material strip 21 is withdrawn from a reel 22, passed through a printing unit 23 and placed on a driven format tape 24.

The format strip 24 transports the tobacco rod 59 and the wrapping material strip 21 through a formatting device 26 in which the wrapping material strip 21 is folded or bent around the tobacco rod 59 so that a paper edge 56, not shown in FIG. 1, protrudes by means of a gluing device 60, whose outer housing is shown in Fig. 1, is glued. Then, the glue marks provided with adhesive seams of the wrapping material strip 21 are closed. For this purpose, an adhesive chamber 20 is provided, which can be integrated in the format device 26.

A thus formed cigarette rod 28 passes through a strand density meter 29, which controls the Egalizer 19, and is cut by a knife apparatus 31 in double-length cigarettes 32. The double-length cigarettes 32 are transferred from a controlled arms 33 having transfer device 34 of a transfer drum 36 of a filter attachment machine, on the cutting drum 38, they are divided with a circular blade in single cigarettes.

Instead of the cigarette rod 28 may also be prepared 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 a first gluing device 51 for gluing a paper edge 56 of a wrapping material strip 21 which encloses a tobacco rod 59 is shown in longitudinal section and also a second gluing device 72. Alternatively, a filter strand can also be enveloped. 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 filter strand is subjected to a curing step after the 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, which is not shown in FIG.

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

The first glueing device 51 is with its first nozzle tip 54 arranged so that it protrudes downward from the gluing device 60. Accordingly, the second gluing device 71 is arranged. However, this is arranged in Fig. 2 slightly above the gluing device 51 and perpendicular to the plane of Fig. 2 behind the gluing device 51st

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

In the region of the first outlet opening 55, the edge region 58 of the wrapping material strip 21 bears against the first nozzle tip 54, in particular in the region of the first outlet opening 55, so that the edge region 58 is provided with the exiting glue 53. The first gluing device 51 is arranged in the interstice of the almost closed seam overlap of the wrapping material strip 21 for the tobacco rod 59 transported perpendicular to the plane of the drawing.

Correspondingly, in the region of the second outlet opening 75, the edge region 58 of the wrapping material strip 51 lies against the second nozzle tip 74. In particular in the region of the second outlet opening 75, the edge region 58 is provided with the glue emerging from the second outlet opening 75, which is not shown. The second glueing device 71 including the second nozzle body 72, the second nozzle tip 74 and the second outlet opening 75 is arranged perpendicular to the drawing plane of FIG. 2 behind the first glueing device 51, the first nozzle body 52, the first nozzle tip 54 and the first outlet opening 55. Furthermore, these objects are the second gluing device 71, above the features associated with the first sizing device 51. The paper edge 56 points upward in FIG. 2 and is the paper edge associated with the edge region 58. 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.

FIG. 3 shows a schematic perspective view of a covered housing gluing device 60 during the gluing of a wrapping material strip 21. The gluing device 60 comprises a first gluing device 51 having a first nozzle body 52, which has a first nozzle tip 54 and at the end thereof a first outlet opening 55. Furthermore, the gluing device 60 comprises a second gluing device 71 with a second nozzle body 72, which has a second nozzle tip 74 with a second outlet opening 75.

Cold glue, which is not shown in FIG. 3, flows from the first outlet opening 55 of the first gluing device 51. Accordingly, hot glue, which is also not shown in FIG. 3, flows out of the second outlet opening 75 of the second glueing device 71. For a better understanding, the two nozzle tips 54, 74 are completely shown, although they would actually have to be covered by the wrapping material strip 21. The wrapping material strip 21 has a paper edge 56 facing away from the wrapped tobacco rod 59. The cold glue applied by the first glueing device 51 exits from the first outlet opening 55 and forms a glue trace, which faces the paper edge 56 of the wrapping material strip 21. Of the from the second. Outlet opening 75 of the second gluing device 71 exiting hot glue forms a glue trace, which runs opposite to the glue trace of the cold glue on the side facing away from the paper edge 56 of the wrapping material strip 21.

The first gluing device 51 and the second gluing device 71 are mounted on a jig 92. The second gluing device 71 is in this case connected by connecting elements 93, 93 'fixed to the clamping device 92, which is preferably a detachable connection. The relative adjustment of the first gluing device 51 to the second gluing device 71 can take place via the fact that the first gluing device 51 is rotatably mounted in particular in the holding opening resulting from the tensioning device 92. For this purpose, fixing and releasing the rotational release of the first gluing device 51 is enabled by means of a clamping screw 90, in cooperation with the slot 91.

In a corresponding loosening of the clamping screw 90 so the first gluing device 51 can be rotated about a rotation axis, so that the eccentric or parallel to the axis of rotation offset first nozzle body 52 can be pivoted on a circular path moving, wherein on the one vertical and 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, the tension screw 90 is tightened, so that a misalignment can be prevented.

It is then possible to pivot the first and the second gluing devices 51 and 71 together or together away from a gluing position shown in FIG. 3, for example by To carry out maintenance work. In this case, the relative position of the nozzles to each other is not changed.

At 95, a glue supply for cold glue is still provided, which is assigned to the first glueing device 51 and can pass through the first nozzle body, the first nozzle tip 54 and the first outlet opening 55. In the second glueing device 71, a heating device 96 is provided, which provides a temperature, for example in the range of 150 ° C, so that the hot glue is heated accordingly. In order to prevent the first glueing device 51 from being heated, an insulating device 94 is also provided, which is arranged between the tensioning device 92 and the heating device 96.

LIST OF REFERENCE NUMBERS

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 device

52

first nozzle body

53

glue

54

first nozzle tip

55

first exit opening

56

paper edge

57

cover strip

58

border area

59

tobacco rod

60

gluing device

F

conveying direction

71

second gluing device

72

second nozzle body

74

second nozzle tip

75

second exit 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) of 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 to the wrapping material strip (21), characterized in that the gluing device (60) comprises a first gluing device (51) applying a first glue lane to the wrapping material strip (21) and a second gluing device (71) providing a second gluing device (71) Leimspur on the wrapping material strip (21) applies comprises. Device according to claim 1, characterized in that the first and the second gluing device (51, 71) are arranged so that the first and second glue tracks are parallel 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) are mounted on a, in particular pivotable, common fastening device (92). 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 relative to one another , 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 less than 2 cm, in particular less than 1 cm. Device according to one of claims 1 to 5, characterized in that the gluing devices (51, 71) in the region of a formatting 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 that , viewed in the conveying direction of the wrapping material strip (12), a cooling web is provided behind the second glueing device (71). 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 a suction belt conveyor. Use of a gluing device (60) with a first gluing device (51) which emits a first glue line and with a second gluing device (71) which emits a second glue line for applying the first and second glue tracks to a wrapping material strip (21) of a strand (59) the tobacco processing 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 processing industry from fibers of finite length, in particular a filter or tobacco rod, in several steps: a wrapping material strip (21) is bent around the fibers by means of a formatting device (26), a first glue track is applied to the wrapping material strip (21) by means of a first glueing device (51), - A second glue trace is by means of a second gluing device (71) on the wrapping material strip (21) applied. A method according to claim 12, characterized in that the first and second glue tracks are applied parallel to each other and in the vicinity of an outer paper edge (56) of the wrapping material strip (21). A method according to claim 12 or 13, characterized in that the glue traces are applied shortly before the closing of the wrapping material strip (21). Method according to one of claims 12 to 14, characterized in that first a glue trace is applied, which is arranged close to the fibers and then a glue trace is applied, which is located farther from the fibers. Method according to one of claims 12 to 15, characterized in that the first glue trace is a cold glue trace. Method according to one of claims 12 to 16, characterized in 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 (21) provided with the glue traces is glued. Method according to one of claims 12 to 18, characterized in that in a subsequent step, the provided with the bonded wrapping material strip (21) 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 is produced by drying prior to the subsequent step of curing the strand provided with the bonded wrapping material strip (21). 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 mark is passed under a cooling web. Strand (59) of the tobacco processing industry of fibers of finite length, in particular 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. A strand (59) according to claim 23, characterized in that the first and second adhesive seams are parallel to each other 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 cold glue adhesive seam and / or the second glue seam is a hot glue glue seam. A strand (59) according to any one of claims 23 to 25, characterized in that the cold glue adhesive seam faces the outer paper edge (56) of the wrapping material strip (21) and the hot glue glue seam extends away from the paper edge (56) of the wrapping material strip (21). A strand (59) according to any 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.

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