DE102006027598A1 - Process for producing a strand of the tobacco processing industry and stranding machine - Google Patents

Abstract

The invention relates to a rod making machine of the tobacco processing industry comprising a nozzle device (2, 2 ') comprising a nozzle opening (10, 10'), comprising a strand building device (6, 6 ', 12, 12', 13, 13 ') a suction belt conveyor (6, 6 '), wherein the nozzle opening (10, 10') in the region of the Saugstrangförderers (6, 6 ') is arranged, and with a trimming device (23) comprising a trimmer (24). The invention further relates to a method for producing a strand (7, 7 ') of the tobacco-processing industry. The strand machine according to the invention is characterized in that the nozzle opening (10, 10 ') in the conveying direction (9, 9') of the Saugstrangförderers (6, 6 ') upstream of the trimmer (24) at a height (h') is arranged, the between the trimmer (24) and the Saugstrangförderer (6, 6 '), or that the nozzle opening (10, 10') in the conveying direction (9, 9 ') of the Saugstrangförderers (6, 6') downstream of the trimmer (24) in Region of Saugstrangförderers (6, 6 ') is arranged. The method according to the invention is characterized by the following method steps: conveying of separated fibers (17, 17 ') in the direction of a suction strand conveyor (6, 6') in a conveying direction (12, 12 ', 13, 13'), - shuddering of the fibers (17, 17 ') on a suction belt conveyor (6, 6'), - feeding an additive (1, 1 ') to the fibers (17, 17'), - trimming the fibers queued on the suction belt conveyor (6, 6 ') , (17, 17 ', 20) or on the ...

Description

The The invention relates to a rod making machine of tobacco processing Industry with a nozzle device, comprising a nozzle opening, with a strand building device comprising a suction belt conveyor, the nozzle opening in Range of Saugstrangförderers is arranged, and with a trimming device, comprising a Trimmer.

• – Fördern von vereinzelten Fasern in Richtung eines Saugstrangförderers in einer Fördervorrichtung,
• – Aufschauern der Fasern auf einem Saugstrangförderer,
• – Zuführen eines Zusatzstoffes zu den Fasern und
• – Trimmen der auf den Saugstrangförderer aufgeschauerten Fasern auf eine vorgebbare Höhe.

The invention further relates to a method for producing a strand of the tobacco processing industry with the method steps:

• Conveying individual fibers in the direction of a suction belt conveyor in a conveying device,
• - shuddering of the fibers on a suction belt conveyor,
• - Adding an additive to the fibers and
• - Trimming the aufschnank on the Saugstrangförderer fibers to a predetermined height.

Out WO 2005/096851 A1 discloses a method and a device for Production of a smokable article, in which tobacco is puffed up and an extrudate is formed, wherein the extrudate is on the quenched Tobacco is applied, known.

From the DE 33 11 886 C2 For example, there is known a process for producing a cigarette in which an admixture of expanded tobacco pulp is applied to a tobacco layer. In addition, it is disclosed that the expandable tobacco pulp may also be provided with a flavorant, for example menthol.

From the EP 0 405 929 A2 is intended to add a liquid strand with additives to cigarette rods, wherein a nozzle is arranged in the region of a Aufschauerbereichs of tobacco, which serves to introduce the fluid into the tobacco.

From the US 2 543 277 A are known an apparatus and a method for producing a tobacco rod, wherein at predetermined locations of the tobacco rod, a fire-retardant material in the tobacco rod and on the wrapping material is applied.

It is the object of the present invention, a stranding machine of Tobacco processing industry and a method of manufacturing a strand of the tobacco processing industry, by whose even when adding an additive is a uniform and homogeneous fiber strand, for example from tobacco fibers or from filter material fibers, can be produced.

Is solved this task by a rod maker of tobacco processing Industry with a nozzle device, comprising a nozzle opening, with a strand building device comprising a suction belt conveyor, the nozzle opening in Range of Saugstrangförderers is arranged, and with a trimming device, comprising a Trimmer, with the nozzle opening in conveying direction the Saugstrangförderers upstream of the trimmer at a height arranged between the trimmer and the suction belt, or wherein the nozzle opening in conveying direction the Saugstrangförderers downstream of the trimmer is arranged in the region of Saugstrangförderers.

hereby is it possible that emerging from the nozzle opening Additive only in that part of the material of the formed Strand can reach, for the finishing to rod-shaped Products should be used. The part of the hung up material, the arranged by the trimmer of the on the suction belt or the Saugstrangförderer Material is separated, this is not with the additive contaminated and can for the further processing back into the circuit to shiver provided on the Saugstrangförderer become. In this case, particular use is made of the knowledge that due to the suction produced by the suction belt conveyor is, the emerging from the nozzle opening additive to the suction belt conveyor or sucked to the suction belt, so that in particular when arranged the nozzle opening in conveying direction the Saugstrangförderers upstream the trimmer efficient for that that is not taken care of to be further processed strand The material separated from the trimmer has just not been contaminated with additive becomes.

in the The scope of the invention may be replaced by height also the term distance to the suction belt conveyor or suction belt of Saugstrangförderers serve, wherein the nozzle opening in in the event that the nozzle opening in conveying direction the Saugstrangförderers upstream of the trimmer is arranged such that the distance of the Nozzle opening to suction rod or to the suction belt is slightly smaller than the distance of the trimmer to the suction belt conveyor or to the suction belt.

Preferably is the nozzle opening in nearby arranged the trimmer. Near the trimmer means in Frame of the invention, in particular in the conveying direction of the Saugstrangförderers in nearby of the trimmer, i. upstream or downstream of the trimmer. Near the trimmer in particular also means at a distance of 0.5 cm to 50 cm, particularly preferably in a range between 5 cm and 30 cm.

Preferably corresponds to the height the nozzle opening in Essentially a height one on the Saugstrangförderer arranged and trimmed material strand. The height is preferably provided slightly above the trimmer, in the event that the nozzle opening in conveying direction the Saugstrangförderers upstream the trimmer is arranged. That is, the distance of the nozzle opening to Suction belt or suction belt conveyor corresponds essentially to the thickness or the height of the arranged on the Saugstrangförderer and trimmed strand of material or is a little lower. In the other Case that the nozzle opening in conveying direction the Saugstrangförderers downstream the trimmer is arranged, the height can also be substantially the Height of arranged on the Saugstrangförderer trimmed material strand correspond; this is however preferable a little below the trim height or the distance of the nozzle opening to suction rod or to the suction belt is a little larger than the height of the material strand.

If the nozzle device comprises a nozzle body and a conveyor channel in material conveying direction upstream the Saugstrangförderers at the conveyor channel is provided, wherein the delivery channel two opposing channel walls comprising, wherein the nozzle body to or is arranged in a channel wall, wherein in the opposite Duct wall in the area of the nozzle body one Recess is provided, it is possible even when providing a Nozzle in or on a channel wall, a uniform shudder of fibers or to allow tobacco or filter material on the Saugstrangförderer and also to allow an order or an entry of an additive. Preferably, the nozzle device an extrusion nozzle, by means of in particular preferably a fine atomization of the additive is made possible. The additive may include a tobacco slurry, a binder, an additive, a flavoring, a fire promoter and / or a fire retardant include. Tobacco porridge is for example reconstituted tobacco in a pasty one Consistency. Reconstituted tobacco usually consists of water, tobacco dust and a binder. about The water content influences the consistency of the mass. When Binders come e.g. Methyl cellulose, dextrin glue, starch, polyvinyl acetate glue, Polyvinyl alcohol or modified starch in question. If the nozzle device downstream the trimming device is arranged, is the described new embodiment the nozzle and channel cheek not necessary.

Preferably are the canal walls transverse to a material receiving surface of the strand building device arranged. This is a very efficient conveying to a strand too forming material allows. If the cross section of the delivery channel at least in the area of the nozzle body is great as removed from the nozzle body, in particular in the area of the suction belt conveyor, is a substantially unobstructed flow around the nozzle body with material, for example Fibers, allows.

Preferably the nozzle device comprises a Nozzle body, where Furthermore a conveyor with a delivery channel is provided, wherein the conveying device upstream the Saugstrangförderers is arranged, wherein the conveying channel two opposite ones channel walls comprising, wherein the nozzle body to or in the channel wall is arranged in the opposite to the opposite Channel wall less along a strand trainee material flows.

in the In the context of the invention, the term "upstream" includes a position relative to the conveying direction a material to be formed into a strand. Preferably the nozzle device an extrusion nozzle or comprises an extrusion nozzle, which particularly preferably serves to fine-tune an additive atomized to apply to the aufgeauerte material or in the material entered.

Of the Nozzle body is preferably asymmetric, which is particularly preferably a streamlined Design results. Preferably, one emerges from the nozzle device, in particular the nozzle opening, exiting additive in the direction of the conveying direction of the Saugstrangförderers out. This results in a very good distribution of the additive in the material possible. The nozzle device or the nozzle the nozzle device shows preferably in the direction of the conveying direction of Suction rod. The exiting additive contains thus a component of movement in the conveying direction of Saügstrangförderers. By the suction air or the negative pressure generated by the Saugstrangförderer will get the additive further comprises a component of movement in the direction of Suction rod. This can result in a very fine atomization of the additive.

The nozzle device preferably comprises a capillary tube to increase the effect of atomization. Furthermore, the capillary allows a better backflow of the introduced fluid or the introduced additive. The additive is preferably a fluid or an extrudate, preferably in liquid form. The nozzle device can be designed as a partially flowed volume body or as a capillary or as a combination of both. If the nozzle body in the conveying direction of a material to be formed into a strand has a larger area than transversely, in particular perpendicular, to this conveying direction, it is possible to form a compact nozzle body whose nozzle opening can be arranged in the vicinity of the suction belt conveyor, without negatively influencing the churning of the material to be formed into a strand. Preferably, the nozzle body is at least partially designed streamlined. Preferably, the nozzle body is designed completely streamlined.

A very easy to implement stranding machine is given, if provided two delivery channels are, wherein the nozzle body a Wall of the first conveyor channel with a wall of the second conveyor channel combines.

• – Fördern von vereinzelten Fasern in Richtung eines Saugstrangförderers in einer Fördervorrichtung,
• – Aufschauern der Fasern auf dem Saugstrangförderer,
• – Zuführen eines Zusatzstoffes zu den Fasern,
• – Trimmen der auf den Saugstrangförderer aufgeschauerten Fasern oder des auf dem Saugstrangförderer aufgeschauerten Faserkuchens auf eine vorgebbare Höhe, wobei das Zuführen des Zusatzstoffes zu den Fasern kurz vor oder kurz nach dem Trimmen geschieht.

The object is further achieved by a method for producing a strand of the tobacco processing industry with the following method steps:

• Conveying individual fibers in the direction of a suction belt conveyor in a conveying device,
• - churning of the fibers on the suction belt conveyor,
• Feeding an additive to the fibers,
• Trimming of the fibers stranded on the suction belt conveyor or of the fiber cake which has appeared on the suction belt conveyor to a predeterminable height, the feeding of the additive to the fibers occurring shortly before or shortly after trimming.

By the inventive method Is it possible, upon addition of an additive to a fiber strand a uniform and produce homogeneous fiber strand.

Preferably the method is further developed in that the feeding of the Additive in case of dispensing just before trimming at a height happens below, in particular a little below, the predefinable Height is and in the case of feeding shortly after trimming at a height happens, the above, in particular a little above, the predefinable Height is. This can be very well prevented in the first case that additive is introduced into the part of the fibers which is returned to production, So the part that is not the fiber to be processed further is to be assigned. In the second case, the correspondingly larger height serves to all Fibers in the fiber strand with the additive to occupy. As part of The invention is the term height relative to a reference altitude to understand, where the reference level is zero on the Saugstrangförderer or a suction belt of the Saugstrangförderers lies. A height below the vorgebba ren height has a smaller distance to the reference height than the predetermined height. at a suction belt conveyor, when the material is crouched below a suction belt is the height thus a relative height or a distance to the reference height.

in the The scope of the invention may instead of the term height also the term distance to the bottom of the suction belt of Saugstrangförderers chosen being, whereby the prescribable height the height or Thickness of the fiber strand after trimming corresponds to the height, the below this predetermined height is, a distance that is less, and a height that is above the predeterminable Height is, corresponds to a distance that is larger.

Preferably includes the conveying the occasional fibers passing the fibers around a nozzle body, wherein for passing the fibers around the nozzle body, the conveying device in the area of the nozzle body widened is. For feeding an additive to the fibers is preferably an extrudate, in particular preferably a fluid, provided and by means of a nozzle fed to the fibers. In this case, the additive may preferably be finely atomized, so that there is a kind of cloud of additive with small particles, which can adhere to the fibers. This makes it possible, for example, with an additive in Form of a binder with very small amounts of binder one Material strand, such as a tobacco or a filter strand produce, with very small amounts of binder a very good adhesion of the filter components or tobacco rod components allows each other.

Preferably will be the larger amount the fibers in the region of the nozzle body opposite Wall of the conveyor promoted. The nozzle body is located thus dervorrichtung in or on the wall of För or the funding channel, at which a smaller amount of fibers is transported. It may further be provided to add other additives, such as granules or powder, but not necessarily from the nozzle device supplied be, but even before the nozzle device can be added to the fibers.

Preferably happens the promoting by means of a transport air stream. This results in a very good mixing of the subsidized Materials.

Preferably is the additive from the nozzle body in Direction of the conveying direction the Saugstrangförderers issued. Preferably forms on the Saugstrangförderer Non-woven fabric. The nonwoven fabric is expediently in a format device shaped. As indicated above, the additive preferably comprises a binder. The binder is preferably after molding hardened the nonwoven fabric.

The Invention will be described below without limiting the general inventive concept of exemplary embodiments with reference to the drawings, with respect to all not closer in the text explained Details of the invention expressly is referred to the drawings. Show it:

1 a schematic side view of a wall of a device according to the invention,

2 a schematic sectional view of the device according to the invention 1 in a tilted position of 90 °,

3 a schematic sectional view of the device according to the invention 1 in a top view tilted by 90 °,

4 a schematic sectional view of another device according to the invention,

5 a schematic sectional view of a suction channel,

6 a further schematic sectional view of a device according to the invention,

7 a schematic sectional view of another device according to the invention,

8th a schematic sectional view of yet another device according to the invention,

9 a schematic sectional view of another device according to the invention,

10 a schematic sectional view of yet another device according to the invention, and

11 a schematic side view of a device according to the invention.

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.

1 shows a schematic side view of a portion of a strand machine according to the invention of the tobacco-processing industry, wherein by a suction channel 13 only one side wall or channel wall 3 , is shown. At the canal wall 3 is a nozzle device 2 with a nozzle body 15 provided that a nozzle opening 10 comprising a fluid 1 flows. A fibrous material, such as tobacco or filter fibers, is supplied by suction through the suction channel 13 to a suction belt 6 sucked. The suction belt 6 is moving in the 1 from right to left in Saugbandförderrichtung 9 , As a result, it forms from a quencher fibers 7 existing fiber fleece on the Aufschauerfläche 16 , Granules or powders may also be added to the fibers.

As in this embodiment, the nozzle device 2 in the suction channel 13 protrudes, is the transport air flow 8th in sections in the suction channel 13 curved. The fibers 17 are also indicated schematically. In 2 is the embodiment of 1 shown in a rotated by 90 ° schematic sectional view. In the 2 is additionally the second channel wall 5 shown opposite the nozzle device 2 a recess 4 having. The recess 4 serves to no narrowing of the suction channel 13 in the area of the nozzle device 2 provided. The recess is in the conveying direction of the fibers 17 First, the cross section of the channel 13 expanding and then to the suction belt 6 Rejuvenated out again. This results in a convex bulge in the channel wall 5 ,

In 1 is still a trimmer 24 a trim device 23 shown in the conveying direction 9 downstream of the nozzle opening 10 is arranged. The specifiable height h corresponds to the height or the distance of the trimmer to the suction belt 6 and thus the height of the trimmed fiber strand. The height h 'of the nozzle opening 10 is slightly smaller than the predetermined height h. The nozzle opening 10 is thus a bit above the trimmer 24 So closer to the suction belt 6 arranged.

3 shows the embodiment 1 in a schematic plan view in a sectional view tilted 90 ° down. The transitions of the bulge are more expedient contrary to the representation 1 formed without edges.

To a fluid 1 in, for example, introduce a tobacco rod, is a nozzle or nozzle device 2 in the one channel cheek or channel wall 3 and a pocket or recess 4 in the opposite channel cheek or channel wall 5 incorporated. The device should be designed so that the tobacco already hatched 7 on the suction belt 6 and the further shudder is not or not substantially affected.

Here, preferably, the nozzle device 2 on the less streamed from the tobacco stream or material flow channel wall 3 attached or arranged. For suction channels or when using suction channels 13 in combination with fluid bed conveyors 12 , such as in 4 shown, this happens in particular by centrifugal forces through which the material flow more or less clinging to one side. This is in 4 in which a schematic sectional view of a further device according to the invention is shown by the reference numeral 11 characterized by an adjacent fiber stream.

The nozzle device 2 can as partially flowed volume body, such as in the examples of 1 to 4 be formed or as a capillary or as a combination of a partially flowed or full flowed volume body with a capillary 14 , as in 5 can be seen in a schematic sectional view in plan view. Through the capillary tube 14 is a better backflow of an introduced fluid possible.

The nozzle devices used are preferably extrusion die devices. The nozzle can, as in 6 represented as a bridge between channel cheeks and channel walls 3 . 3 ' be educated. Here are two suction channels 13 . 13 ' provided an intermediate wall 3 . 3 ' have, which is partially broken, and in the center preferably a nozzle device 2 is provided, from which a fluid 1 . 1' can escape and into the suction channels 13 . 13 ' is introduced.

The respective in the suction channels 13 . 13 ' Promoted material, such as filter material or tobacco, is on suction belts 6 . 6 ' paused, which is in Saugbandförderrichtung 9 . 9 ' move. In this case, the nozzle device is 2 in a channel wall or a channel wall 3 . 3 ' integrated. The opposite canal walls 5 . 5 ' have no recess in this embodiment. In fact, however, a recess may be provided, or around the recess in the channel wall 3 . 3 ' even to compensate in each case a bulge in the suction channel 13 . 13 ' , in the 6 but not shown. The bulge is preferably also streamlined and in particular asymmetrical and in the region opposite the recess of the channel wall 3 . 3 ' on the canal walls 5 . 5 ' each arranged.

7 shows a further embodiment with two suction belts 6 . 6 ' for the formation of two strands of material. For splitting the material in the form of fibers 17 . 17 ' , to which further components may be added, is a channel wall 5 provided that a large suction channel into two smaller suction channels 13 . 13 ' divides. In the area of the canal wall 5 is a nozzle device 2 . 2 ' or a nozzle body 15 . 15 ' each at the channel walls 3 . 3 ' intended. A recess in the channel wall 5 is not provided in this case. A preferred embodiment is gem. 8th before, if the canal wall 5 recesses 4 . 4 ' to the churning of the fibers 17 . 17 ' on the suction belts 6 . 6 ' not to influence.

In 9 is a schematic representation of another strand machine according to the invention the tobacco-processing industry provided, wherein two strands are produced. It is a design with two fluid bed conveyors 12 . 12 ' intended. That in the fluid bed conveyors 12 . 12 ' conveyed material nestles due to the centrifugal forces on the channel walls 5 . 5 ' at. The nozzle device 2 . 2 ' is on the opposite canal wall 3 . 3 ' arranged to influence the fiber flow or material flow as little as possible.

To reduce the influence of the material flow even further, as in 10 shown schematically, a recess 4 . 4 ' in every canal wall 5 . 5 ' provided opposite the nozzle device 2 . 2 ' or the nozzle body 15 . 15 ' is arranged.

11 shows a schematic side view of a device according to the invention. A suction belt 6 , of which only a section is shown, is via pulleys 22 in the conveying direction 9 emotional. On the suction belt 6 Be fibers, possibly with other additional materials such as granules, in the fiber conveying direction 19 applied. The material adheres to the suction belt due to the suction air 6 and forms in Saugbandförderrichtung 9 magnifying fiber cake 20 from quenched fibers 7 , Through a trimming device 23 with a trimmer 24 becomes the fiber cake 20 cut off at a height h, leaving a trimmed fiber fleece 21 forms. The separated fibers or the separated material is returned to the cycle of strand production and later back to the suction belt 6 aufgeschauert. The trimmed fiber cake in the form of a trimmed fiber fleece 21 has a height h.

Because of the better representability is the trimmer 24 drawn at a height different from h. In reality, the distance of the trimmer corresponds 24 from the suction belt 6 the height h.

In 11 are two different nozzle openings 10 . 10 ' represented, which are to represent the two variants of the nozzle openings according to the invention. In the first variant is the nozzle opening 10 in Saugbandförderrichtung 9 upstream of the trimmer 4 arranged at a height h ', which is slightly less than the height h, so above the trimmer closer to the suction belt 6 lies. This is the distance to the suction belt 6 less than the height h or the distance of the trimmer 24 to the suction belt 6 , Due to the suction air that prevails in the area of the suction belt conveyor, this is in Saugbandförderrichtung 9 discharged fluid 1 also upwards in the direction of the suction belt 6 sucked so that material which is below the height h ', not with the additive 1 or fluid 1 is provided and Thus, after trimming without corresponding "contamination" can be returned to the process.

In the second case, the arrangement of the nozzle opening 10 ' in Saugbandförderrichtung 9 downstream of the trimmer 24 is the height h '' or the distance to the suction belt 6 slightly larger than the height of the trimmed fiber fleece 21 or as tall as this height. In this embodiment of the invention, the trimmed part is in view of contamination by the fluid 1' the material flow completely unproblematic, since this is already carried away.

The heights h, h 'and h''are always relative to the reference height 25 Seen or as a distance to the reference height 25 , The reference height 25 corresponds to the lower edge of the suction belt 6 ,

In one embodiment, the fluid is 1 . 1' an extrudate of reconstituted tobacco in a pasty consistency. The ingredients are 1/3 tobacco dust with a grain size smaller than 0.5 mm and 2/3 binder solution consisting of water with 1% methyl cellulose. The processing temperature is room temperature. The extrusion or injection pressure is dependent on the production or strand speed, the size of the nozzle outlet opening and the viscosity. At a production speed of 10,000 cigarettes per minute, the outlet pressure was about 40 bar.

1, 1'

fluid

2, 2 '

nozzle device

3, 3 '

channel wall

4, 4 '

recess

5, 5 '

channel wall

6 6 '

suction belt

7, 7 '

aufgeschauerte fibers

8th, 8th'

Transport airflow

9 9 '

Saugbandförderrichtung

10 10 '

nozzle opening

11

fitting fiber stream

12 12 '

Fluidized bed conveyor

13 13 '

suction

14

capillary

15 15 '

nozzle body

16 16 '

Aufschauerfläche

17 17 '

fibers

19

Fiber conveying direction

20

fiber cake

21

trimmed non-woven fabric

22

idler pulley

23

trimming device

24

trimmer

25

reference height

H, h ', h' '

height

Claims (23)

Extrusion machine of the tobacco processing industry with a nozzle device ( 2 . 2 ' ), comprising a nozzle opening ( 10 . 10 ' ), with a strand building device ( 6 . 6 ' . 12 . 12 ' . 13 . 13 ' ) comprising a suction belt conveyor ( 6 . 6 ' ), wherein the nozzle opening ( 10 . 10 ' ) in the region of the Saugstrangförderers ( 6 . 6 ' ) and with a trimming device ( 23 ) comprising a trimmer ( 24 ), characterized in that the nozzle opening ( 10 . 10 ' ) in the conveying direction ( 9 . 9 ' ) of the Saugstrangförderers ( 6 . 6 ' ) upstream of the trimmer ( 24 ) is arranged at a height (h ') between the trimmer ( 24 ) and the Saugstrangförderer ( 6 . 6 ' ), or that the nozzle opening ( 10 . 10 ' ) in the conveying direction ( 9 . 9 ' ) of the Saugstrangförderers ( 6 . 6 ' ) downstream of the trimmer ( 24 ) in the region of the Saugstrangförderers ( 6 . 6 ' ) is arranged. Stranding machine according to claim 1, characterized in that the nozzle opening ( 10 . 10 ' ) near the trimmer ( 24 ) is arranged. Rope according to claim 1 or 2, characterized in that the height (h ') of the nozzle opening ( 10 . 10 ' ) substantially at a height (h) of one on the suction belt conveyor ( 6 . 6 ' ) arranged and trimmed material strand ( 21 ) corresponds. Rope according to one of claims 1 to 3, characterized in that the nozzle device ( 2 . 2 ' ) a nozzle body ( 15 . 15 ' ) and that in the material conveying direction ( 19 ) upstream of the Saugstrangförderers ( 6 . 6 ' ) a conveyor channel ( 13 . 13 ' ) is provided, wherein the conveying channel ( 13 . 13 ' ) two opposite channel walls ( 3 . 3 ' . 5 . 5 ' ), wherein the nozzle body ( 15 . 15 ' ) on or in a channel wall ( 3 . 3 ' ) is arranged, wherein in the opposite channel wall ( 5 . 5 ' ) in the region of the nozzle body ( 15 . 15 ' ) a recess ( 4 . 4 ' ) is provided. Rope according to claim 4, characterized in that the channel walls ( 3 . 3 ' . 5 . 5 ' ) across a material ( 7 . 7 ' ) receiving surface ( 16 . 16 ' ) of the strand building device ( 6 . 6 ' ) are arranged. Rope according to claim 4 or 5, characterized in that the cross section of the conveying channel ( 13 . 13 ' ) in the region of the nozzle body ( 15 . 15 ' ) is at least as large as removed from the nozzle body ( 15 . 15 ' ), in particular in the region of the Saugstrangförderers ( 6 . 6 ' ). Rope according to one of claims 1 to 6, characterized in that the nozzle device ( 2 . 2 ' ) a nozzle body ( 15 . 15 ' ), wherein in material conveying direction ( 19 ) upstream of the Saugstrangförderers ( 6 . 6 ' ) a conveyor channel ( 13 . 13 ' ) is provided, wherein the conveying channel ( 13 . 13 ' ) two opposite channel walls ( 3 . 3 ' . 5 . 5 ' ), wherein the nozzle body ( 15 . 15 ' ) on or in the channel wall ( 3 . 3 ' ) is arranged in the compared to the opposite channel wall ( 5 . 5 ' ) less to a strand ( 7 . 7 ' ) traversing material flows along. Rope according to one of claims 4 to 7, characterized in that the nozzle body ( 15 . 15 ' ) is asymmetric. Rope according to one of claims 1 to 8, characterized in that a from the nozzle device ( 2 . 2 ' ), in particular from the nozzle opening ( 10 . 10 ' ), exiting additive ( 1 ) in the conveying direction ( 9 . 9 ' ) of the Saugstrangförderers ( 6 . 6 ' ) exit. Rope according to one of claims 1 to 9, characterized in that the nozzle device ( 2 . 2 ' ) a capillary tube ( 14 ). Rope according to one of claims 4 to 10, characterized in that the nozzle body ( 15 . 15 ' ) in the conveying direction ( 8th . 8th' ) one to one strand ( 7 ) material to be formed has a larger area than transversely, in particular vertically, to this conveying direction ( 8th . 8th' ). Rope according to one of claims 4 to 11, characterized in that the nozzle body ( 15 . 15 ' ) is at least partially designed streamlined. Rope according to one of claims 4 to 12, characterized in that two conveyor channels ( 13 . 13 ' ) are provided, wherein the nozzle body ( 15 . 15 ' ) a wall ( 3 ) of the first conveyor channel ( 13 ) with a wall ( 3 ' ) of the second conveyor channel ( 13 ' ) connects. Method for producing a strand ( 7 . 7 ' ) of the tobacco processing industry with the following procedural steps: - conveying of isolated fibers ( 17 . 17 ' ) in the direction of a Saugstrangförderers ( 6 . 6 ' ) in a conveyor device ( 12 . 12 ' . 13 . 13 ' ), - shuddering of the fibers ( 17 . 17 ' ) on a suction belt conveyor ( 6 . 6 ' ), - feeding an additive ( 1 . 1' ) to the fibers ( 17 . 17 ' ), - trimming on the suction belt conveyor ( 6 . 6 ' ) quenched fibers ( 17 . 17 ' . 20 ) or on the suction belt conveyor ( 6 . 6 ' ) quenched fiber cake ( 20 ) to a predeterminable height (h), wherein the feeding of the additive ( 1 . 1' ) to the fibers ( 17 . 17 ' . 20 . 21 ) happens just before or just after trimming. A method according to claim 14, characterized in that the feeding of the additive ( 1 . 1' ) occurs in the case of feeding just before trimming at a height (h ') which is slightly below the predetermined height (h) and in the case of feeding shortly after trimming is done at a height (h'') which is slightly above the predetermined height (h) is. A method according to claim 14 or 15, characterized in that the conveying of the separated fibers ( 17 . 17 ' ) passing the fibers ( 17 . 17 ' ) around a nozzle body ( 15 . 15 ' ), wherein for passing the fibers ( 17 . 17 ' ) around the nozzle body ( 15 . 15 ' ) the conveying device ( 12 - 13 ' ) in the region of the nozzle body ( 15 . 15 ' ) is widened. Process according to claim 16, characterized in that the greater amount of fibers ( 17 . 17 ' ) in the region of the nozzle body ( 15 . 15 ' ) opposite wall ( 5 . 5 ' ) of the conveyor device ( 12 - 13 ' ). Method according to one of claim 14 or 17, characterized in that the conveying by means of a transport air stream ( 8th . 8th' ) happens. Method according to one of claims 14 to 18, characterized in that the additive ( 1 . 1' ) in the conveying direction ( 9 . 9 ' ) of the Saugstrangförderers ( 6 . 6 ' ) is delivered. Method according to one of claims 14 to 19, characterized in that on the Saugstrangförderer ( 6 . 6 ' ) a non-woven fabric ( 7 . 7 ' . 21 ). Method according to one of claims 14 to 20, characterized in that the nonwoven fabric ( 7 . 7 ' . 21 ) is formed in a format device. Method according to one of claims 14 to 21, characterized in that the additive ( 1 ) comprises a binder. A method according to claim 22, characterized in that the binder after forming the nonwoven fabric ( 7 . 7 ' . 21 ) is cured.