EP3050442A1 - Method and device for the production of filters for the tobacco processing industry - Google Patents

Abstract

The invention relates to a method for producing filters of the tobacco processing industry with the following method steps:
Continuously conveying a filter material (5) from a filter material supply into a format device (7) for forming a continuous filter strand,
- Introducing a liquid additive (19) receiving, elongated and continuous introduction material (1), in particular a thread, in the filter material (5) during conveying of the filter material (5).

The invention further relates to a corresponding device.

Description

• Kontinuierliches Fördern eines Filtermaterials von einem Filtermaterialvorrat in eine Formatvorrichtung zum Ausbilden eines kontinuierlichen Filterstrangs,
• Einbringen eines ein flüssiges Additiv aufnehmenden, länglichen und kontinuierlichen Einbringmaterials, insbesondere eines Fadens, in das Filtermaterial beim Fördern des Filtermaterials.

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

• Continuously conveying a filter material from a filter material supply into a format device for forming a continuous filter strand,
• Introducing a liquid additive receiving, elongated and continuous introduction material, in particular a thread, in the filter material during conveying of the filter material.

The invention further relates to an apparatus for producing filters of the tobacco processing industry with a filter material delivery device, wherein the filter material delivery device a Having guide portion through which a filter material is feasible or guided.

In the manufacture of filters of the tobacco processing industry, it is desirable for some products to incorporate additives into the filter material. For this purpose, an introduction material, which absorbs the additive and is elongate and continuous, is usually introduced into the filter material and previously impregnated or wetted with an additive, such as a flavor.

EP 2 178 403 B1 provides for this a channel through which an additive is introduced and through which a solid support is drawn, with continuous immersion in the additive, to allow the additive to be absorbed by the wearer.

EP 2 046 154 B1 provides to introduce into a filter material in the production of the filter strand, a non-Flavourstoff filament material and to supply a flavor agent.

EP 2 123 180 A1 discloses a device for introducing additives into a provided for producing a smoking article and already round-shaped strand with a guide portion through which the strand is feasible in the transport direction, and an acting in the guide portion feed device for downstream feed of additives in the strand located in the guide section wherein the feeding device is designed such that it delivers the additive or the additives in at least two beams directed at an angle to one another.

It is an object of the present invention to enable a better and more accurate filling of a filter strand with an additive.

• Kontinuierliches Fördern eines Filtermaterials von einem Filtermaterialvorrat in eine Formatvorrichtung zum Ausbilden eines kontinuierlichen Filterstrangs,
• Einbringen eines ein flüssiges Additiv aufnehmenden, länglichen und kontinuierlichen Einbringmaterials, insbesondere eines Fadens, in das Filtermaterial beim Fördern des Filtermaterials,
• Auftragen des Additivs auf das Einbringmaterial beim Einbringen des Einbringmaterials in das Filtermaterial, wobei
• das Additiv vor dem Auftragen auf das Einbringmaterial wenigstens abschnittsweise getrennt zu dem Einbringmaterial in einem gemeinsamen Förderorgan gefördert wird und/oder wobei das Additiv mit einer Auftragsgeschwindigkeit auf das Einbringmaterial aufgetragen wird, die im Wesentlichen der Fördergeschwindigkeit des Einbringmaterials entspricht oder größer ist.

This object is achieved by a method for producing filters of the tobacco processing industry with the following method steps:

• Continuously conveying a filter material from a filter material supply into a format device for forming a continuous filter strand,
• Introducing a liquid additive receiving, elongated and continuous introduction material, in particular a thread, in the filter material during conveying of the filter material,
• Applying the additive to the introduction material when introducing the introduction material into the filter material, wherein
• the additive is at least partially separately conveyed to the introduction material in a common conveying member before application to the introduction material and / or wherein the additive is applied to the introduction material at a deposition rate that substantially corresponds to the conveying speed of the introduction material or greater.

By conveying the additive and the introduction material in a common conveying member, it is possible to selectively apply the additive to the introduction material. In addition, it is according to the invention such that the application of the additive at an application speed which is essentially the conveying speed of the introduction material corresponds, the additive can penetrate better in the introduction material, whereby a better saturation of the introduction material is made possible with the additive. The application speed is preferably the speed or the speed component which is present in the conveying direction of the introduction material. Preferably, this is between 90% to 130% of the conveying speed of the introduction material, in particular between 95% and 120% of the conveying speed of the introduction material, in particular preferably between 100% and 110% of the conveying speed of the introduction material.

The conveying speed of the introduction material preferably corresponds to the conveying speed of the filter material.

The application speed is preferably controlled or regulated as a function of the conveying speed of the introduction material. As a result, an efficient loading of the introduction material with an additive is made possible at any conveying speed of the conveying material.

Preferably, in the separate conveying of the additive and the introduction material, a section-wise parallel conveying is provided. As a result, a common conveyor organ can be realized, which is very compact, i. building with a small cross-section is.

Preferably, the application of the additive takes place on the introduction material outside of the common conveying member. As a result, the entire additive reaches the introduction material and any additive which does not penetrate into or attaches to the introduction material passes into the filter material which is arranged around the introduction material. This allows a precise amount of a Additive are specified in the filter strand to be manufactured. The application of the additive thus takes place preferably when introducing the introduction material into the filter material.

Preferably, the additive prior to application to the introduction material is conveyed completely separated from the introduction material in the common conveying member. Preferably, the separate promotion is provided at least until the output of the common conveying member.

Preferably, the filter strand is formed downstream of the application or when the additive is applied to the introduction material in the format device. The filter strand is in this case usually formed so that the filter material is introduced into an inlet nozzle of a format device. In this inlet region or in an area in which an inlet finger of a format device is present, the introduction material is preferably introduced centrally into the filter material, and where the introduction material is introduced into the filter material, the additive is applied to the introduction material.

Thereafter, a wrapping material strip is usually wrapped around the filter material, especially in the format device, and a seam of the wrapping material strip is sealed with an adhesive. As a result, a round in cross-section filter strand is formed. However, it can also be formed an oval shaped filter strand.

Preferably, the applied amount of the additive is controlled.

Preferably, to control the amount of additive applied, there are a plurality of additive delivery lines in the common delivery member provided, wherein a predetermined number of additive delivery lines depending on the amount of additive to be applied promote additive. In this case, for example, 10 additive delivery lines can be provided and, depending on the amount of additive to be applied, more or fewer delivery lines for the additive to be delivered can be opened or closed.

Preferably, the additive delivery lines are arranged so that always opposing additive delivery lines are opened. Thus, additive is always applied from opposite sides to the introduction material. Preferably, some additive delivery lines have a different cross section than other additive delivery lines, with the opposed additive delivery lines preferably having the same cross section.

Preferably, the additive is conveyed through at least one nozzle for application to the introduction material, wherein in particular an additive jet is produced, which is conveyed at an angle of 10 ° to 60 °, in particular 20 ° to 50 °, to the introduction material onto the introduction material. In this way, the meeting point of the additive can be set exactly to the introduction material in the conveying direction downstream of the output of the common conveying member.

The object is further achieved by a device for the production of filters of the tobacco processing industry with a filter material conveying device, wherein the filter material conveying device has a guide portion through which a filter material is feasible or guided, wherein a introduced into the guide portion common conveyor member for introducing an elongated and continuous Einbringmaterials and an additive is provided, wherein the additive downstream of the output of the conveying member can be applied to the introduction material or applied. Characterized in that the additive downstream of the output of the conveying member is applied to the Einbringmaterial or is applied, a very accurate metering of the additive is possible.

Preferably, an additive conveyor is provided, by means of which the additive can be applied or applied to the introduction material at an application speed which substantially corresponds to or is greater than the conveying speed of the introduction material. The additive conveyor preferably includes a controller or controller to control or control the rate of application. For this purpose, the control device or the control device, a Einbringmaterialfördergeschwindigkeit, which results from the conveying speed of the filter material, and substantially, for example, the conveying speed of a format strip in the format device, supplied to adjust a corresponding additive conveying speed via the control device or control device.

Preferably, a sensor for measuring the speed of the additive is provided. Alternatively, the viscosity of the additive, which is known via a temperature measurement and knowledge of the additive itself or the behavior of the viscosity of the additive over the temperature, the diameter of the delivery line and the pressure that the pump provides, the speed of the additive.

The additive conveyor may have a pump which introduces additive from an additive supply into one or more delivery lines of the common delivery member and supplies it with a corresponding pressure, so that the additive is ejected at the exit of the common delivery member at a corresponding speed becomes.

Preferably, the common conveying member is designed to promote both the introduction material and the additive. Preferably, the common conveying member is formed as a tube having continuous conveying lines for the introduction material and the additive.

Preferably, the common conveying member for the introduction material and the additive completely separate conveying channels, so that the introduction material and the additive in the common conveying member are conveyed, so that only at the output of the common conveying member, the additive is applied to the Einbringmaterial or applied.

The tube has, in particular, a central delivery line for the introduction material and, outside this delivery line, corresponding additive delivery lines or delivery lines for the additive.

At least two delivery lines for the additive are preferably provided around a central delivery line.

For the additive, in particular a plurality, preferably more than three, delivery lines are provided, wherein in particular an even number of delivery lines is provided. The delivery lines for the additive may also be provided for various additives. In addition, different sizes of the delivery line can be provided in order to better adjust the dosage of the additive can.

Preferably, the delivery lines for the additive or the additives are arranged symmetrically about the central delivery line. Preferably, on the output side of the delivery lines for the additive are provided at a predeterminable angle to the Einbringmaterial aligned nozzles. This serves to selectively apply additive to the introduction material. In this case, the nozzles are aligned in such a way that the additive jet, which is directed onto the introduction material, hits the introduction material at the predeterminable angle. The predeterminable angle is preferably an angle between 20 ° and 50 °.

The number of conveying lines leading the additive is preferably designed to be switchable or switchable.

Preferably, an additive or various additives may be used. The additive conveyor may be designed such that, in the case of various additives, the pump or pumping device is simultaneously assigned the additives to the respective delivery lines for additives from different additive supplies.

The filter material is preferably a filter tow. Preferably, the additive is a flavor. Further preferably, the introduction material is a yarn or a thread.

The invention is characterized in that the introduction material and the additive is transported separately in a multi-nozzle tube or tube. This redesigned tube, which may also be referred to as a common conveyor, is used in place of a commonly used burster tube. Here, the introduction material is guided in a central bore of the tube. The additive is passed through several small, circumferentially distributed channels or additive delivery lines. In this case, the additive is applied in at least two opposing additive delivery lines. The more additive on the insertion material should be applied, the more channels are added. For example, two, four, six, eight, ten or twelve channels can be switched on. The feeding of the additive into the channels takes place outside a format device of a filter rod machine.

The application of the additive to the introduction material takes place at the exit or after the exit from the tube.

The invention has the advantage that the additive is applied to the introduction material under high pressure, resulting in improved uptake of the additive by the introduction material. The greatest possible accuracy of the additive application quantity is achieved, since the supply and the application of the additive are specifically intended for strand forming at the last possible time.

Further features of the invention will become apparent from the description of embodiments according to the invention together with the claims and the accompanying drawings. Embodiments of the invention may satisfy individual features or a combination of several features.

Fig. 1

eine schematische Ansicht eines Teils einer Formatvorrichtung einer Strangmaschine der Tabak verarbeitenden Industrie,

Fig. 2

eine schematische Schnittdarstellung eines erfindungsgemäßen Förderorgans,

Fig. 3

eine schematische Schnittdarstellung durch ein erfindungsgemäßes Förderorgan in einer anderen Ausführungsform und

Fig. 4

eine Schnittdarstellung entlang der Schnittlinie A-A der Fig. 3.

The invention will be described below without limiting the general inventive idea by means of embodiments with reference to the drawings, reference being expressly made to the drawings with respect to all in the text unspecified details of the invention. Show it:

Fig. 1

a schematic view of a part of a format device of a strand machine of the tobacco processing industry,

Fig. 2

a schematic sectional view of a conveying member according to the invention,

Fig. 3

a schematic sectional view through an inventive conveying member in another embodiment and

Fig. 4

a sectional view along the section line AA of Fig. 3 ,

In the drawings, the same or similar elements and / or parts are provided with the same reference numerals, so that apart from a new idea each.

Fig. 1 schematically shows a part of a formatting device 7 a strand machine of the tobacco processing industry. A filter material 5, for example a filter tow material, is introduced into the format device 7 after appropriate preparation in the direction of movement B by a funnel device 6. The format device 7 has a first format upper part 7a, which comprises the funnel device 6, and a second format upper part 7b, which comprises, for example, an inlet finger 8. The inlet finger 8 presses the introduced filter material 5 on a not shown format tape, which is guided in the direction of movement B by the format device 7.

On the format tape usually a wrapping material strip is arranged, which is wound around a usually round shaped filter material 5 in the formatting device 7, wherein at the end of the wrapping material strip is provided at an adhesive seam with adhesive and the wrapping material strip is so closed. It then joins a Nahtplätte to a Setting the adhesive, such as glue, by heating or cooling to accelerate. Finally, the filter material strip produced in this way is cut to length in accordance with specifiable long filter rods.

In order to introduce an additive 19, such as a flavor, into the filter material 5, a tube 1, for example a tube, which is guided through the filter material 5 and whose outlet 10 is arranged centrally in the filter material 5, guides a thread 1 via a common conveying member 2, which is provided with an additive 19. The additive 19, for example a flavor, is supplied from an additive reservoir 12 via a line 14 to a pump 11 and introduced via a line 14 from the pump 11 into the common conveying member 2. In the common conveyor member 2, the thread 1 and the additive 19 is guided separately, parallel to the output 10 of the common conveyor member 2. The common conveyor member 2 is explained in more detail in the following figures.

In addition, a control device 13 is provided, which controls the pump 11, for example via an electrical line 15. The control device 13 can preferably also control valves which control the inflow of additives 19 in additive lines in the common conveying member 2.

Fig. 2 shows in a schematic representation, in a partial sectional view, the common conveyor member 2. It is shown a central bore or a Einbringmaterialkanal 16, in which the introduction material 1, for example a thread, is conveyed in the direction of movement B. In addition, additive delivery lines 17 are provided, in which an additive 19 is conveyed, and also in the direction of movement B. At the output of the additive channels or

Delivery lines 17 each have a nozzle 18 is shown, which is aligned so that it applies the additive 19 in an additive beam 20 at an angle α on the thread 1. In this embodiment, the angle α is 27 °.

In another embodiment, in Fig. 3 is shown, the application angle α is greater, ie the nozzles 18 are aligned so that a different application angle α is formed. The angle here is 47 °, for example. It can be seen that the place of application, which is represented by the dotted line, in the direction of movement B or in the conveying direction of the thread 1 downstream of the output 10 of the common conveying member 2 is provided. In addition, it can be seen that the additive 19 and the thread 1 are conveyed separately in the common conveying member.

Fig. 4 schematically shows a sectional view along the section AA Fig. 3 , Here it can be seen that in the common conveying member 2 of the Einbringmaterialkanal 16 is arranged centrally and symmetrically around these the additive channels 17 are arranged. There are eight additive channels 17 shown. There may also be fewer or more additive channels 17. Depending on the required quantity, more or fewer additive channels 17 are to be used. These can be switched on or off, for example, by valves. Preferably, opposing additive channels 17 are always used to apply additive 19 to the yarn 1.

The cross-section of the additive channels 17 may be the same size or even be partially different. It may, for example, be provided to provide two additive channels 17 with a diameter of 0.11 mm and the other additive channels 17 with a cross section of 0.2 to 0.4 mm, in particular 0.35 mm.

The distance of the additive channels 17 to the outer circumference of the common conveying member 2 is preferably one millimeter. The distance to the Einbringmaterialkanal 16 is preferably also at one millimeter. The Einbringmaterialkanal 16 preferably has a diameter of three times the thread diameter, for example, the thread diameter is between 0.5 and 2 mm or preferably 0.8 to 1.2 mm. With a thread diameter of 1.2 mm, this would result in a diameter of the introduction material channel 16 of 3.6 mm. The larger Einbringmaterialkanaldurchmesser compared to the diameter of the thread results from the fact that possibly the thread can knot and this should not lead to a standstill of the machines.

All mentioned features, including the drawings alone to be taken as well as individual features that are disclosed in combination with other features are considered alone and in combination as essential to the invention. Embodiments of the invention may be accomplished by individual features or a combination of several features. In the context of the invention, features which are identified by "particular" or "preferably" are to be understood as optional features.

LIST OF REFERENCE NUMBERS

1

thread

2

joint funding body

3

deflecting

5

filter material

6

hopper means

7

format device

7a

Format shell

7b

Format shell

8th

intake finger

10

output

11

pump

12

stock

13

control device

14

management

15

electrical line

16

Einbringmaterialkanal

17

additive channel

18

jet

19

additive

20

additive beam

B

movement direction

α

application angle

Claims (15)

Process for the production of filters of the tobacco processing industry with the following process steps: Continuously conveying a filter material (5) from a filter material supply into a format device (7) for forming a continuous filter strand, - introducing a liquid additive (19) receiving, elongated and continuous introduction material (1), in particular a thread, in the filter material (5) during conveying of the filter material (5), - Applying the additive (19) on the introduction material (1) during introduction of the introduction material (1) in the filter material (5), wherein - The additive (19) prior to application to the introduction material (1) at least partially separately to the introduction material (1) in a common conveying member (2) is promoted and / or wherein the additive (19) at an application rate on the introduction material (1 ) is applied, which is substantially equal to or greater than the conveying speed of the introduction material (1). A method according to claim 1, characterized in that the application speed is controlled or regulated as a function of the conveying speed of the introduction material (1). A method according to claim 1 or 2, characterized in that when separately conveying the additive (19) and the introduction material (1) a section-wise parallel conveying is provided. Method according to one of claims 1 to 3, characterized in that the application of the additive (19) on the introduction material (1) outside of the common conveying member (2). Method according to one of claims 1 to 4, characterized in that downstream of the application or during application of the additive (19) on the introduction material (1) in the format device (7) of the filter strand is formed. Method according to one of claims 1 to 5, characterized in that the applied amount of the additive (19) is controlled. A method according to claim 6, characterized in that for controlling the applied amount of the additive (19) a plurality of additive delivery lines (17) in the common conveying member (2) are provided, wherein a predetermined number of the additive delivery lines (17) depending on the amount of additive to be applied (19) promote additive (19). Method according to one of claims 1 to 7, characterized in that the additive (19) by at least one nozzle (18) for application to the introduction material (1) is promoted, in particular an additive jet (20) is generated, which at an angle from 10 ° to 60 °, in particular 20 ° to 50 °, is conveyed to the introduction material (1) on the introduction material (1). Apparatus for producing filters of the tobacco processing industry with a filter material conveying device (7), wherein the filter material conveying device (7) has a guide section through which a filter material (5) can be guided or guided, wherein a common conveying member (2) inserted into the guide section is used Introducing an elongate and continuous introduction material (1) and an additive (19) is provided, wherein the additive (19) downstream of the output (10) of the conveying member (2) on the introduction material (1) can be applied or applied. Apparatus according to claim 9, characterized in that an additive conveyor (11) is provided, by means of which the additive (19) can be applied or applied onto the introduction material (1) at an application speed which is in the Substantially corresponds to the conveying speed of the introduction material (1) or is greater. Apparatus according to claim 9 or 10, characterized in that the common conveying member (2) is adapted to promote both the introduction material (1) and the additive (19), wherein in particular the common conveying member (2) is designed as a tube, the continuous feed lines (16, 17) for the introduction material (1) and the additive (19). Apparatus according to claim 11, characterized in that around a central conveying line (16) around at least two delivery lines (17) for the additive (19) are provided. Apparatus according to claim 12, characterized in that for the additive (19) a plurality of delivery lines (17) are provided, in particular an even number of delivery lines (17) is provided. Device according to one of claims 11 to 13, characterized in that on the output side of the conveying lines (17) for the additive (19) at a predeterminable angle (α) to the Einbringmaterial (1) aligned nozzles (18) are provided. Apparatus according to claim 13 or 14, characterized in that the number of the additive (19) leading conveying lines (17) is designed switchable or disconnectable.

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