Flat web processing device and method for producing filter rod for tobacco processing industry

Abstract

The invention relates to a method for producing a filter rod for the tobacco processing industry and a flat web processing device (14) for the tobacco processing industry, comprising a flat web extraction device (16) by means of which a flat web (20) can be extracted or extracted from a non-woven fabric pack (15), the non-woven fabric pack (15) having rows (30) arranged next to one another, the invention relates to a flat web extraction device (16) for a non-woven fabric pack (15), comprising a plurality of rows of flat webs (20) which are arranged one above the other, said flat webs (20) having a longitudinal extension (29) and two lateral edges (27, 28), said flat web extraction device (16) having an inlet head (17) which is arranged above the non-woven fabric pack (15). The flat web treatment device (14) according to the invention is improved in that a tension-equalizing device (18) is provided between the inlet head (17) and the nonwoven bag (15), and / or a device (19, 36) is provided, by means of which a relative position of the inlet head (17) with respect to the lateral edges (27, 28) of the section of the flat web (20) can be changed and / or set, and in that a tension-equalizing device (18) is provided between the inlet head (17) and the nonwoven bag (15), and / or a device (19, 36) is provided, by means of which the relative position of the inlet head (17) with respect to the lateral edges (27, 28) of the section of the flat web (20) can be changed and / or set. The segments come from a flat web row (30) of the nonwoven bag (15) from which the flat web (20) is extracted.

Description

Technical Field

[0001] This invention relates to a method for manufacturing filter strips for the tobacco processing industry, the filter strips comprising filter material made of nonwoven fabric, wherein a flat strip made of nonwoven fabric is drawn from a nonwoven fabric bale (Vliesballen) by means of a flat strip extraction device and fed into a strip-making machine for the tobacco processing industry, in which the flat strip is conveyed along a longitudinal conveying direction and formed into a filter strip. The invention also relates to a flat strip processing apparatus for the tobacco processing industry, having a flat strip extraction device by means of which flat strips can be extracted or drawn from a nonwoven fabric bale, wherein the nonwoven fabric bale has rows arranged side-by-side, these rows being composed of stacked segments of flat strips, wherein the flat strip has a longitudinal extension and two lateral edges, and wherein the flat strip extraction device has an inlet head disposed above the nonwoven fabric bale.

[0002] Finally, the present invention relates to a filter manufacturing machine for the tobacco processing industry. Background Technology

[0003] When processing nonwoven fabric into filter rods, particularly cigarette filter rods, one can extract a flat strip of nonwoven fabric from a roll or, alternatively, from a nonwoven fabric package. In the nonwoven fabric package (hereinafter referred to as the nonwoven bag), the flat strip of nonwoven fabric is arranged in a meandering pattern. Preferably, segments of the flat strip are arranged in a meandering, stacked vertically in a row, wherein, preferably, the bottom end of the flat strip in this row is connected to the top end of the adjacent row. Therefore, it is preferable to have multiple rows in the nonwoven bag, wherein, in each row, preferred multiple segments of the flat strip are arranged in a meandering, stacked vertically.

[0004] Preferably, the flat sides of the flat sheet are substantially completely overlapped or completely overlapped with each other.

[0005] When extracting flat fabric from a nonwoven fabric package, impacts may occur at the ends of the flat fabric sections in the corresponding rows, i.e., where the flat fabric has a 180° bend, during flat fabric transport or extraction. Furthermore, different tensions may occur within the flat fabric when extracting it from row to row.

[0006] EP 2 414 065 B1 discloses the manufacture of filter cigarettes from nonwoven fabrics, wherein the filter material comprises a fiber layer made of pulp fibers and is subjected to a pressing process.

[0007] Within the scope of this invention, flat webs made of nonwoven fabric particularly comprise a fiber layer composed of pulp fibers, which preferably has another layer on at least one flat side, wherein the pulp fibers of the fiber layer are preferably locally interconnected in the pressed areas by pressing and compaction. The pulp fibers are preferably interconnected in the nonwoven fabric.

[0008] Preferably, the nonwoven fabric is a nonwoven material. Within the scope of the invention, the nonwoven fabric is in particular not cellulose acetate tow or filter tow. Preferably, the nonwoven fabric has two closed flat sides or is configured as a closed width. Within the scope of the invention, "closed" should be understood in particular as having no holes or openings.

[0009] The filter material referred to herein as nonwoven fabric comprises a natural material (preferably cellulose or pulp) as its main component, which exists essentially in the form of irregularly arranged fibers. Cellulose fibers are preferably used, existing in the form of a nonwoven fabric, particularly as an air-laid nonwoven fabric. Nonwoven fabrics belong to the category of textile composite materials. They involve flexible, porous planar structures manufactured through the entanglement and / or cohesive and / or adhesive bonding of fibers. The nonwoven fabric, or nonwoven material, is a loose material composed of fibers, the bonding strength of which is typically provided by the adhesion of the fibers themselves. When necessary, the nonwoven fabric can be reinforced, wherein, for the application in this invention, mechanical reinforcement without the use of adhesives is preferred.

[0010] The fiber length of the fibers in the nonwoven fabric is preferably <1 meter, especially <10 centimeters, and especially <2.5 centimeters.

[0011] Preferably, the nonwoven fabric is biodegradable, meaning that its components are decomposed by microorganisms under aerobic conditions into carbon dioxide, water, and salts of other elements present (mineralization) to form new biomass, or under anaerobic conditions into carbon dioxide, methane, mineral salts, and new biomass. Preferably, the material conforms to European standard EN 13432. Summary of the Invention

[0012] The objective of this invention is to achieve the highest possible filter quality when manufacturing filter tips from a flat web made of nonwoven fabric, and in particular to achieve the most uniform web tension during extraction, and thus to achieve uniform conveying of the flat web for use in manufacturing filter tips strips or rod-shaped filter tips.

[0013] This task is addressed by a method for manufacturing filter strips for the tobacco processing industry, the filter strip comprising filter material made of nonwoven fabric, wherein a flat strip made of nonwoven fabric is extracted from a nonwoven fabric bale by means of a flat strip extraction device and fed into a strip-making machine for the tobacco processing industry, in which the flat strip is conveyed along the longitudinal axis and formed into a filter strip. An improvement of the method is that tension fluctuations in the flat strip are reduced between the flat strip extraction device and the nonwoven fabric bale by means of a tension balancing device, and / or the position of the flat strip extraction device relative to the flat strip to be extracted from the nonwoven fabric bale is followed or adjusted, and / or the flat strip is flattened by means of a flattening device.

[0014] According to the method of the present invention, a flat sheet made of nonwoven fabric can be fed at a relatively constant tension to a tobacco processing machine to manufacture filter strips. Within the scope of the present invention, the longitudinal conveying direction is relative to the longitudinal axis of the formed filter strip.

[0015] The nonwoven fabric can be, for example, McAirlaid's nonwoven fabric, such as SuperCore® T-060-S. This nonwoven fabric is preferably made of cellulose, particularly preferably 100% cellulose. The basis weight is particularly 60 g / m². The tensile strength in the dry state is particularly 0.5 kN / m. The tensile strength in the wet state is preferably 0.12 kN / m. The elongation in the dry state is 20%. The elongation in the wet state is 11%. The density is 103 kg / m³, and the strength is 50 nm. Other nonwoven fabrics can also be used, such as Green Butts 30 gsm or 40 gsm, or SharpCell Oy ST-047-DIA, or Wattens SP3942. Nonwoven fabrics from Wattens SP 3942 or Papierfabrik Wattens GmbH & Co. KG, for example, have a weight of 35 g / m², a single-layer thickness of 92 microns, a tensile strength of at least 10 N / 15 mm, and a breathability of 4,000 CU. Alternatively, Papierfabrik Wattens GmbH & Co. KG's nonwoven fabric WAT 45 GSM HYDRO can be used, which has a weight of 45 g / m², a single-layer thickness of 270 microns, a tensile density of 17 N / 15 mm, and a breathability >35,000 CU.

[0016] Leveling devices are specifically designed for leveling folds or uneven areas arranged transversely in a flat surface. Leveling devices may include or have pressure rolls, pairs of pressure rolls, hot presses, and / or hot steam.

[0017] Preferably, the flat sheet is crimped in the longitudinal direction.

[0018] Tension fluctuations are preferably reduced mechanically and / or pneumatically.

[0019] To mechanically reduce tension fluctuations, traction roller pairs or brake roller pairs are preferably provided through which the flat web runs. A tänzer mechanism can also be provided to compensate for tension fluctuations. This tänzer mechanism, for example, has rollers, paddles, and / or roller pairs that are spring-loaded, and the flat web runs on them. Tänzer mechanisms are known, for example, from WO 2019 / 211157 A1. The guide rollers in that document can be replaced by traction roller pairs or pressure roller pairs to provide a tänzer mechanism in this invention.

[0020] Alternatively or supplementarily, the compressed air flow (Druckluftzug) can be directed toward the flat web to reduce tension fluctuations that may occur when drawing the flat web from the roll.

[0021] Two pairs of traction rollers can also be used, which generate different traction tensions, especially in flat webs. With the preferred use of at least one pair of traction rollers and / or at least one pair of brake rollers, a pre-set tension can be effectively generated in the flat web, thereby reducing tension fluctuations.

[0022] Preferably, the inlet head of the flat fabric extraction device is positioned above the nonwoven fabric bundle, wherein the lateral position of the flat fabric edge relative to the inlet head during extraction from the nonwoven fabric bundle remains constant from one flat fabric row to the next. This allows the flat fabric to be extracted from the row of flat fabrics substantially independently of the row from which it originates, using approximately the same force. Preferably, the inlet head of the flat fabric extraction device is laterally swung or moved. This ensures that the inlet head is always positioned above the row of flat fabrics from which the flat fabric is extracted, or more precisely, as vertically as possible directly above that row.

[0023] Preferably, the nonwoven fabric bundle moves laterally. This ensures that, during the transition from one flat section of the nonwoven fabric bundle to the next, the bundle moves laterally such that the inlet head of the flat section extraction device remains positioned above, or more precisely, vertically directly above, the flat section to be extracted, with little or no lateral offset. This generates minimal additional lateral tension, allowing the flat section to be extracted with minimal tension fluctuations. In particular, this avoids unintended twisting that could occur due to the oscillation of the inlet head within the flat section.

[0024] To prevent the flat sections of the nonwoven fabric package from tipping over, it is preferably stipulated that the nonwoven fabric package, especially after a predetermined number of flat sections have been removed, is tilted transversely to the conveying direction around a particularly horizontal axis. Here, this axis is preferably parallel to the conveying direction of the filter strips, or parallel to the segments of the flat sections in the corresponding flat sections of the nonwoven fabric package.

[0025] The task is also solved by a flat fabric processing apparatus for the tobacco processing industry, which has a flat fabric extraction device by means of which flat fabrics can be extracted from or removed from a nonwoven fabric package, wherein the nonwoven fabric package has rows arranged side by side, which are composed of stacked segments of flat fabrics, wherein the flat fabric has a longitudinal extension and two lateral edges, wherein the flat fabric extraction device has an inlet head arranged above the nonwoven fabric package, and the improvement of the flat fabric processing apparatus is that a tension balancing device is provided between the inlet head and the nonwoven fabric package, and / or a device is provided by means of which the relative position of the inlet head with respect to the lateral edges of the segments of the flat fabric from which the flat fabrics are extracted is changed and / or a leveling device is provided, which is constructed and provided for leveling the flat fabric after it has been extracted from the nonwoven fabric package.

[0026] The flat fabric processing apparatus according to the invention allows for the extraction of flat fabric from a nonwoven fabric package with uniform force or uniform fabric tension, enabling the flat fabric to be conveyed to the sizing machine with uniform traction. By uniformly conveying the flat fabric to the sizing machine, very high-quality filter tips can be manufactured.

[0027] Preferably, the tension equalization device is configured and arranged to mechanically and / or pneumatically reduce tension fluctuations in a flat web.

[0028] Preferably, in order to reduce tension fluctuations, a traction roller pair or a brake roller pair is provided through which the flat web runs, and / or a device is provided that is configured to direct a compressed air jet toward the flat web.

[0029] To transition from one stack of flat sheet layers to the next without significant traction fluctuations, the inlet head of the flat sheet extraction device is preferably laterally swung or moved, or is laterally swung or movable. Here, the inlet head is swung or moved above one flat sheet layer and above the next. Thus, by preferably adjusting the position of the flat sheet to be extracted relative to the extraction device or its inlet head, the flat sheet can be removed with uniform sheet tension. When, for example, the inlet head of the flat sheet extraction device is swung, directional adjustments to reach the strip machine can be achieved, for example, only through a short twisting section.

[0030] Preferably, two rollers or pins are provided, arranged substantially perpendicular to the flat web and positioned above the nonwoven fabric bundle and below the inlet head, to allow for pre-orientation of the flat web during extraction. For this purpose, the flat web is preferably guided between these rollers or pins.

[0031] Preferably, a transport device is provided, which is constructed and configured to cause the nonwoven fabric package to move laterally or move. This is preferably automatic. For example, the transport device may have a conveyor belt on which the nonwoven fabric package is placed, and by means of it, the nonwoven fabric package can be moved or moved laterally to the longitudinal extension of the flat web or laterally to the flat web stacked on the flat web.

[0032] Within the scope of this invention, a flat section may also be referred to as a flat layer.

[0033] Preferably, a sensor is provided that detects that the last segment or last sheet or layer of the flat fabric is extracted from a row or a row of flat fabric sheets of the nonwoven bag, thereby generating a control signal for laterally swinging or moving the inlet head and / or for laterally moving or moving the nonwoven bag.

[0034] To prevent the flat fabric rolls from tipping over, a tilting device is preferably provided, by which the nonwoven fabric bundle can be tilted or tilted at a preset angle. This tilting preferably occurs about a rotation axis arranged in the longitudinal direction of the flat fabric or the flat fabric rolls. The tilting device preferably includes a nonwoven fabric bundle support device that is rotatably or tiltably supported on the rotation axis. The rotation axis can be constructed as one or more support elements arranged below the nonwoven fabric bundle support device along the rotation axis. For example, a rod can be arranged below the nonwoven fabric bundle support device. The rotation axis is preferably arranged asymmetrically, such that when the nonwoven fabric bundle is fully loaded, gravity causes the nonwoven fabric bundle support device to rest on the ground on one side (from which the flat fabric is first removed), and when the flat fabric is removed to a certain extent, i.e., when a preset number of flat fabric rolls are removed, the nonwoven fabric bundle support device swings to the other side and rests on the ground on the opposite side.

[0035] According to the present invention, a filter tip manufacturing machine is provided, which includes a flattening processing device according to the present invention, wherein the filter tip manufacturing machine further includes a tobacco processing machine, wherein the flattening processing device is arranged upstream of the tobacco processing machine.

[0036] To manufacture nonwoven pouches, it can be stipulated that flat strips are removed or cut from a roll on which nonwoven material is wound, and these flat strips are then converted into pouches made of nonwoven material. Here, the flat strips made of nonwoven material can be placed in rows of flat strips, with multiple rows subsequently forming nonwoven pouches for further processing. In this case, when manufacturing filter rods or filter strips in the tobacco processing industry, the double-roll unwinder and buffer can be eliminated. Pouches made of nonwoven material or paper should be as crease-free as possible at the turning points of the strips, as creases can manifest as unevenness in the filter, thus leading to increased tensile resistance or poor ellipticity. Compared to using rolls, using nonwoven pouches eliminates the speed reduction when changing rolls. To establish a transition from one pouch to the next, the operator has sufficient time to connect the end of one pouch to the beginning of a new pouch, thus eliminating the need to reduce manufacturing speed during transitions in filter strip manufacturing.

[0037] Preferably, a leveling device is provided, which is arranged in or connected upstream of the flattening fabric processing device. The leveling device may include a humidification device and / or a heating device, and preferably includes a mechanical device that applies pressure to the flattened fabric during transport. Alternatively or supplementarily, compressed air, such as hot air or heated compressed air, may be used to level any wrinkles or unevenness that may exist in the flattened fabric. Preferably, the leveling device is arranged directly after the tension equalization device, or is part of the tension equalization device.

[0038] The description of embodiments according to the invention, together with the claims and appendices, is provided below. Figure 1 This allows for the deriving of other features of the invention. Embodiments of the invention can satisfy individual features or combinations of multiple features. Attached Figure Description

[0039] The invention will now be described with reference to the accompanying drawings and embodiments, without limiting the overall inventive concept, wherein all specific details of the invention not elaborated herein are clearly referred to in the drawings. Wherein: Figure 1 The diagram schematically illustrates a flat-format processing apparatus according to the invention, which is connected upstream of a strip mill in the tobacco processing industry. Figure 2 A portion of the flat panel processing unit is shown in a schematic three-dimensional view. Figure 3 A portion of the flat-format processing unit is schematically shown in a top view. Figure 4 A top view schematically illustrates a flat-width processing device with a transport mechanism for non-woven fabric packages. Figure 5 A top view schematically illustrates one embodiment of storing non-woven fabric bags, and Figure 6 The functionality of the nonwoven bag operating device is shown in a side view in the schematic illustration. Detailed Implementation

[0040] Within the scope of this invention, features indicated by "especially" or "preferred" should be understood as optional features.

[0041] In the accompanying drawings, the same or similar elements and / or parts are given the same reference numerals, thus eliminating the need for reintroduction.

[0042] Figure 1A schematic view of a flat fabric processing apparatus 14 is shown. Downstream of this apparatus, along the conveying direction 37 of the flat fabric made of nonwoven material, a strip forming machine 10 is connected, which will transform the nonwoven material or flat fabric into strips. A nonwoven fabric bundle 15 is arranged on a tray 31, from which flat fabric strips 20 made of nonwoven material are extracted by means of a flat fabric extraction device 16. The flat fabric extraction device 16 has an arm 19, at the end of which an inlet head 17 is provided. The nonwoven fabric bundle 15 comprises a plurality of flat fabric rows 30 in which the flat fabric strips 20 are stacked vertically (as shown in subsequent figures). Here, the bottom layer of the flat fabric strips in one flat fabric row is connected to the top layer of the flat fabric strips in the adjacent flat fabric row. Thus, the flat fabric strips in the nonwoven fabric bundle are continuously stacked in the flat fabric rows. In this embodiment, not shown in detail here, the flat strip 30 is arranged along the conveying direction 37.

[0043] exist Figure 1 In the flat fabric 20, the flat fabric sheets 20 are stacked from left to right in the flat fabric sheet row 30, and each sheet is rotated 180° at its ends. This may cause tension fluctuations during extraction. To reduce these tension fluctuations, a tension balancing device 18 is provided between the inlet head 17 and the nonwoven fabric bundle 15. The tension balancing device 18 may have a pair of traction rollers that can be set to a preset traction tension by a traction tension setting device (which is often also called a jogging mechanism). This traction tension may be different from, but the same as, the traction tension that can be set by the flat fabric sheet processing device. Alternatively, and in Figure 1 A leveling device can be installed at the position of the tension balancing device 18, or the leveling device can be integrated into the tension balancing device.

[0044] The flat fabric processing apparatus 14 may also be equipped with a crimping device, by means of which the pleats are crimped along the longitudinal extension 39 or the conveying direction 37 of the flat fabric, so as to subsequently produce filter strips or filter rods with defined tensile resistance in the strip machine 10. The crimping device may also be connected downstream of the flat fabric processing apparatus 14 in the conveying direction of the flat fabric 37.

[0045] In the conveying direction, the flatbed processing unit 14 is followed by a material processing unit 13 and another material processing unit 12, and then a strip forming unit 11 is connected in the conveying direction. Material processing units 12 and 13 can be what the applicant calls "Flexport" material processing units. Very different processing steps can be performed here with great flexibility. For example, a pressing device can be provided in material processing unit 13, or fragrances can be added to the flatbed, or, for example, fragrance-infused threads can be added. Activated carbon can also be filled into the flatbed or similar operations can be performed.

[0046] The manufacture of filter tips in the tobacco processing industry is carried out in a strip machine 10 by a strip method as is conventional. In this regard, reference is made to conventional prior art, such as the aforementioned European patent application.

[0047] Figure 2 A schematic three-dimensional view of a portion of the flat fabric processing apparatus 10 is shown. The flat fabric 20 is drawn from the flat fabric row 30, passes through or through a positioning device 24, which may include two rollers or two bars through which the flat fabric 20 is guided. The flat fabric 20 then reaches an inlet head 17, which has a guide roller 21. Through an arm 19, the flat fabric 20 reaches another guide roller 22 and from there enters the housing of the flat fabric processing apparatus, shown in gray, where, for example, a pair of traction rollers may be arranged to convey the flat fabric 20 in the conveying direction. The arm 19 can be swung by a swing motion 23 to allow the inlet head 17 to move laterally above the flat fabric row 30 of the nonwoven fabric bundle 15. This... Figure 3 It is shown in a better way.

[0048] exist Figure 3 There, a portion of the flat panel processing device 14 is shown in a schematic top view. Here, the swing arm... Figure 3 The diagram shows the arrangement at the top. Thus, the flat panel 20 is pulled out from the outermost flat panel row 30 of the nonwoven fabric bundle 15. Once this row is completely removed, it is... Figure 3 Flat section 20 is extracted from the lower flat section 30. At this moment, the inlet head 17, along with the steering roller 21, ... Figure 3 It swings slightly further downward, or more precisely, it swings slightly further downward with the swing motion 23, but only to such an extent that the turning roller 21 or the inlet head 17 is above the next flat row 30.

[0049] In such Figure 3 In the swing position shown, a twist 25 is generated in the flat web 20 between the positioning device 24 and the guide roller 21. Furthermore, a twist 26 is generated between the roller 21 and the inlet for subsequent transport into the flat web extraction device 14, in the opposite direction to the twist 25.

[0050] exist Figure 3 The image also shows the longitudinal extension 29 of the flat sheet 20.

[0051] To avoid twisting portions 25 and 26, the arm 19 of the swinging flat fabric processing device 14 can be replaced, allowing the nonwoven fabric bag 15 to move laterally relative to the longitudinal extension 29 of the flat fabric 20 on the nonwoven fabric bag. This is in Figure 4The diagram is shown in a schematic top view. It shows the complete nonwoven fabric package 15 located below the inlet head 17 of the flat fabric extraction device 14, and the transport direction 32.

[0052] The non-woven fabric package 15 is arranged on the pallet 31 and moves along the transport direction 32 on the transport device 36. Figure 4 In this process, the movement proceeds from bottom to top, and therefore the transverse axis is oriented in the direction of conveying the flat strip in the strip machine 10 connected to the flat strip processing device 14, or more precisely, it proceeds in a horizontal transverse direction.

[0053] The nonwoven fabric bundle 15 is transported transversely such that the inlet head 17 is positioned above the first flat fabric row 30. The flat fabric 20 is then completely removed from this flat fabric row 30, after which the nonwoven fabric bundle 15 is continued to be transported or moved the width of one flat fabric row 30 so that it can subsequently be completely removed from there. In this embodiment, this occurs five times, as five flat fabric rows 30 are schematically provided as an example. Subsequently, the nonwoven fabric bundle 15 is removed, and the tray 31 is transported along the transport direction 32. This avoids fluctuating path lengths and fluctuating fabric edges, and thus allows for a largely uniform removal of the flat fabric.

[0054] exist Figure 4 The package 15 shown below is depicted in the loading position. The middle position relates to the working position, while the position of the tray 31 shown above is the unloading position.

[0055] The non-woven fabric package 15 is constructed in series. Preferably, a sensor 40 is provided (see...). Figure 5 The sensor identifies when the flat fabric strip 30 is emptied, generating a signal that causes the controller to drive the nonwoven fabric bundle 15 to continue moving. This achieves a constant position of the flat fabric strip 30 relative to the inlet head 17 of the flat fabric processing device 14, thus ensuring continuous production.

[0056] Figure 5 A schematic top view of a nonwoven fabric bag 15 is shown, which is arranged on a nonwoven fabric bag operating device 41. The nonwoven fabric bag operating device 41 includes a support and a rotation axis 33, on which a tray with the nonwoven fabric bag can be placed.

[0057] exist Figure 6 The functionality of the nonwoven fabric bag operating device 41 can be better illustrated schematically in the side view. In this case, the nonwoven fabric bag 15 has four flat fabric rows 30, which are arranged in... Figure 6 The center extends perpendicular to the drawing plane. The flat sheet 30 is formed by stacking or overlapping flat sheets 20, which should be extracted as previously described.

[0058] The rotation axis 33 represents the support portion of the nonwoven fabric bag operating device 41 on the ground 34. This rotation axis can be formed by a rod with a circular cross-section, or as a pyramid arranged eccentrically in the flat fabric row direction. The degree of eccentricity is determined relative to the transverse axis of the longitudinal extension 29 of the flat fabric.

[0059] exist Figure 6 On the left side, a fully loaded nonwoven fabric package 15 is shown. In this case, the weight on the left side of the rotation axis 33 is greater than the weight on the right side. Therefore, the support leg 35 and the rotation axis 33 rest on the ground 34. The support leg 35 on the right side is suspended in the air. Once the center of gravity shifts due to the maximum removal of the flat fabric 20 from the nonwoven fabric package 15, causing the weight on the right side of the rotation axis 33 to be greater than the other side, Figure 6 The non-woven fabric bag operating device 41 will tilt to the right. This is in Figure 6 The right side is shown in the diagram. In this case, the rotation axis 33 and the right-hand support leg 35 rest on the ground. This prevents the flat sheets 20 from tipping over when they are pulled out from the flat sheet 30 at a slight leftward tilt, in the case where only two flat sheet 30s or one flat sheet 30 remain.

[0060] In addition, a wall 42 is provided to prevent Figure 6 At least one flat section of the paper is flipped to the right.

[0061] exist Figure 6 The diagram also schematically shows a sensor 40, which can detect when the flat sheet is completely removed.

[0062] All mentioned features, as well as those that can be derived individually from the accompanying drawings and those disclosed in combination with other features, are considered essential to the invention individually and in combination. Embodiments according to the invention can be satisfied through individual features or combinations of features.

[0063] List of reference numerals in the attached diagram: 10 machines 11 molding units 12 Material Processing Unit 13 Material Processing Unit 14 Flat Format Processing Device 15 Non-woven fabric bags 16 Flat-format extraction device 17 Entrance Head 18. Tension balancing device 19 arms 20 Flat format 21. Steering rollers 22. Steering rollers 23. Swinging motion 24 Positioning device 25 Twisted section 26 Twisted section 27 First lateral edge 28 Second lateral edge 29. Longitudinal extension 30 flat layout 31 pallets 32. Transportation Direction 33. Axis of rotation 34 Ground 35 legs 36. Transport equipment 37 Conveying direction 40 sensors 41 Non-woven fabric support device 42 walls.

Claims

1. A method for manufacturing filter strips for the tobacco processing industry, the filter strip comprising a filter material made of nonwoven fabric, wherein, A flat strip (20) made of nonwoven fabric is extracted from a nonwoven bundle (15) by means of a flat strip extraction device (16) and fed into a tobacco processing machine (10), in which the flat strip (20) is conveyed along the longitudinal axis and formed into a filter strip. The flat strip (20) is characterized by tension balancing device (18) reducing tension fluctuations in the flat strip (20) between the flat strip extraction device (16) and the nonwoven bundle (15), and / or the position of the flat strip extraction device (16) relative to the flat strip (20) to be extracted from the nonwoven bundle (15) is moved or adjusted, and / or the flat strip (20) is flattened by means of a flattening device.

2. The method according to claim 1, characterized in that, The tension fluctuations are reduced mechanically and / or pneumatically.

3. The method according to claim 2, characterized in that, To reduce the tension fluctuations, a traction roller pair or a braking roller pair is provided through which the flat web (20) runs, and / or a compressed air flow is directed toward the flat web (20).

4. The method according to any one of claims 1 to 3, characterized in that, The inlet head (17) of the flat strip extraction device (16) is arranged above the nonwoven fabric package (15), wherein the relative lateral position of the flat strip edges (27, 28) relative to the inlet head (17) when the flat strip (20) is extracted from the nonwoven fabric package (15) is kept constant from one flat strip row (30) of the nonwoven fabric package (15) to the next flat strip row (30) of the nonwoven fabric package (15).

5. The method according to claim 4, characterized in that, The inlet head (17) of the flat-format extraction device (16) is swung or moved laterally.

6. The method according to claim 4 or 5, characterized in that, The nonwoven bag (15) is moved laterally.

7. The method according to any one of claims 1 to 6, characterized in that, The nonwoven fabric bundle (15) is tilted transversely to the conveying direction around a particularly horizontal axis (33) after a predetermined number of flat strips (30) are removed.

8. A flat fabric processing apparatus (14) for tobacco processing industry, comprising a flat fabric extraction device (16) by means of which a flat fabric (20) can be extracted or removed from a nonwoven fabric package (15), wherein, The nonwoven fabric package (15) has rows (30) arranged side by side, which are composed of segments of a flat fabric (20) stacked vertically, wherein the flat fabric (20) has a longitudinal extension (29) and two lateral edges (27, 28), wherein the flat fabric extraction device (16) has an inlet head (17) arranged above the nonwoven fabric package (15), characterized in that a tension balancing device (18) is provided between the inlet head (17) and the nonwoven fabric package (15), and / or a device (19, 36) is provided by means of which the lateral edges (27, 28) of the inlet head (17) relative to the segment of the flat fabric (20) can be changed and / or set. The relative position of the segment from the nonwoven bundle (15) from which the flat strip (20) is extracted, and / or provided with a flattening device that is constructed and provided for flattening the flat strip (20) after extraction from the nonwoven bundle (15).

9. The flat surface processing device (14) according to claim 8, characterized in that, The tension equalization device (18) is configured and arranged to mechanically and / or pneumatically reduce tension fluctuations in the flat surface (20).

10. The flat surface processing device (14) according to claim 9, characterized in that, To reduce the tension fluctuations, a traction roller pair or a brake roller pair is provided through which the flat web (20) runs, and / or a device is provided that is configured to direct a compressed air jet toward the flat web (20).

11. The flat surface processing apparatus (14) according to any one of claims 8 to 10, characterized in that, The inlet head (17) of the flat-format extraction device (16) is laterally swingable or movable, or can be swingable or moved.

12. The flat surface processing apparatus (14) according to any one of claims 8 to 11, characterized in that, A transport device (36) is provided, which is constructed and configured to allow the nonwoven bag (15) to move laterally or move.

13. The flat surface processing device (14) according to claim 11 or 12, characterized in that, A sensor (40) is provided that detects that the last segment of the flat section (20) has been pulled out from a row (30) of the flat sections (20) in the nonwoven bundle (15), thereby generating a control signal for laterally swinging or moving the inlet head (17) and / or for laterally moving or moving the nonwoven bundle (15).

14. The flat surface processing apparatus (14) according to any one of claims 8 to 13, characterized in that, The nonwoven bag (15) is provided with tilting devices (33, 41), by means of which the nonwoven bag (15) can be tilted or tilted at a preset angle.

15. A filter tip manufacturing machine comprising a flattening processing device according to any one of claims 8 to 14 and a strip machine (10) for the tobacco processing industry, wherein, The flat sheet processing device (14) is arranged upstream of the strip machine (10).

16. The filter tip manufacturing machine according to claim 15, characterized in that, The flat surface processing device (14) includes a leveling device, or the leveling device is connected upstream of the flat surface processing device (14).

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