WO2024002721A1 - Machine et procédé de l'industrie du traitement du tabac pour la production d'une tige ou d'un filtre en papier, et utilisation de la machine - Google Patents

Machine et procédé de l'industrie du traitement du tabac pour la production d'une tige ou d'un filtre en papier, et utilisation de la machine Download PDF

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Publication number
WO2024002721A1
WO2024002721A1 PCT/EP2023/066240 EP2023066240W WO2024002721A1 WO 2024002721 A1 WO2024002721 A1 WO 2024002721A1 EP 2023066240 W EP2023066240 W EP 2023066240W WO 2024002721 A1 WO2024002721 A1 WO 2024002721A1
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WO
WIPO (PCT)
Prior art keywords
flat web
additive
nozzle
wide slot
web
Prior art date
Application number
PCT/EP2023/066240
Other languages
German (de)
English (en)
Inventor
Julian Kuschel
Stefan Seyer
Andreas Tönsmann
Original Assignee
Körber Technologies Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Körber Technologies Gmbh filed Critical Körber Technologies Gmbh
Publication of WO2024002721A1 publication Critical patent/WO2024002721A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/1807—Forming the rod with compressing means, e.g. garniture
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A24D3/022—Applying additives to filter materials with liquid additives, e.g. application of plasticisers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A24D3/0233—Filter rod forming processes by means of a garniture

Definitions

  • the invention relates to a machine in the tobacco processing industry for producing a strand from a flat web, comprising the following devices arranged one behind the other in a material flow direction: a flat web providing device for providing the flat web, a flat web structuring device, in particular a crimping device, with which a structure can be introduced into the flat web , through which the flat web has an at least partially changed cross-section when spread out, a flat web pre-forming device with which the flat web can be converted into a pre-formed state, and a strand forming device with which the strand can be produced from the pre-formed flat web.
  • the invention also relates to the use of such a machine.
  • the invention further relates to a method for producing paper filters using a machine in the tobacco processing industry for producing a strand from a flat web, the machine having the following devices arranged one behind the other in a material flow direction comprises: a flat web providing device, which provides the flat web, a flat web structuring device, in particular a crimping device, with which a structure is introduced into the flat web, through which the flat web receives an at least partially changed cross-section when spread out, a flat web pre-forming device, with which the flat web is converted into a preformed state is transferred, and a strand forming device with which the strand is produced from the preformed flat web.
  • a flat web providing device which provides the flat web
  • a flat web structuring device in particular a crimping device, with which a structure is introduced into the flat web, through which the flat web receives an at least partially changed cross-section when spread out
  • a flat web pre-forming device with which the flat web is converted into a preformed state is transferred
  • Rod-shaped articles for the tobacco processing industry can be produced from such a strand.
  • Further application examples in which a rod-shaped article for the tobacco processing industry is made from a strand include articles made from a flat sheet of reconstituted tobacco material (RECON) or from PLA film.
  • rod-shaped segments can be used in so-called HNB articles (for “Heat-Not-Burn”), which are also referred to as THP articles (for “Tobacco-Heated-Product”).
  • HNB articles for “Heat-Not-Burn”
  • THP articles for “Tobacco-Heated-Product”.
  • paper filters or paper filter segments can be made from it, for example. Compared to conventional filter segments, these are advantageously biodegradable.
  • An essential process step in processing a flat web into, for example, one of the above-mentioned rod-shaped articles is the transformation of the flat web from a flat, spread-out state into a folded or gathered intermediate state and further into a strand with a substantially round cross-section.
  • the flat web is gathered together transversely to its longitudinal direction using a deformation unit and then formed into a strand in a format unit, which can then be wrapped.
  • the filter material with an additive, for example a flavoring agent.
  • an additive for example a flavoring agent.
  • such an additive is applied to the flat web in the flat, spread-out state.
  • such an additive can also be applied to the web gathered together in a direction transverse to its longitudinal direction.
  • a device with which an additive can be applied to conventional filter material consisting of fibers is known, for example, from EP 0 913 100 A2.
  • a powdery material with a very small particle size is pneumatically sprayed onto the fiber material using a solid injector nozzle.
  • a machine in the tobacco processing industry for producing a strand from a flat web, comprising the following devices arranged one behind the other in a material flow direction: a flat web providing device for providing the flat web, a flat web structuring device, in particular a crimping device, with which a structure can be introduced into the flat web, through which the flat web receives a cross-section that is changed at least in sections when spread out, a flat web pre-forming device, with which the flat web can be converted into a preformed state, and a strand forming device with which the strand can be produced from the preformed flat web, this machine being developed in that a transport roller is arranged between the flat web structuring device and the flat web preforming device and the flat web in the material flow direction by means and/or is guided along the transport roller, and the transport roller is set up and designed for guiding the spread flat web and/or for adjusting a web tension of the flat web on a transport route between the flat web structuring device and the flat web preforming device, and
  • the wide slot nozzle included in the application device advantageously allows the additive to be applied quickly and efficiently and, if desired, over the entire width of the flat web, ie not just locally, for example along application tracks. This makes it possible to apply a sufficiently large amount of the additive homogeneously to the flat web, even for high process speeds.
  • the wide slot nozzle in particular includes a nozzle gap through which the additive emerges. A longitudinal direction of extension of the nozzle gap is oriented at least approximately perpendicular to a transport direction of the flat web. Furthermore, in particular, the wide slot nozzle has a nozzle gap which has a longitudinal extension direction which at least approximately corresponds to the width of the flat web.
  • the length of the nozzle gap viewed in its longitudinal direction, is chosen to be slightly smaller than the width of the flat web, it can be prevented that the additive passes the flat web, for example into a collecting area provided for this purpose. There is no so-called “overspray”, which inevitably causes material to be lost. At least the overspray is significantly reduced. If the length of the nozzle gap is chosen to be equal to or even slightly larger than the width of the flat web, a certain amount of overspray is accepted. This makes it possible to wet the flat web with the additive without borders. Due to the edgeless wetting of the flat web, a particularly large amount of additive can be applied to the flat web.
  • a wide slot nozzle also allows the flexible application of different materials, which can be used as additives.
  • the material of the additive ranges from a liquid to highly viscous and possibly solid materials at room temperature. These can be liquids, solids, mixtures of substances, for example dispersions, suspensions, gels or the like.
  • the machine in the tobacco processing industry also includes a transport roller which is set up to guide the flat web and/or to maintain, control and/or regulate web tension of the flat web.
  • This measure can advantageously improve the application of the additive using the wide slot nozzle. If the position and web tension of the flat web is kept within specified limit ranges, this improves the application of the additive that is possible using the wide slot nozzle.
  • the two measures mentioned above ie the effect of the transport roller on the one hand and the function of the wide slot nozzle with regard to the application of the additive on the other hand, work together in a synergistic manner.
  • the application device comprises a compressed air-assisted wide slot nozzle.
  • the wide slot nozzle achieves a homogeneous application of the additive by evenly distributing it transversely to the longitudinal direction of the flat web.
  • the application of the additive can be controlled and/or regulated even more precisely.
  • an application quantity and an application speed can be adapted to the type of material of the flat web, for example its porosity or air permeability. Adjusting the application of the additive enables the tobacco processing industry to achieve high process speeds with the machine.
  • the wide slot nozzle comprises a nozzle gap provided for the additive and at least one air gap running at least approximately parallel to this on one side of the nozzle gap, in particular a pair of air gaps running at least approximately parallel to it on both sides of the nozzle gap includes.
  • the at least one air gap is preferably aligned parallel to the nozzle gap of the wide slot nozzle. This applies both to a pair of air gaps arranged on both sides of the nozzle gap and to a single air gap which is arranged on one side of the nozzle gap.
  • the air gap has a length, viewed in its longitudinal direction, which is less than or equal to the length of the nozzle gap. aims in the same direction, is. According to a further exemplary embodiment, it is also provided that the air gap has a length which is greater than the length of the nozzle gap. In this way, the additive emerging from the nozzle gap, provided that two air gaps arranged on both sides of the nozzle gap are provided, can be completely enclosed in a jacket air flow, so that overspray can be further reduced.
  • the machine for the tobacco processing industry is developed in that the wide slot nozzle comprises a base body provided with a heater, the base body in particular comprising a storage chamber for the additive that communicates fluidly with the nozzle gap.
  • a heatable wide slot die allows the appropriate viscosity range of the additive to be set, so that an optimal application of the additive to the flat web is possible.
  • the heatability of the wide slot nozzle makes it possible to influence this process parameter. This is particularly advantageous if the viscosity cannot be adjusted using suitable additives that are added to the additive.
  • the additive is supplied to the machine of the tobacco processing industry in the preheated state.
  • an additive heating device is designed as part of the machine in the tobacco processing industry. The additive is taken, for example, from a storage container, fed to the additive heating device and brought to the desired temperature. The heating of the wide slot nozzle then ensures that the additive can be applied at the desired temperature and thus with the desired viscosity.
  • the machine for the tobacco processing industry is developed in such a way that the nozzle gap and/or the at least one air gap are adjustable.
  • the adjustability can be achieved, for example, using suitable intermediate pieces.
  • a length and/or a width of the nozzle gap and/or of the at least one air gap can be or is adjustable.
  • a length of the nozzle gap and a length of the air gap are measured in the direction of their respective longitudinal extension directions.
  • the length of the nozzle gap or air gap often extends at least approximately parallel to a width of the flat web.
  • a width of the nozzle gap or air gap is measured transversely to the width of the flat web, i.e. in the direction of the transport direction of the flat web.
  • the width of the nozzle gap or air gap extends transversely, in particular perpendicularly, to its respective longitudinal extension direction, i.e. transversely to the length of the nozzle gap or air gap. Furthermore, it is particularly provided that a width of the nozzle gap and/or the air gap is between 5 pm and 1 mm (1000 pm). Further In particular, this width is between 10 pm and 500 pm, further in particular between 50 pm and 250 pm, further in particular between 100 pm and 300 pm.
  • the machine in the tobacco processing industry which comprises a compressed air-assisted wide slot nozzle, is developed in such a way that it has a compressed air heater which is set up to provide heated compressed air to the wide slot nozzle.
  • a compressed air heater which is set up to provide heated compressed air to the wide slot nozzle.
  • the machine for the tobacco processing industry is developed in that the wide slot nozzle is designed as a contact wide slot nozzle or as a contactless wide slot nozzle.
  • the contactless wide slot die is arranged in such a way that a distance between the flat web and a nozzle gap of the wide slot die is between 3 mm and 60 mm.
  • a working distance in the specified interval has proven to be advantageous in practice.
  • the mentioned working distance allows a good compromise to be found between low overspray on the one hand and uniform distribution of the additive on the other.
  • the distance mentioned is between 30 mm and 50 mm, and in particular between 35 mm and 45 mm.
  • the machine in the tobacco processing industry comprises a control device which is set up to control and/or regulate the heating present in the base body of the slot nozzle in such a way that the additive is tempered in such a way that its viscosity has a desired value in the stated interval.
  • the viscosity of the additive is in a range between 100 m Pa*s and 1000 m Pa*s, and in particular in an interval between 300 m Pa*s and 600 m Pa*s.
  • the control unit of the machine is set up to adjust, in particular, a temperature of the wide slot die via the heater, so that the additive has the desired viscosity.
  • an application device is arranged between the flat web structuring device of the flat web preforming device, in particular between the flat web structuring device and the transport roller, which is set up to apply an additive, in particular a liquid, to an upper side and an underside of the flat web.
  • the application device is designed in such a way that the flat web can be provided with the additive on both sides.
  • the machine is the Tobacco processing industry further developed in that the flat web preforming device has a molding shoulder or is designed in the form of a molding shoulder, which has a forming section with a contour that extends substantially transversely to the material flow direction and is substantially convex and a tubular section with a substantially transverse to the Forms or has a contour extending in the material flow direction and essentially concavely shaped, wherein in particular the forming section and the tubular section merge into one another along a preferably spatial forming edge, and wherein the forming section and the tubular section of the mold shoulder are arranged relative to one another in such a way that the flat web starts from in the material flow direction the transport roller first comes into contact with the forming section in an at least approximately flat state in a first transport direction and then comes into contact with the tubular section over the forming edge in an at least partially rolled up state in a second transport direction, furthermore the first and the second Transport direction include an angle which is between 71 ° and 120
  • the flat web structuring device is designed in particular to introduce a three-dimensional structure into the flat web. In particular, it is designed to emboss a structure into the flat web.
  • the one introduced into the flat web by the flat web structuring device Structure changes the cross section of the flat web, viewed in a plane that is oriented at least approximately perpendicular to a longitudinal direction of the flat web. In an initial state, i.e. before the flat web enters the flat web structure device, the cross section of the flat web is at least approximately rectangular. This shape is at least locally changed by the deformation process.
  • the deformation can be accompanied by a local reduction in the cross section of the flat web, and the deformation, again viewed in cross section, can cause a local curvature, bulge or similar of the flat web, with an additional local reduction or even a local increase in the material thickness occurring can.
  • the flat web is advantageously guided by means of, over and/or along the transport roller and in this way the web tension of the flat web is kept at a desired value.
  • the flat web can be guided by, over or with the help of the transport roller.
  • the transport roller acts as a guide for the flat web that has been spread out, i.e. not yet gathered or compacted. Transporting the flat web by means of a transport roller prevents a reduction in abrasion on the flat web, in contrast to a solution in which the flat web is deflected over a deflection edge or the like and in this way the web tension is maintained.
  • Such a web guide is particularly advantageous for a flat web that has been provided with an additive. This applies in particular to the case in which the additive is only applied to one side of the flat web. With the help of the flat web preforming device mentioned, the flat web only comes into contact with the flat web preforming device with one of its two sides.
  • the angular ranges mentioned allow the flat web preforming device to be constructed in a particularly compact manner.
  • the shoulder elements can each be adjusted in a linear movement. Furthermore, it is in particular provided that the front shoulder elements are displaceable along front displacement directions, which lie in a plane perpendicular to a longitudinal axial direction of the tubular section and point towards a center of the tubular section, and wherein the rear shoulder elements are displaceable along rear displacement directions and the rear Displacement directions run obliquely to the plane mentioned and intersect at least approximately in a straight line defined by the longitudinal axial direction, this intersection point lying outside the tubular section.
  • the forming edge runs spatially, which means that it does not run completely within a plane.
  • the shoulder elements can be individually and independently adjustable. However, this is not necessarily the case. According to further embodiments, it is provided that the shoulder elements can be adjusted in pairs, for example.
  • a length of the forming edge of the mold shoulder is between 100 mm and 400 mm, in particular between 100 mm and 300 mm, further in particular between 100 mm and 180 mm, or between 180 mm and 300 mm.
  • the tubular portion of the mold shoulder is not necessarily designed in the form of a closed tube.
  • the tubular section does not have a completely closed lateral surface.
  • the tubular section has a groove running along its longitudinal direction.
  • the tubular section is, for example, cylindrical jacket-shaped, but can also be designed to be slightly tapered, for example.
  • the transport roller is a crowned roller and the flat web pre-forming device comprises at least one keyway roller, in particular the keyway roller comprising cheeks forming the keyway, which are coupled to one another by a connecting shaft, whereby on the connecting shaft, in particular centrally between the cheeks, there is a support body whose cross section is larger than the connecting shaft.
  • the transport roller designed as a spherical roller, also serves in particular as a guide for the flat web due to its more or less convex shape.
  • the flat web preforming device comprises a first and a second keyway roller, wherein the first and the second keyway roller are arranged such that the first keyway roller interacts with an underside of the flat web, with which the flat web also over the or is guided along the transport roller, and the second keyway roller interacts with an upper side of the flat web and is in particular arranged downstream of the first keyway roller.
  • the first keyway roller comprises a first support body and the second keyway roller comprises a second support body, wherein, viewed in a cross section which intersects the respective connecting shaft in the middle, an aspect ratio of height to width of the second support body is greater than that of the first support body.
  • the second keyway roller therefore has a support body which is narrower and higher than the support body of the first keyway roller. This supports the transverse gathering of the flat web. This allows the flat web to receive its final shape before it is introduced into the inlet hopper of a format unit.
  • the flat web along the transport roller is advantageously tangential or over a wrap angle greater than zero and / or less than 95 degrees is guided.
  • the flat web contacts the transport roller along a wrap angle that is greater than zero and less than 95 degrees.
  • the transport roller is driven. This is preferably driven to rotate about an axis of rotation.
  • the transport roller is in particular driven in such a way that it rotates at a peripheral speed that is equal to a speed of the material flow or is lower or higher than the speed of the material flow.
  • the machine in the tobacco processing industry allows a flat web to be processed, whereby a web tension of the flat web can also be advantageously adjusted with regard to the desired application of the additive via the transport roller.
  • various additives such as gel, flavor, hot melt, etc. can be applied to the web-shaped material of the flat web.
  • the slot nozzle can be designed to be heatable. This allows the viscosity of the additive to be adjusted, provided it cannot be changed using appropriate additives.
  • Some additives are in solid form at room temperature, for example as granules, or are highly viscous. Such additives cannot be conveyed or applied without being heated. For this reason, the machine in the tobacco processing industry can be equipped with an additive heater. So that the additive can be applied to the flat web with the desired viscosity, it is further provided in particular that the slot die is heatable.
  • the wide slot nozzle can be designed as a contact wide slot nozzle or as a contactless wide slot nozzle.
  • the additive can be processed in a wide viscosity range without excess quantities.
  • the wide slot nozzle receives the additive, keeps it at the desired temperature or heats it to the required application temperature and passes the additive on to the nozzle gap, for example via the storage chamber.
  • a wide slot nozzle enables a homogeneous application of the additive through an even transverse distribution and transfers the additive to the flat web.
  • additives in a wide viscosity range between 100 m Pa*s and 1600 m Pa*s can be advantageously processed. This allows a large process window to be provided for the application of the additive.
  • the contact wide slot die always has mechanical contact with the flat web and also requires a certain pressure force. Adjusting the web tension using the transport roller is therefore particularly advantageous for this application.
  • the wide slot nozzle is designed as a contactless wide slot nozzle.
  • abrasion on the flat web is minimized or completely avoided and no or very little dust is generated.
  • the application of the additive can be supported by compressed air whereby the volume flow of the compressed air can be regulated and/or controlled to match the additive, in particular its viscosity, and/or to match the material of the flat web, for example its porosity or air permeability.
  • the amount of compressed air is always adjusted so that any overspray that occurs due to possible atomization of the additive is kept as low as possible.
  • a compressed air heater can be provided.
  • a method for producing paper filters with a machine in the tobacco processing industry for producing a strand from a flat web comprising the following devices arranged one behind the other in a material flow direction: a flat web providing device, which provides the flat web, a flat web structuring device , in particular a crimping device with which a structure is introduced into the flat web, through which the flat web receives an at least partially changed cross-section in the expanded state, a flat web pre-forming device with which the flat web is converted into a pre-formed state, and a strand forming device with which the preformed flat web, the strand is produced, this method being advantageously developed in that a transport roller is arranged between the flat web structuring device and the flat web preforming device and the flat web is guided in the material flow direction by means of and/or along the transport roller, and the transport roller guides the spread flat web and / or adjusts a web tension of the flat web on a transport route between the flat web structuring device and the flat web pre-forming
  • the process for producing paper filters using a machine in the tobacco processing industry has the same or similar advantages as those already mentioned with regard to the machine itself.
  • the machine in the tobacco processing industry is particularly suitable for producing paper filters, since it is often desired to add an additive, for example a flavor or ingredient, to the paper filter.
  • an additive for example a flavor or ingredient
  • a homogeneous application of the additive can advantageously be achieved, and the amount of additive that can be applied also lies within a wide parameter range.
  • the flat web is a web made of a fleece, a flat web for producing so-called “tissue filters”, or also a paper web, which, in addition to paper, also contains small parts made of PLA, reconstituted tobacco material (recon film). ) or other materials. This advantageously applies to all embodiments.
  • the method is advantageously developed in that the application device comprises a compressed air-assisted wide slot nozzle and the additive is applied to the flat web with compressed air support, with heated compressed air being provided in particular to the wide slot nozzle.
  • the application device itself is heated. This makes it possible to use all media, which are guided through the application device, comprising the wide slot nozzle and any storage chambers or supply channels, can be applied at the desired temperature.
  • the method is developed in that the wide slot die comprises a nozzle gap through which the additive is applied to the flat web and at least on one side of the nozzle gap an air gap which runs at least approximately parallel to this is encompassed by the wide slot die, in particular one Pair of air gaps running at least approximately parallel to the nozzle gap on both sides are included, with compressed air being guided through the at least one air gap for the compressed air-assisted application of the additive.
  • the method is developed in that the nozzle gap and/or the at least one air gap are/is adjusted, in particular a length and/or a width of the nozzle gap and/or the at least one air gap being/is adjusted and wherein furthermore in particular a width of the nozzle gap is between 5 pm and 1 mm, further in particular between 10 pm and 500 pm.
  • the other values for the width of the nozzle gap mentioned with regard to the device can also be used according to an exemplary embodiment with regard to the method.
  • the method is developed in that the wide slot nozzle comprises a base body provided with a heater, the base body comprising a storage chamber for the additive that communicates fluidly with the nozzle gap and the additive is tempered in the storage chamber, in particular the wide slot nozzle with the Heating is heated to a temperature so that the additive has a viscosity that is between 50 m Pa*s and 1600 m Pa*s (milli Pascal second).
  • the additive is brought to the desired temperature or maintained at this so that it is present at the nozzle gap of the slot die with the desired viscosity, which enables optimal application of the additive.
  • the wide slot nozzle is designed as a contact wide slot nozzle and applies the additive to the flat web in a contact process or the wide slot nozzle is designed as a contactless wide slot nozzle and applies the additive to the flat web in a contactless manner, in particular in the case of contactless application the additive is applied to the flat sheet from a distance between 3 mm and 60 mm.
  • the distance is also in particular between 5 mm and 50 mm, further in particular between 10 mm and 30 mm, further in particular between 15 mm and 50 mm, further in particular between 20 mm and 30 mm.
  • the object is further achieved by using a machine according to one or more of the aforementioned embodiments for producing paper filters. It is also envisaged that the machine will be used to produce paper filter segments or other or similar rod-shaped articles for the tobacco processing industry.
  • FIG. 1 shows a schematic view of a machine in the tobacco processing industry for producing a strand from a flat web
  • FIG. 2 is a simplified perspective view of a mold shoulder
  • FIG. 3 is a simplified frontal view of a mold shoulder set to produce a strand with a large cross section
  • Fig. 4 is a simplified front view of a forming shoulder adjusted to produce a small diameter strand compared to the setting shown in Fig. 3;
  • FIG. 6 is a simplified perspective view of part of a machine in the tobacco processing industry, which includes a keyway roller as a pre-forming device,
  • FIG. 7 is a simplified perspective view looking at the top of a flat web gathered with a spline roller
  • Fig. 9 shows a further simplified perspective detailed view of a machine in the tobacco processing industry for production a strand of a flat web, comprising a first and a second keyway roller as a flat web pre-forming device,
  • FIG. 10 is a schematic side view of a detail of a machine in the tobacco processing industry, comprising a mold shoulder and an application device comprising a wide slot nozzle,
  • FIG. 11 shows a schematically simplified side view of the application device, comprising the wide slot nozzle
  • FIG. 12 shows a schematically simplified detailed view of the machine of the tobacco processing industry in the area of the application device, which includes a wide slot nozzle designed as a contact application nozzle and
  • Fig. 13 is a schematically simplified detailed view of a wide slot nozzle, which works contactless and is supported by compressed air.
  • Fig. 1 shows a schematic representation of a machine 2 in the tobacco processing industry.
  • the machine 2 includes a flat web providing device 8 for providing the flat web 4.
  • the flat web 4 is provided on a reel 10, for example.
  • the Flat web supply device 8 can be designed as a reel changer. According to such an exemplary embodiment, it has more than one holder for holding a reel 10 and, for example, a corresponding splicing device, which allows the individual flat webs 4 present on a reel 10 to be connected to one another to form an infinitely long flat web 4.
  • the flat web 4 is, for example, a paper web.
  • the flat web 4 can also be a web made of a fleece, a flat web for producing so-called “tissue filters”, or even a paper web which, in addition to paper, in particular in small proportions, contains small parts made of PLA, reconstituted tobacco material ( Recon foil) or other materials.
  • the strand produced using the machine 2 is accordingly, for example, a paper strand that can be cut into rod-shaped articles 92 using a cutting device 90.
  • the rod-shaped articles 92 are, for example, paper filters or paper filter segments.
  • the machine 2 Downstream in the material flow direction, the machine 2 includes a flat web structuring device 12, which includes, for example, two crimping rollers 14. With the help of the crimping rollers 14, a three-dimensional structure is introduced into the flat web 4, in particular embossed. The flat web 4, still viewed in the material flow direction, then passes via a dancer 16, which serves to maintain, control or regulate the web tension, as well as various unspecified deflection rollers to an application device 18. With the help of the application device 18, an upper side 20 of the flat web 4 an additive 22 is applied, for example sprayed on. An opposite underside 21 remains unwetted. According to a further embodiment, the application device 18 is designed such that both the top 20 and the bottom 21 of the flat web 4 can be wetted. The additive 22 is in particular a liquid. To apply the additive 22, the application includes Device 18 a wide slot nozzle. The construction of the wide slot nozzle and the application device 18 is explained in detail below in the text.
  • the flat web 4 provided with the additive 22 then reaches a transport roller 24, still viewed in the material flow direction, and is introduced into a flat web preforming device 26 over or along the transport roller 24.
  • the transport roller 24 ensures that the flat web 4 is held under a suitable pre-tension. Maintaining a desired pretension is advantageous for the treatment of the flat web 4 with the additive 22, since in this way a homogeneous application of the additive 22 can be ensured. Furthermore, maintaining the desired pretension is advantageous in order to convert the flat web 4 into a preformed state in the flat web preforming device 26.
  • the preformed flat web 32 arrives in a preformed state into a strand forming device 28.
  • the strand forming device 28 is a format unit into which the preformed flat web 32 arrives via an inlet funnel 30.
  • the strand 6 is formed from the preformed flat web 32 in the format unit.
  • Rod-shaped articles 92 for the tobacco processing industry for example filter rods or segments, can be cut to length from the strand 6 using the cutting device 90.
  • a top view of the flat web 4 is schematically illustrated. While the flat web 4 is in its original width up to the flat web pre-forming device 26, it is reshaped in the flat web pre-forming device 26 from a gathered or, for example, cylindrical structure. The result is the preformed flat web 32, which is formed into a strand 6 in the strand forming device 28. What is important for the forming process is the web tension of the flat web 4 at the inlet into the flat web preforming device 26. In order to set the web tension to a desired value and also to keep it within a specified value interval, for example, the transport roller 24 is provided. The transport roller 24 also serves in particular to guide the flat web 4. The transport roller 24 is designed to be driven, for example.
  • the transport roller 24 can also be designed to rotate freely. If the transport roller 24 is driven, this drive can be controlled or regulated. For example, a speed of the transport roller 24 is adjusted to a web speed of the flat web 4 and the speed of the transport roller 24 is correspondingly controlled or regulated to the web speed of the flat web 4. As a result, there is no or only a minimal relative movement between a surface of the transport roller 24 and the flat track 4 instead. Ideally, both surfaces move at the same speed. In this way, abrasion on the flat web 4 can be largely avoided and the process dust that sometimes occurs is avoided, or at least significantly reduced.
  • the flat web preforming device 26 is designed as a shaping shoulder 36. This exemplary embodiment is explained in FIGS. 2 to 5. According to a further exemplary embodiment, the flat web preforming device 26 is designed as a keyway roller 38. This exemplary embodiment is explained in FIGS. 6 to 9.
  • Fig. 2 shows a simplified perspective view of a forming shoulder 36.
  • the forming shoulder 36 comprises a forming section 40 and a tubular section 42. Both sections are distributed over different components of the forming shoulder 36, as will be explained further below.
  • the forming section 40 and the tubular section 42 merge into one another along, for example, a spatial forming edge 44.
  • the forming edge 44 is spatial in the sense that it does not lie or run in a single plane.
  • the tubular section 42 is, for example, cylindrical, with a lateral surface or inside of the tubular section 42 does not necessarily have to form a completely closed surface. For example, in an upper region of the tubular section 42, between the shoulder elements 50, 52 described in more detail below, there is a gap running in the longitudinal direction of the tubular section 42.
  • the forming section 40 and the tubular section 42 of the forming shoulder 36 are arranged relative to one another in such a way that, in the material flow direction, the flat web 4, starting from the transport roller 24, first comes into contact with the forming section 40 in an at least approximately flat or flat state and in a first transport direction T1 .
  • the flat web 4 then comes into contact with the tubular section 42 over the forming edge 44 in an at least partially rolled-up state in a second transport direction T2.
  • the first transport direction T1 and the second transport direction T2 form an angle which is at least approximately is 90°.
  • the mold shoulder 36 includes a right front shoulder element 46 and a left front shoulder element 48.
  • the two front shoulder elements 46, 48 have curved outer surfaces which form a portion of the forming section 40 of the mold shoulder 36.
  • the mold shoulder 36 further comprises a right rear shoulder element 50 and a left rear shoulder element 52.
  • the rear shoulder elements 50, 52 in turn have curved outer surfaces, which also form a portion of the forming section 40 of the mold shoulder 36.
  • the flat web 4 Downstream of the forming edge 44, the flat web 4 is transported in an at least partially together rolled state in the second transport direction T2.
  • the side or edge regions of the flat web 4 come into contact further above with the rear shoulder elements 50, 52, more precisely their forming sections 40.
  • the flat web 4 In this upper region, the flat web 4 is formed into an at least approximately cylindrical body and in the direction of the second transport direction T2 promoted through the tubular section 42.
  • the side edges of the flat web 4 can overlap one another, lie in abutment with one another or have a gap between one another that extends in the longitudinal direction of this cylindrical body.
  • the shoulder elements 46, 48, 50, 52 are fastened together to a flange 54.
  • a guide element 56 is present between the flange 54 and the shoulder elements 46, 48, 50, 52.
  • spacer elements are provided between the front and rear shoulder elements 46, 48 and 50, 52.
  • a right spacer element 58 extends between the right front shoulder element 46 and the right rear shoulder element 50. Through this right spacer element 58, the forming edge 44 can be continued continuously between the right front shoulder element 46 and the right rear shoulder element 50.
  • the left spacer element 60 extends between the left front shoulder element 48 and the left rear shoulder element 52 and continuously continues the forming edge 44 between these two shoulder elements 48, 52. Furthermore, a central spacer element 62 can be provided, which continuously extends the forming edge 44 between the right and left front shoulder elements 46, 48.
  • the spacer elements 58, 60, 62 are advantageously provided because the shoulder elements 46, 48, 50, 52 are individually adjustable.
  • the shoulder elements 46, 48, 50, 52 are each adjustable in a linear movement.
  • the shoulder elements 46, 48, 50, 52 are, for example, over a corresponding slot connection 64 is attached to the associated guide element.
  • a scale can enable the shoulder elements 46, 48, 50, 52 to be adjusted along precisely defined adjustment paths.
  • the shoulder elements 46, 48, 50, 52 are adjustable in such a way that a length of the forming edge 44 can be changed. Accordingly, spacer elements 58, 60, 62 of different sizes can be provided in order to realize appropriate adjustments of the mold shoulder 36.
  • the front shoulder elements 46, 48 are displaceable along front displacement directions which lie in a plane perpendicular to a longitudinal axial direction L of the tubular section 42.
  • a motor drive or several motor drives can be present. These drives, not shown, can be implemented with manageable technical effort due to the existing linear adjustability of the shoulder elements 46, 48, 50, 52.
  • the shoulder elements 46, 48, 50, 52 can be individually adjustable independently of one another, be they motor-driven or manually adjustable. A coupled adjustability can also be provided.
  • Fig. 3 shows a simplified frontal view of the mold shoulder 36, schematically showing a right front displacement direction 66, along which the right front shoulder element 46 is displaceable, and a left front displacement direction 68, along which the left front shoulder element 48 is displaceable.
  • the two displacement directions 66, 68 point in the direction of an axis which coincides with the longitudinal axial direction L of the tubular section 42. They therefore point towards a center of the tubular section 42.
  • the rear shoulder elements 50, 52 are along rear sliding Directions 70, 72 can be displaced, these rear displacement directions 70, 72 running obliquely to the aforementioned plane.
  • a right rear displacement direction 70, in the direction of which the right rear shoulder element 50 is displaceable, and a left rear displacement direction 72, along which the left rear shoulder element 52 is displaceable, are indicated.
  • the rear displacement directions 70, 72 meet at least approximately in a straight line defined by the longitudinal axial direction L, this intersection point lying outside the tubular section 42.
  • the length of the forming edge 44 can be changed. While the forming edge 44 is comparatively large in FIG is. For example, if the forming shoulder 36 is in the state shown in FIG. It is also possible to process different wide flat sheets 4. For example, with the setting of the forming shoulder 36 shown in FIG. 3, a rather wide flat web 4 is processed than is the case when the forming shoulder 36 is in the state shown in FIG. 4. The shaping shoulder 36 can therefore be flexibly adjusted to flat sheets 4 of different widths.
  • FIG. 5 shows a simplified side view of the mold shoulder 36.
  • the first and second transport directions T1, T2 are illustrated, which at least approximately enclose an angle of 90°.
  • the shoulder elements 46, 48, 50, 52 are in the state shown in FIG. 4, i.e. have moved so far that no spacer elements 58, 60, 62 are provided between the shoulder elements 46, 48, 50, 52.
  • the flat web preforming device 26 used is not the mold shoulder 36 previously described in connection with FIGS. 2 to 4, but rather a keyway roller 38.
  • FIG. 6 shows a simplified perspective view of a part of the machine 2, which includes a keyway roller 38 as a preforming device 26.
  • the flat web 4 passes through a pair of crimping rollers 14 as a flat web structuring device 12 and then reaches the transport roller 24 along the first transport direction T1.
  • the transport roller 24 ensures the web tension required for the subsequent pre-forming of the flat web 4.
  • the application device 18 is arranged, with the help of which the additive 22 is applied to the top 20 of the flat web 4.
  • This application device 18 can also be designed in such a way that both the top 20 and the bottom 21 of the flat web 4 can be provided with the additive 22.
  • the transport roller 24 is designed as a crowned roller 74.
  • the flat web 4 runs over the transport roller 24 in the direction of the keyway roller 38, the flat web 4 now being conveyed in the direction of the second transport direction T2.
  • the keyway roller 38 becomes the flat web preforming device 26 by folding or gathering the flat web 4 transversely to its longitudinal direction.
  • the preformed flat web 32 then runs into an inlet hopper 30 of a format unit as a strand forming device 28 for further processing.
  • the keyway roller 38 includes a left and a right cheek 76, 78 forming the keyway. These are coupled and/or connected to one another via a connecting shaft 80.
  • the first transport direction T1 is the direction in which the flat web 4 is fed to the transport roller 24.
  • the second transport direction T2 is the direction in which the at least partially gathered flat web 32 is conveyed downstream of the transport roller 24.
  • the second transport direction T2 coincides, for example, with a longitudinal direction of the tubular section 42 of the mold shoulder 36.
  • the second transport direction T2 can coincide with a conveying direction of the shirred flat web 32 in the strand forming device 28.
  • the second transport direction T2 and the conveying direction of the strand forming device 28 downstream of the inlet funnel 30 can also differ slightly from one another.
  • An angle between the first and second transport directions T1, T2 is always determined in a common plane. If the two transport directions are placed together like vectors, for example the tip of the vector for the first transport direction T1 at the end of the vector for the second transport direction T2, the angle between the two directions should always be the smaller of the two possible angles.
  • the vector of the first transport direction T1 collide with the vector of the second transport direction T2 from above.
  • Fig. 7 shows a further simplified perspective view of the area of the machine 2 in the area of the keyway roller 38.
  • Fig. 8 shows this situation with a view of the underside 21 of the flat track 4.
  • the support body 82 supports the gathering of the flat web 4.
  • Fig. 9 shows a further simplified perspective detailed view the machine 2 of the tobacco processing industry, the flat web preforming device 26 of which comprises a first keyway roller 38a and a second keyway roller 38b.
  • both keyway rollers 38a, 38b are designed like the previously described keyway roller 38.
  • the first keyway roller 38a interacts with an underside 21 of the flat web 4, with which the flat web 4 is also guided over or along the transport roller 24.
  • the transport roller 24 is again a spherical roller 74.
  • the second keyway roller 38b interacts with an upper side 20 of the flat track 4 and is, for example, arranged downstream of the first keyway roller 38a.
  • the first and second spline rollers 38a, 38b can have differently shaped support bodies 82.
  • the second support body 82b viewed in a plane in which the connecting shaft 80 runs, is designed such that its aspect ratio of height to width is greater than the aspect ratio of the first support body 82a.
  • the second support body 82b is designed to be higher and narrower than the first support body 82a.
  • This different shape of the support bodies 82a, 82b contributes to the fact that the flat web 4 can be preformed in an improved manner.
  • Fig. 10 is a schematically simplified side view of a detail of the machine 2 of the tobacco processing industry.
  • the machine 2 includes a forming shoulder 36 as a flat web preforming device 26.
  • the flat web 4 which is, for example, a paper web, is deflected into the first transport direction T1 via unspecified deflection rollers.
  • the application device 18 is arranged, which includes the wide slot nozzle 94 for applying the additive 22.
  • the additive 22 is supplied to the wide slot nozzle 94 or the application device 18 via an additive connection 96.
  • the application device 18 includes a compressed air connection 98, with which the application device 18 can be supplied with compressed air can.
  • the application device 18 is mounted so that the additive 22 is applied to the flat web 4 in an additive application direction 100.
  • the additive application direction 100 forms an angle with a plumb line 102 that is perpendicular to the plane in which the flat web 4 extends. This angle between the additive application direction 100 and the solder 102 should be referred to as the application angle.
  • the application device 18 is mounted in such a way that the application angle is adjustable. In addition, a distance D between the wide slot nozzle 94 and the flat web 4 can be adjusted.
  • the application device 18 includes a wide slot nozzle 94, which includes a base body 104 in which a storage chamber 106 is located.
  • the storage chamber 106 serves to accommodate the additive 22 supplied via the additive connection 96 to the wide slot die 94.
  • a heater 108 also present in the base body 104 allows the additive 22 to be tempered or kept at a desired temperature.
  • Fig. 11 shows a schematically simplified side view of the application device 18.
  • the wide slot nozzle 94 includes the base body 104, in which the storage chamber 106 for the additive 22 is located and in which the heater 108, for example an electrical resistance heater, is integrated.
  • the heater 108 serves to heat the additive 22, but also to heat the compressed air supplied via the compressed air connection 98.
  • a compressed air heater (not shown) can also be included in the machine 2.
  • the additive 22 can also be preheated before it is fed to the application device 18 via the additive connection 96.
  • the heater 108 integrated into the base body 106 of the slot nozzle 94 therefore preferably serves to maintain the preset temperatures or, if necessary, to carry out a slight readjustment of the temperatures.
  • the wide slot nozzle 94 is, for example, a contact wide slot nozzle or a contactless wide slot nozzle.
  • a contact wide slot nozzle 94 is shown in the schematically simplified detailed view of FIG. 12. The wide slot nozzle 94 sits directly on a top side 20 of the flat web 4 and is therefore in direct contact with it. Using a contact wide slot nozzle can prevent overspray.
  • the wide slot nozzle 94 is a compressed air-assisted wide slot nozzle 94. It includes a nozzle gap 110 provided for the additive 22, which in the exemplary embodiment shown extends, for example, over the entire length of the wide slot nozzle 94. On both sides of the nozzle gap 110, air gaps 112 extend at least approximately parallel to it, from which compressed air emerges to support the application of the additive 22.
  • the distance D (see FIG. 10) between the nozzle gap 110 of the wide slot nozzle 94 and the top 20 of the flat web 4 is, for example, between 3 mm and 60 mm.
  • the heater 108 is designed to heat the additive to a temperature or to maintain it at a temperature so that the additive 22 has a viscosity between 50 m Pa*s and 1600 m Pa*s.

Abstract

L'invention concerne : une machine (2) de l'industrie du traitement du tabac ; un procédé de production d'un filtre en papier ; et l'utilisation de la machine (2). La machine (2) comprend, agencés les uns après les autres dans une direction de flux de matériau : un dispositif de fourniture de bande plate (8), un dispositif de structuration de bande plate (12), un dispositif de préformage de bande plate (26) et un dispositif de formation de tige (28). Un rouleau de transport (24) est situé entre le dispositif de structuration de bande plate (12) et le dispositif de préformage de bande plate (26), et un dispositif d'application (18) est situé entre le dispositif de structuration de bande plate (12) et le dispositif de préformage de bande plate (26), ledit dispositif d'application (18) étant conçu pour appliquer un additif (22) à au moins un côté supérieur (20) de la bande plate (4), le dispositif d'application (18) comprenant une buse à fente large (94) pour appliquer l'additif (22).
PCT/EP2023/066240 2022-06-29 2023-06-16 Machine et procédé de l'industrie du traitement du tabac pour la production d'une tige ou d'un filtre en papier, et utilisation de la machine WO2024002721A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022116185.4A DE102022116185A1 (de) 2022-06-29 2022-06-29 Maschine und Verfahren der Tabak verarbeitenden Industrie zum Herstellen eines Strangs oder Papierfilters sowie Verwendung der Maschine
DE102022116185.4 2022-06-29

Publications (1)

Publication Number Publication Date
WO2024002721A1 true WO2024002721A1 (fr) 2024-01-04

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PCT/EP2023/066240 WO2024002721A1 (fr) 2022-06-29 2023-06-16 Machine et procédé de l'industrie du traitement du tabac pour la production d'une tige ou d'un filtre en papier, et utilisation de la machine

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DE (1) DE102022116185A1 (fr)
WO (1) WO2024002721A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0913100A2 (fr) 1997-10-30 1999-05-06 British-American Tobacco (Germany) GmbH Procédé pour appliquer des substances sur un matériau filtrant
US6908421B2 (en) * 2000-08-31 2005-06-21 Japan Tobacco Inc. Filter manufacturing machine
US20070157938A1 (en) * 2003-11-25 2007-07-12 Hauni Maschinenbau Ag Device for processing filter tow material, and device for the production of filters
EP2868214A1 (fr) * 2013-10-31 2015-05-06 HAUNI Maschinenbau AG Dispositif de fabrication d'une tige de filtre et machine de l'industrie de traitement du tabac
EP3170411A1 (fr) * 2014-07-18 2017-05-24 Japan Tobacco, Inc. Appareil et procédé de production d'un filtre de cigarette
EP2772146B1 (fr) * 2013-02-28 2018-09-19 Hauni Maschinenbau GmbH Dispositif, procédé et machine de fabrication d'une tige de filtre de l'industrie de traitement du tabac
WO2019158313A1 (fr) * 2018-02-15 2019-08-22 Philip Morris Products S.A. Procédé et appareil de pliage d'une feuille de matériau
WO2022090268A1 (fr) 2020-10-26 2022-05-05 Philip Morris Products S.A. Procédé et appareil pour la fabrication d'un élément d'un article de génération d'aérosol

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2355264C1 (ru) 2005-03-02 2009-05-20 Джапан Тобакко Инк. Сигаретоделательная машина
EP2845499B1 (fr) 2012-10-31 2019-10-16 Japan Tobacco, Inc. Machine à fabriquer des tubes de papier, procédé de fabrication de ces derniers et tube de papier fabriqué par ledit procédé de fabrication

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0913100A2 (fr) 1997-10-30 1999-05-06 British-American Tobacco (Germany) GmbH Procédé pour appliquer des substances sur un matériau filtrant
US6908421B2 (en) * 2000-08-31 2005-06-21 Japan Tobacco Inc. Filter manufacturing machine
US20070157938A1 (en) * 2003-11-25 2007-07-12 Hauni Maschinenbau Ag Device for processing filter tow material, and device for the production of filters
EP2772146B1 (fr) * 2013-02-28 2018-09-19 Hauni Maschinenbau GmbH Dispositif, procédé et machine de fabrication d'une tige de filtre de l'industrie de traitement du tabac
EP2868214A1 (fr) * 2013-10-31 2015-05-06 HAUNI Maschinenbau AG Dispositif de fabrication d'une tige de filtre et machine de l'industrie de traitement du tabac
EP3170411A1 (fr) * 2014-07-18 2017-05-24 Japan Tobacco, Inc. Appareil et procédé de production d'un filtre de cigarette
WO2019158313A1 (fr) * 2018-02-15 2019-08-22 Philip Morris Products S.A. Procédé et appareil de pliage d'une feuille de matériau
WO2022090268A1 (fr) 2020-10-26 2022-05-05 Philip Morris Products S.A. Procédé et appareil pour la fabrication d'un élément d'un article de génération d'aérosol

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