EP4302985A1 - Dispositif et procédé de fabrication de tubes creux - Google Patents

Dispositif et procédé de fabrication de tubes creux Download PDF

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Publication number
EP4302985A1
EP4302985A1 EP23179320.9A EP23179320A EP4302985A1 EP 4302985 A1 EP4302985 A1 EP 4302985A1 EP 23179320 A EP23179320 A EP 23179320A EP 4302985 A1 EP4302985 A1 EP 4302985A1
Authority
EP
European Patent Office
Prior art keywords
format
material strip
strip
web tensioning
hollow tube
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP23179320.9A
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German (de)
English (en)
Other versions
EP4302985B1 (fr
Inventor
Jürgen Pehmöller
Arne Schulz
Ole Hoffmann
Ralf Soltow
Andreas Reichert
Sven GÖBEL
Niko Rossfeldt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koerber Technologies GmbH
Original Assignee
Koerber 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
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Application filed by Koerber Technologies GmbH filed Critical Koerber Technologies GmbH
Publication of EP4302985A1 publication Critical patent/EP4302985A1/fr
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C5/00—Making tubes or pipes without using mandrels
    • 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
    • A24C5/46—Making paper tubes for cigarettes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional [3D] articles
    • B31D5/0095—Making drinking straws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F7/00—Processes not otherwise provided for
    • B31F7/004—Making tubes

Definitions

  • the invention relates to a device for producing hollow tubes, in particular drinking straws or products from the tobacco processing industry, comprising a formatting device which is designed to form a first strip of material and a second strip of material into a two-layer hollow tube during conveyance through the formatting device, wherein one Material strip feed device is provided, which is designed to feed the first material strip and the second material strip to the format device, a cutting device being provided for longitudinally axially cutting a base material strip into the first material strip and into the second material strip.
  • hollow tubes for example to produce straws or recess filters or heat-emergency-burn products for the tobacco processing industry, it is important to produce cross-sections of the hollow tubes that are as consistent as possible in order to enable the quality of the hollow tubes to be as consistent as possible.
  • EP 3 033 952 A2 discloses a device and a method for producing hollow tubes from which tubes are cut to length at the end.
  • the device has a material strip feed device and a cutting device for longitudinally axially cutting a base material strip into a first material strip with a first width and a second material strip with a second width, a gluing device by means of which the first and / or second material strip can be glued, a merging device by means of in which the first and the second strips of material are brought together for gluing together so that the first and the second strips of material lie one above the other offset from one another, and a format device in which a tubular strand is produced from the combined first and second strips of material.
  • first and second material strips cut from the base material strip are placed one on top of the other, offset from one another, and connected to one another in order to enable abutting edges in the hollow tube produced at the end.
  • Paper webs for example, are suitable as material webs.
  • the base material strip is usually pulled off a bobbin.
  • EP 3 332 655 A1 discloses a similar device and method, which specifies the material strip thicknesses, widths and amount of adhesive.
  • WO 2021/185486 A1 also discloses a device for producing hollow tubes, in which a first formatting device is provided, which is designed to convey a first strip of material longitudinally and to form it into a first hollow tube during conveyance, with a second formatting device being provided, which is located behind the in the conveying direction first format device is arranged and is designed to wrap a second strip of material around the first strip of material during a longitudinal axial conveyance of the second strip of material, so that a double-layered hollow tube is formed, which has the first hollow tube on the inside and the second strip of material on the outside.
  • the first formatting device for forming has a formatting chamber which does not require a formatting belt, so that inner hollow tubes which have a constant diameter are reliably formed over very long periods of operation of the device.
  • the diameter of the hollow tubes produced can change over time. Wear is relatively high in the production of hollow tubes because there is a relatively high level of slip between the format belt and the material strip or the hollow tube.
  • safe production of hollow tubes should also be possible in the event that a connection point is present in the material strip.
  • a device for producing hollow tubes, in particular drinking straws or products from the tobacco processing industry comprising a formatting device which is designed to form a first strip of material and a second strip of material into a two-layer hollow tube during conveyance through the formatting device, wherein a material strip feed device is provided, which is designed to feed the first material strip and the second material strip to the format device, a first web tensioning device being provided for the first material strip and a second web tensioning device being provided for the second material strip, with one upstream of the first web tensioning device and the second web tensioning device Cutting device is provided for longitudinally axially cutting a base material strip into the first material strip and into the second material strip.
  • the invention is based on the idea that by providing two web tensioning devices, one of which is intended for a cut strip of material, fewer conveying problems occur, even with different friction differences in the webs of the two strips of material, than when guiding the two strips of material over a common web tensioning device.
  • the second web tensioning device comprises a pneumatically deflectable deflection device.
  • the pneumatically deflectable deflection device makes it possible for a tensile stress to be present in the strip of material that is guided around the pneumatically deflectable deflection device, which is sufficiently high but not too high. This is particularly advantageous if the other strip of material During the forming in the format device, a high level of friction is experienced, so that very little tension is exerted on the associated web tensioning device via this strip of material.
  • a maximum tension can be set using the pneumatically deflectable deflection device.
  • a minimum tensile stress can also be set in this way.
  • the pneumatically deflectable deflection device is preferably provided for the second strip of material and, during operation, leads to a deflection or movement of the deflection device, which changes the conveying path or the length of the conveying path of the second strip of material. For example, if the tensile stress in the second strip of material drops too much, the conveying route can be extended, which results in a higher tensile stress.
  • the second web tensioning device preferably has a deflection roller arranged on a compressed air cylinder.
  • the deflection roller is used to deflect the second strip of material.
  • the deflection roller can be brought into a intended position, by means of which a length of the conveying path of the second material strip is specified.
  • the length of the conveying path or the conveying path is varied, controlled, regulated and/or adjusted depending on the stability of the first and/or second material strip.
  • the pressure in the pneumatically deflectable deflection device can also be changed.
  • the pressure in the compressed air cylinder depends on the Stability of the second strip of material varies.
  • the web tension devices are web tension control and/or regulation devices.
  • the first web tensioning device can be a dancer.
  • dancers are in the tobacco processing industry, for example from EP 2 702 881 A1 , the EP 3 434 406 B1 and the WO 2019/211157 A1 , known.
  • the compressed air cylinder is preferably linearly deflectable.
  • the deflection can preferably be between 40 mm and 120 mm, particularly preferably between 60 mm and 100 mm and particularly preferably between 70 mm and 90 mm.
  • twice the path or the double distance can be used to extend the path of the second strip of material.
  • the pressure in the compressed air cylinder is varied, particularly preferably depending on the stability of the second material strip.
  • the excess pressure in the compressed air cylinder can be 0.5 bar to 10 bar, preferably up to 8 bar, particularly preferably up to 6 bar.
  • the pressure in the compressed air cylinder can be at the upper value, for example 6 bar.
  • the deflection roller is moved into a position that serves to maximally extend the length of the conveying path of the second strip of material. If a bobbin change takes place, ie a material strip of a first bobbin is connected to the material strip of a second bobbin, the tensile stability of this connection point is not as high as the tensile stability of the material strip itself.
  • the pressure in the compressed air cylinder is preferably reduced in order to keep the tension in the material strip low until the connection point has passed through the formatting device.
  • the excess pressure in the compressed air cylinder can then be 0.5 bar.
  • the lower value is a value that is less than 1 bar, in particular less than 0.8 bar, in particular less than or equal to 0.6 bar and preferably greater than 0.2 bar, preferably greater than 0.4 bar.
  • the first web tensioning device is a material strip tension control and/or regulation device which comprises a pivotable deflection roller, as disclosed in the above-mentioned prior art.
  • the pivoting can be spring-biased or pivoting can be provided by means of an electric motor.
  • the cutting device is provided for longitudinally axially cutting a base material strip into the first material strip and into the second material strip.
  • the cutting device here preferably comprises a pull cutting roller and a cutting knife acting therewith.
  • the first strip of material has a slightly different width than the second strip of material, since the first strip of material preferably serves to form an inner tube and the second strip of material preferably serves to form an outer tube of the two-layer hollow tube.
  • the width of the material strip of the inner tube is necessarily smaller than the width of the material strip of the outer tube.
  • the first web tensioning device is designed to control and/or regulate a conveying speed of the base material strip.
  • a basic conveying speed is preferably specified by a machine control, which preferably depends on the conveying speed of the hollow tube to be produced.
  • the first web tensioning device can then serve to set the basic conveying speed, in particular depending on the tension in the first strip of material to change. This means that consistently high-quality hollow tubes can be produced.
  • the format device is preferably free of format tape.
  • a format device that is free of format belts and is used to form a two-layer hollow tube has its own inventive content.
  • the use of a format belt-free format device for producing hollow tubes from a first strip of material and a second strip of material has the advantage that the diameter of the hollow tube produced remains constant. This means that wear on a format belt that would otherwise be used does not affect the diameter of the hollow tube, which would be the case if a format belt was used to form the hollow tubes in a format device.
  • the hollow tube is completely formed in the formatting device from the two strips of material.
  • a pull format device with a format belt is preferably provided, which is arranged downstream of the format device in the conveying direction.
  • the pull format device then pulls the hollow tube made in two layers.
  • the format device preferably has a heating device. Since the format device is free of format tape, it is possible to provide a heating device at this point. In particular, a heating device is provided from below in a subformat. As a result, the adhesive used to connect the strips of material hardens early and quickly.
  • an air flow is admitted into a formatting chamber of the formatting device from the outside to the inside. This creates an air cushion between the inner wall of the format chamber of the format device and the strip of material, so that friction is reduced.
  • a hole or several holes can be provided in the format device, in particular through the cover strip.
  • Compressed air supply device may be provided, which conveys compressed air through the hole or holes.
  • the compressed air supply device can also be a compressed air reservoir.
  • a pump can be provided.
  • the format device comprises a first format chamber and a second format chamber, wherein the first format chamber is designed to convey the first strip of material longitudinally axially and to form it into a hollow tube during conveyance, wherein the second format chamber is arranged and designed behind the first format chamber in the conveying direction , to wrap the second strip of material around the first strip of material in a longitudinal axial conveyance, so that a double-layered hollow tube is formed, which has the hollow tube on the inside and the second strip of material on the outside.
  • This is a constellation that is essentially the one from the WO 2021/185486 A1 corresponds.
  • the second format chamber can be provided with a format belt or preferably without a format belt.
  • the first and second format chambers are preferably free of format tape.
  • the first format chamber and the second format chamber are part of the format device.
  • the first strip of material and the second strip of material are in direct or immediate contact with one another, at least in the format device.
  • a conveying path of the second strip of material is changed by means of the second web tensioning device depending on the stability of the first and/or second strip of material.
  • the tensile stress of the second material strip is controlled or regulated.
  • the first web tensioning device controls or regulates a feed of the base material strip or a conveying speed of the base material strip.
  • the changing of the conveying route or the length of the conveying route of the second strip of material is preferably done via a pneumatic deflection of a deflection device of the second web tensioning device, a very safe method can be made possible, with sufficient tensile stress being provided in the second strip of material on the one hand and, on the other hand, this tensile stress can be reduced sufficiently when changing the bobbin.
  • the pneumatic pressure is changed if the stability of the first material strip and/or the second material strip changes. This is particularly the case if the connection point is conveyed through the material strip web during a bobbin change becomes.
  • the first strip of material and the second strip of material are formed in the format device without a format tape. This allows the diameter of the hollow tube produced to be kept very constant.
  • a pull format device with a format belt is preferably provided, which is arranged downstream of the format device in the conveying direction
  • the material strips are preferably heated in the formatting device.
  • an air cushion is preferably generated between the first material strip and / or the second material strip of at least one inner wall of the format device.
  • the first strip of material and the second strip of material are brought together offset from one another in front of the formatting device, so that they are placed one on top of the other, or the first strip of material is conveyed longitudinally axially through a first formatting chamber of the formatting device, thereby forming a first hollow tube from the first strip of material and then the second material strip of a second format chamber of the format device is wrapped around the first hollow tube to form a two-layer hollow tube.
  • Two alternative procedures are therefore preferably carried out, namely in the first procedure that the two strips of material are brought together offset from one another before being formed into the hollow tube, with an adhesive then being applied between the two strips of material in order to then be conveyed together through the formatting device in order to produce the hollow tube or, as a second variant, to first form the inner tube in a first format chamber of the format device, then around the outside of the second strip of material to wrap around, whereby an adhesive was then applied to connect the two strips of material before wrapping around.
  • Embodiments according to the invention can fulfill individual features or a combination of several features.
  • Fig. 1 shows a schematic representation of a material strip run Production of two-layer hollow tubes 10 in a material strip feed device 23 according to the invention.
  • a base material strip 20, for example made of paper, is pulled off a cutting device 37 by a reel 19.
  • the cutting device 37 can be a pull cutting device.
  • the first material strip 21 and the second material strip 22, which are cut from the base material strip 20 are deflected via a common dancer, and later the material strips 21, 22 are conveyed via other paths.
  • the dancer serves to control the tension of the strips of material.
  • the invention now provides in particular for the two material strips 21 and 22 to run over two web tensioning devices 31 and 32 that are separate from one another.
  • the first material strip 21 is allowed to run over a first web tensioning device 31, for example a dancer, ie over the deflectable, in particular pivotable, deflection roller 36, and the second web tensioning device 32 over a deflection device 33, comprising a deflection roller 35, which is arranged on a compressed air cylinder 34 is allowed to run.
  • the deflection device 33 can therefore be moved over a distance, as the arrows indicate. This allows a sufficiently high or low force or tensile stress to be maintained in the second strip of material 22. This is done by moving the compressed air cylinder 34 and/or the deflection roller 35, which is arranged on the compressed air cylinder 34, in a direction that lengthens or shortens the distance of the second material strip 22.
  • a Compressed air cylinders 34 are pressurized with a predeterminable pressure, such as 6 bar in this exemplary embodiment.
  • a force is exerted on the second material strip 22, which is greater than the force on the first wrapping material strip 21 caused by the friction losses of the first material strip 21.
  • This causes the deflection roller 35 to move into the in Fig. 1 shown upper stop.
  • a connection point is provided in the material strips, which reduces the stability of the first material strip 21 and the second material strip 22.
  • the pressure in the compressed air cylinder 34 is reduced to 1 bar or lower, thereby reducing the force in the second strip of material 22, so that the deflection roller 35 moves downward, as also shown by the downward arrow.
  • the pressure in the compressed air cylinder is increased again to 6 bar, as a result of which the deflection roller 35 moves upwards again to the end position. In this way, even with high friction losses, seams or changing points of material strips 21, 22 can be driven in continuous operation.
  • High friction losses occur in particular when there is a large seam offset, in particular a seam offset greater than 82°, in particular greater than 100°, in particular greater than 110°, in particular greater than 120°, in particular greater than 130°, in particular greater than 140° , in particular greater than 150°, in particular greater than 160°, in particular greater than 170°, in particular with a seam offset of 180°
  • the first material strip 21 reaches the first web tensioning device 31 via a deflection roller 17, a flat guide 14, three further deflection rollers 17, a further bolt guide 16, by means of which in particular the edges of the first material strip 21 are guided, and a further deflection roller 17 first format chamber 51 of the format device 11.
  • the hollow tube 10, preferably with a seam underneath, is formed in the first format chamber 51.
  • the first format chamber 51 can include a middle finger. This will be discussed on the WO 2021/185486 A1 referred.
  • the path of the second material strip 22 runs after the second web tensioning device 32 via a deflection roller 17 past a flat guide 14 via further deflection rollers 17 to a further flat guide in order to provide a film gluing 15, which provides a full-surface or almost full-surface gluing of the second material strip 22.
  • Approximately full-surface gluing is considered to be a gluing of at least 80% of the surface of the second material strip 22, in particular at least 90%.
  • the second material strip 22 then reaches a further deflection roller 17 in order to be guided more precisely in the transverse axial position by a bolt guide 16.
  • the bolt guide 16 has, for example, two edges that guide the edges of the second material strip 22.
  • the second material strip 22 then passes via a deflection roller 17 into the second format chamber 52 of the format device 11, in which the second material strip 22 is wound around the inner hollow tube 10 formed from the first material strip 21.
  • FIG. 1 A pull format device 41 is also shown, which has a format belt and pulls the two-layer hollow tube 10 produced in the conveying direction 12. At the end, a hollow tube 10 comes out of the pull format device 41, which can be cut to the desired lengths.
  • the web guides of the material strips can of course also be designed differently. For example, more or fewer guides and/or more or fewer deflection rollers can be provided.
  • Fig. 2 shows schematically a format device 11 according to the invention, which has two format chambers 51, 52, whereby the process control can be designed as in Fig. 1 is described.
  • an inner tube 10 is first formed from the first strip of material 21 in order to then wrap the second strip of material 22 around the inner tube 10 formed.
  • a bore 54 is shown, into which an air stream 55 can be introduced by a compressed air device 53. This is shown very schematically.
  • An air flow 55 can also be introduced into the second format chamber 52 or several air flows can be introduced into the format chambers 51, 52.
  • a heating device 13 is shown schematically, which serves to heat the hollow tube 10 formed from two strips of material 21, 22 in order to ensure that the adhesive or glue sets at an early stage.
  • a pull format device 41 adjoins the format device 11 in the conveying direction 12.
  • the pull format device 41 has a format belt 40 which, as usual, runs in the pull format device 41 and is at least partially wrapped around the double-layer hollow tube 10 in order to pull it in the conveying direction 12.
  • Fig. 3 shows schematically another embodiment of a format chamber 11 according to the invention.
  • the first strip of material 21 and the second strip of material 22 are placed one above the other in an offset manner and only then are they introduced into the format device 11.
  • a double-layer or two-layer hollow tube 10 is then formed in the format chamber 51 of the format device 11.
  • This hollow tube formed there is pulled in the conveying direction 12 by the subsequent pull format device 41.
  • the pull format device 41 is provided with a format belt 40 which runs through the pull format device 41.
  • the respective format devices 11 are free of format tape.
  • a heating device 13 is also shown, which heats the material strips 21, 22 from below.
  • a format tape-free format device 11 for training of the two-layer hollow tubes 10 leads to very uniformly produced diameters of the hollow tubes 10. If format belts 40 are used for forming, the diameters of the double-layer hollow tubes 10 produced would increase continuously over the course of using the format belts 40, since the format belts become thinner due to wear. This is prevented by format devices 11 without format tape.
  • the format chamber 51, 52 or the format chambers 51, 52 of the format device 11 are metallic and in particular the surfaces that come into contact with the material strips 21, 22 have reduced friction. This can be made possible by a friction-reducing coating or by very smooth, especially polished, surfaces. Thanks to format belt-free format devices 11, the format belts 40, which are only used for conveying, can be used longer in the pull format device 41, since these only have the function of pulling and no longer of shaping. On the one hand, this reduces wear and, on the other hand, the format belts 40 can also be used for drawing if they have become too thin for shaping.

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EP23179320.9A 2022-06-28 2023-06-14 Dispositif et procédé de fabrication de tubes creux Active EP4302985B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022116045.9A DE102022116045A1 (de) 2022-06-28 2022-06-28 Vorrichtung und Verfahren zur Herstellung von Hohlrohren

Publications (2)

Publication Number Publication Date
EP4302985A1 true EP4302985A1 (fr) 2024-01-10
EP4302985B1 EP4302985B1 (fr) 2024-12-04

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EP23179320.9A Active EP4302985B1 (fr) 2022-06-28 2023-06-14 Dispositif et procédé de fabrication de tubes creux

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EP (1) EP4302985B1 (fr)
DE (1) DE102022116045A1 (fr)
PL (1) PL4302985T3 (fr)
PT (1) PT4302985T (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024101817A1 (de) * 2024-01-23 2025-07-24 Körber Technologies Gmbh Hohlröhrchenherstellung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7117871B2 (en) * 2002-12-20 2006-10-10 R.J. Reynolds Tobacco Company Methods for manufacturing cigarettes
EP2702881A1 (fr) 2012-09-03 2014-03-05 HAUNI Maschinenbau AG Procédé et dispositif destinés au traitement d'une bande de matériau d'enrobage
EP3033952A2 (fr) 2014-12-16 2016-06-22 HAUNI Maschinenbau AG Tube double couche de l'industrie de traitement du tabac et dispositif et procede de fabrication d'un tel tube
EP3332655A1 (fr) 2016-12-12 2018-06-13 Hauni Maschinenbau GmbH Petit tube double couche de l'industrie de traitement du tabac ainsi que procédé de fabrication d'un tel petit tube
EP3357354A1 (fr) * 2017-02-01 2018-08-08 Hauni Maschinenbau GmbH Procédé de fabrication d'un brin de l'industrie de traitement du tabac ainsi que dispositif de formation de brins
WO2019211157A1 (fr) 2018-05-04 2019-11-07 Hauni Maschinenbau Gmbh Fabrication de boudins de l'industrie du tabac, en particulier de boudins creux
WO2021185486A1 (fr) 2020-03-16 2021-09-23 Hauni Maschinenbau Gmbh Dispositif de production de tubes creux, notamment de pailles, et procédé pour de tels tubes creux
EP3434406B1 (fr) 2017-07-28 2021-12-22 Hauni Maschinenbau GmbH Dispositif de raccordement de bandes de matière

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
GB453172A (en) 1935-04-05 1936-09-07 Walter Everett Molins Improvements in or relating to the manufacture of paper and like tubes
GB1214491A (en) 1967-02-21 1970-12-02 Molins Machine Co Ltd Improvements in the manufacture of composite of flexible material
RU2331344C2 (ru) 2002-11-19 2008-08-20 Браун Энд Уилльямсон Холдингс, Инк. Машина для изготовления сигарет с изменяемой скоростью горения
CN211812619U (zh) 2020-03-04 2020-10-30 江西中烟工业有限责任公司 一种卷烟机的卷烟纸张紧力在线检测及调节装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7117871B2 (en) * 2002-12-20 2006-10-10 R.J. Reynolds Tobacco Company Methods for manufacturing cigarettes
EP2702881A1 (fr) 2012-09-03 2014-03-05 HAUNI Maschinenbau AG Procédé et dispositif destinés au traitement d'une bande de matériau d'enrobage
EP3033952A2 (fr) 2014-12-16 2016-06-22 HAUNI Maschinenbau AG Tube double couche de l'industrie de traitement du tabac et dispositif et procede de fabrication d'un tel tube
EP3332655A1 (fr) 2016-12-12 2018-06-13 Hauni Maschinenbau GmbH Petit tube double couche de l'industrie de traitement du tabac ainsi que procédé de fabrication d'un tel petit tube
EP3357354A1 (fr) * 2017-02-01 2018-08-08 Hauni Maschinenbau GmbH Procédé de fabrication d'un brin de l'industrie de traitement du tabac ainsi que dispositif de formation de brins
EP3434406B1 (fr) 2017-07-28 2021-12-22 Hauni Maschinenbau GmbH Dispositif de raccordement de bandes de matière
WO2019211157A1 (fr) 2018-05-04 2019-11-07 Hauni Maschinenbau Gmbh Fabrication de boudins de l'industrie du tabac, en particulier de boudins creux
WO2021185486A1 (fr) 2020-03-16 2021-09-23 Hauni Maschinenbau Gmbh Dispositif de production de tubes creux, notamment de pailles, et procédé pour de tels tubes creux

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DE102022116045A1 (de) 2023-12-28
EP4302985B1 (fr) 2024-12-04
PT4302985T (pt) 2025-01-22
PL4302985T3 (pl) 2025-03-31

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