EP3332655B1 - Double layer tube for the tobacco processing industry and method for producing such a tube - Google Patents

Double layer tube for the tobacco processing industry and method for producing such a tube Download PDF

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Publication number
EP3332655B1
EP3332655B1 EP17205335.7A EP17205335A EP3332655B1 EP 3332655 B1 EP3332655 B1 EP 3332655B1 EP 17205335 A EP17205335 A EP 17205335A EP 3332655 B1 EP3332655 B1 EP 3332655B1
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EP
European Patent Office
Prior art keywords
material strip
strip
adhesive
width
tube
Prior art date
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Active
Application number
EP17205335.7A
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German (de)
French (fr)
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EP3332655A1 (en
Inventor
Alexander Buhl
Roman Piechaczek
Jan Blewonska
Stefan KNOBBE
Kevin BRAST
Ralf Soltow
Felix LÜCKE
Gerd Strohecker
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Koerber Technologies GmbH
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Koerber Technologies GmbH
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Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02Manufacture of tobacco smoke filters
    • A24D3/0229Filter rod forming processes
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24CMACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/46Making paper tubes for cigarettes
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/02Cigars; Cigarettes with special covers
    • A24D1/025Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity

Definitions

  • the invention relates to a double-layer tube for the tobacco processing industry and a method for producing double-layer tubes for the tobacco processing industry.
  • tubes for example cardboard tubes or paper tubes, are used in order, for example, to provide special filters such as a recess filter or a hollow filter.
  • filters such as a recess filter or a hollow filter.
  • such tubes also serve as a component of a diffuser which ensures that a smoke containing nicotine is evened out.
  • a corresponding tube should have a certain stability, which is why it is known to produce multi-walled paper tubes.
  • EP 3 033 952 A2 discloses a double-layer tube for the tobacco processing industry and a device and a method for producing such a tube.
  • a product of the tobacco processing industry is disclosed with a filter comprising a hollow cylinder made of a stable paper material.
  • a double-layer tube of the tobacco processing industry made from a first and a second strip of material section, the first strip of material section having a first width and the second strip of material section having a second width, the first and the second strip of material section being wound around one another in such a way are that the first strip of material section has a circular or oval shape in cross section and the edges defining the first width butt together, the second strip of material section having a circular or oval shape in cross section and the edges defining the second width butt together, the second strip of material section arranged externally around the first strip of material portion, wherein the abutting edges of the first and second strip of material portion are offset from one another in the circumferential direction, with the thickness of the first and second material strip section being in a range from 38 ⁇ m to 160 ⁇ m, with a position adhesive between the first and the second material strip section as a full-area or almost full-area gluing with an application thickness of 10 ⁇ m up to 80 ⁇ m is provided.
  • the edges of the first and second material strip sections arranged in abutment have a very easily definable roundness at these transition points, as a result of which the quality of the double-layered tube produced is significantly improved compared to the prior art.
  • an application thickness is understood to mean the thickness of the adhesive that prevails during application.
  • an EP 2 974 798 A1 which produces an adhesive track or glue line of a predetermined thickness.
  • the position adhesive is the adhesive that is arranged between the first and second material strip section or a first and a second material strip, which indicates an overlap of the first and second material strip after the first and second material strip have been brought together in an offset manner.
  • the positional adhesive can be considered to be the adhesive located on the larger peripheral portion between the butt edges. on the smaller one A so-called seam adhesive is provided on the peripheral section between the abutting edges.
  • the application thickness of the adhesive does not correspond to the adhesive thickness after the material strips have been joined or the manufactured double-layer tube. The reason for this is that, on the one hand, the adhesive hardens and, on the other hand, adhesive is also absorbed in the strip of material.
  • the thickness of the first and second material strip section is preferably in a range from 100 ⁇ m to 140 ⁇ m, in particular 120 ⁇ m to 130 ⁇ m, and/or the application thickness of the position adhesive is in a range from 10 ⁇ m to 40 ⁇ m, in particular 15 ⁇ m to 30 ⁇ m ⁇ m.
  • a seam adhesive is preferably provided between the first and the second material section, in particular as a full-surface or almost full-surface gluing, with an application thickness of 40 ⁇ m to 120 ⁇ m, in particular 60 ⁇ m to 100 ⁇ m.
  • the application thickness of the seam adhesive is preferably greater than the application thickness of the position adhesive.
  • the thickness of the seam adhesive is 1.5 to 3 times as thick as the applied thickness of the position adhesive.
  • the weight of the first and/or second material strip section is preferably in a range from 27 g/m 2 to 125 g/m 2 , in particular 60 g/m 2 to 120 g/m 2 , in particular 70 g/m 2 to 110 g/m 2 m2 .
  • the weight of the first and/or second material strip section or of the first and/or second material strip is particularly preferred at 100 g/m 2 .
  • the offset of the abutting edges of the first and second material strip sections is preferably between 0.5 mm and 3 mm, in particular between 1.5mm to 2.5mm.
  • the ratio of the second width to the first width is between 52:48 and 50.5:49.5.
  • the ratio of the second width to the first width or the material strip section widths to one another can depend on the format of the product from the tobacco processing industry that is to be provided with the tube.
  • the ratio of the second width to the first width can be in the range from 51.5 to 48.5.
  • this ratio can be 51.5 to 48.9 and for a king-size cigarette with an outside diameter of 7.4 mm, this ratio can be 50.5 to 49. 5 lie.
  • the width of the material section or sections can be 26.5 mm to 27.5 mm, 31.0 to 32.5 mm and 44.5 mm to 45.5 mm.
  • the material sections or strips of material can be made of paper that has the appropriate thickness and weight as specified above.
  • the paper can be colored on one or both sides, patches made of aluminum or other materials, for example, can be applied, or the paper can be coated with a material, for example an aluminum lamination can be provided.
  • An embossing or an imprint or a stamping can also be provided.
  • One type of adhesive or also several, for example two types of adhesive, can be provided as the adhesive.
  • a PVA adhesive polyvinyl acetate adhesive
  • an additional hotmelt adhesive can be provided.
  • a flavor can be applied, preferably to the first material strip section. The flavor can preferably be added to the adhesive being.
  • the quantities of adhesive or glue used for seam adhesive can also depend on the format. For example, 6 g/500 m to 20 g/500 m, preferably 10 g/500 m, of seam adhesive can be provided for a Microslim cigarette and 25 g/500 m to 55 g/500 m for a Superslim cigarette or king-size cigarette , preferably 45 g/500 m adhesive per line of seam glue.
  • the adhesive amounts of the position adhesive can also be adjusted depending on the cigarette format.
  • a quantity of glue of 10 g/500 m to 60 g/500 m, preferably 20 g/500 m, can be provided for a Microslim cigarette, for example, and a quantity of glue of 25 g/500 m to 70 g/500 m for a Superslim cigarette m, preferably 60 g/500 m and in the case of a king-size cigarette an amount of glue of 35 g/500 m to 80 g/500 m, preferably 55 g/500 m.
  • the glue application pattern is preferably full-surface.
  • the adhesive can be, for example, polyvinyl acetate (PVA or PVAC). This is a thermoplastic material. Other adhesives or glues can also be used.
  • PVA polyvinyl acetate
  • PVAC polyvinyl acetate
  • an adhesive is provided between the first and the second material strip section, essentially over the entire surface or over the entire surface.
  • An almost full-surface gluing is understood in particular as a gluing in which the surface of a material strip section is glued to at least 80%, preferably at least 90%, particularly preferably at least 95% over the entire surface.
  • edges of the respective material strip section are in abutting relationship, this means that these edges abut one another or are at a small distance from one another.
  • Adhesive is preferably provided between at least two edges, in particular the end faces of the edges.
  • glue can be provided to fill a gap between the edges.
  • adhesive is provided between all edges.
  • the possibly present gap between the edges is thus preferably also filled with adhesive.
  • the thickness of the filling is such that the adhesive is preferably flush with the surface of the material strip section.
  • the first width of the material strip sections is preferably smaller than the second width. This measure makes it possible to specify a double-layered tube which, particularly in the outer layer, has a small gap or no gap between the edges or the abutting edges.
  • the first and/or the second material strip section is preferably made of paper or cardboard.
  • a particularly stable, double-layer tube for the tobacco processing industry can be achieved if preferably the abutting edges of the first and second material strip sections are not radially aligned or are not radially aligned with one another. This means that the abutting edges of the first and second material strip sections are offset from one another in the circumferential direction. The abutting edges or the corresponding gaps between the abutting edges are then at a radial angular distance from one another.
  • the radial angular distance is preferably between 2° and 80°, in particular between 5° and 45°, particularly preferably between 10° and 45°.
  • the thickness of the first material strip section preferably corresponds to the thickness of the second material strip section.
  • the quality of the tube produced is particularly high.
  • the thickness of the second material strip section is smaller than the thickness of the first material strip section, it can be ensured that the adhesive used sets faster, so that the production speed can be increased.
  • the material strip feed device can be feed rollers over which a material strip of a corresponding width can be conveyed.
  • a material strip is usually attracted by a material strip bobbin and conveyed into the corresponding device.
  • the cutting device which follows in the conveying direction of the material strip, is a slitter that cuts the material strip in the longitudinal axial direction.
  • the gluing device connected to the cutting device applies glue to at least one of the two material strips, ie the first and/or the second material strip, essentially over the entire surface Format device an end portion of the second strip of material is pressed to close a seam on the first strip of material.
  • this area can also be appropriately glued or provided with adhesive in a subsequent step.
  • the gluing device can be a gluing device that corresponds to a gluing device that is EP 2 974 798 A1 is described.
  • the gluing device is followed in the conveying direction by a merging device which, within the scope of the invention, preferably comprises a paper layer adjustment device or paper layer setting device, by means of which the lateral position, i.e. a relative position of the first and second material strip to one another, transverse to the conveying direction, can be set can, in order to provide only a partial overlap of the first and second strip of material, so that viewed from the width of these strips of material a part protrudes to the left and a part to the right.
  • a merging device which, within the scope of the invention, preferably comprises a paper layer adjustment device or paper layer setting device, by means of which the lateral position, i.e. a relative position of the first and second material strip to one another, transverse to the conveying direction, can be set can, in order to provide only a partial overlap of the first and second strip of material, so that viewed from the width of these strips of material a part protrudes to the left and a part to the right.
  • the device for producing double-layered tubes in the tobacco processing industry first of all produces a tubular strand from at least two layers of a strip of material. This tubular strand can then be cut to length, for example using a conventional knife device. Provision can also initially be made for feeding the tubular rod produced to a further machine, for example a filter rod machine or a tobacco rod machine, in order to introduce a filter material or filter segment and/or a tobacco material or tobacco segment around the tubular rod and/or into the tubular rod. At the end, a strip of wrapping material can then be wound around the strand then formed, in order then finally to cut the corresponding rods with the double-layer tubes contained therein to length.
  • a further machine for example a filter rod machine or a tobacco rod machine
  • a separating device which spatially separates the first strip of material or the second strip of material from the respective other strip of material in the conveying direction downstream of the cutting device.
  • first and second strip of material which point in the same direction, still point in the same direction after the first and second strip of material have been joined together.
  • a first heating device is provided between the combining device and the formatting device.
  • the adhesive can be pre-cured by means of the first heating device, so that the first and the second strip of material are held together and are still deformable, preferably in such a way that the shape already essentially holds itself after bending.
  • the gluing device preferably provides for gluing the entire surface or almost the entire surface of the first and/or the second strip of material.
  • a seam gluing device is preferably provided between the merging device and the formatting device, in particular between the first heating device and the formatting device.
  • the seam gluing device is used when the previous gluing device does not provide full-surface gluing. What is meant is the gluing that was not carried out over the entire surface in the transverse axial direction and thus a glue or adhesive is only applied by means of the seam gluing device, which serves to close the seam.
  • Complete gluing should preferably be carried out transversely to the longitudinal axis by the gluing device and also the seam gluing device.
  • the format device preferably comprises a second heating device.
  • the second heating device can be arranged, for example, in the upper format of the format device and serves in particular preferably for the complete setting of the seam adhesive.
  • An alternative variant can also be provided, for example connecting the device shown upstream of a conventional rod making machine and using a commonly used seam plate as an additional heating device in the conventional rod making machine.
  • a corresponding tubular strand and thus corresponding double-layer tubes for the tobacco processing industry can then be produced with a significantly improved running stability.
  • a cutting device is provided downstream of the formatting device in order to cut small tubes from the tubular strand.
  • a machine in the tobacco processing industry is provided with a device according to the invention, with a rod machine being connected downstream of the device according to the invention.
  • the gluing preferably takes place over the entire surface or almost over the entire surface.
  • An interruption in the gluing on the surface can be present, for example, where a seam of the other strip of wrapping material lies.
  • there can be an interruption in the glue there can be an interruption in the glue.
  • gluing can also be provided at this point, so that gluing actually occurs over the entire surface.
  • staggered merging means gluing that is offset relative to one another in the width of the strips.
  • One or two areas on the second strip of material are preferably provided with a seam adhesive with an application thickness of 40 ⁇ m to 120 ⁇ m, in particular 60 ⁇ m to 100 ⁇ m.
  • the first strip of material is narrower than the second strip of material, wherein the second strip of material is or is arranged externally around the first strip of material, wherein in particular the ratio of a second width of the second strip of material to a first width of the first strip of material is between 52:48 and 50.5 to 49.5.
  • one type of adhesive is used for the position adhesive and another type of adhesive is used for the seam adhesive.
  • One type of adhesive can also be provided for both the position adhesive and the seam adhesive.
  • the material strips brought together are heated during and/or after shaping.
  • the adhesive then hardens in particular completely.
  • the seam adhesive is preferably applied before the strips of material are brought together.
  • the seam adhesive can therefore be applied together with the position adhesive or applied simultaneously with it, ie before the material strips are brought together. Alternatively, this after merging the strip of material or happen both before and after.
  • a first seam adhesive can be applied at the same time as the position adhesive is being applied and a further or supplementary seam adhesive application can take place when the strips of material have been brought together.
  • Multi-layer, in particular double-layer, tubes are preferably produced from material strip sections, which are preferably made of cardboard or paper, in which there are no overlapping seams.
  • material strip sections which are preferably made of cardboard or paper, in which there are no overlapping seams.
  • the double-layer tube is made from a strip of paper, preferably approximately twice as wide, compared to the circumference of the tube, with the strip of paper being cut lengthwise into two strips of slightly different widths, with the two strips of paper produced then being guided on separate paths and preferably the wider and later outer strips are glued, with all traces of glue preferably being applied at the same time.
  • the two paper strips are then superimposed and the superimposed paper strips fed to the format of a format device to form a tubular strand and to close the seam.
  • the device presented is preferably part of a modular slide-in device which can be arranged, for example, preferably between a rod machine in the tobacco processing industry and a filter tow processing machine.
  • tubular strand While the tubular strand is being produced from double-layered strips of material, a suitably prepared filter tow is conveyed through a corresponding push-in device and above the formatting device and introduced into an infeed area of the strand machine.
  • the tubular strand is also introduced into the inlet area, so that the filter tow can be introduced around or into the tubular strand, for example, in order to be able to produce filter rods in this way.
  • the third layer is fed as a third strip of material via a paper run of the rod machine in the infeed area or infeed of the format device.
  • the third strip of material is glued, in particular over the entire surface, and wrapped around the tubular strand in abutting fashion, ie after the tubular strand has already been produced.
  • the abutting edges of the abutment of the third strip of material are at least offset relative to the abutting edge of the second strip of material.
  • the third strip of material may be of a different material than the first and second strips of material.
  • the third strip of material can be paper, foil, crimped paper, electrically conductive material or tobacco foil.
  • a two-string filter tow preparation apparatus could also be used to make a coaxial filter from the double-layer tube or tubular strand.
  • One string of filter tow is then placed around the double layer tubular string and the other string of filter tow is inserted into the tubular string.
  • a coaxial filter can thus be produced after cutting to length into double-layered tubes.
  • an anchoring seam in the form of an adhesive is applied to the tubular strand produced from double-layered material strips, so that the filter tow also holds onto the tubular strand.
  • the first filter material and the second filter material can be different from each other.
  • a double-layer tube which is described above as being according to the invention or preferred, is preferably used as the mouth end piece or used as a middle piece between two filter segments of a filter of a filter cigarette or a filter of a rod-shaped article of the tobacco processing industry.
  • a rod-shaped article of the tobacco processing industry is understood to mean in particular a cigarette or filter cigarette, but also a cigarillo, a cigar, an HnB product (heat not burn) or an e-cigarette.
  • first strip of material 11 has a position adhesive 17, for example a glue, on its upper side.
  • the second material strip 12 is placed on the position adhesive 17.
  • the first strip of material 11 has edges 13 and 14 on the left and right and the second strip of material 12 has edges 15 and 16 on the left and right.
  • a seam gluing 18 has been made on the first strip of material 11, which serves to provide an adhesive bond with the part of the second strip of material 12 that protrudes over the first strip of material 11 on the right. It is also possible to provide seam gluing strips, for example a seam gluing strip 18 on one side of the first material strip 11 and another seam gluing strip on the opposite side of the material strip 11.
  • the gluing 17 can be carried out at the same time as the gluing 18 or, as already stated above , afterwards, before the forming of the tube or the tubular string, in a formatting device.
  • this constellation After passing through the format device, this constellation results in a double-layer tubular strand or, after cutting this strand to length, a double-layer tube with a cross-section of 2 is shown schematically.
  • the first material strip section 11 is then located on the inside, with the edges 13 and 14 being arranged in abutment or at a small distance from one another.
  • This joint area 21 is not radially aligned with the joint area 20 of the second wrapping material strip 12.
  • the edges 15 and 16 are also in abutment there or are provided with a small distance from one another.
  • the gaps in the butt areas 20 and 21 can also be provided with an adhesive. In the case of 2 however, no adhesive is provided.
  • the result is better roundness, since the edge 16 does not overlap, for example with the second strip of wrapping material 12, but is aligned or has a substantially circular outer contour.
  • the thicknesses of the first strip of material section 11 and of the second strip of material section 12 can be different or essentially the same in size. In the case of different thicknesses, it is preferred if the outer material strip section, namely material strip section 12, is thinner than the first material strip section 11. Inventive and preferred thicknesses are described above.
  • FIG 3 shows schematically a device according to the invention for the production of double-layer tubes 10 in the tobacco processing industry.
  • the device according to the invention is shown at the same time.
  • a correspondingly wide strip of base material 24 is pulled off a bobbin (not shown) in the conveying direction 34 and guided over rollers 41 .
  • a cutting device 23 follows a material strip feed device 22 . In the cutting device 23, the strip of base material 24 is cut in the longitudinal direction.
  • the cutting device 23 is a longitudinal cutter.
  • the cut strips of material in the form of a first strip of material 25 and a second strip of material 26 are conveyed in parallel via a further deflection roller 41 and are then separated from one another by means of a transverse conveyor 32 in the form of a deflection roller.
  • the second material strip 26 is essentially completely glued by means of a gluing device 27, specifically at least over the entire length.
  • This gluing device 27 can, for example, omit the area of a seam, although this does not necessarily have to be the case.
  • the first strip of material 25 is conveyed separately from the second strip of material 26 and offset in the transverse direction to the conveying direction by means of the offset device 29, so that in the pair of pull rollers 28, by means of which the first strip of material 25 and the second strip of material 26 are combined, the material strips lie offset on top of one another 25 and 26 is achieved.
  • the material strips are present at this point, for example, as in 1 shown schematically.
  • a heating device 35 is then provided, by means of which the applied glue or the applied adhesive 17 is pre-hardened. If the seam has already been glued, the material strips 25 and 26 placed one on top of the other are fed to a formatting device 30 . If the seam gluing has not yet taken place, this takes place by means of the seam gluing device 36 which is arranged between the heating device 35 and the formatting device 30 .
  • the infeed finger 44 presses the strip of material down onto the format belt 43, which is guided endlessly through the format device 30 via corresponding deflection rollers 41.
  • the strips of material are formed into a round shape or an oval shape in a known manner.
  • the upper format is here designed as a heated upper format 37 to the glue or the Adhesive 17 further bind.
  • corresponding double-layer tubes can be cut to the desired length from the strand 31 formed in this way by means of the cutting device 38 .
  • tubular strand 31 is introduced into a strand machine 40 .
  • a filter tow 46 from a filter tow processing device which is 3 is not shown, but in 3 would be arranged to the right of the device shown, are guided above the format 30 over the device according to the invention and are fed by a pair of pull rollers 42 in the conveying direction 47 of the rod maker 40.
  • the filter tow 46 can then be arranged around the tubular strand 31, for example.
  • an adhesive for example PVA
  • an anchor seam device 45 is applied to the tubular strand 31 by means of an anchor seam device 45 .
  • a strip of wrapping material can accordingly be wound around the rod consisting of an inner tubular rod and a filter tow lying on the outside in a format device, and a corresponding filter can thus be produced.
  • a suitable filter is in 4 example shown schematically.
  • the filter is given the reference number 50 here.
  • the tube 10 is on the inside, a filter tow 48 is on the outside and a wrapping material 49 is arranged around it.
  • the gluing device 27 and the seam gluing device 36 can be used as flat nozzles, spin spray nozzles or according to EP 2 974 798 A1 be trained.
  • a flat application of adhesive or glue is preferably carried out here.
  • the heater 35 can be provided optionally. This essentially serves to pre-cure or pre-cure the adhesive.
  • the strip of material can be pre-bent immediately before the formatting device or immediately after the longitudinal cutter.
  • the double-layer tube can have an inner diameter of, for example, 3 mm to 8 mm.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

Die Erfindung betrifft ein doppellagiges Röhrchen der Tabak verarbeitenden Industrie und ein Verfahren zum Herstellen von doppellagigen Röhrchen der Tabak verarbeitenden Industrie.The invention relates to a double-layer tube for the tobacco processing industry and a method for producing double-layer tubes for the tobacco processing industry.

In der Tabak verarbeitenden Industrie werden Röhrchen, beispielsweise Pappröhrchen oder Papierröhrchen, verwendet, um beispielsweise besondere Filter, wie einen Rezeßfilter oder einen Hohlfilter, zur Verfügung zu stellen. Zudem dienen derartige Röhrchen auch als Bestandteil eines Diffusers der dafür sorgt, dass ein nikotinhaltiger Rauch vergleichmäßigt wird. Ein entsprechendes Röhrchen sollte eine gewisse Stabilität aufweisen, weswegen es bekannt ist, mehrwandige Papierrohre herzustellen.In the tobacco processing industry, tubes, for example cardboard tubes or paper tubes, are used in order, for example, to provide special filters such as a recess filter or a hollow filter. In addition, such tubes also serve as a component of a diffuser which ensures that a smoke containing nicotine is evened out. A corresponding tube should have a certain stability, which is why it is known to produce multi-walled paper tubes.

Aus DE 25 56 332 A1 sind ein Verfahren und eine Maschine zum Herstellen eines mehrwandigen Papierrohres für Rauchartikel-Mundstückhülsen bekannt, bei dem ein fortlaufender Papierstreifen, dessen Breite zumindest den doppelten Umfang des herzustellenden Rohres entspricht, stetig von einer Rolle abgezogen wird, wobei der Streifen in Längsrichtung durch Schwächen mit einer Falzlinie versehen wird, durch die der Streifen in zwei Streifenabschnitte unterteilt wird, wobei die beiden Streifenabschnitte entlang der Falzlinie zusammengefaltet werden, wobei der zusammengefaltete Streifen zu einem doppelwandigen Rohr geformt wird. Hierbei wird ein Verbinden der Enden des Papierstreifens durch Überlappung oder Unterlappung des Papierstreifens mit der gefalzten und gebogenen Kante hergestellt.Out DE 25 56 332 A1 discloses a method and a machine for manufacturing a multi-walled paper tube for smoking article tipping cases, in which a continuous strip of paper, the width of which is at least twice the circumference of the tube to be manufactured, is continuously drawn off a roll, with the strip running in the longitudinal direction is provided with a fold line by means of weaknesses, dividing the strip into two strip sections, the two strip sections being folded together along the fold line, the folded strip being formed into a double-walled tube. Here, the ends of the paper strip are joined by overlapping or underlapping the paper strip with the folded and bent edge.

EP 3 033 952 A2 offenbart ein doppellagiges Röhrchen der Tabak verarbeitenden Industrie sowie eine Vorrichtung und ein Verfahren zur Herstellung eines derartigen Röhrchens. EP 3 033 952 A2 discloses a double-layer tube for the tobacco processing industry and a device and a method for producing such a tube.

In US 7,243,659 B1 ist ein Produkt der Tabak verarbeitenden Industrie mit einem Filter offenbart, das einen Hohlzylinder aus einem stabilen Papiermaterial umfasst.In U.S. 7,243,659 B1 a product of the tobacco processing industry is disclosed with a filter comprising a hollow cylinder made of a stable paper material.

Es ist Aufgabe der vorliegenden Erfindung, die Qualität entsprechend hergestellter mehrlagiger Röhrchen zu erhöhen und hierzu insbesondere ein Verfahren anzugeben, mittels dessen die Qualität eines hergestellten Röhrchens verbessert werden kann.It is the object of the present invention to increase the quality of correspondingly manufactured multi-layer tubes and to this end in particular to specify a method by means of which the quality of a manufactured tube can be improved.

Gelöst wird diese Aufgabe durch ein doppellagiges Röhrchen der Tabak verarbeitenden Industrie, hergestellt aus einem ersten und einem zweiten Materialstreifenabschnitt, wobei der erste Materialstreifenabschnitt eine erste Breite aufweist und der zweite Materialstreifenabschnitt eine zweite Breite aufweist, wobei der erste und der zweite Materialstreifenabschnitt um einander derart gewickelt sind, dass der erste Materialstreifenabschnitt im Querschnitt kreisförmig oder oval geformt ist und die die erste Breite definierenden Kanten auf Stoß liegen, wobei der zweite Materialstreifenabschnitt im Querschnitt kreisförmig oder oval geformt ist und die die zweite Breite definierenden Kanten auf Stoß liegen, wobei der zweite Materialstreifenabschnitt außen um den ersten Materialstreifenabschnitt herum angeordnet ist, wobei die Stoßkanten des ersten und zweiten Materialstreifenabschnitts in Umfangsrichtung zueinander versetzt sind, wobei die Dicke des ersten und zweiten Materialstreifenabschnitts in einem Bereich von 38 µm bis 160 µm liegt, wobei zwischen dem ersten und dem zweiten Materialstreifenabschnitt ein Positionsklebstoff als vollflächige oder annähernd vollflächige Beleimung mit einer Auftragsdicke von 10 µm bis 80 µm vorgesehen ist.This object is achieved by a double-layer tube of the tobacco processing industry, made from a first and a second strip of material section, the first strip of material section having a first width and the second strip of material section having a second width, the first and the second strip of material section being wound around one another in such a way are that the first strip of material section has a circular or oval shape in cross section and the edges defining the first width butt together, the second strip of material section having a circular or oval shape in cross section and the edges defining the second width butt together, the second strip of material section arranged externally around the first strip of material portion, wherein the abutting edges of the first and second strip of material portion are offset from one another in the circumferential direction, with the thickness of the first and second material strip section being in a range from 38 µm to 160 µm, with a position adhesive between the first and the second material strip section as a full-area or almost full-area gluing with an application thickness of 10 µm up to 80 µm is provided.

Überraschenderweise wurde festgestellt, dass bei einer Kombination einer entsprechenden erfindungsgemäßen Dicke des Materialstreifenabschnitts mit einer erfindungsgemäßen Auftragsdicke des Positionsklebstoffs als Beleimung eine nachhaltig hohe Qualität von doppellagigen Röhrchen zur Verfügung steht.Surprisingly, it was found that with a combination of a corresponding thickness of the material strip section according to the invention with an application thickness of the position adhesive according to the invention as gluing, a sustained high quality of double-layered tubes is available.

Durch das erfindungsgemäße doppellagige Röhrchen der Tabak verarbeitenden Industrie haben die auf Stoß angeordneten Kanten des ersten und des zweiten Materialstreifenabschnitts an diesen Übergangsstellen eine sehr gut vorgebbare Rundheit, wodurch die Qualität des hergestellten doppellagigen Röhrchens im Vergleich zum Stand der Technik deutlich verbessert ist.Due to the double-layered tube of the tobacco processing industry according to the invention, the edges of the first and second material strip sections arranged in abutment have a very easily definable roundness at these transition points, as a result of which the quality of the double-layered tube produced is significantly improved compared to the prior art.

Unter einer Auftragsdicke wird im Rahmen der Erfindung die Dicke des Klebstoffs verstanden, die beim Auftragen vorherrscht. Hierzu sei beispielsweise auf die EP 2 974 798 A1 verwiesen, die eine Klebstoffspur bzw. Leimspur einer vorgebbaren Dicke herstellt. Mittels einer dort beschriebenen Vorrichtung zum Auftragen einer Leimspur bzw. Klebstoffspur auf einen Umhüllungsstreifen eines stabförmigen Produktes der Tabak verarbeitenden Industrie kann eine sehr genau definierte Auftragsdicke einer Leimspur bzw. eines Klebstoffauftrages erzielt werden.In the context of the invention, an application thickness is understood to mean the thickness of the adhesive that prevails during application. For this, for example, on the EP 2 974 798 A1 referred, which produces an adhesive track or glue line of a predetermined thickness. By means of a device described there for applying a line of glue or adhesive to a wrapping strip of a rod-shaped product of the tobacco processing industry, a very precisely defined application thickness of a line of glue or an application of adhesive can be achieved.

Der Positionsklebstoff ist im Rahmen der Erfindung der Klebstoff, der zwischen dem ersten und zweiten Materialstreifenabschnitt bzw. einem ersten und einem zweiten Materialstreifen angeordnet ist, der nach einem versetzten Zusammenführen des ersten und zweiten Materialstreifens einen Überlapp des ersten und zweiten Materialstreifens angibt. In Bezug auf den ersten und zweiten Materialstreifenabschnitt kann der Positionsklebstoff als der Klebstoff angesehen werden, der an dem größeren Umfangsabschnitt zwischen den Stoßkanten angeordnet ist. Auf dem kleineren Umfangsabschnitt zwischen den Stoßkanten ist ein sogenannter Nahtklebstoff vorgesehen.In the context of the invention, the position adhesive is the adhesive that is arranged between the first and second material strip section or a first and a second material strip, which indicates an overlap of the first and second material strip after the first and second material strip have been brought together in an offset manner. With respect to the first and second strip portions of material, the positional adhesive can be considered to be the adhesive located on the larger peripheral portion between the butt edges. on the smaller one A so-called seam adhesive is provided on the peripheral section between the abutting edges.

Die Auftragsdicke des Klebstoffs, insbesondere des Positionsklebstoffs und auch des Nahtklebstoffs, entspricht nicht der Klebstoffdicke nach dem Zusammenfügen der Materialstreifen bzw. dem gefertigten doppellagigen Röhrchen. Dies liegt darin begründet, dass zum einen ein Aushärten des Klebstoffes stattfindet und zum anderen auch Klebstoff in dem Materialstreifen aufgenommen wird.The application thickness of the adhesive, in particular the position adhesive and also the seam adhesive, does not correspond to the adhesive thickness after the material strips have been joined or the manufactured double-layer tube. The reason for this is that, on the one hand, the adhesive hardens and, on the other hand, adhesive is also absorbed in the strip of material.

Vorzugsweise ist die Dicke des ersten und des zweiten Materialstreifenabschnitts in einem Bereich von 100 µm bis 140 µm, insbesondere 120 µm bis 130 µm, und/oder liegt die Auftragsdicke des Positionsklebstoffs in einem Bereich von 10 µm bis 40 µm, insbesondere 15 µm bis 30 µm.The thickness of the first and second material strip section is preferably in a range from 100 μm to 140 μm, in particular 120 μm to 130 μm, and/or the application thickness of the position adhesive is in a range from 10 μm to 40 μm, in particular 15 μm to 30 μm µm.

Vorzugsweise ist ein Nahtklebstoff zwischen dem ersten und dem zweiten Materialabschnitt, insbesondere als vollflächige oder annähernd vollflächige Beleimung, mit einer Auftragsdicke von 40 µm bis 120 µm, insbesondere 60 µm bis 100 µm, vorgesehen.A seam adhesive is preferably provided between the first and the second material section, in particular as a full-surface or almost full-surface gluing, with an application thickness of 40 μm to 120 μm, in particular 60 μm to 100 μm.

Vorzugsweise ist die Auftragsdicke des Nahtklebstoffs größer als die Auftragsdicke des Positionsklebstoffs. Insbesondere ist vorgesehen, dass die Dicke des Nahtklebstoffs 1,5 bis 3mal so dick ist wie die Auftragsdicke des Positionsklebstoffs.The application thickness of the seam adhesive is preferably greater than the application thickness of the position adhesive. In particular, it is provided that the thickness of the seam adhesive is 1.5 to 3 times as thick as the applied thickness of the position adhesive.

Vorzugsweise liegt das Gewicht des ersten und/oder zweiten Materialstreifenabschnitts in einem Bereich von 27 g/m2 bis 125 g/m2, insbesondere 60 g/m2 bis 120 g/m2, insbesondere 70 g/m2 bis 110 g/m2. Besonders bevorzugt ist das Gewicht des ersten und/oder zweiten Materialstreifenabschnitts bzw. des ersten und/oder zweiten Materialstreifens bei 100 g/m2.The weight of the first and/or second material strip section is preferably in a range from 27 g/m 2 to 125 g/m 2 , in particular 60 g/m 2 to 120 g/m 2 , in particular 70 g/m 2 to 110 g/m 2 m2 . The weight of the first and/or second material strip section or of the first and/or second material strip is particularly preferred at 100 g/m 2 .

Vorzugsweise liegt der Versatz der Stoßkanten der ersten und zweiten Materialstreifenabschnitte zwischen 0,5 mm bis 3 mm, insbesondere zwischen 1,5 mm bis 2,5 mm.The offset of the abutting edges of the first and second material strip sections is preferably between 0.5 mm and 3 mm, in particular between 1.5mm to 2.5mm.

Vorzugsweise liegt das Verhältnis der zweiten Breite zur ersten Breite zwischen 52 zu 48 und 50,5 zu 49,5. Das Verhältnis der zweiten Breite zur ersten Breite bzw. der Materialstreifenabschnittsbreiten zueinander kann abhängig sein von dem Format des Produkts der Tabak verarbeitenden Industrie, das mit dem Röhrchen versehen werden soll. Beispielsweise kann bei einer Microslim-Zigarette mit einem Außendurchmesser von 4,5 mm das Verhältnis der zweiten Breite zur ersten Breite im Bereich von 51,5 zu 48,5 liegen. Bei einer Superslim-Zigarette mit einem Außendurchmesser von beispielsweise 5,3 mm kann dieses Verhältnis bei 51,5 zu 48,9 liegen und bei einer Kingsize-Zigarette mit einem Außendurchmesser von 7,4 mm kann dieses Verhältnis bei 50,5 zu 49,5 liegen.Preferably, the ratio of the second width to the first width is between 52:48 and 50.5:49.5. The ratio of the second width to the first width or the material strip section widths to one another can depend on the format of the product from the tobacco processing industry that is to be provided with the tube. For example, in the case of a Microslim cigarette with an outer diameter of 4.5 mm, the ratio of the second width to the first width can be in the range from 51.5 to 48.5. For example, for a super slim cigarette with an outside diameter of 5.3 mm, this ratio can be 51.5 to 48.9 and for a king-size cigarette with an outside diameter of 7.4 mm, this ratio can be 50.5 to 49. 5 lie.

Vorzugsweise ist ein innerer Stoß, der zwischen den Kanten des ersten Materialstreifenabschnitts liegt, von 0,0 mm vorgesehen und ein äußerer Stoß zwischen den Kanten des äußeren Materialstreifenabschnitts von 0,0 mm bis 0,4 mm vorgesehen.Preferably there is an internal seam between the edges of the first material strip portion of 0.0mm and an external seam between the edges of the outer material strip portion of 0.0mm to 0.4mm.

Die Breite des Materialabschnitts bzw. der Materialabschnitte kann je nach Format bei 26,5 mm bis 27,5 mm, 31,0 bis 32,5 mm und 44,5 mm bis 45,5 mm liegen. Die Materialabschnitte bzw. Materialstreifen können aus Papier sein, das die entsprechende Dicke und das entsprechende Gewicht wie oben angegeben hat. Das Papier kann einseitig oder beidseitig farbig sein, es können Patches beispielsweise aus Aluminium oder anderen Materialien aufgebracht sein oder das Papier kann mit einem Material bedampft sein, beispielsweise kann eine Alukaschierung vorgesehen sein. Es kann auch eine Prägung oder ein Aufdruck oder eine Stanzung vorgesehen sein. Als Klebstoff kann eine Klebstoffsorte oder auch mehrere, beispielsweise zwei Klebstoffsorten, vorgesehen sein. Insbesondere kann ein PVA-Kleber (Polyvinylacetat-Kleber) vorgesehen sein und gegebenenfalls zusätzlich noch ein weiterer Hotmelt-Kleber. Zusätzlich kann ein Flavour aufgebracht sein, bevorzugt auf den ersten Materialstreifenabschnitt. Vorzugsweise kann der Flavour dem Klebstoff zugegeben sein.Depending on the format, the width of the material section or sections can be 26.5 mm to 27.5 mm, 31.0 to 32.5 mm and 44.5 mm to 45.5 mm. The material sections or strips of material can be made of paper that has the appropriate thickness and weight as specified above. The paper can be colored on one or both sides, patches made of aluminum or other materials, for example, can be applied, or the paper can be coated with a material, for example an aluminum lamination can be provided. An embossing or an imprint or a stamping can also be provided. One type of adhesive or also several, for example two types of adhesive, can be provided as the adhesive. In particular, a PVA adhesive (polyvinyl acetate adhesive) can be provided and, optionally, an additional hotmelt adhesive. In addition, a flavor can be applied, preferably to the first material strip section. The flavor can preferably be added to the adhesive being.

Die Klebstoffmengen bzw. Leimmengen beim Nahtklebstoff können auch formatabhängig sein. Beispielsweise können bei einer Microslim-Zigarette 6 g/500 m bis 20 g/500 m, vorzugsweise 10 g/500 m Nahtklebstoff vorgesehen sein und bei einer Superslim-Zigarette bzw. Kingsize-Zigarette 25 g/500 m bis 55 g/500 m, vorzugsweise 45 g/500 m Klebstoff pro Nahtleimspur vorgesehen sein.The quantities of adhesive or glue used for seam adhesive can also depend on the format. For example, 6 g/500 m to 20 g/500 m, preferably 10 g/500 m, of seam adhesive can be provided for a Microslim cigarette and 25 g/500 m to 55 g/500 m for a Superslim cigarette or king-size cigarette , preferably 45 g/500 m adhesive per line of seam glue.

Die Klebstoffmengen des Positionsklebstoffs können auch in Abhängigkeit des Zigarettenformats angepasst sein. So kann beispielsweise bei einer Microslim-Zigarette eine Leimmenge von 10 g/500 m bis 60 g/500 m, vorzugsweise 20 g/500 m vorgesehen sein, bei einer Superslim-Zigarette eine Leimmenge von 25 g/500 m bis 70 g/500 m, vorzugsweise 60 g/500 m und bei einer Kingsize-Zigarette eine Leimmenge von 35 g/500 m bis 80 g/500 m, vorzugsweise 55 g/500 m vorgesehen sein.The adhesive amounts of the position adhesive can also be adjusted depending on the cigarette format. A quantity of glue of 10 g/500 m to 60 g/500 m, preferably 20 g/500 m, can be provided for a Microslim cigarette, for example, and a quantity of glue of 25 g/500 m to 70 g/500 m for a Superslim cigarette m, preferably 60 g/500 m and in the case of a king-size cigarette an amount of glue of 35 g/500 m to 80 g/500 m, preferably 55 g/500 m.

Das Leimauftragsbild ist vorzugsweise vollflächig.The glue application pattern is preferably full-surface.

Beim Klebstoff kann es sich beispielsweise um Polyvinylacetat (PVA oder PVAC) handeln. Hierbei handelt es sich um einen thermoplastischen Kunststoff. Es können auch andere Klebstoffe oder Leime Verwendung finden.The adhesive can be, for example, polyvinyl acetate (PVA or PVAC). This is a thermoplastic material. Other adhesives or glues can also be used.

Erfindungsgemäß ist zwischen dem ersten und dem zweiten Materialstreifenabschnitt ein Klebstoff im Wesentlichen vollflächig oder vollflächig vorgesehen. Unter einer annähernd vollflächigen Beleimung wird insbesondere eine Beleimung verstanden, bei der die Fläche eines Materialstreifenabschnitts zu wenigsten 80%, vorzugsweise wenigstens 90%, insbesondere vorzugsweise wenigstens 95% vollflächig beleimt ist.According to the invention, an adhesive is provided between the first and the second material strip section, essentially over the entire surface or over the entire surface. An almost full-surface gluing is understood in particular as a gluing in which the surface of a material strip section is glued to at least 80%, preferably at least 90%, particularly preferably at least 95% over the entire surface.

Im Rahmen der Erfindung bedeutet ein auf Stoß Liegen von Kanten des jeweiligen Materialstreifenabschnitts, dass diese Kanten aneinander stoßen oder einen kleinen Abstand voneinander haben.Within the scope of the invention, if the edges of the respective material strip section are in abutting relationship, this means that these edges abut one another or are at a small distance from one another.

Vorzugsweise ist Klebstoff zwischen wenigstens zwei Kanten insbesondere den Stirnseiten der Kanten, vorgesehen. Insbesondere kann Klebstoff vorgesehen sein, um eine Lücke zwischen den Kanten auszufüllen.Adhesive is preferably provided between at least two edges, in particular the end faces of the edges. In particular, glue can be provided to fill a gap between the edges.

Besonders bevorzugt ist es, wenn Klebstoff zwischen allen Kanten vorgesehen ist. Die möglicherweise vorliegende Lücke zwischen den Kanten ist somit vorzugsweise auch mit Klebstoff befüllt. Die Dicke der Befüllung ist hierbei so, dass der Klebstoff mit der Oberfläche des Materialstreifenabschnitts vorzugsweise fluchtet.It is particularly preferred if adhesive is provided between all edges. The possibly present gap between the edges is thus preferably also filled with adhesive. The thickness of the filling is such that the adhesive is preferably flush with the surface of the material strip section.

Vorzugsweise ist die erste Breite der Materialstreifenabschnitte kleiner als die zweite Breite. Durch diese Maßnahme ist es möglich, ein doppellagiges Röhrchen anzugeben, das insbesondere bei der äußeren Lage eine kleine Lücke oder keine Lücke zwischen den Kanten bzw. den Stoßkanten aufweist.The first width of the material strip sections is preferably smaller than the second width. This measure makes it possible to specify a double-layered tube which, particularly in the outer layer, has a small gap or no gap between the edges or the abutting edges.

Vorzugsweise ist der erste und/oder der zweite Materialstreifenabschnitt aus Papier oder Pappe.The first and/or the second material strip section is preferably made of paper or cardboard.

Ein besonders stabiles doppellagiges Röhrchen der Tabak verarbeitenden Industrie ist dann zu erzielen, wenn vorzugsweise die Stoßkanten des ersten und zweiten Materialstreifenabschnitts radial nicht fluchten bzw. radial zueinander nicht fluchten. Dieses bedeutet, dass die Stoßkanten des ersten und zweiten Materialstreifenabschnitts in Umfangsrichtung zueinander versetzt sind. Die Stoßkanten bzw. die entsprechenden Lücken zwischen den Stoßkanten liegen dann in einem radialen Winkelabstand zueinander. Der radiale Winkelabstand liegt bevorzugt zwischen 2° und 80°, insbesondere zwischen 5° und 45°, besonders bevorzugt zwischen 10° und 45°.A particularly stable, double-layer tube for the tobacco processing industry can be achieved if preferably the abutting edges of the first and second material strip sections are not radially aligned or are not radially aligned with one another. This means that the abutting edges of the first and second material strip sections are offset from one another in the circumferential direction. The abutting edges or the corresponding gaps between the abutting edges are then at a radial angular distance from one another. The radial angular distance is preferably between 2° and 80°, in particular between 5° and 45°, particularly preferably between 10° and 45°.

Vorzugsweise entspricht die Dicke des ersten Materialstreifenabschnitts der Dicke des zweiten Materialstreifenabschnitts. In diesem Fall ist die Qualität des hergestellten Röhrchens besonders hoch.The thickness of the first material strip section preferably corresponds to the thickness of the second material strip section. In this case, the quality of the tube produced is particularly high.

Für den Fall, dass die Dicke des zweiten Materialstreifenabschnitts kleiner ist als die Dicke des ersten Materialstreifenabschnitts, kann dafür gesorgt werden, dass der verwendete Klebstoff schneller abbindet, so dass die Herstellungsgeschwindigkeit erhöht werden kann.In the event that the thickness of the second material strip section is smaller than the thickness of the first material strip section, it can be ensured that the adhesive used sets faster, so that the production speed can be increased.

Es wird eine Vorrichtung zur Herstellung von doppellagigen Röhrchen der Tabak verarbeitenden Industrie angegeben, die die folgenden Merkmale umfasst:

  • eine Materialstreifenzuführvorrichtung,
  • eine Schneidvorrichtung zum längsaxialen Schneiden eines Basismaterialstreifens in einen ersten Materialstreifen mit einer ersten Breite und einen zweiten Materialstreifen mit einer zweiten Breite,
  • eine Beleimvorrichtung, mittels der der erste und/oder zweite Materialstreifen beleimbar ist,
  • eine Zusammenführvorrichtung, mittels der der erste und der zweite Materialstreifen zum Verkleben miteinander so zusammen geführt werden, so dass der erste und der zweite Materialstreifen versetzt zueinander übereinander liegen, und
  • eine Formatvorrichtung, in der aus den zusammengeführten ersten und zweiten Materialstreifen ein rohrförmiger Strang hergestellt wird.
A device for producing double-layer tubes for the tobacco processing industry is specified, which has the following features:
  • a material strip feeding device,
  • a cutting device for longitudinally axial cutting of a strip of base material into a first strip of material having a first width and a second strip of material having a second width,
  • a gluing device, by means of which the first and/or second strip of material can be glued,
  • a merging device, by means of which the first and the second strip of material are brought together for gluing to one another in such a way that the first and the second strip of material lie offset to one another on top of one another, and
  • a format device in which a tubular strand is produced from the combined first and second strips of material.

Bei der Materialstreifenzuführvorrichtung kann es sich um Zuführrollen handeln, über die ein Materialstreifen einer entsprechenden Breite gefördert werden kann. Üblicherweise wird ein derartiger Materialstreifen von einer Materialstreifenbobine angezogen und in die entsprechende Vorrichtung gefördert.The material strip feed device can be feed rollers over which a material strip of a corresponding width can be conveyed. Such a material strip is usually attracted by a material strip bobbin and conveyed into the corresponding device.

Bei der Schneidvorrichtung, die sich in Förderrichtung des Materialstreifens anschließt, handelt es sich um einen Längsschneider, der den Materialstreifen in längsaxialer Richtung schneidet.The cutting device, which follows in the conveying direction of the material strip, is a slitter that cuts the material strip in the longitudinal axial direction.

Die sich an die Schneidvorrichtung anschließende Beleimvorrichtung beleimt im Wesentlichen vollflächig wenigstens einen der beiden Materialstreifen, d.h. den ersten und/oder den zweiten Materialstreifen, wobei an dieser Stelle auch ein Bereich beleimt werden kann, der als Naht dienen kann, d.h. bei dem in einer späteren Formatvorrichtung ein Endabschnitt des zweiten Materialstreifens zum Verschließen einer Naht auf den ersten Materialstreifen gedrückt wird. Dieser Bereich kann allerdings auch in einem nachfolgenden Schritt entsprechend beleimt werden bzw. mit Klebstoff versehen werden. Bei der Beleimvorrichtung kann es sich um eine Beleimvorrichtung handeln, die einer Beleimvorrichtung entspricht, die in der EP 2 974 798 A1 beschrieben ist.The gluing device connected to the cutting device applies glue to at least one of the two material strips, ie the first and/or the second material strip, essentially over the entire surface Format device an end portion of the second strip of material is pressed to close a seam on the first strip of material. However, this area can also be appropriately glued or provided with adhesive in a subsequent step. The gluing device can be a gluing device that corresponds to a gluing device that is EP 2 974 798 A1 is described.

An die Beleimvorrichtung schließt sich in Förderrichtung eine Zusammenführvorrichtung an, die im Rahmen der Erfindung vorzugsweise eine Papierlagenverstellvorrichtung bzw. Papierlageneinstellvorrichtung umfasst, mittels der die seitliche Lage, d.h. eine relative Lage des ersten und des zweiten Materialstreifens zueinander, und zwar quer zur Förderrichtung, eingestellt werden kann, um nur einen teilweisen Überlapp des ersten und zweiten Materialstreifens vorzusehen, so dass von der Breite dieser Materialstreifen gesehen ein Teil nach links und ein Teil nach rechts übersteht.The gluing device is followed in the conveying direction by a merging device which, within the scope of the invention, preferably comprises a paper layer adjustment device or paper layer setting device, by means of which the lateral position, i.e. a relative position of the first and second material strip to one another, transverse to the conveying direction, can be set can, in order to provide only a partial overlap of the first and second strip of material, so that viewed from the width of these strips of material a part protrudes to the left and a part to the right.

Die Vorrichtung zur Herstellung von doppellagigen Röhrchen der Tabak verarbeitenden Industrie stellt zunächst erst einmal einen rohrförmigen Strang her aus wenigstens zwei Lagen eines Materialstreifens. Dieser rohrförmige Strang kann dann anschließend abgelängt werden, beispielsweise durch eine übliche Messervorrichtung. Es kann auch zunächst vorgesehen sein, den hergestellten rohrförmigen Strang einer weiteren Maschine zuzuführen, beispielsweise einer Filterstrangmaschine oder einer Tabakstrangmaschine, um um den rohrförmigen Strang und/oder in den rohrförmigen Strang hinein ein Filtermaterial bzw. Filtersegment und/oder ein Tabakmaterial bzw. Tabaksegment einzubringen. Am Ende kann dann ein Umhüllungsmaterialstreifen um den dann gebildeten Strang herum gewickelt werden, um dann abschließend entsprechende Stäbe mit den darin enthaltenen doppellagigen Röhrchen abzulängen.The device for producing double-layered tubes in the tobacco processing industry first of all produces a tubular strand from at least two layers of a strip of material. This tubular strand can then be cut to length, for example using a conventional knife device. Provision can also initially be made for feeding the tubular rod produced to a further machine, for example a filter rod machine or a tobacco rod machine, in order to introduce a filter material or filter segment and/or a tobacco material or tobacco segment around the tubular rod and/or into the tubular rod. At the end, a strip of wrapping material can then be wound around the strand then formed, in order then finally to cut the corresponding rods with the double-layer tubes contained therein to length.

Zudem ist eine Separiervorrichtung vorgesehen, die den ersten Materialstreifen oder den zweiten Materialstreifen von dem jeweils anderen Materialstreifen in Förderrichtung nach der Schneidvorrichtung räumlich trennt. Hierdurch kann eine sehr genaue Positionierung und Zusammenführung des ersten und des zweiten Materialstreifens erfolgen, so dass die relative seitliche Lage zueinander genau eingestellt werden kann. Zudem wird für diesen Fall auch eine saubere Beleimung nur eines Materialstreifens ermöglicht.In addition, a separating device is provided, which spatially separates the first strip of material or the second strip of material from the respective other strip of material in the conveying direction downstream of the cutting device. As a result, the first and second material strips can be positioned and brought together very precisely, so that the lateral position relative to one another can be set precisely. In addition, clean gluing of only one strip of material is also possible in this case.

Hierbei ist es insbesondere bevorzugt, wenn eine erste Fläche des ersten und eine erste Fläche des zweiten Materialstreifens, die in die gleiche Richtung zeigen, nach dem Zusammenfügen des ersten und zweiten Materialstreifens immer noch in die gleiche Richtung zeigen. Es kann alternativ auch vorgesehen sein, den ersten und zweiten Materialstreifen nach dem Schneiden relativ zueinander um 180° zu verdrehen, damit eine vor dem Schneiden vorliegende erste Oberfläche, die in zwei erste Oberflächen mit gleicher Orientierung geschnitten wird, so zusammengefügt wird, dass die ersten Oberflächen des ersten und zweiten Materialstreifens zueinander angeordnet sind.It is particularly preferred here if a first surface of the first and a first surface of the second strip of material, which point in the same direction, still point in the same direction after the first and second strip of material have been joined together. Alternatively, provision can also be made for the first and second material strips to be rotated by 180° relative to one another after cutting, so that a first surface present before cutting, which is cut into two first surfaces with the same orientation, is joined in such a way that the first Surfaces of the first and second strip of material are arranged to each other.

Außerdem ist zwischen der Zusammenführvorrichtung und der Formatvorrichtung eine erste Heizvorrichtung vorgesehen. Mittels der ersten Heizvorrichtung kann der Klebstoff vorausgehärtet werden, so dass der erste und der zweite Materialstreifen zusammengehalten werden und noch verformbar sind, und zwar vorzugsweise so, dass die Form nach einem Verbiegen von alleine schon im Wesentlichen hält.In addition, a first heating device is provided between the combining device and the formatting device. The adhesive can be pre-cured by means of the first heating device, so that the first and the second strip of material are held together and are still deformable, preferably in such a way that the shape already essentially holds itself after bending.

Vorzugsweise sieht die Beleimvorrichtung eine vollflächige oder annähernd vollflächige Beleimung des ersten und/oder des zweiten Materialstreifens vor.The gluing device preferably provides for gluing the entire surface or almost the entire surface of the first and/or the second strip of material.

Vorzugsweise ist zwischen der Zusammenführvorrichtung und der Formatvorrichtung, insbesondere zwischen der ersten Heizvorrichtung und der Formatvorrichtung, eine Nahtbeleimungsvorrichtung vorgesehen. Die Nahtbeleimungsvorrichtung wird dann verwendet, wenn die vorherige Beleimvorrichtung keine vollflächige Beleimung vorsieht. Gemeint ist die Beleimung, die nicht in der queraxialen Richtung vollflächig vorgenommen wurde und somit erst mittels der Nahtbeleimungsvorrichtung ein Leim bzw. ein Klebstoff aufgetragen wird, der zum Schließen der Naht dient. Quer zur Längsachse sollte vorzugsweise eine vollständige Beleimung durch die Beleimvorrichtung und auch die Nahtbeleimungsvorrichtung vorgenommen werden.A seam gluing device is preferably provided between the merging device and the formatting device, in particular between the first heating device and the formatting device. The seam gluing device is used when the previous gluing device does not provide full-surface gluing. What is meant is the gluing that was not carried out over the entire surface in the transverse axial direction and thus a glue or adhesive is only applied by means of the seam gluing device, which serves to close the seam. Complete gluing should preferably be carried out transversely to the longitudinal axis by the gluing device and also the seam gluing device.

Vorzugsweise umfasst die Formatvorrichtung eine zweite Heizvorrichtung. Die zweite Heizvorrichtung kann beispielsweise in dem Oberformat der Formatvorrichtung angeordnet sein und dient insbesondere vorzugsweise zum vollständigen Abbinden des Nahtklebstoffs.The format device preferably comprises a second heating device. The second heating device can be arranged, for example, in the upper format of the format device and serves in particular preferably for the complete setting of the seam adhesive.

Es kann auch eine alternative Variante vorgesehen sein, beispielsweise die gezeigte Vorrichtung einer üblichen Strangmaschine vorzuschalten und in der üblichen Strangmaschine eine üblicherweise verwendete Nahtplätte als weitere Heizvorrichtung zu verwenden. In dieser bevorzugten Ausführungsform einer entsprechenden Maschine der Tabak verarbeitenden Industrie kann dann mit einer deutlich verbesserten Laufstabilität ein entsprechender rohrförmiger Strang und damit entsprechende doppellagige Röhrchen der Tabak verarbeitenden Industrie hergestellt werden.An alternative variant can also be provided, for example connecting the device shown upstream of a conventional rod making machine and using a commonly used seam plate as an additional heating device in the conventional rod making machine. In this preferred embodiment of a corresponding machine in the tobacco processing industry, a corresponding tubular strand and thus corresponding double-layer tubes for the tobacco processing industry can then be produced with a significantly improved running stability.

Es ist eine Ablängvorrichtung stromabwärts der Formatvorrichtung vorgesehen, um aus dem rohrförmigen Strang Röhrchen abzuschneiden.A cutting device is provided downstream of the formatting device in order to cut small tubes from the tubular strand.

Wie erwähnt, ist eine Maschine der Tabak verarbeitenden Industrie mit einer erfindungsgemäßen Vorrichtung versehen, wobei eine Strangmaschine der erfindungsgemäßen Vorrichtung nachgeschaltet ist.As mentioned, a machine in the tobacco processing industry is provided with a device according to the invention, with a rod machine being connected downstream of the device according to the invention.

Die Aufgabe wird ferner durch ein Verfahren zum Herstellen von doppellagigen Röhrchen der Tabak verarbeitenden Industrie gelöst, wobei die folgenden Verfahrensschritte vorgesehen sind:

  • Fördern eines Basismaterialstreifens in längsaxialer Förderrichtung,
  • längsaxiales Schneiden des Basismaterialstreifens in einen ersten Materialstreifen mit einer ersten Breite und einen zweiten Materialstreifen mit einer zweiten Breite,
  • Beleimen wenigstens des zweiten Materialstreifens,
  • versetztes Zusammenführen des ersten und des zweiten Materialstreifens, so dass der erste und der zweite Materialstreifen übereinander gelegt werden, wobei in dem Bereich, in dem der erste und der zweite Materialstreifen miteinander durch das versetzte Zusammenführen verklebt werden beim Beleimen ein Positionsklebstoff mit einer Auftragsdicke zwischen 10 µm und 80 µm, insbesondere zwischen 10 µm und 40 µm, insbesondere zwischen 15 µm und 30 µm, aufgetragen wird,
  • Formen der übereinander gelegten Materialstreifen in einen rohrförmigen Strang und
  • Ablängen des Strangs in doppellagige Röhrchen.
The object is also achieved by a method for producing double-layer tubes in the tobacco processing industry, the following method steps being provided:
  • Conveying a strip of base material in the longitudinal axial conveying direction,
  • longitudinal axial cutting of the base material strip into a first material strip with a first width and a second material strip with a second width,
  • gluing at least the second strip of material,
  • staggered bringing together of the first and second strip of material, so that the first and second strip of material are placed one on top of the other, with a position adhesive with an application thickness between 10 µm and 80 µm, in particular between 10 µm and 40 µm, in particular between 15 µm and 30 µm, is applied,
  • forming the superimposed strips of material into a tubular strand and
  • Cut the strand into double-layered tubes.

Vorzugsweise geschieht das Beleimen vollflächig oder annähernd vollflächig. Eine Unterbrechung der Beleimung auf der Fläche kann beispielsweise dort vorliegen, wo eine Naht des anderen Umhüllungsmaterialstreifens liegt. Insbesondere kann dort, wo eine Lücke des benachbarten Umhüllungsmaterialstreifens bzw. des benachbarten ersten oder zweiten Materialstreifens liegt, und zwar zwischen den Kanten bzw. Stoßkanten des jeweiligen Materialstreifens, eine Leimunterbrechung vorliegen. An dieser Stelle kann allerdings auch eine Beleimung vorgesehen sein, so dass tatsächlich eine vollflächige Beleimung geschieht.The gluing preferably takes place over the entire surface or almost over the entire surface. An interruption in the gluing on the surface can be present, for example, where a seam of the other strip of wrapping material lies. In particular, where there is a gap in the adjacent strip of wrapping material or in the adjacent first or second strip of material, namely between the edges or abutting edges of the respective strip of material, there can be an interruption in the glue. However, gluing can also be provided at this point, so that gluing actually occurs over the entire surface.

Vorzugsweise bedeutet ein versetztes Zusammenführen ein in der Breite der Streifen zueinander versetztes Verkleben.Preferably, staggered merging means gluing that is offset relative to one another in the width of the strips.

Vorzugsweise wird oder werden ein oder zwei Bereiche auf dem zweiten Materialstreifen mit einem Nahtklebstoff einer Auftragsdicke von 40 µm bis 120 µm, insbesondere 60 µm bis 100 µm, versehen.One or two areas on the second strip of material are preferably provided with a seam adhesive with an application thickness of 40 μm to 120 μm, in particular 60 μm to 100 μm.

Vorzugsweise ist der erste Materialstreifen schmaler als der zweite Materialstreifen, wobei der zweite Materialstreifen außen um den ersten Materialstreifen angeordnet wird oder ist, wobei insbesondere das Verhältnis einer zweiten Breite des zweiten Materialstreifens zu einer ersten Breite des ersten Materialstreifens zwischen 52 zu 48 und 50,5 zu 49,5 liegt.Preferably, the first strip of material is narrower than the second strip of material, wherein the second strip of material is or is arranged externally around the first strip of material, wherein in particular the ratio of a second width of the second strip of material to a first width of the first strip of material is between 52:48 and 50.5 to 49.5.

Vorzugsweise wird eine Sorte Klebstoff für den Positionsklebstoff und eine andere Sorte Klebstoff für den Nahtklebstoff verwendet. Es kann auch eine Sorte Klebstoff sowohl für den Positionsklebstoff als auch den Nahtklebstoff vorgesehen sein.Preferably, one type of adhesive is used for the position adhesive and another type of adhesive is used for the seam adhesive. One type of adhesive can also be provided for both the position adhesive and the seam adhesive.

Vorzugsweise werden die zusammengeführten Materialstreifen beim und/oder nach dem Formen erwärmt. Hierdurch härtet dann der Klebstoff insbesondere vollständig aus.Preferably, the material strips brought together are heated during and/or after shaping. As a result, the adhesive then hardens in particular completely.

Vorzugsweise wird der Nahtklebstoff vor dem Zusammenführen der Materialstreifen aufgetragen. Der Nahtklebstoff kann also zusammen mit dem Positionsklebstoff aufgetragen werden bzw. gleichzeitig mit diesem aufgetragen werden, also vor einem Zusammenführen der Materialstreifen. Alternativ kann dieses nach dem Zusammenführen der Materialstreifen oder sowohl davor als auch danach geschehen. In der letzten Variante kann ein erster Nahtklebstoff in dem Moment aufgetragen werden, wenn auch der Positionsklebstoff aufgetragen wird und eine weitere oder ergänzende Nahtklebstoffauftragung stattfinden, wenn die Materialstreifen zusammengeführt worden sind.The seam adhesive is preferably applied before the strips of material are brought together. The seam adhesive can therefore be applied together with the position adhesive or applied simultaneously with it, ie before the material strips are brought together. Alternatively, this after merging the strip of material or happen both before and after. In the last variant, a first seam adhesive can be applied at the same time as the position adhesive is being applied and a further or supplementary seam adhesive application can take place when the strips of material have been brought together.

Vorzugsweise werden mehrlagige, insbesondere doppellagige Röhrchen aus Materialstreifenabschnitten, die vorzugsweise aus Pappe oder Papier sind, hergestellt, bei denen es keine überlappenden Nähte gibt. Hierdurch werden Röhrchen mit einer sehr konstanten Dicke hergestellt bzw. zur Verfügung gestellt, wodurch qualitativ sehr hochwertige doppellagige Röhrchen der Tabak verarbeitenden Industrie ermöglicht sind. Aufgrund des Verzichts auf die Nahtüberlappung wird eine sehr gute Rundheit erzielt. Das doppellagige Röhrchen wird aus einem vorzugsweise annähernd doppelt so breiten Papierstreifen hergestellt, und zwar im Vergleich zum Umfang des Röhrchens, wobei der Papierstreifen längs in zwei leicht unterschiedlich breite Streifen geschnitten wird, wobei die beiden erzeugten Papierstreifen auf getrennten Wegen anschließend geführt werden und vorzugsweise der breitere und später außen liegende Streifen beleimt wird, wobei vorzugsweise alle Leimspuren gleichzeitig aufgetragen werden. Die beiden Papierstreifen werden dann übereinander gelegt und die übereinander gelegten Papierstreifen dem Format einer Formatvorrichtung zugeführt, um hieraus einen rohrförmigen Strang zu bilden und die Naht zu schließen.Multi-layer, in particular double-layer, tubes are preferably produced from material strip sections, which are preferably made of cardboard or paper, in which there are no overlapping seams. As a result, tubes are produced or made available with a very constant thickness, as a result of which very high-quality, double-layered tubes are made possible in the tobacco-processing industry. Because there is no seam overlap, a very good roundness is achieved. The double-layer tube is made from a strip of paper, preferably approximately twice as wide, compared to the circumference of the tube, with the strip of paper being cut lengthwise into two strips of slightly different widths, with the two strips of paper produced then being guided on separate paths and preferably the wider and later outer strips are glued, with all traces of glue preferably being applied at the same time. The two paper strips are then superimposed and the superimposed paper strips fed to the format of a format device to form a tubular strand and to close the seam.

Vorzugsweise ist die vorgestellte Vorrichtung Bestandteil einer modularen Einschubvorrichtung, die beispielsweise vorzugsweise zwischen einer Strangmaschine der Tabak verarbeitenden Industrie und einer Filtertowaufbereitungsmaschine angeordnet werden kann.The device presented is preferably part of a modular slide-in device which can be arranged, for example, preferably between a rod machine in the tobacco processing industry and a filter tow processing machine.

Während der rohrförmige Strang aus doppellagigen Materialstreifen hergestellt wird, wird ein entsprechend aufbereitetes Filtertow durch eine entsprechende Einschubvorrichtung und oberhalb der Formatvorrichtung gefördert und in einen Einlaufbereich der Strangmaschine eingebracht. Der rohrförmige Strang wird auch in den Einlaufbereich eingebracht, so dass das Filtertow beispielsweise um oder in den rohrförmigen Strang eingebracht werden kann, um so Filterstäbe herstellen zu können.While the tubular strand is being produced from double-layered strips of material, a suitably prepared filter tow is conveyed through a corresponding push-in device and above the formatting device and introduced into an infeed area of the strand machine. The tubular strand is also introduced into the inlet area, so that the filter tow can be introduced around or into the tubular strand, for example, in order to be able to produce filter rods in this way.

Es kann auch vorgesehen sein, dass kein weiteres Filtertowmaterial verwendet wird, sondern die Strangmaschine dazu dient, ein dreilagiges Röhrchen herzustellen. Hierbei wird die dritte Lage als dritter Materialstreifen über einen Papierlauf der Strangmaschine im Einzugsbereich oder Einlauf der Formatvorrichtung zugeführt. Im Papierlauf vor der Formatvorrichtung wird der dritte Materialstreifen, insbesondere vollflächig, verleimt und auf Stoß um den rohrförmigen Strang gewickelt, also nachdem der rohrförmige Strang schon hergestellt wurde. Hierbei sind die Stoßkanten des Stoßes des dritten Materialstreifens wenigstens versetzt zu der Stoßkante des zweiten Materialstreifens. Der dritte Materialstreifen kann aus einem anderen Material sein als der erste und der zweite Materialstreifen. Beispielsweise kann der dritte Materialstreifen aus Papier, Folie, gecrimptem Papier, elektrisch leitendem Material oder Tabakfolie sein.Provision can also be made for no further filter tow material to be used, but for the rod machine to produce a three-layer tube. Here, the third layer is fed as a third strip of material via a paper run of the rod machine in the infeed area or infeed of the format device. In the paper path in front of the formatting device, the third strip of material is glued, in particular over the entire surface, and wrapped around the tubular strand in abutting fashion, ie after the tubular strand has already been produced. The abutting edges of the abutment of the third strip of material are at least offset relative to the abutting edge of the second strip of material. The third strip of material may be of a different material than the first and second strips of material. For example, the third strip of material can be paper, foil, crimped paper, electrically conductive material or tobacco foil.

Es könnte auch eine Zweistrangfiltertowaufbereitungsvorrichtung verwendet werden, um einen Koaxialfilter aus dem doppellagigen Röhrchen bzw. dem doppellagigen rohrförmigen Strang herzustellen. Ein Filtertowstrang wird dann um den doppellagigen rohrförmigen Strang angeordnet und der andere Filtertowstrang wird in den rohrförmigen Strang eingebracht. So kann nach einem entsprechenden Ablängen in doppellagige Röhrchen ein Koaxialfilter hergestellt werden. Hierzu wird beispielsweise auf dem hergestellten rohrförmigen Strang aus doppellagigen Materialstreifen eine Ankernaht in Form eines Klebstoffes aufgebracht, damit das Filtertow auch auf dem rohrförmigen Strang hält. Bei der Herstellung des Koaxialfilters können das erste Filtermaterial und das zweite Filtermaterial unterschiedlich zueinander sein.A two-string filter tow preparation apparatus could also be used to make a coaxial filter from the double-layer tube or tubular strand. One string of filter tow is then placed around the double layer tubular string and the other string of filter tow is inserted into the tubular string. A coaxial filter can thus be produced after cutting to length into double-layered tubes. For this purpose, for example, an anchoring seam in the form of an adhesive is applied to the tubular strand produced from double-layered material strips, so that the filter tow also holds onto the tubular strand. When manufacturing the coaxial filter, the first filter material and the second filter material can be different from each other.

Vorzugsweise wird ein doppellagiges Röhrchen, das vorstehend als erfindungsgemäß oder bevorzugt beschrieben ist, als mundseitiges Endstück oder als Mittelstück zwischen zwei Filtersegmenten eines Filters einer Filterzigarette oder eines Filters eines stabförmigen Artikels der Tabak verarbeitenden Industrie verwendet. Hierbei wird unter einem stabförmigen Artikel der Tabak verarbeitenden Industrie insbesondere eine Zigarette bzw. Filterzigarette verstanden aber auch ein Zigarillo, eine Zigarre, ein HnB-Produkt (Heat not Burn) oder eine E-Zigarette verstanden. Weitere Merkmale der Erfindung werden aus der Beschreibung erfindungsgemäßer Ausführungsformen zusammen mit den Ansprüchen und den beigefügten Zeichnungen ersichtlich.A double-layer tube, which is described above as being according to the invention or preferred, is preferably used as the mouth end piece or used as a middle piece between two filter segments of a filter of a filter cigarette or a filter of a rod-shaped article of the tobacco processing industry. A rod-shaped article of the tobacco processing industry is understood to mean in particular a cigarette or filter cigarette, but also a cigarillo, a cigar, an HnB product (heat not burn) or an e-cigarette. Further features of the invention will be apparent from the description of embodiments of the invention taken together with the claims and the accompanying drawings.

Die Erfindung wird nachstehend ohne Beschränkung des allgemeinen Erfindungsgedankens anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen beschrieben, wobei bezüglich aller im Text nicht näher erläuterten erfindungsgemäßen Einzelheiten ausdrücklich auf die Zeichnungen verwiesen wird. Es zeigen:

Fig. 1
eine schematische Schnittdarstellung durch einen doppellagigen Materialstreifen in einer Schnittebene quer zur Längsachse der Materialstreifen,
Fig. 2
ein entsprechend hergestelltes erfindungsgemäßes doppellagiges Röhrchen in einer schematischen Schnittdarstellung,
Fig. 3
eine erfindungsgemäße Vorrichtung zur Herstellung von doppellagigen Röhrchen in schematischer Darstellung und
Fig. 4
eine schematische Schnittdarstellung durch einen Filter, der ein doppellagiges Röhrchen aufweist.
The invention is described below without restricting the general inventive concept using exemplary embodiments with reference to the drawings, with express reference being made to the drawings with regard to all details according to the invention that are not explained in more detail in the text. Show it:
1
a schematic sectional view through a double-layer material strip in a sectional plane transverse to the longitudinal axis of the material strip,
2
a correspondingly manufactured double-layer tube according to the invention in a schematic sectional view,
3
a device according to the invention for the production of double-layer tubes in a schematic representation and
4
a schematic sectional view through a filter having a double-layer tube.

In den Zeichnungen sind jeweils gleiche oder gleichartige Elemente und/oder Teile mit denselben Bezugsziffern versehen, so dass von einer erneuten Vorstellung jeweils abgesehen wird.In the drawings, elements and/or parts that are the same or of the same type are provided with the same reference numbers, so that they are not presented again in each case.

Fig. 1 zeigt in einer schematischen Schnittdarstellung quer zur Längsachse von zwei Materialstreifen 11 und 12 den Zustand des ersten Materialstreifens 11 und des zweiten Materialstreifens 12, nachdem diese zusammengefügt worden sind. Hierbei ist zu erkennen, dass der erste Materialstreifen 11 auf seiner Oberseite einen Positionsklebstoff 17, beispielsweise einen Leim, aufweist. Auf den Positionsklebstoff 17 aufgelegt ist der zweite Materialstreifen 12. 1 shows in a schematic sectional representation of two material strips 11 and 12 transversely to the longitudinal axis, the state of the first material strip 11 and the second material strip 12 after they have been joined. It can be seen here that the first strip of material 11 has a position adhesive 17, for example a glue, on its upper side. The second material strip 12 is placed on the position adhesive 17.

Der erste Materialstreifen 11 weist links und rechts Kanten 13 und 14 auf und der zweite Materialstreifen 12 links und rechts Kanten 15 und 16.The first strip of material 11 has edges 13 and 14 on the left and right and the second strip of material 12 has edges 15 and 16 on the left and right.

Es ist zudem auf dem ersten Materialstreifen 11 eine Nahtbeleimung 18 vorgenommen worden, die dazu dient, mit dem rechts über den ersten Materialstreifen 11 überstehenden Teil des zweiten Materialstreifens 12 eine Verklebung vorzusehen. Es können auch Nahtbeleimungsstreifen vorgesehen sein, beispielsweise ein Nahtbeleimungsstreifen 18 auf der einen Seite des ersten Materialstreifens 11 und ein weiterer Nahtbeleimungsstreifen auf der entgegengesetzten Seite des Materialstreifens 11. Die Beleimung 17 kann zur gleichen Zeit wie die Beleimung 18 vorgenommen werden oder, wie vorstehend schon angegeben, im Nachhinein, und zwar vor der Formung des Röhrchens bzw. des rohrförmigen Strangs, in einer Formatvorrichtung.In addition, a seam gluing 18 has been made on the first strip of material 11, which serves to provide an adhesive bond with the part of the second strip of material 12 that protrudes over the first strip of material 11 on the right. It is also possible to provide seam gluing strips, for example a seam gluing strip 18 on one side of the first material strip 11 and another seam gluing strip on the opposite side of the material strip 11. The gluing 17 can be carried out at the same time as the gluing 18 or, as already stated above , afterwards, before the forming of the tube or the tubular string, in a formatting device.

Nach Durchlaufen der Formatvorrichtung ergibt sich in dieser Konstellation ein doppellagiger rohrförmiger Strang bzw. nach dem Ablängen dieses Stranges ein doppellagiges Röhrchen, das im Querschnitt in Fig. 2 schematisch dargestellt ist. Hier liegt dann der erste Materialstreifenabschnitt 11 im Inneren, wobei die Kanten 13 und 14 auf Stoß bzw. mit wenig Abstand voneinander angeordnet sind.After passing through the format device, this constellation results in a double-layer tubular strand or, after cutting this strand to length, a double-layer tube with a cross-section of 2 is shown schematically. The first material strip section 11 is then located on the inside, with the edges 13 and 14 being arranged in abutment or at a small distance from one another.

Dieser Stoßbereich 21 ist radial nicht fluchtend mit dem Stoßbereich 20 des zweiten Umhüllungsmaterialstreifens 12. Dort liegen auch die Kanten 15 und 16 auf Stoß bzw. mit einem kleinen Abstand voneinander versehen. Die Lücken der Stoßbereiche 20 und 21 können auch mit einem Klebstoff versehen sein. Im Fall der Fig. 2 ist allerdings kein Klebstoff vorgesehen. Im Gegensatz zum Stand der Technik ergibt sich eine bessere Rundheit, da eine Überlappung der Kante 16 beispielsweise mit dem zweiten Umhüllungsmaterialstreifen 12 eben nicht vorgesehen ist, sondern ein Fluchten bzw. eine im Wesentlichen kreisförmige Außenkontur.This joint area 21 is not radially aligned with the joint area 20 of the second wrapping material strip 12. The edges 15 and 16 are also in abutment there or are provided with a small distance from one another. The gaps in the butt areas 20 and 21 can also be provided with an adhesive. In the case of 2 however, no adhesive is provided. In contrast to the prior art, the result is better roundness, since the edge 16 does not overlap, for example with the second strip of wrapping material 12, but is aligned or has a substantially circular outer contour.

Durch das Versetzen der Stoßbereiche 20 und 21 in Umfangsrichtung ist ein sehr sicherer Verschluss des hergestellten doppellagigen Röhrchens 10 ermöglicht. Außerdem wird hierdurch eine erhöhte Stabilität der doppellagigen Röhrchen 10 erzielt, da die Schwachstellen der einzelnen Lagen voneinander beabstandet sind.By offsetting the butt areas 20 and 21 in the circumferential direction, a very secure closure of the double-layered tube 10 produced is made possible. In addition, increased stability of the double-layer tubes 10 is thereby achieved, since the weak points of the individual layers are spaced apart.

Die Dicken des ersten Materialstreifenabschnitts 11 und des zweiten Materialstreifenabschnitts 12 zueinander können unterschiedlich oder im Wesentlichen gleich groß sein. Bei unterschiedlichen Dicken ist es bevorzugt, wenn der äußere Materialstreifenabschnitt, nämlich Materialstreifenabschnitt 12, dünner ist als der erste Materialstreifenabschnitt 11. Erfindungsgemäße und bevorzugte Dicken sind vorstehend beschrieben.The thicknesses of the first strip of material section 11 and of the second strip of material section 12 can be different or essentially the same in size. In the case of different thicknesses, it is preferred if the outer material strip section, namely material strip section 12, is thinner than the first material strip section 11. Inventive and preferred thicknesses are described above.

Fig. 3 zeigt schematisch eine erfindungsgemäße Vorrichtung zur Herstellung von doppellagigen Röhrchen 10 der Tabak verarbeitenden Industrie. In diesem Ausführungsbeispiel sind mehrere Varianten der erfindungsgemäßen Vorrichtung gleichzeitig dargestellt. 3 shows schematically a device according to the invention for the production of double-layer tubes 10 in the tobacco processing industry. In this exemplary embodiment, several variants of the device according to the invention are shown at the same time.

Von einer nicht dargestellten Bobine wird ein entsprechend breiter Basismaterialstreifen 24 in Förderrichtung 34 abgezogen und über Rollen 41 gelenkt. Es schließt sich eine Schneidvorrichtung 23 an eine Materialstreifenzuführvorrichtung 22 an. In der Schneidvorrichtung 23 wird der Basismaterialstreifen 24 in Längsrichtung geschnitten. Die Schneidvorrichtung 23 ist ein Längsschneider.A correspondingly wide strip of base material 24 is pulled off a bobbin (not shown) in the conveying direction 34 and guided over rollers 41 . A cutting device 23 follows a material strip feed device 22 . In the cutting device 23, the strip of base material 24 is cut in the longitudinal direction. The cutting device 23 is a longitudinal cutter.

Die geschnittenen Materialstreifen in Form eines ersten Materialstreifens 25 und eines zweiten Materialstreifens 26 werden noch parallel über eine weitere Umlenkrolle 41 gefördert, um dann mittels eines Querförderers 32 in Form einer Umlenkrolle voneinander getrennt zu werden. Der zweite Materialstreifen 26 wird nach einer weiteren Umlenkung mittels einer Beleimvorrichtung 27 im Wesentlichen vollständig beleimt, und zwar zumindest über die gesamte Länge. Diese Beleimvorrichtung 27 kann beispielsweise den Bereich einer Naht auslassen, muss dies allerdings nicht notwendigerweise.The cut strips of material in the form of a first strip of material 25 and a second strip of material 26 are conveyed in parallel via a further deflection roller 41 and are then separated from one another by means of a transverse conveyor 32 in the form of a deflection roller. After a further deflection, the second material strip 26 is essentially completely glued by means of a gluing device 27, specifically at least over the entire length. This gluing device 27 can, for example, omit the area of a seam, although this does not necessarily have to be the case.

Der erste Materialstreifen 25 wird getrennt von dem zweiten Materialstreifen 26 gefördert und mittels der Versatzvorrichtung 29 in Querrichtung zur Förderrichtung versetzt, so dass in dem Zugrollenpaar 28, mittels der eine Vereinigung des ersten Materialstreifens 25 mit dem zweiten Materialstreifen 26 geschieht, ein versetztes Aufeinanderliegen der Materialstreifen 25 und 26 erzielt wird. Die Materialstreifen liegen beispielsweise an dieser Stelle so vor, wie in Fig. 1 schematisch dargestellt.The first strip of material 25 is conveyed separately from the second strip of material 26 and offset in the transverse direction to the conveying direction by means of the offset device 29, so that in the pair of pull rollers 28, by means of which the first strip of material 25 and the second strip of material 26 are combined, the material strips lie offset on top of one another 25 and 26 is achieved. The material strips are present at this point, for example, as in 1 shown schematically.

Anschließend ist eine Heizvorrichtung 35 vorgesehen, mittels der der aufgebrachte Leim bzw. der aufgebrachte Klebstoff 17 vorgehärtet wird. Für den Fall, dass schon eine Nahtbeleimung stattgefunden hat, werden die übereinander gelegten Materialstreifen 25 und 26 einer Formatvorrichtung 30 zugeführt. Sofern die Nahtbeleimung noch nicht stattgefunden hat, findet diese mittels der Nahtbeleimungsvorrichtung 36 statt, die zwischen der Heizvorrichtung 35 und der Formatvorrichtung 30 angeordnet ist.A heating device 35 is then provided, by means of which the applied glue or the applied adhesive 17 is pre-hardened. If the seam has already been glued, the material strips 25 and 26 placed one on top of the other are fed to a formatting device 30 . If the seam gluing has not yet taken place, this takes place by means of the seam gluing device 36 which is arranged between the heating device 35 and the formatting device 30 .

In der Formatvorrichtung drückt der Einlauffinger 44 die Materialstreifen nach unten auf das Formatband 43, das über entsprechende Umlenkrollen 41 endlos durch die Formatvorrichtung 30 geführt wird.In the format device, the infeed finger 44 presses the strip of material down onto the format belt 43, which is guided endlessly through the format device 30 via corresponding deflection rollers 41.

In der Formatvorrichtung werden die Materialstreifen in eine runde Form oder eine ovale Form auf bekannte Weise umgeformt. Das Oberformat ist hierbei als beheiztes Oberformat 37 ausgebildet, um den Leim bzw. den Klebstoff 17 weiter abzubinden.In the formatting device, the strips of material are formed into a round shape or an oval shape in a known manner. The upper format is here designed as a heated upper format 37 to the glue or the Adhesive 17 further bind.

Anschließend können aus dem so gebildeten Strang 31 mittels der Ablängvorrichtung 38 entsprechend doppellagige Röhrchen in gewünschter Länge abgeschnitten werden.Subsequently, corresponding double-layer tubes can be cut to the desired length from the strand 31 formed in this way by means of the cutting device 38 .

Alternativ kann an dieser Stelle vorgesehen sein, dass noch keine Röhrchen abgelängt werden, sondern der rohrförmige Strang 31 in eine Strangmaschine 40 eingebracht wird.Alternatively, it can be provided at this point that no tubes are cut to length, but instead the tubular strand 31 is introduced into a strand machine 40 .

Hierzu kann auf der einen Seite vorgesehen sein, einfach nur den hergestellten rohrförmigen Strang in die Strangmaschine 40 einzubringen und dort mit einer in Fig. 3 nicht dargestellten Heizung den Klebstoff weiter aushärten zu lassen. Für diesen Fall ist eine sehr schnelle Fertigung von entsprechenden Röhrchen 10, die aus dem dann endgültig ausgehärteten Strang in der Strangmaschine 40 abgelängt werden, möglich.For this purpose, it can be provided on the one hand simply to introduce the tubular strand that has been produced into the strand machine 40 and to press it there with an in 3 heating, not shown, to let the adhesive harden further. In this case, it is possible to produce corresponding tubes 10 very quickly, which are then cut to length in the rod machine 40 from the rod that is then finally hardened.

Alternativ kann beispielsweise ein Filtertow 46 aus einer Filtertowaufbereitungsvorrichtung, die in Fig. 3 nicht dargestellt ist, die allerdings in Fig. 3 rechts von der dargestellten Vorrichtung angeordnet wäre, oberhalb des Formates 30 über die erfindungsgemäße Vorrichtung geführt werden und durch ein Zugrollenpaar 42 in Förderrichtung 47 der Strangmaschine 40 zugeführt werden. Das Filtertow 46 kann dann beispielsweise um den rohrförmigen Strang 31 herum angeordnet werden.Alternatively, for example, a filter tow 46 from a filter tow processing device, which is 3 is not shown, but in 3 would be arranged to the right of the device shown, are guided above the format 30 over the device according to the invention and are fed by a pair of pull rollers 42 in the conveying direction 47 of the rod maker 40. The filter tow 46 can then be arranged around the tubular strand 31, for example.

Damit das Filtertow an dem rohrförmigen Strang 31 hält, wird mittels einer Ankernahtvorrichtung 45 ein Klebstoff, beispielsweise auch PVA, auf den rohrförmigen Strang 31 aufgebracht. In der Strangmaschine 40 kann entsprechend ein Umhüllungsmaterialstreifen um den Strang aus einem innenliegenden rohrförmigen Strang und einem außen herum liegenden Filtertow in einer Formatvorrichtung gewickelt werden und so ein entsprechender Filter hergestellt werden.So that the filter tow is held on the tubular strand 31 , an adhesive, for example PVA, is applied to the tubular strand 31 by means of an anchor seam device 45 . In the rod machine 40, a strip of wrapping material can accordingly be wound around the rod consisting of an inner tubular rod and a filter tow lying on the outside in a format device, and a corresponding filter can thus be produced.

Ein hierzu passender Filter ist in Fig. 4 beispielsweise schematisch dargestellt. Der Filter ist hier mit der Bezugsziffer 50 versehen. Das Röhrchen 10 liegt innen, außen liegt ein Filtertow 48 und darum herum ist ein Umhüllungsmaterial 49 angeordnet.A suitable filter is in 4 example shown schematically. The filter is given the reference number 50 here. The tube 10 is on the inside, a filter tow 48 is on the outside and a wrapping material 49 is arranged around it.

Die Leimvorrichtung 27 und die Nahtbeleimungsvorrichtung 36 können als Flachdüsen, Spinnsprühdüsen oder gemäß EP 2 974 798 A1 ausgebildet sein. Es wird hier vorzugsweise ein flächiger Auftrag von Klebstoff bzw. Leim vorgenommen.The gluing device 27 and the seam gluing device 36 can be used as flat nozzles, spin spray nozzles or according to EP 2 974 798 A1 be trained. A flat application of adhesive or glue is preferably carried out here.

Die Heizvorrichtung 35 kann optional vorgesehen sein. Diese dient im Wesentlichen zum Voraushärten bzw. Vorhärten des Klebstoffs.The heater 35 can be provided optionally. This essentially serves to pre-cure or pre-cure the adhesive.

Zum genauen Ausrichten der Papierbahnen relativ zueinander, insbesondere um den richtigen Versatz in der Breite einzustellen, können entsprechende Sensoren vorgesehen sein, die die Lage der Kanten der Materialstreifen erkennen. Es können dann entsprechende Regelmechanismen vorgesehen sein, um die Lage der Materialstreifen zueinander zu regeln. Zum leichteren Rundformen, insbesondere von dicken Papieren oder Pappen, kann ein Vorbiegen des Materialstreifens unmittelbar vor der Formatvorrichtung oder unmittelbar nach dem Längsschneider erfolgen. Das doppellagige Röhrchen kann einen Innendurchmesser von beispielsweise 3 mm bis 8 mm aufweisen.For the precise alignment of the paper webs relative to one another, in particular in order to set the correct offset in width, corresponding sensors can be provided which detect the position of the edges of the material strips. Appropriate control mechanisms can then be provided in order to control the position of the material strips in relation to one another. For easier round shaping, especially of thick paper or cardboard, the strip of material can be pre-bent immediately before the formatting device or immediately after the longitudinal cutter. The double-layer tube can have an inner diameter of, for example, 3 mm to 8 mm.

BezugszeichenlisteReference List

1010
Röhrchentube
1111
erster Materialstreifenabschnittfirst strip of material
1212
zweiter Materialstreifenabschnittsecond strip of material
1313
Kanteedge
1414
Kanteedge
1515
Kanteedge
1616
Kanteedge
1717
Positionsklebstoffposition adhesive
1818
Nahtklebstoffseam glue
2020
Stoßbereichimpact area
2121
Stoßbereichimpact area
2222
Materialstreifenzuführvorrichtungmaterial strip feeding device
2323
Schneidvorrichtungcutting device
2424
Basismaterialsteifenbase material stiffeners
2525
erster Materialstreifenfirst strip of material
2626
zweiter Materialstreifensecond strip of material
2727
Beleimvorrichtunggluing device
2828
Zugrollenpaarpull roller pair
2929
Versatzvorrichtungoffset device
3030
Formatvorrichtungformat device
3131
Strangstrand
3232
Querförderercross conveyor
3434
Förderrichtungconveying direction
3535
Heizvorrichtungheating device
3636
NahtbeleimungsvorrichtungSeam gluing device
3737
beheiztes Oberformatheated upper format
3838
Ablängvorrichtungcutting device
4040
Strangmaschinestrand machine
4141
Umlenkrollepulley
4242
Zugrollenpaarpull roller pair
4343
Formatbandformat tape
4444
Einlauffingerenema fingers
4545
AnkernahtauftragvorrichtungAnchor suture applicator
4646
Filtertowstreifenfilter tow strips
4747
Förderrichtungconveying direction
4848
Filtertowfilter tower
4949
Umhüllungsmaterialwrapping material
5050
Filterfilter

Claims (11)

  1. A double-layered tube (10) of the tobacco processing industry, produced from a first and a second material strip portion (11, 12), wherein the first material strip portion (11) has a first width and the second material strip portion (12) has a second width, wherein the first and the second material strip portions (11, 12) are wound around one another such that the first material strip portion (11) in cross section is shaped to be circular or oval and the edges (13, 14) defining the first width abut one another, wherein the second material strip portion (12) in cross section is shaped to be circular or oval, and the edges (15, 16) defining the second width abut one another, wherein the second material strip portion (12) is arranged externally around the first material strip portion (11), wherein the abutting edges (13-16) of the first and second material strip portions (11, 12) are offset to one another in the circumferential direction, characterized in that the thickness of the first and second material strip portions (11, 12) ranges from 38 µm to 160 µm, wherein a positioning adhesive (17) is provided between the first and second material strip portions (11, 12) as glue over the entire surface or approximately over the entire surface with an application thickness of 10 µm to 80 µm.
  2. The tube (10) as claimed in claim 1, characterized in that the thickness of the first and second material strip portions (11, 12) ranges from 100 µm to 140 µm, in particular 120 µm to 130 µm, and/or the application thickness of the positioning adhesive (17) ranges from 10 µm to 40 µm, in particular 15 µm to 30 µm.
  3. The tube (10) as claimed in claim 1 or 2, characterized in that a seam adhesive (18) is provided between the first and second material strip portions (11, 12), in particular as glue over the entire surface or approximately over the entire surface, with an application thickness of 40 µm to 120 µm, in particular 60 µm to 100 µm.
  4. The tube (10) as claimed in one of claims 1 to 3, characterized in that the weight of the first and/or second material strip portion (11, 12) ranges from 27 g/m2 to 125 g/m2, in particular 60 g/m2 to 120 g/m2, in particular 70 g/m2 to 110 g/m2.
  5. The tube (10) as claimed in one of claims 1 to 4, characterized in that the offset of the abutting edges (13-16) of the first and second material strip portions (11, 12) is between 0.5 mm to 3 mm, in particular between 1.5 mm to 2.5 mm.
  6. The tube (10) as claimed in one of claims 1 to 5, characterized in that the ratio of the second width to the first width is between 52 to 48 and 50.5 to 49.5.
  7. A method for producing double-layered tubes (10) of the tobacco processing industry comprising the following method steps:
    - conveying a base material strip (24) in the longitudinal axial direction of conveyance (34),
    - longitudinal axial cutting of the base material strip (24) into a first material strip (25) having a first width and a second material strip (26) having a second width,
    - gluing at least the second material strip (26), wherein in particular the gluing takes place over the entire surface or approximately over the entire surface,
    - combining the first and the second material strips (25, 26) so as to be offset to one another and so that the first and the second material strips (25, 26) are superimposed, characterized in that in the region in which the first and the second material strips (25, 26) are adhesively bonded together by being combined so as to be offset to one another, a positioning adhesive (17) with an application thickness of between 10 µm and 80 µm, in particular between 10 µm and 40 µm, in particular between 15 µm and 30 µm, is applied during the gluing,
    - shaping the superimposed material strips (25, 26) into a tubular rod (31), and
    - cutting the rod (31) to length into double-layered tubes (10).
  8. The method as claimed in claim 7, characterized in that one or two regions is or are provided on the second material strip (26) with a seam adhesive (18) having an application thickness of 40 µm to 120 µm, in particular 60 µm to 100 µm.
  9. The method as claimed in claim 7 or 8, characterized in that the first material strip (25) is narrower than the second material strip (26), and in that the second material strip (26) is to be or is arranged externally around the first material strip (25), wherein in particular the ratio of a second width of the second material strip (26) to a first width of the first material strip (25) is between 52 to 48 and 50.5 to 49.5.
  10. The method as claimed in one of claims 7 to 9, characterized in that a type of adhesive is used for the positioning adhesive (17) and a different type of adhesive is used for the seam adhesive (18).
  11. The method as claimed in one of claims 8 to 10, characterized in that the seam adhesive (18) is applied before and/or after combining the material strips (25, 26).
EP17205335.7A 2016-12-12 2017-12-05 Double layer tube for the tobacco processing industry and method for producing such a tube Active EP3332655B1 (en)

Applications Claiming Priority (1)

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DE102016124051.6A DE102016124051A1 (en) 2016-12-12 2016-12-12 Doppellagiges tube of the tobacco processing industry and method for producing such a tube

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EP3332655B1 true EP3332655B1 (en) 2023-01-25

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JP (1) JP7115842B2 (en)
KR (1) KR102569141B1 (en)
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KR102569141B1 (en) 2023-08-21
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PL3332655T3 (en) 2023-05-29
KR20180067437A (en) 2018-06-20
RU2746381C2 (en) 2021-04-12
CN108208922A (en) 2018-06-29
JP7115842B2 (en) 2022-08-09
RU2017143128A (en) 2019-06-11
CN108208922B (en) 2022-05-27
RU2017143128A3 (en) 2021-02-18
US10721960B2 (en) 2020-07-28
EP3332655A1 (en) 2018-06-13

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