EP3636424A2 - Procédé et machine de production de tubes multicouches pour produits de l'industrie du tabac - Google Patents

Procédé et machine de production de tubes multicouches pour produits de l'industrie du tabac Download PDF

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Publication number
EP3636424A2
EP3636424A2 EP19201700.2A EP19201700A EP3636424A2 EP 3636424 A2 EP3636424 A2 EP 3636424A2 EP 19201700 A EP19201700 A EP 19201700A EP 3636424 A2 EP3636424 A2 EP 3636424A2
Authority
EP
European Patent Office
Prior art keywords
longitudinal strip
web
deflector
continuous web
folding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19201700.2A
Other languages
German (de)
English (en)
Other versions
EP3636424A3 (fr
Inventor
Giuliano Gamberini
Marco Esposti
Nicola Baldanza
Ivan Eusepi
Luca Federici
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD SpA
Original Assignee
GD SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GD SpA filed Critical GD SpA
Publication of EP3636424A2 publication Critical patent/EP3636424A2/fr
Publication of EP3636424A3 publication Critical patent/EP3636424A3/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C5/00—Making tubes or pipes without using mandrels
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/46—Making paper tubes for cigarettes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B65H45/221—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement incorporating folding triangles

Definitions

  • This invention relates to a method and a machine for making multilayer tubes of the tobacco industry.
  • tube-shaped elements of paper material for example for use as components of traditional cigarettes (to make the filters, for example) or "HNB" (heat-not-burn) cigarettes.
  • these tube-shaped elements are made with a multilayer structure.
  • these multilayer tube-shaped elements are made by superposing and gluing two paper webs in such a way as to obtain, on one or both of the longitudinal edges, suitable joining zones intended to be spliced to each other to form a tube-like configuration.
  • the two webs are offset during superposing and gluing, so that, when the tube is formed, the splices between the corresponding end edges of the two layers are angularly spaced from each other about the axis of the tube itself.
  • the basic technical purpose of this invention is to provide a method and a machine for making multilayer tubes of the tobacco industry to overcome the above mentioned disadvantages of the prior art.
  • this invention has for an aim to provide a method and a machine for making multilayer tubes of the tobacco industry, capable of guaranteeing a high level of dimensional precision of the end product.
  • the numeral 1 denotes in its entirety a machine for making tubes of the tobacco industry according to this invention (only partly illustrated in the accompanying drawings).
  • the machine 1 comprises feed means 2 for feeding a continuous web 100 and configured to feed a continuous web 100 along a feed direction X parallel to the direction of extension of the web 100 and, along the feed path of the web 100, a first folding station 3, followed by another folding station 4.
  • Each folding station 3, 4 is configured to fold a respective longitudinal strip of the web 100 onto a second longitudinal strip of the web 100 about a longitudinal fold line which is parallel to the feed direction X so as to obtain a multilayer web having at least two superposed layers.
  • the embodiment illustrated has two consecutive folding stations 3, 4 to fold respective longitudinal strips in such a way as to obtain a three-layer web. To obtain a two-layer web, however, only the first folding station 3 is necessary.
  • a forming station 5 Downstream of the two folding stations 3, 4 there is also a forming station 5 for forming a continuous tube from the multilayer web. More in detail, the forming station 5 is configured for continuously wrapping the multilayer web itself around a longitudinal axis to form a continuous tube with a longitudinal splice.
  • an uncoupling and/or tensioning station 6 operating to allow the continuous web 100 to move at different speeds upstream and downstream and/or to tension the web, for example with a "dandy roller" system.
  • a cutting station (not illustrated) operating on the continuous tube to make a succession of transverse cuts to obtain a succession of tubes 200 of the tobacco industry.
  • tube of the tobacco industry is used to denote a generic tubular element, made, for example, of paper, plastic or metal or combinations thereof, cylindrical in shape, internally hollow and open at both ends.
  • the tube may be used directly in the form thus made, in particular internally hollow, to define a segment of a cigarette (traditional, HNB or other type of cigarette) or it may be intended to contain filling material such as tobacco fibre, granules or other material suitable for heat-not-burn (HNB) technology.
  • the length of the tube is less than the length of a standard cigarette because the tube is advantageously used to make a cigarette segment.
  • Figures 7-10 illustrate details of the structure of the tube 200 in transverse cross sections.
  • Figure 7 shows the final configuration of the tube 200, where different layers can be seen (in the embodiment with the three-layer thickness)
  • figures 8 and 9 show the configurations after the first step of folding and after the second step of folding, respectively.
  • the two steps of folding are carried out, respectively, on a first longitudinal strip 110 of the web 100, folded over onto a second longitudinal strip 120 of the web 100, and on a third longitudinal strip 130 of the web 100, folded over onto the second longitudinal strip 120 of the web 100 (or on the first longitudinal strip 110 after it has been folded).
  • the longitudinal strips 110, 130 subjected to folding are side strips of the web 100, folded flat against the middle strip 120 by folding about folding lines which are parallel to the direction of extension of the web 100 (perpendicular to the sheet in Figures 7-10 ).
  • Figures 7-10 also show a specific embodiment where the longitudinal strips 110, 130 are folded on the same side: that is to say, the second longitudinal strip 130 is folded over onto the first longitudinal strip 110, which had, in its turn, been previously folded over onto the middle longitudinal strip 120 of the web 100.
  • the two longitudinal side strips 110, 130 might equally be folded on opposite sides, without departing from the inventive concept.
  • Figures 7A and 10 are embodiment details showing the splicing zone where opposite lateral edges of the multilayer web are joined and the related recessed zone 140 ( Figure 10 ) is made to accommodate a protruding splicing edge 160 ( Figure 7A ).
  • the recessed zone 140 is obtained by retracting the corresponding edge of the first longitudinal strip 110 in such a way that the folding operations create a longitudinal cavity 150 ( Figure 9 ) that can be compressed to form the recessed zone 140.
  • the protruding splicing edge 160 is obtained by suitably adjusting the folding of the third longitudinal strip 130, specifically by laterally offsetting its respective fold line in such a way as to obtain a portion which extends beyond the width of the portion of web 100 that has already been folded ( Figure 9 ).
  • both the recessed zone 140 and the protruding splicing edge 160 can be modified as a function of the operating parameters of the folding stations 3, 4, specifically the widths of the longitudinal strips 110, 120, 130 by suitably varying the position of the longitudinal fold lines.
  • the first folding station 3 has a first deflector edge 10 disposed and/or configured to deflect the first longitudinal strip 110 of the web 100, and a second deflector edge 11 disposed and/or configured to deflect the second longitudinal strip 120 of the web 100, and, more specifically, the remaining part of the web 100.
  • the deflector edges 10, 11 are shown more clearly in Figures 4-6 .
  • the deflector edges 10, 11 are angled to each other.
  • the second deflector edge 11 is straight and perpendicular to the feed direction X of the web 100, whilst the first deflector edge 10, which is also straight, is inclined to the second deflector edge 11 at an acute angle ( ⁇ ), preferably included between 40° and 85°, and still more preferably, between 60° and 80°.
  • the deflector edges 10, 11 are peripheral edges of the same deflector element 12 which is preferably plate-shaped. More specifically, the deflector element 12 is plate-shaped at least at the parts of it defining the peripheral edges used for folding. This gives the deflector element 12 a flat shape suitable for folding the web.
  • the deflector element 12 is associated with a respective gluing device 20 operating on the first strip 110 and/or on the second strip 120 of the web 100 just upstream of folding the first strip 110 and preferably downstream of the second deflector edge 11 to deliver an adhesive substance suitable for holding the first strip 110 on the second strip 120 after folding.
  • the web 100 is pre-gummed on specific zones of its surface and the gluing device 20 is replaced by hot-melt or high-pressure adhesive activating means.
  • the activating means may be disposed upstream of the folding zone (in the case of hot-melt glue) or downstream of the folding zone (in the case of high-pressure activated glue) to activate the adhesive present in the overlapping zone between the first and the second strip 110, 120 of the web 100.
  • the first folding station 3 also comprises an auxiliary guide member 30 located downstream of the first deflector edge 10 to receive and guide the first longitudinal strip 110 of the web 100 as it leaves the first deflector edge 10 and to guide the first strip 110 while it is being folded.
  • the auxiliary guide member 30 is configured to slidably receive the first longitudinal strip 110 of the web 100 as it leaves the first deflector edge 10 and to guide the first longitudinal strip 110 while it is being folded completely onto the second longitudinal strip 120.
  • the auxiliary guide member 30 is planar and still more preferably, plate-shaped.
  • auxiliary guide member 30 and the first deflector edge 10 are disposed in such a way as to come into contact with respective opposite surfaces of the continuous web 100.
  • the auxiliary guide member 30 has a guiding edge 31 which is preferably straight and inclined relative to the feed direction X of the web 100 in such a way as to progressively fold the first longitudinal strip 110 onto the second longitudinal strip 120 of the web 100.
  • the guiding edge 31 is preferably disposed at an angle ⁇ of between 5° and 50° to the feed direction X. In the embodiment illustrated, the angle ⁇ is approximately 10°.
  • the guide member 30 also has an end edge 32, disposed downstream of the guiding edge 31 and parallel to the feed direction X, at a position such as to substantially coincide with the free longitudinal edge of the first longitudinal strip 110 at the folded position.
  • the deflector element 12 defines a positioning plane of the web 100 entering the folding station 3, whilst the auxiliary guide member 30 defines a positioning plane of the continuous web 100 leaving the folding station 3 ( Figures 2 , 3 and 6 ).
  • a creasing or scoring station which makes one or more crease lines or lines of weakness intended to coincide with fold lines at a folding station 3, 4.
  • the creasing station may comprise, for example, a pair of opposed rollers, at least one of which is provided with a pair of discs or ridges which are axially spaced from each other to make corresponding parallel lines of weakness on the initial web.
  • FIG 11 shows a further component of the machine 1 according to the invention, specifically a stabilizing element 70 configured to stabilize the folds on the multilayer web after all the steps of folding have been carried out.
  • the stabilizing element 70 is disposed downstream of the second folding station 4 (or more generally speaking, downstream of the last folding station) and is shaped in such a way as to present one or more deviating edges 71, 72 transverse to the feed direction of the multilayer web.
  • the deviating edges 71, 72 have the function of applying a flattening action on the folded edges of the multilayer web (labelled M in Figure 11 ) while the web undergoes a local change in its positioning plane at each deviating edge 71, 72.
  • the multilayer web leaving the stabilizing element 70 thus has stable, well-defined folds which have lost any possible curvature that might negatively affect the shape stability of the multilayer web.
  • At least one position detector 40 is provided downstream and/or upstream of the folding station 3, 4 to detect a transverse position of the multilayer web 100.
  • the machine 1 also comprises a processing unit (not illustrated), connected to the position detector 40 and to the folding station 3, 4, and configured to vary one or more operating parameters of the folding station 3, 4, preferably the width and/or transverse position of the first and/or the third longitudinal strip 110, 130 relative to the second longitudinal strip 120 as a function of the transverse position detected. That way, it is possible to maintain a high precision tolerance and to compensate for any constructional imprecisions, and to vary the dimensions of the recessed zone 140 and of the protruding splicing edge 160 to modify the properties of the longitudinal splice of the continuous tube.
  • a device (not illustrated) is used to detect at least one diameter value of the continuous tube and/or of at least one tube 200 obtained by cutting the continuous tube.
  • the processing unit is also connected to the position detector to vary one or more operating parameters of at least one folding station 3, 4, preferably the width and/or transverse position of the first and/or the third longitudinal strip 110, 130 relative to the second longitudinal strip 120 as a function of the diameter value detected. This allows using feedback to operate on the folding stations 3, 4 to compensate for possible excessive deviations of the real diameter from a reference diameter.
  • the machine 1 may further comprise a centring device 50, located preferably upstream of the folding stations 3, 4 for setting a transverse position at least of the continuous web 100 entering the first folding station 3.
  • the processing unit is configured to operate also on the centring device 50 to vary, through the centring device 50, the transverse position of the entire continuous web 50 upstream of the folding stations 3, 4 as a function of the transverse position detected by the detecting device 40.
  • an adhesive presence and/or properties detector (not illustrated) - for example, a capacitive sensor - for detecting the presence and/or properties of the adhesive substance, interposed between the first and the second longitudinal strip 110, 120 and/or between the second and the third longitudinal strip 120, 130 of the continuous web 100.
  • At least one guiding device 60 is preferably provided downstream of each folding station 3, 4 to adjust the transverse position of the web leaving the station 3, 4.
  • one or more of the folding stations 3, 4 comprises cooling means to prevent the deflector element 12 and/or the auxiliary guide member 30 from overheating as a result of the web sliding on them.
  • the continuous web 100 is fed along the feed direction X, parallel to the direction of extension of the web 100, and then the first longitudinal strip 110 of the web 100 is folded onto the second longitudinal strip 120 about a respective fold line which is parallel to the feed direction X so as to obtain a multilayer web having two superposed layers.
  • the third longitudinal strip 130 of the web 100 is then folded onto the second longitudinal strip 120 (onto which the first longitudinal strip 110 had been folded) about a second fold line which is parallel to the feed direction X so as to obtain a multilayer web having three layers.
  • the continuous tube is formed by continuously wrapping the multilayer web around a longitudinal axis, in particular by juxtaposing and splicing opposite lateral edges of the multilayer web (for example by joining the recessed portion 140 to the protruding splicing edge 160).
  • the continuous tube is then cut transversely to obtain a succession of tubes 200 of the tobacco industry.
  • Each step of folding is accomplished by deflecting the first longitudinal strip 110 of the web 100 around the respective first deflector edge 10 and simultaneously deflecting the second longitudinal strip 120 or, as the case may be, the remaining longitudinal strip, of the web 100 around the second deflector edge 11.
  • the deflection of the first longitudinal strip 110 produces a twisting action, or "screwing" motion of its positioning plane such that the first strip 110 is overturned onto the second strip 120
  • the deflection of the remaining part or longitudinal strip of the web 100 only changes the inclination of its positioning plane, specifically about an axis (which is substantially defined by the second deflector edge 11) perpendicular to the feed direction X.
  • This change in the inclination of the positioning plane defines a "pitching action" at the front of the web, that is to say, a folding action up or down with reference to the feed direction X of the web 100.
  • This change in the inclination of the positioning plane, in conjunction with the folding of the first longitudinal strip 110, has the effect of optimizing the superposing geometry of the longitudinal strips, compensating for the greater length of the path that the first longitudinal strip 110 would have to travel in its folding movement if the remaining part of the web 100 were not deflected.
  • the invention improves the geometric fit between the layers of the multilayer web, increasing its production precision and regularity.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Laminated Bodies (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
EP19201700.2A 2018-10-11 2019-10-07 Procédé et machine de production des tubes multicouches pour produits de l'industrie du tabac Pending EP3636424A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000009354A IT201800009354A1 (it) 2018-10-11 2018-10-11 Procedimento e macchina per la realizzazione di tubolari multistrato dell’industria del tabacco

Publications (2)

Publication Number Publication Date
EP3636424A2 true EP3636424A2 (fr) 2020-04-15
EP3636424A3 EP3636424A3 (fr) 2020-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19201700.2A Pending EP3636424A3 (fr) 2018-10-11 2019-10-07 Procédé et machine de production des tubes multicouches pour produits de l'industrie du tabac

Country Status (2)

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EP (1) EP3636424A3 (fr)
IT (1) IT201800009354A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000026353A1 (it) 2020-11-05 2022-05-05 Gd Spa Macchina e metodo per la realizzazione di cannucce alimentari
IT202000026377A1 (it) 2020-11-05 2022-05-05 Gd Spa Macchina e metodo per la realizzazione di cannucce alimentari
IT202000026407A1 (it) 2020-11-05 2022-05-05 Gd Spa Dispositivo e metodo per la finitura di cannucce alimentari
IT202000026365A1 (it) 2020-11-05 2022-05-05 Gd Spa Macchina e metodo per la realizzazione di cannucce alimentari
IT202100013010A1 (it) 2021-05-20 2022-11-20 Gd Spa Macchina e metodo per la realizzazione di spezzoni tubolari, in particolare dell’industria del tabacco o dell’industria delle cannucce
IT202100016568A1 (it) 2021-06-24 2022-12-24 Gd Spa Macchina e metodo per la realizzazione di tubolari multistrato
DE102023126232A1 (de) 2022-09-28 2024-03-28 G.D S.P.A. Maschine und Verfahren zur Herstellung mehrlagiger rohrförmiger Gebilde

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US4502675A (en) * 1983-07-15 1985-03-05 Kimberly-Clark Corporation Longitudinal folding of webs, folding board system therefor
SE503491C2 (sv) * 1994-10-12 1996-06-24 Tetra Laval Holdings & Finance Metod och anordning för att styra en tunn materialbana vid formning av materialbanan
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DE102005046660B4 (de) * 2005-09-29 2016-02-11 Windmöller & Hölscher Kg Herstellvorrichtung und -verfahren von Säcken oder Sackhalbzeugen umfassend eine Messung von Leimaufträgen
JP2008265918A (ja) * 2007-04-18 2008-11-06 Tokyo Kikai Seisakusho Ltd 輪転機のターンバー装置
RU2712202C2 (ru) * 2015-08-28 2020-01-24 Филип Моррис Продактс С.А. Улучшенные трубчатые элементы для курительных изделий
ITUB20160048A1 (it) * 2016-01-26 2017-07-26 Gd Spa Metodo e macchina per la realizzazione di spezzoni di un baco cilindrico tubolare multistrato adatto alla realizzazione di articoli da fumo sostanzialmente cilindrici e relativi spezzoni.
DE102017106992A1 (de) * 2017-03-31 2018-10-04 Hauni Maschinenbau Gmbh Verfahren zum Herstellen von wenigstens doppellagigen rohrförmigen Strängen der Tabak verarbeitenden Industrie sowie Vorrichtung zur Herstellung von wenigstens doppellagigen Strängen der Tabak verarbeitenden Industrie

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000026353A1 (it) 2020-11-05 2022-05-05 Gd Spa Macchina e metodo per la realizzazione di cannucce alimentari
IT202000026377A1 (it) 2020-11-05 2022-05-05 Gd Spa Macchina e metodo per la realizzazione di cannucce alimentari
IT202000026407A1 (it) 2020-11-05 2022-05-05 Gd Spa Dispositivo e metodo per la finitura di cannucce alimentari
IT202000026365A1 (it) 2020-11-05 2022-05-05 Gd Spa Macchina e metodo per la realizzazione di cannucce alimentari
IT202100013010A1 (it) 2021-05-20 2022-11-20 Gd Spa Macchina e metodo per la realizzazione di spezzoni tubolari, in particolare dell’industria del tabacco o dell’industria delle cannucce
IT202100016568A1 (it) 2021-06-24 2022-12-24 Gd Spa Macchina e metodo per la realizzazione di tubolari multistrato
DE102023126232A1 (de) 2022-09-28 2024-03-28 G.D S.P.A. Maschine und Verfahren zur Herstellung mehrlagiger rohrförmiger Gebilde

Also Published As

Publication number Publication date
EP3636424A3 (fr) 2020-05-27
IT201800009354A1 (it) 2020-04-11

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