EP3727048B1 - Untereinheit eines rauchartikels und verfahren zur herstellung davon - Google Patents

Untereinheit eines rauchartikels und verfahren zur herstellung davon

Info

Publication number
EP3727048B1
EP3727048B1 EP18839867.1A EP18839867A EP3727048B1 EP 3727048 B1 EP3727048 B1 EP 3727048B1 EP 18839867 A EP18839867 A EP 18839867A EP 3727048 B1 EP3727048 B1 EP 3727048B1
Authority
EP
European Patent Office
Prior art keywords
closing element
tubular wrapper
closing
sub
tubular
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.)
Active
Application number
EP18839867.1A
Other languages
English (en)
French (fr)
Other versions
EP3727048A1 (de
Inventor
Ivan Eusepi
Marco Esposti
Gabriele BENNI
Nicola Baldanza
Eros Stivani
Giuliano Gamberini
Massimo Sartoni
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
Priority claimed from IT201800002358A external-priority patent/IT201800002358A1/it
Application filed by GD SpA filed Critical GD SpA
Publication of EP3727048A1 publication Critical patent/EP3727048A1/de
Application granted granted Critical
Publication of EP3727048B1 publication Critical patent/EP3727048B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
    • 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
    • A24C5/54—Folding the ends of cigarette paper tubes after filling them with tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices

Definitions

  • This invention relates to a sub-unit of a smoking article and to the related method for making it.
  • this invention is intended for making a sub-unit of a smoking article of the Heat Not Burn (HNB) type or of an electronic cigarette or of a conventional cigarette.
  • HNB Heat Not Burn
  • That type of article may be inhaled by heating but not burning the active portion.
  • the active portion may in fact be a piece comprising an aerosol-generating element, or a heat-not-burn type tobacco containing product.
  • the tobacco may be for example of the type which is pretreated, reconstituted, homogenized, or cast leaf, which in particular takes the form of loose material such as pellets or in the form of a crimp cut ribbon.
  • Prior art production methods involve making a smoking article formed by a rod-shaped body (for example a filter or a heating element) and a tube made of wrapping material which is then filled with the aerosol-generating element.
  • a rod-shaped body for example a filter or a heating element
  • a tube made of wrapping material which is then filled with the aerosol-generating element.
  • document US1841952 discloses a cigarette with a closing piece applied at one end of the cigarette.
  • Document US1289975 discloses a cigarette paper wrapper with an integrated closing piece at one end.
  • Document US1257319 discloses a cigarette paper wrapper with an integrated closing piece at one end as well.
  • Document GB810759 discloses a cigarette with a removable imperforate cap slidably fitted on each end thereof.
  • Document US2004/129280A1 discloses a sub-assembly of a smoking article comprising a tubular wrapping defining a containment chamber containing filling material of the tobacco industry.
  • the sub-assembly comprises a closing element attached to the end of the tubular wrapping to close the containment chamber.
  • the closing element develops transversely to the axis of the sub-unit and is arranged internally to the tubular wrapping and is coupled to an internal surface of the tubular wrapping itself.
  • the closing element is a piece of filter made of a gathered sheet
  • invention is to propose a method for making a sub-unit of a smoking article which overcomes at least some of the above-mentioned disadvantages of the prior art.
  • the aim of this invention is to provide a method for making a sub-unit of a smoking article which allows the structural integrity of the smoking article to be guaranteed, in particular preventing the unwanted escape of the type of active portion used to make its filling.
  • the technical purpose which forms the basis of this invention is to propose a sub-unit of a smoking article and the related method for making it which overcome at least some of the above-mentioned disadvantages of the prior art.
  • the aim of this invention is to provide a sub-unit of a smoking article and the method for making it which are able to guarantee the correct and efficient containment of the filling material content.
  • This invention shows a sub-unit of a smoking article, for example but not limited to a smoking article of the HNB type, which comprises at least one tubular wrapper (or wrapping) which extends along a main axis of extension and internally defines a containment chamber containing a filling material of the tobacco industry.
  • the tubular wrapper has a cylindrical section.
  • a sub-unit of a smoking article which comprises a tubular wrapper extending along a main axis of extension.
  • That tubular wrapper internally defines a containment chamber containing a filling material of the tobacco industry and has an access opening on at least one of its ends for access to the containment chamber.
  • the sub-unit also comprises at least one closing element applied to the at least one end of the tubular wrapper to define its closing wall.
  • the closing element extends transversely to the main axis of extension in such a way as to at least partly close the access opening.
  • the closing element has a substantially circular profile.
  • the closing element has a substantially square profile.
  • each closing element is made of a material with high thermal conductivity.
  • each closing element is made of flame retardant material.
  • each closing element is at least partly made of metallic or metallized material, that is to say, comprising metallic particles intended to render each closing element unsuitable for combustion.
  • the at least one closing element is located inside the tubular wrapper and is coupled to an inside surface of the respective end portion of the tubular wrapper.
  • the at least one closing element is deformed in such a way as to define a convex surface directed towards the containment chamber.
  • That convex surface is suitable for causing the filling material to be moved away from a respective access opening of the tubular wrapper.
  • the closing element comprises at least one edge portion and the closing element is coupled to the tubular wrapper by interference of the edge portion with an inside wall of the end of the tubular wrapper.
  • the closing element comprises at least one edge portion and the closing element is coupled to the tubular wrapper by gluing the edge portion to an inside wall of the end of the tubular wrapper.
  • the closing element has a surface extension such as to entirely cover the access opening and is provided with at least one hole or perforation for increasing its air or gas permeability.
  • the closing element has a surface extension such as to partly cover the access opening in such a way as to define uncovered portions of the access opening intended to allow air or gas to pass through.
  • the closing element comprises a piece of sheet material having at least one edge portion which is suitably deformed to adapt to the shape of the respective end of the tubular wrapper.
  • the closing element comprises a porous body.
  • the sub-unit comprises a rod-shaped segment of the tobacco industry which has one end coupled and connected to a first end of the tubular wrapper defining a closing wall, transverse to the wrapping axis, at least partly closing the containment chamber.
  • the closing element is applied to a second end, opposite to the first end, of the tubular wrapper.
  • the rod-shaped segment is connected to the tubular wrapper by a connecting strip of wrapping material.
  • That connecting strip may coincide with the strip defining the tubular wrapper.
  • the tubular wrapper is made of rigid material and the rod-shaped segment has one end abutted against, and coupled to, a first end of the tubular wrapper defining a closing wall, transverse to the wrapping axis, at least partly closing the containment chamber.
  • the closing element is applied to a second end, opposite to the first end, of the tubular wrapper.
  • the rod-shaped segment is at least partly inserted in the containment chamber in such a way that the tubular wrapper fits round the outside of an end portion of the rod-shaped segment.
  • the tubular wrapper has a configuration which, at its first end, is closed by a closing base, transverse to the main axis of extension, to at least partly close the containment chamber, and wherein the tubular wrapper has at its second end, opposite to the first end, a closing wall defined by the folding of an end portion of the second end.
  • That closing base is made as one with the tubular wrapper.
  • the tubular wrapper has two access openings, opposite to each other, on opposite end portions of the tubular wrapper for access to the containment chamber, and the sub-unit comprises two closing elements, each coupled to a respective end portion of the tubular wrapper to at least partly close the respective access opening.
  • a sub-unit of a smoking article which comprises a tubular wrapper extending along a main axis of extension.
  • the tubular wrapper internally defines a containment chamber which contains a filling material of the tobacco industry.
  • the tubular wrapper also has an access opening on at least one of its end portions for access to the containment chamber.
  • the sub-unit also comprises at least one closing element applied to the at least one end portion of the tubular wrapper to define a closing wall for closing the access opening.
  • That closing element extends transversely to the main axis of extension in such a way as to at least partly close the access opening.
  • the end portion has at least one blocking portion, transverse to the main axis of extension, extending from a wall of the tubular wrapper towards the main axis of extension to define a blocking surface for blocking the closing element.
  • the at least one blocking portion is defined by a permanent deformation of the respective end in which the blocking portion is present.
  • the at least one blocking portion comprises an annular ridge of an inside surface of the respective end.
  • the end has a pair of blocking portions and the closing element is interposed between the blocking portions and blocked between them in a configuration of at least partial closure of the access opening.
  • At least one blocking portion of the pair of blocking portions is defined by an annular ridge.
  • both of the blocking portions of the pair of blocking portions are defined by an annular ridge.
  • one blocking portion of the pair of blocking portions preferably the inner one, is defined by an annular ridge and the other blocking portion is defined by an edge bead on an end portion of the end.
  • the end portion has a pair of blocking portions, both transverse to the main axis of extension, which extend from a wall of the tubular wrapper towards the axis of extension of the tubular wrapper, and the closing element is interposed between the pair of blocking surfaces, to define a closing wall for closing the access opening.
  • the closing element extends transversely to the main axis of extension in such a way as to at least partly close the access opening.
  • the pair of blocking portions has a first blocking portion, preferably defined by a narrowing of the tubular wrapper, interposed between the filling material and the closing element, and a second blocking portion, preferably defined by an edge bead on the end portion of the tubular wrapper, interposed between the closing element and an environment outside the tubular wrapper.
  • the closing element has a substantially circular profile.
  • the closing element has a substantially square profile.
  • each closing element is made of a material with high thermal conductivity.
  • each closing element is made of flame retardant material.
  • each closing element is at least partly made of metallic or metallized material, that is to say, comprising metallic particles intended to render each closing element unsuitable for combustion.
  • the at least one closing element is located inside the tubular wrapper and is coupled to an inside surface of the respective end portion of the tubular wrapper.
  • the at least one closing element is deformed in such a way as to define a convex surface directed towards the containment chamber.
  • That convex surface is suitable for causing the filling material to be moved away from a respective access opening of the tubular wrapper.
  • the closing element comprises at least one edge portion and the closing element is coupled to the tubular wrapper by interference of the edge portion with an inside wall of the end of the tubular wrapper.
  • the closing element comprises at least one edge portion and the closing element is coupled to the tubular wrapper by gluing the edge portion to an inside wall of the end of the tubular wrapper.
  • the closing element has a surface extension such as to entirely cover the access opening and is provided with at least one hole or perforation for increasing its air or gas permeability.
  • That hole may even be configured to facilitate a movement, management or application of the closing element relating to the tubular wrapper.
  • the closing element has a surface extension such as to partly cover the access opening in such a way as to define uncovered portions of the access opening intended to allow air or gas to pass through.
  • the closing element comprises a piece of sheet material having at least one edge portion which is suitably deformed to adapt to the shape of the respective end of the tubular wrapper.
  • the closing element comprises a porous body.
  • the sub-unit comprises a rod-shaped segment of the tobacco industry which has one end coupled and connected to a first end of the tubular wrapper defining a closing wall, transverse to the wrapping axis, at least partly closing the containment chamber.
  • the closing element is applied to a second end, opposite to the first end, of the tubular wrapper.
  • the second end to which the closing element is applied has at least one respective blocking portion, transverse to the main axis of extension, extending from a wall of the tubular wrapper towards the main axis of extension to define a blocking surface for blocking the respective closing element.
  • the rod-shaped segment is connected to the tubular wrapper by a connecting strip of wrapping material.
  • That connecting strip may coincide with the strip defining the tubular wrapper.
  • the tubular wrapper is made of rigid material and the rod-shaped segment has one end abutted against, and coupled to, a first end of the tubular wrapper defining a closing wall, transverse to the wrapping axis, at least partly closing the containment chamber.
  • the closing element is applied to a second end, opposite to the first end, of the tubular wrapper.
  • the rod-shaped segment is at least partly inserted in the containment chamber in such a way that the tubular wrapper fits round the outside of an end portion of the rod-shaped segment.
  • the tubular wrapper has a configuration which, at its first end, is closed by a closing base, transverse to the main axis of extension, to at least partly close the containment chamber, and wherein the closing element is applied to a second end, opposite to the first end, of the tubular wrapper.
  • the second end to which the closing element is applied has at least one respective blocking portion, transverse to the main axis of extension, extending from a wall of the tubular wrapper towards the main axis of extension to define a blocking surface for blocking the respective closing element.
  • That closing base is made as one with the tubular wrapper.
  • the tubular wrapper has two access openings, opposite to each other, on opposite end portions of the tubular wrapper for access to the containment chamber, and the sub-unit comprises two closing elements, each coupled to a respective end portion of the tubular wrapper to at least partly close the respective access opening.
  • both of the ends to which the closing elements are applied have at least one respective blocking portion, transverse to the main axis of extension, extending from a wall of the tubular wrapper towards the main axis of extension to define a blocking surface for blocking the respective closing element.
  • the containment chamber may be closed using different types of closing walls.
  • Such combinations therefore allow, for example, one wall to be made by folding a respective end of the at least one tubular wrapper and the other wall to be made by applying a closing element combined with the presence or absence of blocking surfaces.
  • the aspects for making this invention which are indicated above and described make available sub-units of smoking articles which are able to guarantee optimum containment of the filling material in the sub-unit itself, thereby allowing elimination of the risk of having in the production chain non-conforming articles whose filling is insufficient and which are therefore not fit for marketing.
  • the numeral 100 generally denotes a sub-unit of a smoking article, by way of example and without limiting the scope of the invention that sub-unit may be used for making a smoking article of the Heat Not Burn (HNB) type or for making an electronic cigarette or a conventional cigarette.
  • HNB Heat Not Burn
  • the sub-unit 100 comprises a tubular wrapper 1, shown in different possible embodiments in the accompanying Figures 1A-C , which extends along a main axis of extension "X" and internally defines a containment chamber 2 which contains a filling material "M" of the tobacco industry.
  • filling material "M” may be an aerosol-generating material, tobacco pellets, tobacco which is loose or in another form, flavouring material (for example micro-capsules containing a flavouring liquid) or filtering material (activated charcoal, silica gel or others known in the reference sector) or even a material with cooling effect (such as PLA pellets).
  • flavouring material for example micro-capsules containing a flavouring liquid
  • filtering material activated charcoal, silica gel or others known in the reference sector
  • a material with cooling effect such as PLA pellets
  • tubular wrapper 1 comprises an access opening configured for allowing access to the containment chamber.
  • the tubular wrapper 1 may be made using different elements with tubular extension of the tobacco industry.
  • tubular wrapper 1 is defined by a rigid tubular body 1a or by a strip 1b which is wrapped round the main axis of extension "X" in such a way as to define the tubular wrapper 1 or by both.
  • strip means an element having a surrounding structure which can be made using a material having a net, mesh, perforated shape, or is made from a piece of sheet material suitable for containing the filling material "M" and having particular permeability properties.
  • the sub-unit 100 also comprises at least one closing element 10 applied to the at least one end 3a, 3b of the tubular wrapper to define a closing wall for closing the access opening.
  • the closing element 10 extends transversely to the main axis of extension "X" in such a way as to at least partly close the access opening.
  • the closing element 10 has a substantially circular profile, that is to say, that it has a profile substantially following that of the tubular wrapper 1, which also preferably has a substantially circular profile.
  • the closing element 10 has a substantially square profile.
  • each closing element 10 is made of a material having high thermal conductivity at least at a portion of it which closes the access opening.
  • each closing element 10 is made of flame retardant material.
  • each closing element 10 is at least partly made of metallic or metallized material, that is to say, comprising metal particles intended to render the at least one tubular wrapper 10 unsuitable for combustion.
  • the closing element 10 is located inside the tubular wrapper 1 and is coupled to an inside surface of the respective end portion of the tubular wrapper 1.
  • the access opening to the containment chamber 2 is closed by inserting the closing element 10 in the tubular wrapper 1 in such a way that the closing element at least partly obstructs the access opening.
  • the at least one closing element 10 is deformed in such a way as to define a convex surface directed towards the containment chamber 2.
  • That convex surface is suitable for causing the filling material "M" to be moved away from a respective access opening of the tubular wrapper 1.
  • the closing element 10 also comprises at least one edge portion 10a by means of which the closing element 10 itself is coupled to the tubular wrapper 1.
  • the closing element 10 is connected to an inside wall of the end 3a, 3b of the tubular wrapper 1 by interference with the edge portion 10a.
  • the closing element 10 is deformed in such a way that its edge portion 10a is pressed against the inside wall of the end 3a, 3b into which the closing element 10 is inserted and the friction between the two prevents it from slipping out.
  • the closing element 10 may be coupled to the tubular wrapper 1 by gluing the edge portion 10a to an inside wall of the end 3a, 3b of the tubular wrapper 1.
  • the at least one closing element 10 is applied on the outside of the tubular wrapper 1 and is coupled to an outside surface of the respective end 3a, 3b of the tubular wrapper 1.
  • the closing element 10 has at least one edge portion 10a for the stable coupling between the closing element 10 and the end 3a, 3b of the tubular wrapper 1.
  • the closing element 10 may be coupled to the tubular wrapper 1 by gluing the edge portion 10a to an outside wall of the respective end 3a, 3b.
  • the closing element 10 has a surface extension such as to entirely cover the access opening and is provided with at least one hole or perforation for increasing the permeability of the closing element 10 to air or gases.
  • the closing element 10 does not hermetically seal the access opening, since the passage of air/gas must always be guaranteed for correct operation of the article once implemented in a finished product.
  • the closing element 10 has a surface extension such as to partly cover the access opening in such a way as to define uncovered portions of the access opening intended to allow air or gas to pass through.
  • the closing element 10 is configured to prevent the filling material "M" from coming out of the containment chamber 2, but at the same time to guarantee the passage of a flow of air and/or gas through that chamber 2.
  • This particular characteristic is obtained either by making holes or perforations, or by applying a closing element 10 with a geometry such as to leave some portions of the access opening partly uncovered.
  • a closing element 10 which has a surface extension such as to only partly cover the access opening and is also provided with holes or perforations for improving its air and/or gas permeability.
  • the closing element 10 comprises a piece of sheet material which has at least one edge portion 10a which is suitably deformed to adapt to the shape of the end 3a, 3b of the tubular wrapper 1.
  • the closing element 10 is made in the form of a plate or layer, preferably elastic, capable of deforming so that it can be inserted in the tubular wrapper 1.
  • the closing element 10 comprises a porous body.
  • the closing element 10 may be made of a material which is spongy or porous, suitable for being fitted in the tubular wrapper 1.
  • the sub-unit 100 comprises a rod-shaped segment 5 of the tobacco industry having one end coupled and connected to a first end 3a of the tubular wrapper 1, defining a closing wall 4, transverse to the wrapping axis "X" and at least partly closing the containment chamber 2, whilst a closing element 10 is applied to a second end 3b, opposite to the first end 3a, of the tubular wrapper.
  • the sub-unit 100 may have at its second end 3b a closing wall 4 made according to the methods indicated above, whilst the closing wall 4 at the first end 3a is made by coupling the latter to a rod-shaped segment 5 which may for example be a segment made of filtering material, therefore suitable for making a filter of the smoking article, or a heating element configured for allowing the passage inside it of a flow of air and/or another gas and for heating it as it passes.
  • a closing wall 4 made according to the methods indicated above, whilst the closing wall 4 at the first end 3a is made by coupling the latter to a rod-shaped segment 5 which may for example be a segment made of filtering material, therefore suitable for making a filter of the smoking article, or a heating element configured for allowing the passage inside it of a flow of air and/or another gas and for heating it as it passes.
  • the rod-shaped segment 5 is connected to the tubular wrapper 1 by a connecting strip 6 made of wrapping material which may even optionally coincide with the tubular wrapper 1.
  • the rod-shaped segment 5 is at least partly inserted in the containment chamber 2 in such a way that the tubular wrapper 1 fits round the outside of an end portion of the rod-shaped segment 5.
  • Figure 4A shows a single tubular wrapper 1 defined by the strip 1b with one end coupled to the rod-shaped segment 5, in this case the strip 1b defining the tubular wrapper 1 also performs the function of connecting strip 6 since it allows the tubular wrapper 1 to be connected to the rod-shaped segment 5.
  • Figure 4B shows a first tubular wrapper 1 defined by the tubular body 1a and a second tubular wrapper 1 defined by the strip 1b wrapped round the tubular body 1a, the rod-shaped segment 5 being abutted against a first end 3a of the tubular body and connected to it by the action of the strip 1b which in this configuration again performs the function of connecting strip 6.
  • Figure 4C shows how the tubular body 1 is defined only by the strip 1b whilst there is a further connecting strip 6 between the strip 1b and the rod-shaped segment 5 for stably connecting them.
  • Figure 4D shows a sub-unit 100 having a first tubular wrapper 1 defined by the tubular body 1a and a second tubular wrapper 1 defined by the strip 1b wrapped round the tubular body 1a, there also being present a connecting strip 6 which connects the tubular body 1a to the rod-shaped segment 5 without being superposed on the strip 1b.
  • Figure 4E has the same configuration as Figure 4D with partial superposing of the strip 1b on the connecting strip 6.
  • Figure 4F shows only the tubular body 1a abutted against the rod-shaped segment 5 and connected to it by means of the connecting strip 6, in other words the strip 1b is not present in that embodiment.
  • the tubular wrapper 1 has a configuration which, at its first end 3a is closed by a closing base 7, transverse to the main axis of extension "X", to at least partly close the containment chamber 2, whilst a closing element 10 is applied to a second end 3b, opposite to the first end 3a, of the tubular wrapper 1.
  • the closing base 7 is made as one with the tubular wrapper 1 and is actually a projection of its first end 3a towards the axis of extension "X".
  • the tubular wrapper 1 has two access openings, opposite to each other, on opposite ends 3a, 3b of the tubular wrapper 1 for access to the containment chamber 2.
  • the sub-unit 100 comprises two closing elements each coupled to a respective end 3a, 3b of the tubular wrapper to at least partly close the respective access opening.
  • Figure 10A shows a sub-unit 100 comprising a pair of closing elements both positioned inside the containment chamber and where the relative edge portions engage respective inside walls of the ends 3a, 3b to which the closing elements are applied.
  • Figure 10B shows a sub-unit 100 comprising a pair of closing elements both configured to engage the outside wall of the respective ends 3a, 3b to which the closing elements 10 are applied.
  • Figure 10C highlights a possible embodiment which uses both solutions, since a first closing element 10 is joined to an outside wall of a respective first end 3a, whilst a second closing element 10 is joined to an inside wall of a respective second end 3b.
  • That sub-unit comprises: the tubular wrapper 1 which extends along the main axis of extension X and which defines the containment chamber 2 inside which the filling material M of the tobacco industry is contained, the tubular wrapper 1 having two access openings (to the containment chamber 2) at the first end 3a and at the second end 3b; and two closing elements 10 which each partly close a relative access opening of the tubular wrapper 1, engaging in the inside surface of the tubular wrapper 1.
  • each closing element 10 is a plate or layer made of an elastically deformable material. That plate or layer may be made of a metallic material (for example, steel). Each closing element 10, in the form of the plate or layer, has a square shape (more generally, each closing element 10 may have a polygonal shape comprising vertices; for example, it could be in the shape of a triangle, pentagon or hexagon).
  • each closing element 10 is configured in such a way that the vertices of the square fit into the tubular wrapper 1 (at the inside surface of it).
  • each closing element 10 has a predetermined thickness, a predetermined perimeter (substantially circumscribed inside the first end 3a of the tubular wrapper 1) and is made of a material having a predetermined stiffness such that when the closing element 10 is inserted into the tubular wrapper 1, the vertices of the closing element 10 partly fit into the wall of the tubular wrapper 1 and the closing elements 10 are substantially flat and orthogonal to the main axis of extension of the tubular wrapper 1.
  • the closing elements 10 for example by making one of the closing elements 10 using a more elastic material (or with reduced thickness) and with a perimeter such that it is not circumscribed in the first end 3a of the tubular wrapper 1, when inserting the closing element 10 into the tubular wrapper 1 the vertices of the closing elements 10 in any case engage in the inside surface of the tubular wrapper 1 but said closing elements 10 are concave (and not substantially flat) towards the inside of the containment chamber 2.
  • the closing element 10 in the form of a plate or layer may comprise one or more holes (sized in such a way as to prevent the filling material M from coming out of the containment chamber 2). Moreover, one of those holes (for example, a central hole in the closing element 10) may be used for inserting the closing element 10 into the tubular wrapper 1.
  • the sub-unit will only be able to comprise a single closing element 10; the characteristics described above with reference to each of the closing elements 10 of the sub-unit described above are also verified.
  • this invention achieves the proposed aims by overcoming the disadvantages of the prior art by making available to the user a sub-unit 100 of a smoking article and the related method for making it which guarantee the production of high quality articles, guaranteeing correct containment of the filling material "M" inside them, preventing any accidental loss of filling material.
  • This invention also relates to a sub-unit 100 which comprises at least one tubular wrapper 1 which extends along a main axis of extension "X" and internally defines a containment chamber 2 containing a filling material "M" of the tobacco industry.
  • the sub-unit 100 comprises at least at one end 3a, 3b of it a closing wall 4, transverse to the main axis of extension "X", for at least partly closing the containment chamber 2.
  • the closing wall 4 is defined by folding an end portion of the respective end 3a, 3b of the at least one tubular wrapper 1.
  • shape guarantees that the filling material "M” is correctly kept inside the containment chamber 2, preventing it from accidentally coming out.
  • the tubular wrapper 1 may be made using different elements with tubular extension of the tobacco industry.
  • the tubular wrapper 1 is defined by a rigid tubular body 1a.
  • the tubular wrapper 1 is defined by a strip 1b which is wrapped round the main axis of extension "X" in such a way as to define the tubular wrapper 1.
  • the sub-unit 100 may include both of the solutions indicated above and comprise both a rigid tubular body 1a and a strip 1b which in synergy operate in conjunction with one another to define the containment chamber 2.
  • the tubular body 1a defines a first tubular wrapper 1 which delimits an inside wall of the containment chamber 2, whilst the strip 1b is wrapped round the tubular body 1a defining a second tubular wrapper 1 which delimits an outside wall of the containment chamber 2.
  • the strip 1b comprises a rubber-coated layer suitably positioned for guaranteeing that it is kept correctly in the wrapped configuration and, if necessary, for guaranteeing its stable coupling to the tubular body 1a.
  • the closing wall 4, as indicated above defined by an end portion of the end 3a, 3b of the at least one tubular wrapper 1, may therefore be obtained by folding a portion of the tubular body 1a, of the strip 1b or of both.
  • the end portion of the strip 1b and/or of the tubular body 1a intended to make the closing wall 4 is made of material which is thermally conductive or has greater thermal conductivity than the remaining part of the strip 1b and/or of the tubular body 1a.
  • At least one end portion of one end 3a, 3b of a tubular wrapper 1 defines a closing circle 4a having a plurality of fold points 4b and the closing wall 4 is defined by mechanically deforming the closing circle 4a along that plurality of fold points 4b.
  • each end 3a, 3b of each tubular wrapper 1 designed to define a closing wall 4 defines a closing circle 4a which, once suitably shaped by a mechanical deformation, will create the closing wall 4.
  • the plurality of fold points 4b comprises four fold points angularly spaced around the main axis of extension "X" and divided into two separate pairs, a first pair 4b' and a second pair 4b".
  • Each pair comprises two fold points 4b which are opposite each other relative to the main axis of extension "X", that is to say, a line joining the two points of each pair intersects the main axis of extension "X", and the mechanical deformation applied to the closing circle 4a causes the first pair 4b' of points to be superposed on the second pair 4b" of points.
  • the plurality of fold points 4b comprises four fold points equidistant along the closing circle 4a and the mechanical deformation causes the four fold points 4b to come into abutment with each other inside the containment chamber 2.
  • the mechanical deformation causes a torsional folding of the plurality of fold points 4b around the main axis of extension "X".
  • Those types of processing may be applied at both ends 3a, 3b of the at least one tubular wrapper 1, in fact, according to one aspect of this invention, at each end 3a, 3b of the at least one tubular wrapper 1 the sub-unit 100 has a closing wall 4, transverse to the wrapping axis "X", for at least partly closing the containment chamber 2.
  • Both closing walls 4 are defined by folding an end portion of a respective end 3a, 3b of the at least one tubular wrapper 1.
  • Each closing wall 4 relative to one of the two end portions 3a, 3b may be made using any combination of the features described above independently of each other.
  • each closing wall 4 may be defined by folding only the tubular body 1a, only the strip 1b or both, without this placing any constraints on how the other closing wall is made.
  • each closing wall 4 may be made by means of any of the three deformations indicated above in an example, non-limiting way without thereby meaning that it is necessary to make the other closing wall 4 using the same deformation.
  • the sub-unit 100 comprises a rod-shaped segment 5 of the tobacco industry which has one end coupled and connected to a first end 3a of the at least one tubular wrapper 1 defining a closing wall 4, transverse to the wrapping axis "X", and at least partly closing the containment chamber 2, whilst the at least one tubular wrapper 1 has at its second end 3b, opposite to the first end 3a, a closing wall 4 defined by folding of an end portion of the second end 3b.
  • the sub-unit 100 may have at its second end 3b a closing wall 4 made according to the methods indicated above, whilst the closing wall 4 at the first end 3a is made by coupling the latter to a rod-shaped segment 5 which may for example be a segment made of filtering material, therefore suitable for making a filter of the smoking article, or a heating element configured for allowing the passage inside it of a flow of air and/or another gas and for heating it as it passes.
  • a closing wall 4 made according to the methods indicated above, whilst the closing wall 4 at the first end 3a is made by coupling the latter to a rod-shaped segment 5 which may for example be a segment made of filtering material, therefore suitable for making a filter of the smoking article, or a heating element configured for allowing the passage inside it of a flow of air and/or another gas and for heating it as it passes.
  • the rod-shaped segment 5 is connected to the at least one tubular wrapper 1 by a connecting strip 6 of wrapping material which may even optionally coincide with the second tubular wrapper 1b.
  • the rod-shaped segment 5 is at least partly inserted in the containment chamber 2 in such a way that the at least one tubular wrapper 1 fits round the outside of an end portion of the rod-shaped segment 5.
  • the at least one tubular wrapper 1 has a configuration which, at its first end 3a is closed by a closing base 7, transverse to the main axis of extension "X", to at least partly close the containment chamber 2, and has at its second end 3b, opposite to the first end 3a, a closing wall 4 defined by the folding of the end portion of the second end 3b.
  • the closing base 7 is made as one with the tubular wrapper 1 and is actually a projection of its first end 3a towards the axis of extension "X".
  • each closing wall 4 is made with a portion of tubular wrapper 1 material having high thermal conductivity.
  • each closing wall 4 is made of flame retardant material.
  • each closing wall 4 is at least partly made of metallic or metallized material, that is to say, comprising metallic particles intended to render each closing wall 4 unsuitable for combustion.
  • each closing wall 4 is made of material which is naturally porous or rendered porous by making holes or perforations in it, for example by means of laser, electrostatic, plasma perforation, in order to improve its air or gas permeability, for allowing correct inflow of air into the filling material "M" or outflow of smoke produced from it.
  • the closing wall 4 has features such that it easily allows, that it to say, without opposing it, the passage of a flow of air or gas through the closing wall 4 itself, therefore allowing that flow to reach and pass through the filling material "M" contained in the containment chamber 2.
  • This invention also relates to a method for making a sub-unit 100 of a smoking article, in particular a sub-unit 100 according to what is described above.
  • the method disclosed comprises preparing at least one tubular wrapper 1 of the tobacco industry which extends along a main axis of extension "X" and internally has a containment chamber 2.
  • That step may be carried out and completed by preparing a tubular body 1a of the tobacco industry.
  • step may be carried out and completed by means of the steps of preparing a strip 1b and wrapping the strip 1b round the main axis of extension "X".
  • the method for making a sub-unit 100 comprises the steps of preparing a tubular body 1a of the tobacco industry and a strip 1b and wrapping the strip 1b round the tubular body 1a.
  • tubular body 1a defines a first tubular wrapper 1 delimiting an inside wall of the containment chamber 2 and the strip 1b defines a second tubular wrapper 1 delimiting an outside wall of the containment chamber 2.
  • a closing wall 4 is made, transverse to the main axis of extension "X", for at least partly closing the at least one end 3a, 3b.
  • the step of making a closing wall 4 is performed by folding an end portion of a respective end 3a, 3b of the at least one tubular wrapper 1.
  • the step of making a closing wall may alternatively be performed by folding a respective end portion of the tubular body 1a and/or of the strip 1b.
  • first and second tubular wrapper 1 could be present simultaneously, but only one of the two is folded to make the closing wall 4.
  • At least one end 3a, 3b of the at least one tubular wrapper 1 defines a closing circle 4a which has a plurality of fold points 4b and the step of making a closing wall 4 comprises a step of mechanically deforming the respective closing circle 4a.
  • the method according to this invention comprises making a closing wall 4 for closing the containment chamber 2 of the sub-unit 100 by applying a mechanical deformation of one end 3a, 3b of the at least one tubular wrapper 1 which defines the containment chamber 2.
  • the plurality of fold points 4b comprises four fold points 4b which are equidistant from each other, divided into two separate pairs, a first pair 4b' and a second pair 4b".
  • Each pair comprises two fold points 4b which are opposite each other relative to the main axis of extension "X", that is to say a line joining the two fold points 4b of each pair intersects the main axis of extension "X”, and the step of mechanically deforming comprises a first step of folding the first pair 4b' of fold points 4b towards the main axis of extension "X” and a second step of folding the second pair 4b" of fold points 4b towards the main axis of extension, superposing it on the first pair 4b'.
  • the step of mechanically deforming comprises a step of applying on the closing circle 4a a pressure which is directed towards the main axis of extension "X" on each fold point 4b in such a way as to cause the plurality of fold points 4b to be folded simultaneously towards the main axis of extension "X".
  • the method comprises preforming the closing circle 4a by acting on each fold point 4b in such a way as to make a respective plurality of preforming lines 4c disposed radially around the main axis of extension "X".
  • the plurality of fold points 4b comprises four fold points 4b equidistant from each other and the step of applying on the closing circle 4a a pressure coaxial to the main axis of extension "X" causes the four fold points 4b to be simultaneously folded towards the main axis of extension "X" to define a surface which is substantially cross-shaped.
  • the closing circle 4a is preformed by making a pair of preforming lines 4c for each fold point 4b and the procedure is completed by simultaneously folding the fold points 4b towards the main axis of extension "X".
  • the mechanical deformation occurs by means of the steps of gripping each fold point 4b and applying a torque to each pair of fold points 4b opposite to each other relative to the main axis of extension "X" and finally applying on each fold point 4b a pressure which is coaxial to the main axis of extension "X".
  • What is described above comprises closing at least one closing wall 4 of a respective end 3a, 3b of the tubular wrapper 1 since the tubular wrapper does not necessarily need to be closed at both of its ends 3a, 3b.
  • the step of making at least one closing wall comprises a step of making a first closing wall 4, transverse to the main axis of extension "X", and at least partly closing a first end 3a of the at least one tubular wrapper 1.
  • That step is preferably performed before the step of inserting a filling material "M" in the containment chamber 2 in such a way as to allow a container to be made which has a single access opening through which to insert the filling material "M".
  • both of the closing walls 4 are made by folding an end portion of a respective end 3a, 3b of the at least one tubular wrapper 1.
  • one between the steps of making a first closing wall 4 and making a second closing wall 4 comprises the steps of preparing a rod-shaped segment 5 of the tobacco industry and abutting a first end of that rod-shaped segment 5 against one end of the at least one tubular wrapper 1.
  • step of stably connecting comprises a step of wrapping the strip round the rod-shaped segment in such a way that a first portion of the connecting strip 6 is superposed on the first end of the rod-shaped segment 5 and a second portion is at least partly superposed on the at least one tubular wrapper 1 thus stably connecting them to each other.
  • the step of making a first closing wall 4 is performed by preparing a tubular wrapper 1 which is closed at the first end 3a by a closing base 7, transverse to the main axis of extension "X", and at least partly closing the containment chamber 2.
  • the sub-unit 100 of a smoking article comprises a tubular wrapper 1 which extends along a main axis of extension "X" in such a way as to internally define a containment chamber 2 containing a filling material "M" of the tobacco industry.
  • the tubular wrapper 1 has an access opening on at least one of its ends 3a, 3b, for access to the containment chamber 2.
  • the sub-unit 100 also comprises at least one closing element 10 applied to a respective end 3a, 3b of the tubular wrapper 1 to define a closing wall 4 for closing the access opening.
  • the closing element 10 extends transversely to the main axis of extension "X" in such a way as to at least partly close the access opening.
  • the end 3a, 3b to which the closing element 10 is applied has at least one blocking portion, located inside the end 3a, 3b and extending transversely to the main axis of extension "X", to define a blocking surface for blocking the closing element 10.
  • the at least one blocking portion 20 is defined by a permanent deformation of the respective end 3a, 3b in which the blocking portion 20 is applied.
  • the at least one blocking portion 20 comprises an annular ridge or narrowing on an inside surface of the respective end 3a, 3b.
  • the end 3a, 3b has a pair of blocking portions 20, and the closing element 10 is interposed between the blocking portions 20 and blocked between them in a configuration of at least partial closure of the access opening.
  • Those blocking portions 20 may be made according to different possible embodiments, shown by way of example in Figures 11A-D .
  • At least one blocking portion 20 of the pair of blocking portions 20, preferably the inner one, is defined by an annular ridge.
  • both of the blocking portions 20 of the pair of blocking portions 20 are defined by an annular ridge.
  • one blocking portion 20 of the pair of blocking portions 20, preferably the inner one, is defined by an annular ridge and the other blocking portion 20 is defined by an edge bead on an end portion of the end 3a, 3b.
  • narrowing refers to a mechanical working intended to circumferentially deform the tubular wrapper 1, giving it a cross-section with reduced diameter.
  • the outside wall of the tubular wrapper 1 is crushed along a circular path in such a way that this outside wall defines a recess.
  • edge bead refers to a mechanical working intended to fold over itself an end portion of a respective end 3a, 3b of the tubular wrapper 1, in such a way that it makes contact with an inside wall of the tubular wrapper 1 itself.
  • the pair of blocking portions 20 has a first blocking portion 20 preferably defined by a narrowing of the tubular wrapper 1, interposed between the filling material "M" and the closing element 10, and a second blocking portion 20 preferably defined by an edge bead on the end portion of the tubular wrapper 1, interposed between the closing element 10 and an environment outside the tubular wrapper 1.
  • the closing element 10 could apply excessive pressure on the filling material "M", also risking invalidating its quality by making it deteriorate.
  • the closing element 10 has a substantially circular profile, that is to say, it has a profile substantially following that of the tubular wrapper 1.
  • the closing element 10 has a substantially square profile.
  • each closing element 10 is made of a material having high thermal conductivity at least at a portion of it which closes the access opening.
  • each closing element 10 is made of flame retardant material.
  • each closing element 10 is at least partly made of metallic or metallized material, that is to say, comprising metal particles intended to render each closing element 10 unsuitable for combustion.
  • the closing element 10 is located inside the tubular wrapper 1 and is coupled to an inside surface of the respective end portion of the tubular wrapper 1.
  • the access opening to the containment chamber 2 is closed by inserting the closing element 10 in the tubular wrapper 1 in such a way that the closing element at least partly obstructs the access opening.
  • the at least one closing element 10 is deformed in such a way as to define a convex surface directed towards the containment chamber 2.
  • That convex surface is suitable for causing the filling material "M" to be moved away from a respective access opening of the tubular wrapper 1.
  • the closing element 10 also comprises at least one edge portion 10a by means of which the closing element 10 is coupled to the tubular wrapper 1.
  • the closing element 10 is connected to an inside wall of the end 3a, 3b of the tubular wrapper 1 by interference of the edge portion 10a with it.
  • the closing element 10 may be coupled to the tubular wrapper 1 by gluing the edge portion 10a to an inside wall of the end 3a, 3b of the tubular wrapper 1.
  • the closing element 10 has a surface extension such as to entirely cover the access opening and is provided with at least one hole or perforation for increasing the air or gas permeability of the closing element 10.
  • the closing element 10 does not hermetically seal the access opening, since the passage of air/gas must always be guaranteed for correct operation of the article once implemented in a finished product.
  • the closing element 10 has a surface extension such as to partly cover the access opening in such a way as to define uncovered portions of the access opening intended to allow air or gas to pass through.
  • the closing element 10 comprises a piece of sheet material having at least one edge portion which is suitably deformed to adapt to the shape of the end 3a, 3b of the tubular wrapper 1.
  • the closing element 10 is made in the form of an elastic plate or layer capable of deforming so that it can be inserted in the tubular wrapper 1.
  • the closing element 10 comprises a porous body.
  • the closing element 10 may be made of a material which is spongy or porous, suitable for being fitted in the tubular wrapper 1.
  • the sub-unit 100 comprises a rod-shaped segment 5 of the tobacco industry having one end coupled and connected to a first end 3a of the tubular wrapper 1, defining a closing wall 4, transverse to the wrapping axis "X" and at least partly closing the containment chamber 2, whilst a closing element 10 is applied to a second end 3b, opposite to the first end 3a, of the tubular wrapper.
  • the end 3b to which the closing element 10 is applied has at least one blocking portion, transverse to the main axis of extension "X", extending from a wall of the tubular wrapper 1 towards the main axis of extension "X" to define a blocking surface for blocking the closing element 10.
  • the sub-unit 100 may have at its second end 3b a closing wall 4 made according to the methods indicated above, whilst the closing wall 4 at the first end 3a is made by coupling the latter to a rod-shaped segment 5 which may for example be a segment made of filtering material, therefore suitable for making a filter of the smoking article, or a heating element configured for allowing the passage inside it of a flow of air and/or another gas and for heating it as it passes.
  • a closing wall 4 made according to the methods indicated above, whilst the closing wall 4 at the first end 3a is made by coupling the latter to a rod-shaped segment 5 which may for example be a segment made of filtering material, therefore suitable for making a filter of the smoking article, or a heating element configured for allowing the passage inside it of a flow of air and/or another gas and for heating it as it passes.
  • the rod-shaped segment 5 is connected to the tubular wrapper 1 by a connecting strip 6 made of wrapping material which may even optionally coincide with the tubular wrapper 1.
  • the rod-shaped segment 5 is at least partly inserted in the containment chamber 2 in such a way that the tubular wrapper 1 fits round the outside of an end portion of the rod-shaped segment 5.
  • the tubular wrapper 1 has a configuration which, at its first end 3a is closed by a closing base 7, transverse to the main axis of extension "X", to at least partly close the containment chamber 2 whilst a closing element 10 is applied to a second end 3b, opposite to the first end 3a, of the tubular wrapper 1.
  • the end 3b to which the closing element 10 is applied has at least one blocking portion 20, transverse to the main axis of extension "X", extending from a wall of the tubular wrapper 1 towards the main axis of extension "X" in such a way as to define a blocking surface for blocking the closing element 10.
  • the closing base 7 is made as one with the tubular wrapper 1 and is actually a projection of its first end 3a towards the axis of extension "X".
  • the tubular wrapper 1 has two access openings, opposite to each other, on opposite ends 3a, 3b of the tubular wrapper 1 for access to the containment chamber 2.
  • the sub-unit 100 comprises two closing elements 10 each coupled to a respective end 3a, 3b of the tubular wrapper to at least partly close the respective access opening.
  • both of the ends 3a, 3b to which the closing elements 10 are applied have at least one respective blocking portion 20, transverse to the main axis of extension "X", extending from a wall of the tubular wrapper 1 towards the main axis of extension "X" to define a blocking surface for blocking the respective closing element 10.
  • This invention also relates to a method for making a sub-unit 100 of a smoking article which comprises preparing a tubular wrapper 1 of the tobacco industry which extends along a main axis of extension "X" and internally has a containment chamber 2.
  • the tubular wrapper 1 also has an access opening on at least one of its ends 3a, 3b for access to the containment chamber.
  • the method therefore comprises a step of inserting a filling material "M" of the tobacco industry into the containment chamber 2.
  • a closing wall is then made, transverse to the main axis of extension "X", for at least partly closing the at least one access opening.
  • the step of making a closing wall in turn comprises a series of steps which comprise inserting a closing element 10 into a respective end 3a, 3b of the tubular wrapper 1.
  • closing element 10 is configured to define a closing wall 4 for closing the at least one access opening.
  • the closing element 10 extends transversely to the main axis of extension "X" in such a way as to at least partly close the above-mentioned access opening.
  • the step of making a closing wall is performed in two steps for making a pair of blocking portions, that is to say, the method described here comprises two deforming steps on a respective end 3a, 3b of the tubular wrapper in such a way as to make a blocking surface for blocking the closing element 10.
  • Those steps may both be performed after inserting the closing element 10 in the containment chamber 2, in such a way that first the closing element 10 is inserted and then the two blocking portions 20 are made such that they contain the closing element 10 between them, stably connecting it and preventing it from slipping out of the containment chamber 2.
  • a first blocking portion 20 before inserting the closing element 10 in such a way as to supply in a simple and efficient way a supporting surface for the closing element 10 during its positioning in the containment chamber 2 in such a way as to simplify that procedure.
  • a second blocking portion 20 can be made for blocking the closing element 10.
  • each of the above-mentioned steps of deforming the respective end 3a, 3b of the tubular wrapper may be performed by creating an edge bead on or by narrowing the respective end 3a, 3b of the tubular wrapper 1.
  • Those embodiments may advantageously be applied even in combination with each other on different ends 3a, 3b of the same tubular wrapper 1.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Claims (12)

  1. Untereinheit eines Rauchartikels, umfassend eine rohrförmige Hülle (1), die sich entlang einer Hauptausdehnungsachse (X) erstreckt und innenseitig eine Aufnahmekammer (2) definiert, die ein Füllmaterial (M) der Tabakindustrie enthält, wobei die rohrförmige Hülle (1) eine Zugangsöffnung auf mindestens einem ihrer Enden (3a, 3b) für den Zugang zur Aufnahmekammer (2) aufweist, wobei die Untereinheit ferner mindestens ein Verschließelement (10) umfasst, das an dem mindestens einen Ende (3a, 3b) der rohrförmigen Hülle (1) angebracht ist, um eine Verschließwand (4) zu definieren, um die Zugangsöffnung zu verschließen, wobei sich das Verschließelement (10) quer zur Hauptausdehnungsachse (X) erstreckt, sodass die Zugangsöffnung zumindest teilweise verschlossen ist, wobei das mindestens eine Verschließelement (10) innerhalb der rohrförmigen Hülle (1) befindlich ist und mit einer innenseitigen Oberfläche des jeweiligen Endabschnitts der rohrförmigen Hülle (1) gekuppelt ist,
    dadurch gekennzeichnet, dass das Verschließelement (10) ein Stück Folienmaterial umfasst, aufweisend mindestens einen Kantenabschnitt (10a), der in geeigneter Weise verformt ist, um sich der Form des Endes (3a, 3b) anzupassen.
  2. Untereinheit nach Anspruch 1, wobei das mindestens eine Verschließelement (10) so ausgeformt oder verformt ist, dass es eine konvexe Oberfläche definiert, die hinführend zur Aufnahmekammer (2) gerichtet ist.
  3. Untereinheit nach Anspruch 1 oder 2, wobei das Verschließelement (10) mindestens einen Kantenabschnitt (10a) aufweist und das Verschließelement (10) mit der rohrförmigen Hülle (1) durch Interferenz des Kantenabschnitts (10a) mit einer innenseitigen Wand des Endes (3a, 3b) gekuppelt ist.
  4. Untereinheit nach Anspruch 1 oder 2, wobei das Verschließelement (10) mindestens einen Kantenabschnitt (10a) aufweist und das Verschließelement (10) mit der rohrförmigen Hülle (1) durch Verkleben des Kantenabschnitts (10a) mit einer innenseitigen Wand des Endes (3a, 3b) gekuppelt ist.
  5. Untereinheit nach einem oder mehreren der vorhergehenden Ansprüche, wobei das Verschließelement (10) ein im Wesentlichen kreisförmiges oder ein im Wesentlichen rechteckiges Profil aufweist.
  6. Untereinheit nach einem oder mehreren der vorhergehenden Ansprüche, wobei ein jedes Verschließelement (10) zumindest teilweise aus einem metallischen oder metallisierten Werkstoff besteht.
  7. Untereinheit nach einem oder mehreren der vorhergehenden Ansprüche, wobei das Verschließelement (10) eine Oberflächenausdehnung aufweist, sodass die Zugangsöffnung vollständig bedeckt ist, und mit mindestens einem Loch oder einer Perforation versehen ist, um die Durchlässigkeit des Verschließelements (10) für Luft oder Gase zu erhöhen.
  8. Untereinheit nach einem oder mehreren der Ansprüche 1-6, wobei das Verschließelement (10) eine Oberflächenausdehnung aufweist, sodass die Zugangsöffnung teilweise bedeckt ist, sodass unbedeckte Abschnitte der Zugangsöffnung definiert werden, die dazu bestimmt sind, das Durchströmen von Luft oder Gas zu erlauben.
  9. Untereinheit nach einem oder mehreren der vorhergehenden Ansprüche, wobei das Verschließelement (10) einen porösen Körper umfasst.
  10. Untereinheit nach einem oder mehreren der vorhergehenden Ansprüche, umfassend ein stabförmiges Segment (5) der Tabakindustrie, aufweisend ein Ende, das mit einem ersten Ende (3a) der rohrförmigen Hülle (1) gekuppelt und verbunden ist, definierend eine Verschließwand (4) quer zur Umhüllungsachse, die die Aufnahmekammer (2) zumindest teilweise verschließt, wobei das Verschließelement (10) an einem zweiten Ende (3b) gegenständig zum ersten Ende (3a) der rohrförmigen Hülle (1) angebracht ist.
  11. Untereinheit nach einem oder mehreren der Ansprüche 1-9, wobei die rohrförmige Hülle (1) eine Auslegung aufweist, die an ihrem ersten Ende (3a) durch eine Verschließbasis (7) quer zur Hauptausdehnungsachse verschlossen ist, um die Aufnahmekammer (2) zumindest teilweise zu verschließen, und wobei das Verschließelement (10) an einem zweiten Ende gegenständig zum ersten Ende (3a) der rohrförmigen Hülle (1) angebracht ist.
  12. Untereinheit nach einem oder mehreren der Ansprüche 1-9, wobei die rohrförmige Hülle (1) zwei Zugangsöffnungen, die gegenständig zueinander sind, an gegenständigen Enden (3a, 3b) der rohrförmigen Hülle (1) für den Zugang zur Aufnahmekammer (2) aufweist, und wobei die Untereinheit zwei Verschließelemente (10) umfasst, die jeweils mit einem jeweiligen Ende (3a, 3b) der rohrförmigen Hülle (1) gekuppelt sind, um die jeweilige Zugangsöffnung zumindest teilweise zu verschließen.
EP18839867.1A 2017-12-22 2018-12-19 Untereinheit eines rauchartikels und verfahren zur herstellung davon Active EP3727048B1 (de)

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IT201700149237 2017-12-22
IT201800002358A IT201800002358A1 (it) 2018-02-02 2018-02-02 Sotto-unità di un articolo da fumo e metodo di realizzazione
PCT/IB2018/060313 WO2019123298A1 (en) 2017-12-22 2018-12-19 Sub-unit of a smoking article and method for making it

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US20210100279A1 (en) 2021-04-08
WO2019123298A1 (en) 2019-06-27

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