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EP3752015B1 - Article de production d'aérosols au moyen d'une source de chaleur rétractable - Google Patents

Article de production d'aérosols au moyen d'une source de chaleur rétractable Download PDF

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Publication number
EP3752015B1
EP3752015B1 EP19702562.0A EP19702562A EP3752015B1 EP 3752015 B1 EP3752015 B1 EP 3752015B1 EP 19702562 A EP19702562 A EP 19702562A EP 3752015 B1 EP3752015 B1 EP 3752015B1
Authority
EP
European Patent Office
Prior art keywords
tubular element
inner tubular
aerosol generating
wrapping sheet
generating article
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
EP19702562.0A
Other languages
German (de)
English (en)
Other versions
EP3752015A1 (fr
Inventor
David KUCHEN
Alessandra PRIMO
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.)
Philip Morris Products SA
Original Assignee
Philip Morris Products SA
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 Philip Morris Products SA filed Critical Philip Morris Products SA
Publication of EP3752015A1 publication Critical patent/EP3752015A1/fr
Application granted granted Critical
Publication of EP3752015B1 publication Critical patent/EP3752015B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F42/00—Simulated smoking devices other than electrically operated; Component parts thereof; Manufacture or testing thereof
    • A24F42/10—Devices with chemical heating means
    • 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
    • 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
    • A24C5/002—Feeding arrangements for individual paper wrappers
    • 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
    • A24C5/01—Making cigarettes for simulated smoking devices
    • 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
    • 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
    • A24D1/22—Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/17—Filters specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F42/00—Simulated smoking devices other than electrically operated; Component parts thereof; Manufacture or testing thereof
    • A24F42/60—Constructional details
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F42/00—Simulated smoking devices other than electrically operated; Component parts thereof; Manufacture or testing thereof
    • A24F42/80—Manufacture
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F7/00—Mouthpieces for pipes; Mouthpieces for cigar or cigarette holders
    • A24F7/04—Mouthpieces for pipes; Mouthpieces for cigar or cigarette holders with smoke filters

Definitions

  • This invention relates to an aerosol generating article with a retractable heat source for heating an aerosol-forming substrate.
  • Aerosol generating articles in which tobacco is heated rather than burned have been proposed in the art.
  • An aim of such 'heated' aerosol generating articles is to reduce certain smoke constituents of the type produced by the combustion and pyrolytic degradation of tobacco in conventional cigarettes.
  • an aerosol is generated by a combustible heat source transferring heat to an aerosol-forming substrate, for example containing tobacco.
  • the aerosol-forming substrate may be located downstream of the combustible heat source.
  • An outer wrapping sheet of the aerosol generating article may be used to enclose the aerosol-forming substrate and at least a portion of the combustible heat source.
  • volatile compounds are released from the aerosol-forming substrate by heat transfer from the combustible heat source and entrained in air drawn through the heated aerosol generating article from a tip end where the heat source is located to a mouthpiece end. As the released compounds cool, they condense to form an aerosol.
  • the combustible heat source is difficult to extinguish and may burn for longer than the time for the aerosol-forming substrate to deplete, it is desirable to provide an aerosol generating article that can cover the combustible heat source to dispose of the aerosol generating article.
  • Arranging the outer wrapping sheet to include an internal recess into which the combustible heat source can be drawn is one way of achieving this.
  • Incorporating a series of holes to create areas of weakness in the aerosol generating article to aid its collapse is also known in the art. However, this approach introduces additional air paths which may be detrimental to aerosol delivery.
  • WO 2017/115196 discloses an aerosol generating article having a collapsible structure to retract the heat source into an interior 'void space'.
  • the disclosed structure includes an inner tubular member, which comprises, in order from a distal, tip end towards a proximal, mouthpiece end: a heat source, an aerosol-generating substrate, a first diffuser element, a void space, a second diffuser element, and an aerosol cooling element.
  • the inner tubular member is retained within a tubular body which includes a mouthpiece filter element.
  • An outer wrapping sheet may be adhered at a junction of the inner tubular member with the tubular body to retain the inner tubular element within the tubular body.
  • the inner tubular member includes an area of weakness whereby the tip end can be collapsed within the tubular body into the void space.
  • an aerosol generating article having a proximal end and a distal end.
  • An inner tubular element is provided, comprising an inner wrapping sheet circumscribing a combustible heat source positioned towards the distal end of the aerosol generating article.
  • the inner wrapping sheet further circumscribes an aerosol-forming substrate positioned downstream of the combustible heat source.
  • the combustible heat source and aerosol-forming substrate are provided in a co-axial arrangement.
  • the aerosol generating article further comprises an outer tubular element which circumscribes at least a portion of the inner tubular element.
  • the inner wrapping sheet includes a pre-twisted portion which enables deformation of the inner tubular element so that the distal end of the inner tubular element is slideable relative to the outer tubular element.
  • the pre-twisted portion provides a convenient mechanism for the aerosol generating article to collapse and can be incorporated into existing manufacturing lines with little modification and without affecting line speed.
  • a further advantage of the pre-twisted portion is that the area of weakness that enables the collapsing deformation is created without introducing additional air paths.
  • the aerosol generating article may include a mouthpiece filter at the proximal end and a mouthpiece end of the inner tubular element may be mounted to the mouthpiece filter.
  • the combustible heat source may be a carbonaceous heat source.
  • the aerosol-forming substrate may comprise tobacco.
  • the aerosol generating article may include a void space between the aerosol-forming substrate and the mouthpiece end.
  • a first transfer element may be located between the aerosol-forming substrate and the void space in the extended position.
  • the aerosol generating article may also include a second transfer element separated from the first transfer element by the void space in the extended position. Where first and second transfer elements are provided, these may abut one another when the void space is collapsed to the axially contracted configuration.
  • the outer tubular element may extend from the proximal end of the aerosol generating article towards the distal end thereof, and circumscribe at least the mouthpiece end of the inner tubular element and the void space and terminate downstream of the heat source.
  • the pre-twisted portion may be at least in the region circumscribing the void space.
  • the inner tubular element is slideable from an extended position having a first article length, to a retracted position having a second article length that is less than the first article length and in which the void space is at least partially collapsed to an axially contracted configuration.
  • the second article length When in the retracted position, the second article length may be about 80% or less than the first article length.
  • the second article length When in the retracted position, the second article length may be about 70% or less than the first article length.
  • the outer tubular element may terminate at or downstream of the aerosol-forming substrate.
  • the outer tubular element may comprise an outer wrapping sheet.
  • the outer wrapping sheet may be joined to the inner tubular element only at the mouthpiece end thereof.
  • the outer wrapping sheet may be joined to the inner tubular element at the mouthpiece end thereof for a first circumferential wrap.
  • the outer wrapping sheet may be joined to itself for a second wrap.
  • the outer wrapping sheet may be joined to itself along substantially its whole length.
  • the outer wrapping sheet may be joined to the inner wrapping sheet adhesively.
  • the outer wrapping sheet may be joined to itself adhesively.
  • a portion of the inner tubular element downstream of the pre-twisted portion may be rotationally offset relative to a portion of the inner tubular element upstream of the pre-twisted portion.
  • the rotational offset may be 5 degrees or more.
  • the rotational offset may be 15 degrees or more.
  • the rotational offset may be 45 degrees or more.
  • the second article length When in the retracted position, the second article length may be about 90% or less than the first article length.
  • an outer wrapping sheet for use in the manufacture of an aerosol generating article.
  • the outer wrapping sheet comprises first and second opposed edges substantially parallel with a longitudinal axis of the aerosol generating article.
  • a width of the sheet is defined by the first and second opposed edges that is at least equal to twice the circumference of the inner tubular element.
  • the outer wrapping sheet has deposited thereon a glue pattern comprising a first region comprising a band of glue extending substantially perpendicularly from the first edge towards the second edge.
  • the band of glue extends from the first edge towards the second edge for at least a distance equal to the circumference of the inner tubular element.
  • the band of glue forms an adhesive join between the outer wrapping sheet and the inner tubular element only at the mouth piece end thereof when wrapped therearound starting from the first edge.
  • the glue pattern further comprises a second region comprising an area of glue extending along substantially the whole length of the outer wrapping sheet, from the point at which the band ends to the second edge.
  • the glue pattern in the second region forms an adhesive join between the first wrap and any subsequent wraps of the outer wrapping sheet along substantially the whole length thereof.
  • the particular gluing pattern on the outer wrapping sheet provides both a firm connection of the inner tubular element to the outer tubular element and an unglued inner region that allows the inner tubular element to collapse, as well as structural rigidity surrounding the unglued portion.
  • a method of manufacturing an aerosol generating article having a proximal end and a distal end.
  • the method comprises providing an inner tubular element comprising an inner wrapping sheet circumscribing a combustible heat source positioned towards the distal end of the aerosol generating article.
  • the inner wrapping sheet further circumscribes an aerosol-forming substrate downstream of the combustible heat source.
  • the combustible heat source and aerosol-forming substrate are provided in a co-axial arrangement.
  • the inner wrapping sheet includes a pre-twisted portion.
  • the method further comprises overwrapping at least a portion of the inner tubular element with an outer wrapping sheet. As a result, the distal end of the inner tubular element is slideable relative to the outer tubular element.
  • the inner wrapping sheet further circumscribes a void space between the aerosol-forming substrate and the mouthpiece end, also in co-axial arrangement therewith.
  • Overwrapping the inner tubular element may comprise, starting from a first edge of the outer wrapping sheet, adhesively joining the outer wrapping sheet to the inner tubular element only at a mouthpiece end thereof for a first circumferential wrap.
  • the overwrapping may further comprise a second wrap of the outer wrapping sheet along substantially the whole length of the outer wrapping sheet, thereby forming the outer tubular element.
  • the outer tubular element may extend from the proximal end of the aerosol generating article towards the distal end thereof. Where the inner tubular member comprises a void space, the outer tubular element may circumscribe at least the mouthpiece end of the inner tubular element and the void space.
  • the outer tubular element may terminate downstream of the heat source.
  • the distal end including the combustible heat source and the aerosol-forming substrate may be slideable relative to the outer tubular element from an extended position having a first article length, to a retracted position having a second article length.
  • the second article length is less than the first article length. Sliding the distal end from an extended position to a retracted position at least partially collapses the void space to an axial contracted configuration.
  • the method may comprise providing a mouthpiece filter at the proximal end of the aerosol generating article.
  • the mouthpiece end of the inner tubular element may be mounted to the mouthpiece filter.
  • the method may comprise applying the pre-twist to the inner tubular element during the overwrapping procedure.
  • the overwrapping may comprise applying the outer wrapping sheet using a rotating drum, which may comprise rolling the inner tubular element through a pinch between the rotating drum on which the outer wrapping sheet is temporarily attached and a stationary guide plate, the outer wrapping sheet wrapping around the inner tubular element and adhering thereto during passage through the pinch.
  • the distal end of the inner tubular element that is not overwrapped may rotate at a different rate to the more proximal end thereof circumscribed by the outer wrapping sheet, thereby inducing the twist in the inner wrapping sheet of the inner tubular element.
  • the pre-twist may be applied to the inner tubular element at a twisting station prior to the overwrapping procedure.
  • the method may comprise manufacturing a pair of aerosol generating articles back-to-back, including providing a singular mouthpiece filter element having first and second ends corresponding to initially conjoined first and second mouthpiece filters.
  • the method may comprise providing an inner tubular element comprising providing first and second inner tubular elements which are mounted to the respective first and second ends of the singular mouthpiece filter element.
  • the overwrapping of the first and second inner tubular elements may be simultaneous.
  • the overwrapping may use a single outer wrapping sheet.
  • the outer wrapping sheet may be symmetrical about the centre of the mouthpiece filter element.
  • the outer wrapping sheet may form initially conjoined first and second outer tubular elements.
  • the method may include cutting through the conjoined outer tubular elements and the mouthpiece filter element to separate the conjoined articles into first and second aerosol generating articles.
  • aerosol generating article refers to an article comprising an aerosol forming substrate that is capable of releasing volatile compounds that can form an aerosol, for example by heating, combustion or chemical reaction.
  • aerosol forming substrate is used to describe a substrate capable of releasing volatile compounds, which can form an aerosol.
  • the aerosols generated from the aerosol forming substrates of aerosol generating articles according to the invention may be visible or invisible and may include vapours (for example, fine particles of substances, which are in the gaseous state, that are ordinarily liquid or solid at room temperature) as well as gases and liquid droplets of condensed vapours.
  • sheet denotes a laminar element having a width and length greater than the thickness thereof.
  • upstream and downstream refer to relative positions of elements of the aerosol generating article described in relation to the direction of inhalation air flow as it is drawn through the body of the aerosol generating article from a distal, tip end to the mouthpiece end.
  • downstream is defined relative to air flow during use of the smoking article or aerosol generating article, with the mouthpiece end of the article being the downstream end through which air and aerosol is drawn. The end opposite the mouthpiece end is the upstream end.
  • FIG. 1 is a schematic diagram of an exemplary aerosol generating article 100 extending between a proximal end 102 and a distal end 104.
  • An inner tubular element 105 having a mouthpiece end 107 is provided in the aerosol generating article 100.
  • an opposed heat source end positioned at the distal end 104 of the aerosol generating article 100.
  • the inner tubular element 105 comprises an inner wrapping sheet 109.
  • the inner wrapping sheet 109 circumscribes a combustible heat source 115 positioned towards the distal end of the aerosol generating article 100.
  • the inner wrapping sheet 109 further circumscribes an aerosol-forming substrate 120 positioned downstream of the combustible heat source 115.
  • the inner wrapping sheet 109 further circumscribes a void space 125 located between the aerosol-forming substrate 120 and the mouthpiece end 107.
  • the combustible heat source 115, aerosol-forming substrate 120 and void space 125 are provided in a co-axial arrangement.
  • the aerosol generating article 100 further comprises an outer tubular element 130 extending from the proximal end 102 of the aerosol generating article 100 towards the distal end 104 thereof.
  • the outer tubular element 130 circumscribes at least the mouthpiece end 107 of the inner tubular element 105 and the void space 125.
  • the outer tubular element 130 terminates downstream of the heat source 115.
  • the inner wrapping sheet 109 includes a pre-twisted portion 109b in at least in the region circumscribing the void space 125 (see Figure 6 ).
  • the distal end 104 including the combustible heat source 115 and the aerosol-forming substrate 120 is slideable relative to the outer tubular element 130 from an extended position having a first article length (L1, see Figure 2A ), to a retracted position having a second article length less than the first article length (L2, see Figure 2B ). Sliding the distal end 104 from an extended position to a retracted position at least partially collapses the void space 125 to an axially contracted configuration.
  • the aerosol generating article 100 is also shown comprising first 121a and second 121b transfer elements located within the inner tubular element 105 (see Figure 2A ).
  • the first 121a and second 121b transfer elements may be spaced from one another when the aerosol generating article is in the extended position.
  • the first 121a and second 121b transfer elements are shown located at the ends of the void space 125, between the aerosol-forming substrate 120 and the mouthpiece filter 127 respectively.
  • the aerosol generating article 100 is also shown comprising a transfer element 117 located between the combustible heat source 115 and the aerosol-forming substrate 120.
  • the transfer element 117 is circumscribed within the inner wrapping sheet 109.
  • the pre-twisted portion 109b of the inner wrapping sheet 109 may circumscribe part of respective first 121a and second 121b transfer elements.
  • the distal end 104 including the combustible heat source 115 and the aerosol-forming substrate 120 is slideable relative to the outer tubular element 130.
  • the distal end is slideable from an extended position having a first article length (L1 in Figure 2A ), to a retracted position having a second article length (L2 in Figure 2B ) less than the first article length, as shown in Figure 2A and 2B .
  • the void space 125 is at least partially collapsed to an axially contracted configuration.
  • the axially contracted configuration may be caused by application of a pressure or force at the distal end of the aerosol generating article 100, such as when an aerosol generating article 100 is "stubbed out". It is not essential that the void space 125 be entirely collapsed. While the transfer elements 121a, 121b are separated in the extended position, in some cases it may be desirable to keep the transfer elements 121a, 121b separated when the aerosol generating article 100 is in the contracted position, such as shown in Figure 2B . In other cases, it may be desirable that the first 121a and second 121b transfer elements abut one another when the void space 125 is collapsed to the axially contracted configuration (not shown).
  • first 121a and second 121b transfer elements are not essential features; for example, the void space may be bounded distally by the aerosol-forming substrate 120, and proximally by the mouthpiece filter 127. Indeed, the void space 125 itself is not essential. It will be understood that any axially compressible structure within the inner tubular element would enable the distal end of the inner tubular element to be slideable relative to the outer tubular element for "stubbing out" the aerosol generating article 100.
  • the pre-twisted portion 109b is a preferred method of creating an area of weakness, to enable the distal end of the inner tubular element to be slideable relative to the outer tubular element, in particular over perforating or cutting slits into the inner wrapping sheet, as the pre-twisted portion does not introduce additional air paths within the aerosol generating article 100.
  • aerosol generating articles 100 are manufactured on a back-to-back basis, such as shown in Figures 3 and 4 . That is to say, two aerosol generating articles 100, 100' are created integrally and simultaneously before being separated by cutting through the conjoined articles centrally.
  • Figure 3 illustrates first 105 and second 105' inner tubular elements before being overwrapped by an outer wrapping sheet 135.
  • a single mouthpiece filter element 129 can be considered to have first and second ends which correspond to initially conjoined first 127 and second 127' mouthpiece filters which are mounted to the respective proximal ends 102, 102' of first 105 and second 105' inner tubular elements.
  • the first 127 and second 127' mouthpiece filters are located downstream of the respective associated void space 125, 125'.
  • This advantageously allows for simultaneous overwrapping of the first 105 and second 105' inner tubular elements using a single outer wrapping sheet comprising initially conjoined outer wrapping sheets 135, 135' that are symmetric about the centre line 200 of the mouthpiece filter element 129 to form initially conjoined first 130 and second 130' outer tubular elements.
  • the conjoined aerosol generating articles 100, 100' can be separated by cutting through the conjoined outer tubular elements 130, 130' and the mouthpiece filter element 129.
  • Inner tubular element 105 has a mouthpiece end 107 and a heat source end and comprises an inner wrapping sheet 109 circumscribing, in a co-axial arrangement, a combustible heat source 115 positioned towards the distal end 104 of the aerosol generating article 100; an aerosol-forming substrate 120 downstream of the combustible heat source 115 and a void space 125 between the aerosol-forming substrate 120 and the mouthpiece end 107.
  • the inner wrapping sheet 109 includes a pre-twisted portion 109b at least in the region circumscribing the void space 125.
  • the inner tubular element 105 is also shown comprising a cap 110 at the distal end 104, upstream of the combustible heat source 115.
  • the cap 110 is shown abutting the combustible heat source 115 and is circumscribed by a portion of the inner wrapping sheet 109.
  • the removable cap 110 may comprise a desiccant, such as glycerine, to absorb moisture. This prolongs the longevity of the components within the inner tubular element 105.
  • the removable cap 110 may be removed by twisting the removable cap 110 to break the portion of the inner wrapping sheet 109 adjacent to the cap. Removal of the removeable cap 110 exposes a front portion of the combustible heat source 115 enabling the ignition the combustible heat source 115.
  • the combustible heat source 115 may be a carbonaceous heat source.
  • the aerosol-forming substrate 120 may comprise tobacco.
  • the outer wrapping sheet 135 comprises first 155a and second 155b opposed edges, substantially parallel with a longitudinal axis 150 of the aerosol generating article 100.
  • the longitudinal axis 150 of the aerosol generating article 100 extends between the proximal 102 and distal 104 ends of the aerosol generating article 100.
  • the first 155a and second 155b opposed edges define therebetween a width of the outer wrapping sheet 135.
  • the width of the outer wrapping sheet 135 is at least equal to twice the circumference of an inner tubular element 105 that it is to circumscribe so that it can wrap around at least twice. Extending perpendicularly between the first 155a and second 155b edges are the proximal 102 and distal 103 ends of the outer wrapping sheet 135.
  • the outer wrapping sheet 135 is shown having an exemplary glue pattern.
  • the glue pattern shown in Figure 3 comprises a band of glue in the form of first 145a and second 145b strips of glue extending substantially perpendicularly from the first edge 155a towards the second edge 155b for at least a distance equal to the circumference of the inner tubular element 105.
  • the first strip of glue 145a forms an adhesive join between the outer wrapping sheet 135 and the inner tubular element 105, in the region of and circumscribing the second transfer element 121b. The adhesive join is thus formed only at the mouthpiece end 107 thereof when wrapped therearound starting from the first edge 155a.
  • the second strip of glue 145b is used to join the outer wrapping sheet 135 to a mouthpiece filter 127.
  • the first 145a and second 145b strips form a band of glue that allows the outer wrapping sheet 135 to be bonded to the inner tubular element 105 and mouthpiece filter 127 only at the mouthpiece end 107. While two discrete strips 145a, 145b are shown, it would be appreciated that other glue arrangements, such as a single strip and non-continuous droplets or lines are included by this description.
  • the glue pattern is shown further comprising a second region comprising an area of glue 140 extending along substantially the whole length of the outer wrapping sheet 135 (i.e. from the proximal end 102 to the distal end 103), from the point at which the band 145a, 145b ends to the second edge 155b.
  • the area of glue 140 forms an adhesive join between the first wrap and any subsequent wraps of the outer wrapping sheet 135 along substantially the whole length thereof. While adhesives are described, other methods in the art of joining the outer tubular element 130 to the inner tubular element 105 or to itself are included in this description. For example, perforations between the sheets or use of tightening bands may be similarly effective.
  • the aerosol generating article 100 may have a length and diameter similar to a conventional cigarette.
  • the second article length, L2 may be about 90% or less than the first article length.
  • the second article length may be about 80% or less than the first article length.
  • the second article length may be about 70% or less than the first article length.
  • the pre-twisted portion 109b of the inner tubular element 105 may comprise a rotational offset between a portion of the inner tubular element upstream of the pre-twisted portion 109b (subsequently referred to as the "upstream portion") and a portion of the inner tubular element downstream of the pre-twisted portion (subsequently referred to as the "downstream portion”).
  • the rotational offset between the upstream and downstream portions of the inner tubular element may be about 5 degrees or more.
  • the rotational offset between the upstream and downstream portions of the inner tubular element may be about 15 degrees or more.
  • the rotational offset between the upstream and downstream portions of the inner tubular element may be about 45 degrees or more.
  • the pre-twisted portion can be identified by a series of helical grooves and depressions formed in the inner wrapping sheet circumferentially disposed about the inner tubular member.
  • the series of helical grooves and depressions would comprise a corresponding series of substantially parallel diagonal lines in the inner wrapping sheet.
  • FIG. 5 is a side view of the manufacturing station used to apply the pre-twisted portion 109b.
  • the overwrapping station illustrated comprises a first rotating drum 220, on which a series of outer wrapping sheets 135 with the glue pattern applied is temporarily attached, for example by the application of a vacuum holding an unglued side of each sheet 135 to an outer surface of the first rotating drum 220.
  • Each outer wrapping sheet 135 is adhered, at the first edge 155a thereof, to an inner tubular element 105.
  • each inner tubular element 105 is brought, with outer wrapping sheet 135 attached, in turn towards a stationary guide plate 230.
  • the first rotating drum 220 and stationary guide plate 230 act as a pinch 210 and friction between the unwrapped aerosol generating article, stationary guide plate 230 and first rotating drum 220 cause the outer wrapping sheet 135 to wrap around the inner tubular element 105 thereby forming a wrapped aerosol generating article 100.
  • the glue pattern shown in Figure 3 enables the outer wrapping sheet 135 to adhere to the inner tubular element 105 and the mouthpiece filter 127 in a first circumferential wrap.
  • the band of glue comprising first 145a and second 145b strips of glue bond the outer wrapping sheet 135 to the mouthpiece filter 127 and the inner tubular element 105 at the mouthpiece end 107.
  • the upstream portion of the inner tubular element 105 is not overwrapped - because the distal end 103 of the outer wrapping sheet 135 terminates more proximally - it rotates at a different rate to the downstream portion of the inner tubular element 105, which induces the twist in the inner wrapping sheet 109 of the inner tubular element 105.
  • the outer wrapping sheet 135 wraps around the inner tubular element 105 for a second circumferential wrap.
  • the outer wrapping sheet 135 is wrapped around the unglued portion of the inner tubular element 105.
  • the second region 140 of glue results in the second circumferential wrap of the outer wrapping sheet 135 forming an outer tubular element 130 that is rigid, but remains readily collapsible.
  • the aerosol generating article 100 is formed and may be removed from the pinch 210 by a second rotating drum 240. While it is preferable to apply the pre-twist to the inner tubular element 105 simultaneously when overwrapping the inner tubular element 105, it would be apparent to the skilled person this is not essential.
  • the pre-twist may be applied at a twisting station prior to the overwrapping station.
  • the rolled article can be divided along the centre line 200 by cutting through the conjoined outer tubular elements 130, 130' and conjoined mouthpiece filter member 129 to result in first 100 and second 100' aerosol generating articles.
  • This cutting procedure can be performed as part of the overwrapping process, or at a separate cutting station.
  • mouthpiece filter 127 and mouthpiece filter member 129 have been included in this description, they are not essential to the present invention.
  • a removeable cap 110 has been described as a way of preserving the aerosol-forming substrate, a removeable cap 110 is not essential to the present invention.
  • a transfer element 117 has been described, it is not essential to the present invention.
  • the pre-twisted portion 109b has been described as preferably formed simultaneously during the overwrapping of the inner tubular element 105, this is not essential to the invention.
  • the pre-twisted portion 109b of the inner wrapping sheet 109 may be applied at a separate twisting station and subsequently overwrapped.

Landscapes

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

Claims (15)

  1. Article de génération d'aérosol (100) ayant une extrémité proximale (102) et une extrémité distale (104), comprenant :
    un élément tubulaire interne (105) comprenant une feuille d'enveloppe interne (109) entourant, dans un agencement coaxial :
    une source de chaleur combustible (115) positionnée vers l'extrémité distale (104) de l'article de génération d'aérosol (100) ; et
    un substrat formant aérosol (120) en aval de la source de chaleur combustible (115) ; et
    un élément tubulaire externe (130) entourant au moins une partie de l'élément tubulaire interne (105) ;
    dans lequel la feuille d'enveloppe interne (109) inclut une partie pré-torsadée (109b) ;
    moyennant quoi la partie pré-torsadée (109b) permet la déformation de l'élément tubulaire interne (105) de sorte que l'extrémité distale (104) de l'élément tubulaire interne (105) peut coulisser par rapport à l'élément tubulaire externe (130).
  2. Article de génération d'aérosol selon la revendication 1, comprenant en outre un filtre d'embout buccal (127) au niveau de l'extrémité proximale (102), dans lequel une extrémité d'embout buccal (107) de l'élément tubulaire interne (105) est montée sur le filtre d'embout buccal (127).
  3. Article de génération d'aérosol selon la revendication 2, comprenant en outre un espace vide (125) entre le substrat formant aérosol (120) et l'extrémité d'embout buccal (107).
  4. Article de génération d'aérosol selon la revendication 3, dans lequel l'élément tubulaire externe (130) s'étend depuis l'extrémité proximale (102) de l'article de génération d'aérosol (100) vers l'extrémité distale (104) de celui-ci, et entoure au moins l'extrémité d'embout buccal (107) de l'élément tubulaire interne (105) et l'espace vide (125) et se termine en aval de la source de chaleur (115), et dans lequel la partie pré-torsadée (109b) est au moins dans la région entourant l'espace vide (125).
  5. Article de génération d'aérosol selon la revendication 3 ou la revendication 4, dans lequel l'élément tubulaire interne (105) peut coulisser depuis une position étendue ayant une première longueur d'article (L1) jusqu'à une position rétractée ayant une seconde longueur d'article (L2) qui est inférieure à la première longueur d'article (L1) et dans laquelle l'espace vide (125) est au moins partiellement réduit à une configuration contractée axialement.
  6. Article de génération d'aérosol selon la revendication 5, dans lequel la seconde longueur d'article (L2) est d'environ 90 % ou moins de la première longueur d'article (L1), ou d'environ 80 % ou moins de la première longueur d'article (L1), ou d'environ 70 % ou moins de la première longueur d'article (L1).
  7. Article de génération d'aérosol selon l'une quelconque des revendications 2 à 6, dans lequel l'élément tubulaire externe (130) comprend une feuille d'enveloppe externe (135) reliée à l'élément tubulaire interne (105) uniquement au niveau de son extrémité d'embout buccal (107) pour une première enveloppe circonférentielle et reliée à elle-même pour une seconde enveloppe.
  8. Article de génération d'aérosol selon la revendication 7, dans lequel la feuille d'enveloppe externe (135) est reliée à elle-même sur sensiblement toute sa longueur pour la seconde enveloppe.
  9. Article de génération d'aérosol selon l'une quelconque des revendications précédentes, dans lequel une partie de l'élément tubulaire interne en aval de la partie pré-torsadée (109b) est décalée en rotation par rapport à une partie de l'élément tubulaire interne (105) en amont de la partie pré-torsadée (109b) d'environ 5 degrés ou plus, ou d'environ 15 degrés ou plus, ou d'environ 45 degrés ou plus.
  10. Procédé de fabrication d'un article de génération d'aérosol ayant une extrémité proximale et une extrémité distale, comprenant :
    la fourniture d'un élément tubulaire interne comprenant une feuille d'enveloppe interne entourant, dans un agencement coaxial :
    une source de chaleur combustible positionnée vers l'extrémité distale de l'article de génération d'aérosol ; et
    un substrat formant aérosol en aval de la source de chaleur combustible ;
    dans lequel la feuille d'enveloppe interne inclut une partie pré-torsadée ; et
    la formation d'une surenveloppe sur au moins une partie de l'élément tubulaire interne avec une feuille d'enveloppe externe, moyennant quoi la partie pré-torsadée permet la déformation de l'élément tubulaire interne de sorte que l'extrémité distale de l'élément tubulaire interne peut coulisser par rapport à l'élément tubulaire externe.
  11. Procédé selon la revendication 10, dans lequel la formation d'une surenveloppe sur l'élément tubulaire interne comprend, à partir d'un premier bord de la feuille d'enveloppe externe, la liaison de manière adhésive de la feuille d'enveloppe externe à l'élément tubulaire interne uniquement au niveau d'une extrémité d'embout buccal de celui-ci pour une première enveloppe circonférentielle et la liaison de manière adhésive de la première enveloppe et d'une seconde enveloppe de la feuille d'enveloppe externe sur sensiblement toute la longueur de la feuille d'enveloppe externe, formant ainsi un élément tubulaire externe s'étendant depuis l'extrémité proximale de l'article de génération d'aérosol vers l'extrémité distale de celui-ci, entourant au moins l'extrémité d'embout buccal de l'élément tubulaire interne.
  12. Procédé selon la revendication 10 ou la revendication 11, dans lequel la pré-torsion est appliquée à l'élément tubulaire interne pendant la procédure de formation d'une surenveloppe.
  13. Procédé selon l'une quelconque des revendications 12, dans lequel la procédure de formation d'une surenveloppe comprend l'application de la feuille d'enveloppe externe à l'aide d'un tambour rotatif.
  14. Procédé selon la revendication 13, dans lequel la formation d'une surenveloppe comprend le roulement de l'élément tubulaire interne à travers un pincement entre le tambour rotatif sur lequel la feuille est temporairement fixée et une plaque de guidage stationnaire, la feuille s'enveloppant autour de l'élément tubulaire interne et y adhérant pendant le passage à travers le pincement, dans lequel l'extrémité distale de l'élément interne qui n'est pas surenveloppée tourne à une vitesse différente de l'extrémité plus proximale de celui-ci entourée par la feuille d'enveloppe externe, provoquant ainsi la torsion dans la feuille d'enveloppe interne de l'élément tubulaire interne.
  15. Procédé selon l'une quelconque des revendications 10 à 14, comprenant la fabrication d'une paire d'articles de génération d'aérosol dos à dos, incluant la fourniture d'un élément filtrant d'embout buccal unique ayant des première et seconde extrémités correspondant à des premier et second filtres d'embout buccal initialement unis, dans lequel la fourniture d'un élément tubulaire interne comprend la fourniture de premier et second éléments tubulaires internes qui sont montés sur les première et seconde extrémités respectives de l'élément filtrant d'embout buccal unique, dans lequel la formation d'une surenveloppe sur les premier et second éléments tubulaires internes est simultanée, l'utilisation d'une feuille d'enveloppe externe unique symétrique par rapport au centre de l'élément filtrant d'embout buccal pour former des premier et second éléments tubulaires externes initialement unis, le procédé incluant la découpe à travers les éléments tubulaires externes unis et l'élément filtrant d'embout buccal pour séparer les articles unis en des premier et second articles de génération d'aérosol.
EP19702562.0A 2018-02-16 2019-01-29 Article de production d'aérosols au moyen d'une source de chaleur rétractable Active EP3752015B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18157252 2018-02-16
PCT/EP2019/052073 WO2019158353A1 (fr) 2018-02-16 2019-01-29 Article de production d'aérosol comprenant une source de chaleur rétractable

Publications (2)

Publication Number Publication Date
EP3752015A1 EP3752015A1 (fr) 2020-12-23
EP3752015B1 true EP3752015B1 (fr) 2022-03-09

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EP19702562.0A Active EP3752015B1 (fr) 2018-02-16 2019-01-29 Article de production d'aérosols au moyen d'une source de chaleur rétractable

Country Status (7)

Country Link
US (1) US20210052011A1 (fr)
EP (1) EP3752015B1 (fr)
JP (1) JP7381473B2 (fr)
KR (1) KR20200119799A (fr)
CN (1) CN111629619A (fr)
BR (1) BR112020013396A2 (fr)
WO (1) WO2019158353A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5921675Y2 (ja) * 1979-06-01 1984-06-27 悟 尾関 煙草
CN101584497B (zh) * 2008-05-19 2011-05-04 宁田 阻燃防火卷烟
CN201467987U (zh) * 2009-08-27 2010-05-19 李智钊 便携式熄烟器
EP2570041A1 (fr) * 2011-09-15 2013-03-20 British American Tobacco (Investments) Limited Article à fumer et sa fabrication
WO2017115188A1 (fr) * 2015-12-29 2017-07-06 Philip Morris Products S.A. Extincteur pour article de génération d'aérosol
EP3397092B1 (fr) * 2015-12-29 2023-02-08 Philip Morris Products S.A. Embout pour article de génération d'aérosol
WO2017115196A1 (fr) * 2015-12-30 2017-07-06 Philip Morris Products S.A. Source de chaleur rétractable pour article générateur d'aérosol

Also Published As

Publication number Publication date
CN111629619A (zh) 2020-09-04
WO2019158353A1 (fr) 2019-08-22
BR112020013396A2 (pt) 2020-12-01
KR20200119799A (ko) 2020-10-20
JP2021514179A (ja) 2021-06-10
RU2020127220A (ru) 2022-03-16
JP7381473B2 (ja) 2023-11-15
EP3752015A1 (fr) 2020-12-23
US20210052011A1 (en) 2021-02-25

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