WO2011039302A1 - Filtre contenant un matériau additif - Google Patents

Filtre contenant un matériau additif Download PDF

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Publication number
WO2011039302A1
WO2011039302A1 PCT/EP2010/064549 EP2010064549W WO2011039302A1 WO 2011039302 A1 WO2011039302 A1 WO 2011039302A1 EP 2010064549 W EP2010064549 W EP 2010064549W WO 2011039302 A1 WO2011039302 A1 WO 2011039302A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
additive material
smoking article
external air
aperture
Prior art date
Application number
PCT/EP2010/064549
Other languages
English (en)
Inventor
Michael Lee Simpson
Toshihiko Sakai
Original Assignee
British American Tobacco Japan, Ltd
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 British American Tobacco Japan, Ltd filed Critical British American Tobacco Japan, Ltd
Publication of WO2011039302A1 publication Critical patent/WO2011039302A1/fr

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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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/041—Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter
    • 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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives

Definitions

  • the invention relates to a filter comprising an additive material. Particularly, but not exclusively, the invention relates to a means and method for controlling the access of external air to an additive material in a filter of a smoking article.
  • Smoking articles such as cigarettes, may comprise a rod of smokeable material and a filter co-axially attached to the rod of smokeable material.
  • the filter may comprise an additive material for affecting the properties of smoke as it passes through the filter.
  • the filter may comprise a flavourant material for affecting the flavour and taste of the smoke.
  • a smoking article filter comprising an additive material and a control apparatus configured to control the access of external air to the additive material.
  • the control apparatus may be selectively moveable between an open configuration in which external air may access the additive material and a closed configuration in which external air is prevented from accessing the additive material.
  • the filter may comprise a ventilation path in which additive material is provided and the control apparatus may be configured to allow external air to enter the ventilation path in the open configuration and to prevent external air from entering the ventilation path in the closed configuration.
  • the filter may comprise a plurality of ventilation paths in which additive material is provided and the control apparatus may be configured to allow external air to enter one or more of the plurality of ventilation paths in the open configuration and to prevent external air from entering the plurality of ventilation paths in the closed configuration.
  • Each ventilation path may comprise an entry point in a circumferential face of the filter which can be selectively opened in the open configuration and closed in the closed configuration.
  • the filter may comprise a wrapper having an aperture through which external air may access the additive material, and the control apparatus may be configured to block the aperture in the closed configuration and unblock the aperture in the open configuration.
  • the control apparatus may comprise a ring positioned at the circumference of the filter, the ring being rotatable with respect to the aperture in the wrapper to allow a transition between the open and closed configurations.
  • the control apparatus may comprise an aperture which can be selectively moved into and out of alignment with the aperture in the wrapper to respectively unblock and block the aperture in the wrapper.
  • the aperture in the control apparatus may be aligned with the aperture in the wrapper when the control apparatus is in the open configuration, and not aligned with the aperture in the wrapper when the control apparatus is in the closed configuration.
  • the control apparatus may comprise a seal configured to prevent external air from accessing the additive material through the aperture in the wrapper, other than through the aperture in the control apparatus.
  • the smoking article filter may comprise a plug of filter material having at least one indented portion in which the additive material is located.
  • the additive material may comprise a flavourant material configured to flavour external air which accesses the additive material.
  • the smoking article filter may comprise a plug of filter material having a plurality of indented portions in which the additive material is located.
  • the additive material in each of the indented portions may be different to the additive material in each of the other indented portions.
  • the additive material may comprise a plurality of different flavourant materials configured to flavour external air which accesses the additive material, the additive material in each of the indented portions comprising a different flavourant material to the flavourant material in each of the other indented portions such that the control apparatus can be rotated to selectively control the access of air to each of the flavourant materials.
  • the additive material may comprise at least one selected from a flavour masking agent, a bitterness receptor site blocker, a receptor site enhancer, a sweetener, a breath freshening agent and a flavourant material comprising or deriving from at least one of basil, mint, citrus, bay leaves, cardamom, cumin, oregano, paprika, rosemary, saffron, thyme, tea, eucalyptus, lemon, beefsteak plant, curcuma, turmeric, cilantro, rose, tobacco, orange blossom, licorice, hydrangea, Japanese white bark magnolia leaf, chamomile, fenugreek, clove, menthol, Japanese mint, aniseed, cinnamon, herb, wintergreen, cherry, berry, peach, apple, Drambuie, bourbon, scotch, whiskey, spearmint, peppermint, spearmint, lavender, celery, cascarilla, nutmeg, sandalwood, bergamot, geranium,
  • Each indented portion may comprise a groove extending axially along the plug of filter material from a mouth end of the filter, the groove being open at a mouth end face of the filter to allow a gaseous flow to exit the groove.
  • the smoking article filter may comprise a liner positioned between the filter material and the additive material.
  • a smoking article comprising a rod of smokeable material and the smoking article filter.
  • a method of controlling the access of external air to an additive material in a smoking article filter comprising providing the smoking article filter with a control apparatus configured to control the access the access of external air to the additive material.
  • the method may comprise providing an aperture in a wrapper of the filter through which external air may access the additive material, the aperture being selectively blockable by the control apparatus in order to selectively allow and prevent the access of the external air to the additive material.
  • Figure 1 is an illustration of a substantially cylindrical rod of smokeable material.
  • a wrapper is provided at the rod's circumferential surface.
  • Figure 2 is an illustration of a substantially cylindrical filter for a smoking article.
  • a plug wrap is provided at a circumferential surface of a plug of filter material.
  • Figure 3 is an illustration of smoking article comprising a rod of smokeable material abutting a filter.
  • a tipping paper overlaps the join between the rod and the filter. Apertures are provided in the tipping paper overlying the plug wrap.
  • Figure 4 is a cross-sectional illustration of a filter for a smoking article, in which three grooves are provided in a plug of filter material.
  • the grooves are lined with a plug wrap and a liner, and are provided with an additive material therein. Apertures are provided in a tipping paper overlying the plug wrap to correspond with the locations of the grooves.
  • Figure 5 is an exploded illustration of filter components for a smoking article.
  • a plug of filter material has three grooves in its circumferential surface.
  • a liner and a block of additive material fit into each groove.
  • Figure 6 is a cross-sectional illustration of a filter for a smoking article, in which three grooves are provided in a plug of filter material.
  • the grooves are lined with a liner, and are provided with an additive material therein.
  • a plug wrap is provided around the circumferential surface of the plug. Apertures are provided in a tipping paper overlying the plug wrap to correspond with the locations of the grooves.
  • Figure 7 is an illustration of a smoking article comprising a rod of smokeable material and a filter.
  • a control apparatus is provided on the circumferential surface of the filter for controlling the access of external air to an additive material in the filter.
  • a smoking article 100 such as a cigarette may comprise a rod of smokeable material 200 and a filter 300.
  • the rod of smokeable material 200 may comprise a substantially cylindrical length of tobacco material 210, such as a mixture of cut tobacco and reconstituted tobacco, and a wrapper 220 forming the
  • the wrapper 220 may comprise a paper, as is known in the art.
  • the filter 300 may comprise a substantially cylindrical plug of filter material 310 and a plug wrap 320 wrapped around the circumferential surface of the plug of filter material 310.
  • the filter material 310 may comprise cellulose acetate tow.
  • the plug wrap 320 may comprise a plug wrap paper and may be porous to facilitate ventilation of the filter material 310.
  • the diameter of the filter 300 may be substantially equal to the diameter of the rod of smokeable material 200.
  • the plug wrap 320 may be held in place around the filter material 310 by gluing along a seam of overlapping plug wrap 320.
  • the rod of smokeable material 200 and the filter 300 may be co-axially joined together. More specifically, an end face of the filter 300 may abut an end face of the rod of smokeable material 200 such that smoke drawn from the rod 200 can directly enter the filter 300.
  • the rod 200 and the filter 300 may be held together by a section of overlapping tipping material 400, for example comprising a sheet of tipping paper which overlaps the join between the rod 200 and the filter 300.
  • the tipping material 400 may be adhered to a circumferential surface of both the rod 200 and the plug wrap 320 using a suitable adhesive, such as a PVA material.
  • the tipping material 400 may extend along substantially the entire length of filter 300, and approximately one tenth of the rod of smokeable material 200.
  • the tipping material 400 may be substantially non-porous, but may be perforated at a location overlapping the filter material 310 in order to facilitate ventilation of the filter 300.
  • the tipping material 400 may include a plurality of perforations extending in a circumferential ring around the tipping material 400 to provide a corresponding plurality of air channels between the exterior of the smoking article 100 and the filter 300 (not shown in Figure 3).
  • the plug of filter material 310 may comprise at least one indented portion or cavity, for example one, two, three, four, five or six indented portions or cavities. This is shown in Figures 4 to 7.
  • each indented portion or cavity may comprise a groove in the external surface of the filter material 310.
  • the groove may extend axially along the filter 300 from the filter's mouth end, as shown in Figure 5.
  • the line of the groove may be substantially perpendicular to the mouth end face of the filter 300. Further features of the indented portion or cavity will be described below in the context of such a groove. However, it should be noted that forming the indented portion or cavity in a groove shape is not essential, and that differently shaped indented portions/cavities could alternatively be used.
  • the length and depth of the groove may be selected in dependence of the desired internal groove volume (i.e. the volume defined by the internal faces of the groove and an imaginary face extending across the open end of the groove at the
  • the groove may extend axially along approximately three quarters of the length of the filter 300 from the mouth end towards the rod of smokeable material 200, and may have a depth of approximately half of the radius of the filter 300.
  • the groove may have a substantially triangular cross-sectional shape, such that the groove narrows to a point as it extends deeper into the filter 300. This is clearly shown in Figures 4 to 6. It will be appreciated, however, that the groove may alternatively have a rectangular, semi-circular or any other suitable cross-sectional shape.
  • the filter 300 may also comprise a liner 340.
  • the internal faces of the groove may be Uned with the hner 340, which may comprise a separate section of sheet lining material configured to fit into the groove. This is clearly shown in Figure 5.
  • the hner 340 may substantially cover the entirety of the internal faces of the groove.
  • the liner 340 may comprise first and second substantially rectangular side faces and a substantially triangular end face. A longitudinal edge of the first side face may be joined to a longitudinal edge of the second side face, for example by folding a section of the sheet lining material.
  • the join between the side faces of the liner 340 may be positioned at the base of the groove, with the first and second side faces of the liner 340 extending outwards from the join to respectively cover the axially extending internal faces of the groove.
  • the end face of the Hner 340 may be joined to the first and second side faces of the hner 340 along a transverse edge of each of the first and second side faces of the hner 340.
  • the end face of the Uner 340 may be positioned against the substantially triangular internal end face of the groove 340, which may extend across a transverse axis of the filter 300.
  • the opposite end of the Uner 340, at the mouth end of the filter 300, may be left open to allow gas and/or smoke to exit the open end of the groove 340 at the mouth end face of the filter 300. This is all shown in Figure 5.
  • the liner 340 may be non-porous to prevent gaseous transfer between the filter material 310 and the internal volume of the groove. As described above, the mouth end of the groove may be open, thereby allowing gaseous transfer between the inside of the groove and the exterior of the filter 300.
  • the filter 300 may also comprise an additive material 350 for affecting the parameters of a gas or smoke as it passes through the filter 300.
  • the additive material 350 may comprise, for example, a flavourant material 350 for flavouring external air drawn into the filter 300 through apertures 410 in the tipping material 400. More specifically, the additive material 350 may comprise granule flavourants or other flavourant materials such as plant-based flavourants, for instance comprising or deriving from basil, mint, bay leaves, cardamom, cumin, oregano, paprika, rosemary, saffron, thyme, tea, eucalyptus, lemon, beefsteak plant, curcuma, turmeric, cilantro, rose, tobacco and orange blossom.
  • plant-based flavourants for instance comprising or deriving from basil, mint, bay leaves, cardamom, cumin, oregano, paprika, rosemary, saffron, thyme, tea, eucalyptus, lemon, beefsteak plant, curcuma, turmeric, cilantro
  • the mint flavourant may be chosen from the following mint varieties: Mentha Arventis, Mentha c.v., Mentha niliaca, Mentha piperita, Mentha piperita citrata c.v., Mentha piperita c.v, Mentha spicata crispa, Mentha cardifolia, Memtha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata c.v. and Mentha suaveolens.
  • flavourant materials may include extracts (e.g., licorice, hydrangea, Japanese white bark magnolia leaf, chamomile, fenugreek, clove, menthol, Japanese mint, aniseed, cinnamon, herb, wintergreen, cherry, berry, peach, apple, Drambuie, bourbon, scotch, whiskey, spearmint, peppermint, lavender, cardamon, celery, cascarilla, nutmeg,, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, cassia, caraway, cognac, jasmine, ylang-ylang, sage, fennel, piment, ginger, anise, coriander, coffee, or a mint oil from any species of the genus Mentha), flavour masking agents, bitterness receptor site blockers, receptor site enhancers, sweeteners (e.g., sucralose, acesulfame potassium, aspartame
  • the additive material 350 may comprise filter tow (e.g. cellulose acetate tow), for instance as a base material containing one or more of the flavourant materials listed above or other additive dispersed therein.
  • the additive material 350 may be located in the groove, for example filling the internal volume of the groove described above. More specifically, the additive material 350 may be located on the opposite side of the liner 340 to the filter material 310 to prevent the filter material 310 and the additive material 350 from being in direct contact with one another.
  • the additive material 350 may comprise a block of additive material 350 with a shape and dimensions corresponding to the internal shape and dimensions of the groove.
  • the additive material 350 comprises a substantially triangular prism with dimensions corresponding to the internal dimensions of the groove in the filter 300. This allows the additive material 350 to be inserted into the internal volume of the groove. Once inserted into the groove, one face of the triangular prism of additive material 350 may be substantially aligned with the circumferential surface of the plug of filter material 310 either side of the groove, thereby providing the filter 300 with a substantially circular cross-sectional shape.
  • the additive material 350 may alternatively or additionally be coated to liner 340 or an inside surface of the tipping material 400 or plug wrap 300. The liner 340 may be impermeable to the filter material 310 and additive material 350 to prevent the two materials 310, 350 from mixing together.
  • the liner 340 may include a slit 341 in one of the first or second side faces described above.
  • the slit 341 may extend from the mouth end of the liner 340 in an axial direction. This is shown in Figure 5.
  • the slit 341 may allow a degree of direct contact between the additive material 350 and the filter material 310.
  • the slit 341 may additionally or alternatively allow gaseous transfer between the internal volume of the groove and the filter material 310. It will be appreciated therefore, that the slit 341 may allow gaseous transfer between the additive material 350 in the groove and the filter material 310.
  • the surface profile of the plug wrap 320 may follow the surface profile of the filter material 310, including the surface profile of each of the one or more grooves.
  • the plug wrap 320 may be positioned between the filter material 310 and the liner 340. This means that the plug wrap 320 may be in direct contact with all of the axially extending faces of the filter material 310, including all of the internal surfaces of the one or more grooves.
  • the tipping material 400 at the exterior of the smoking article 100 may therefore be in direct contact with the plug wrap 320 where grooves are not present, and the liner 340 and additive material 350 where grooves are present. This is clearly shown in Figure 4.
  • the plug wrap 320 may be wrapped around only the circumferential exterior of the filter material 310, thereby making contact with the filter material 310 only where grooves are not present. Where grooves are present, the plug wrap 320 may extend directly over the top of the groove, thereby making contact with the liner 340 and the outwardly facing surface of the block of additive material 350. In this example, the tipping material 400 may therefore simply overly the plug wrap 320.
  • gas can be drawn in a substantially axial direction through the grooves and additive material 350 away from the rod 200 and out of the filter 300 at the mouth end of the groove.
  • the slit 341 described above is provided in the liner 341, the gas can additionally exit the filter 300 through the mouth end face of the filter material 310 by entering the filter material 310 from the additive material 350 via the slit 341.
  • External air may be drawn into the groove through an aperture 410 in the tipping material 400.
  • the aperture 410 may comprise an air channel through the tipping material 400, and is located at a point on the circumferential surface of the tipping material 400 which is radially outward from the location of the groove. This is shown in Figure 3. More specifically, a radial line extending from the centre of the substantially cylindrical filter 300 may pass through both of the groove and the aperture 410. External air may therefore enter the groove through the aperture 410, either directly (see Figure 4) or via a porous plug wrap 320 lying between the tipping material 400 and the additive material 350 (see Figure 6).
  • external air may enter the groove through the aperture 410 in the tipping material 400 and via one or more holes or perforations in the plug wrap 320 lying between the tipping material 400 and the additive material 350.
  • the external air may be flavoured by the additive material 350 in the groove as it is drawn towards the mouth end of the filter 300 by suction imparted on the mouth end of the filter 300.
  • the air may then exit the filter 300 at the mouth end, either through the mouth end of the groove or through the end face of the filter material 310 via the slit 341 in the liner 340.
  • the aperture 410, groove and additive material 350 together constitute a ventilation path of the filter 300 through which external air can be drawn to affect the flavour of the gaseous flow exiting the mouth end of the filter 300.
  • the tipping material 400 may comprise an aperture 410 for each of the grooves in the filter 300.
  • Each of the apertures 410 may be located radially outwards from a different groove.
  • the plurality of apertures 410 may be provided in a circumferential band around the tipping material 400, such that each of the apertures is radially aligned with one of the grooves.
  • Figures 3 to 6 illustrate the filter 300 as comprising three grooves and three corresponding apertures 410 in the tipping material 400.
  • the grooves are substantially equally spaced around the circumference of the filter 300, but this is not essential.
  • the grooves may alternatively be spaced unequally. Furthermore, more or fewer grooves may be provided.
  • each of the plurality of grooves may be filled with an additive material 350 in the manner described above.
  • each of the grooves may comprise a different additive material 350.
  • Each of the different additive materials 350 may comprise a different flayourant 350, such that external air passing through a first of the apertures 410 into a first of the grooves is flavoured differently to external air passing through a second of the apertures 410 into a second of the grooves, which is flavoured differently to external air passing through a third of the apertures 410 into a third of the grooves.
  • the filter 300 may comprise three different flavourant materials 350 provided in three different grooves, which can be accessed via three different apertures 410.
  • the filter 300 may comprise a control apparatus 500 for controlling the flow of external air through the one or more apertures 410 in the tipping material 400, thereby also controlling the flow of external air into the one or more grooves and additive materials 350 inside the grooves.
  • the control apparatus 500 is able to affect the taste of the gaseous flow exiting the mouth end of the filter 300.
  • the control apparatus 500 is in an open configuration with respect to the path of external air through one of the flavourant materials 350, allowing external air to be drawn through the flavourant material 350 in a groove via an aperture 410 in the tipping material 400, a flavoured gaseous flow will exit through the mouth end of the filter 300.
  • An example of an open configuration of the control apparatus in respect of one of the flavourant materials 350 is shown in Figure 7.
  • the control apparatus 500 is in a closed
  • control apparatus 500 blocks the aperture 410 in the tipping material 400 corresponding to a path through a flarourant material 350, and thereby prevents external air from being drawn into a groove, the gaseous flow exiting the mouth end of the filter 300 will remain unflavoured by the flavourant material 350 in the groove.
  • control apparatus 500 may comprise a substantially cylindrical ring 500, which can be rotated with respect to the circumferential surface of the filter 300 between open and closed configurations with respect to air paths through the flavourant (or other additive) materials 350.
  • the ring 500 may overlap each of the circumferentially spaced apertures 410 in the tipping material 400, and may comprise one or more apertures 510 which provide an air channel through the ring 500 for allowing air to pass through the ring 500 into the additive material 350.
  • the ring 500 may comprise a ring seal 520 located on its inwardly facing
  • the ring seal 520 may provide a substantially air tight seal between its inwardly facing surface and the external circumferential face of the tipping material 400, thereby preventing external air from accessing the one or more apertures 410 in the tipping material 400 by any route other than via the one or more apertures 510 in the ring 500.
  • an aperture seal 530 may be provided around the one or more apertures 510 provided in the ring 500.
  • the seals 520, 530 may be formed using a continuous layer of rubber or other suitable material on the inwardly facing circumferential surface of the ring 500.
  • the seals 520, 530 may alternatively be formed as beads of rubber or other suitable material arranged at the edges of the inwardly facing circumferential surface of the ring 500.
  • the one or more apertures 510 in the ring 500 may initially be sealed using a plastic quality seal, to be removed for first use. This will prevent undesired access of external air to the additive material 350 pre-use of the smoking article 100.
  • the ring 500 can be rotated to move the one or more apertures 510 in the ring 500 into alignment with the one or more apertures 410 in the tipping material 400. This may constitute an open configuration of the ring 500, allowing external air to be drawn into the one or more grooves via the apertures 510, 410 in the ring 500 and the tipping material 400.
  • the ring 500 can also be rotated to move the one or more apertures 510 in the ring 500 out of alignment with the one or more apertures 410 in the tipping material 400. This may constitute a closed configuration of the ring 500, preventing external air from entering the grooves by blocking access to the apertures 410 in the tipping material 400.
  • the smoking article 100 may be supplied to the user with the ring 500 in a closed configuration in order to prevent undesired access of external air to the additive material 350 pre-use.
  • the ring 500 may cooperate with one or more guides 420 on the exterior surface of the filter 300 to restrict or prevent longitudinal movement of the ring 500 up and down the filter 300.
  • the ring 500 may cooperate with one or more circumferential restraining ribs 420 formed on the exterior surface of the tipping material 400 to keep the ring 500 substantially aligned with the axial location of the one or more apertures 410 in the tipping material 400.
  • the restraining ribs 420 may be configured to restrict the longitudinal movement of the ring 500 to a predetermined distance, so as to allow the ring 500 to be moved a limited distance up/down the filter 300 with respect to the location of the one or more apertures 410 in the tipping material 400. This will allow a user to vary the degree of longitudinal alignment between the apertures 410, 510 even when the ring 500 is in an open configuration. Alternatively, the cooperation between the ring 500 and the restraining ribs 420 may substantially prevent the ring 500 from sliding
  • the ring 500 comprises a single aperture 510 and the tipping material 400 comprises three apertures 410 circumferentially spaced around the filter 300.
  • the three apertures 410 in the tipping material 400 are respectively radially aligned with the locations of three grooves in the filter 300 to allow external air to enter the grooves and pass through an additive material 350, as described above.
  • the three apertures 410 in the tipping material 400 also he directly below the ring 500, i.e.
  • the aperture 510 in the ring 500 is axially aligned with the apertures 410 in the tipping material 400, such that external air is prevented from entering a particular groove unless the aperture 510 in the ring 500 is aligned with the aperture 410 in the tipping material 400 corresponding to that groove.
  • the additive material 350 in each of the grooves may comprise a different ilavourant material 350.
  • the ring 500 can be rotated to selectively align the aperture 510 in the ring 500 with any one of the three apertures 410 in the tipping material 400.
  • aligning the aperture 510 in the ring 500 with a particular aperture 410 in the tipping material 400 will allow external air to be drawn in the groove located radially inwards from the particular aperture 410 in the tipping material 400. This may be achieved by imparting suction on the mouth end of the filter 300. External air drawn into the groove may be flavoured by the ilavourant 350 located in the groove before exiting the filter 300 through the mouth end of the groove or through the end face of the filter material 310 via the slit 341.
  • flavour of the gaseous flow exiting the filter 300 may be switched from one flavourant material 350 to another flavourant material 350 part way through smoking the smoking article 00 by rotating the ring 500.
  • flavour of the gaseous flow may be switched from "flavoured” to “unflavoured” or vice versa by respectively rotating the ring 500 between an open configuration and a closed configuration, or between a closed configuration and an open configuration.
  • a pack containing a plurality of identical smoking articles 100 may therefore allow a user to selectively smoke a variety of differently flavoured smoking articles 100.
  • An example method of manufacturing the filter 300 will now be described.
  • a plug of filter material can be formed by feeding a substantially continuous flow of cellulose acetate tow into a funnel to provide a generally cylindrical body of cellulose acetate material.
  • the cellulose acetate material can be passed through a garniture that attaches plugwrap to the filter material from a plugwrap reel.
  • the resulting wrapped filter material can subsequently be cut into individual segments for use in making the filter 300.
  • the cut length may be suitable for producing two cigarettes in tandem or individual cigarettes, as required.
  • the cutting may be carried out as a multi stage process in which lengths of filter material for use with multiple cigarettes are first cut and are then later cut into lengths suitable for use in manufacturing cigarettes in tandem or individually.
  • the grooves into the filter 300 may be imparted by placing a length of filter material 310 wrapped with plugwrap 320 between first and second substantially parallel plates.
  • the second plate is heated and provided with elongate groove forming projections, one for each of the grooves in the filter.
  • the second plate may comprise three groove forming projections in order to form three substantially equally spaced grooves around the circumference of the filter 300.
  • the first plate is moved over and parallel to the second plate with the filter material 310 engaged between the plates, so as to roll the filter material 310 over the projections described above.
  • the plugwrap 320 may be driven inwardly into the grooves so as to line both the grooves and the cylindrical exterior periphery of the filter material 310. This is shown in Figure 4.
  • the grooves may be formed in the filter material 310 before the filter material is wrapped in the plugwrap 320. This is shown in Figure 6.
  • a liner 340 comprising a layer of sheet lining material may be inserted into each of the groves as described above and shown in Figures 4 and 6. This may be carried out either before or after the filter material 310 is wrapped in plug wrap, as shown in Figures 6 and 4 respectively.
  • An additive material 350 for example comprising a flavourant material 350 as described above, may be inserted into the grooves before the filter 300 is wrapped in tipping material 400. This may be carried out using an injection device comprising an appropriate injection nozzle configured to introduce additive material 350 into the grooves from an additive material reservoir.
  • the filter 300 may comprise an approximately cylindrical and hollow plastics cap or plastics shell which is coaxially connected to the rod of smokeable material 200 using appropriate tipping material.
  • the interior of the plastics cap may be provided with filter material such as cellulose acetate as described above, with additive material being provided directly under the surface of the plastics shell.
  • the shell may be provided with apertures to allow external air to be drawn through the additive material by suction imparted on the end of the filter.
  • the apertures can be selectively opened and closed by rotation of an external control apparatus such as a ring, for example in a manner similar to that described above.

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

Abstract

L'invention concerne un filtre d'article pour fumeurs comprenant un matériau additif et un appareil de régulation conçu pour réguler l'accès de l'air extérieur au matériau additif.
PCT/EP2010/064549 2009-10-02 2010-09-30 Filtre contenant un matériau additif WO2011039302A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009230410A JP2011072296A (ja) 2009-10-02 2009-10-02 添加剤を含むフィルター
JP2009-230410 2009-10-02

Publications (1)

Publication Number Publication Date
WO2011039302A1 true WO2011039302A1 (fr) 2011-04-07

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Application Number Title Priority Date Filing Date
PCT/EP2010/064549 WO2011039302A1 (fr) 2009-10-02 2010-09-30 Filtre contenant un matériau additif

Country Status (3)

Country Link
JP (1) JP2011072296A (fr)
AR (1) AR080550A1 (fr)
WO (1) WO2011039302A1 (fr)

Cited By (12)

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CN105011360A (zh) * 2015-07-07 2015-11-04 梅笑雨 精确调整通风度的卷烟
CN105192887A (zh) * 2015-10-21 2015-12-30 云南中烟工业有限责任公司 一种可选择加香的旋转式卷烟滤嘴
WO2016092295A1 (fr) * 2014-12-08 2016-06-16 British American Tobacco (Investments) Limited Article à fumer, section de filtre pour article à fumer et procédé de fabrication d'un article à fumer
US9549572B2 (en) 2011-11-07 2017-01-24 Philip Morris Products S.A. Smoking article with movable vapour release component
US9730470B2 (en) 2011-05-13 2017-08-15 British American Tobacco (Investments) Limited Filter for a smoking article
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WO2019110715A1 (fr) * 2017-12-08 2019-06-13 Essentra Filter Products Development Co. Pte. Ltd. Filtre de fumée de tabac
CN114403499A (zh) * 2021-12-13 2022-04-29 江苏大亚滤嘴材料有限公司 一种风味香精及其应用于空管滤棒加香
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US9730470B2 (en) 2011-05-13 2017-08-15 British American Tobacco (Investments) Limited Filter for a smoking article
US9549572B2 (en) 2011-11-07 2017-01-24 Philip Morris Products S.A. Smoking article with movable vapour release component
CN103462216A (zh) * 2012-06-06 2013-12-25 豪尼机械制造股份公司 过滤嘴香烟的穿孔
EP2671462A1 (fr) * 2012-06-06 2013-12-11 HAUNI Maschinenbau AG Perforation de cigarettes à filtre
US9795163B2 (en) 2012-12-21 2017-10-24 British American Tobacco (Investments) Limited Smoking article
WO2014096780A2 (fr) * 2012-12-21 2014-06-26 British American Tobacco (Investments) Limited Article à fumer
WO2014096780A3 (fr) * 2012-12-21 2014-11-20 British American Tobacco (Investments) Limited Article à fumer
US10136671B2 (en) 2012-12-21 2018-11-27 British American Tobacco (Investments) Limited Smoking article
US10092033B2 (en) 2012-12-21 2018-10-09 British American Tobacco (Investments) Limited Smoking article
US11330837B2 (en) 2014-06-30 2022-05-17 Nicoventures Trading Limited Flow control device
RU2672304C1 (ru) * 2014-12-08 2018-11-13 Бритиш Америкэн Тобэкко (Инвестментс) Лимитед Курительное изделие, секция фильтра курительного изделия и способ изготовления курительного изделия
US20170360086A1 (en) * 2014-12-08 2017-12-21 British American Tobacco (Investments) Limited A smoking article, a smoking article filter section and a method of manufacturing a smoking article
AU2015359136B2 (en) * 2014-12-08 2018-04-26 British American Tobacco (Investments) Limited A smoking article, a smoking article filter section and a method of manufacturing a smoking article
CN106998797A (zh) * 2014-12-08 2017-08-01 英美烟草(投资)有限公司 吸烟制品、吸烟制品过滤器部分和制造吸烟制品的方法
WO2016092295A1 (fr) * 2014-12-08 2016-06-16 British American Tobacco (Investments) Limited Article à fumer, section de filtre pour article à fumer et procédé de fabrication d'un article à fumer
CN105011360A (zh) * 2015-07-07 2015-11-04 梅笑雨 精确调整通风度的卷烟
CN105192887A (zh) * 2015-10-21 2015-12-30 云南中烟工业有限责任公司 一种可选择加香的旋转式卷烟滤嘴
CN105192887B (zh) * 2015-10-21 2019-01-08 云南中烟工业有限责任公司 一种可选择加香的旋转式卷烟滤嘴
GB2560162A (en) * 2017-02-24 2018-09-05 British American Tobacco Investments Ltd Filter for tobacco industry product
WO2019110715A1 (fr) * 2017-12-08 2019-06-13 Essentra Filter Products Development Co. Pte. Ltd. Filtre de fumée de tabac
CN114403499A (zh) * 2021-12-13 2022-04-29 江苏大亚滤嘴材料有限公司 一种风味香精及其应用于空管滤棒加香

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