WO2015193242A2 - Filtre à fumée de tabac - Google Patents

Filtre à fumée de tabac Download PDF

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Publication number
WO2015193242A2
WO2015193242A2 PCT/EP2015/063342 EP2015063342W WO2015193242A2 WO 2015193242 A2 WO2015193242 A2 WO 2015193242A2 EP 2015063342 W EP2015063342 W EP 2015063342W WO 2015193242 A2 WO2015193242 A2 WO 2015193242A2
Authority
WO
WIPO (PCT)
Prior art keywords
tobacco smoke
filter
filtering material
plasticiser
smoke filtering
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.)
Ceased
Application number
PCT/EP2015/063342
Other languages
English (en)
Other versions
WO2015193242A3 (fr
Inventor
James Reed
Philip WATKINSON
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.)
Filtrona Filters Ltd
Filtrona Development Co Pte Ltd
Original Assignee
Essentra Filter Products Ltd
Essentra Filter Products Development Co Pte 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 Essentra Filter Products Ltd, Essentra Filter Products Development Co Pte Ltd filed Critical Essentra Filter Products Ltd
Publication of WO2015193242A2 publication Critical patent/WO2015193242A2/fr
Publication of WO2015193242A3 publication Critical patent/WO2015193242A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of 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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A24D3/0216—Applying additives to filter materials the additive being in the form of capsules, beads or the like
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A24D3/022—Applying additives to filter materials with liquid additives, e.g. application of plasticisers

Definitions

  • the present invention relates to tobacco smoke filters for smoking articles such as cigarettes, in particular filters which include one or more (e.g. flavour containing) frangible capsules.
  • Tobacco smoke filters which include a frangible capsule, or a plurality of frangible capsules, are well-known. These capsules contain an additive (typically a liquid flavouring agent) and the smoker applies pressure to the filter to break the capsule therein in order to release the flavouring agent. The smoker would usually break the capsule immediately prior to smoking, although he may choose to break it at any stage of the smoking process (or not at all). Such capsule filter products are consequently known as 'flavour-on-demand', indicating that the smoker chooses when, and if, he requires the release of flavour contained within the capsule.
  • an additive typically a liquid flavouring agent
  • the most common type of capsule product - a filter with a single capsule - suffers from the disadvantage that the smoker either has to choose between no flavour (when the capsule is intact) or a large dose of flavour (when the capsule is ruptured).
  • This can be overcome by applying a flavour (typically menthol) to the filter in addition to that in the capsule, so that the initial product is flavoured and the rupturing of the capsule then either provides a flavour boost or a change of flavour.
  • Applying flavour to the filter also provides a greater aroma when the pack is opened.
  • a disadvantage with adding flavours to a capsule filter is that there can be an interaction with the capsule causing it to weaken or prematurely fail. This is the case when propylene glycol is used as the solvent for the flavouring agent. Tests showed a reduction of around 40% in the crush strength of a typical capsule used in cigarette filters after immersion in propylene glycol for one hour and there was also a higher variability in crush strength after immersion. Propylene glycol is the most commonly used solvent for menthol crystals, for example as a 70:30 mix of menthol crystals: propylene glycol. However, as discussed above, propylene glycol does degrade certain capsule shell materials - e.g. causing a reduction in shelf-life. Accordingly, propylene glycol is considered unsuitable for use with capsule filters.
  • menthol Another means of adding menthol to a filter is to apply molten menthol to the filter.
  • Suitable equipment for this purpose is available from SPI Developments or Kohl Group. In such equipment, menthol crystals are taken above their melting temperature and then injected into the filter by means of fluid pressure, gravity or compressed air.
  • recrystallization of the menthol from the molten state leads to undesirable changes within the capsule.
  • menthol it is desirable to add menthol to a filter containing a capsule, or plurality of capsules, in such a way that does not make use of propylene glycol, avoids stability issues associated with molten menthol and can provide high levels of menthol addition in order to give the user a high initial menthol taste sensation without the necessity of having to rupture the capsule.
  • a tobacco smoke filter or filter element comprising:
  • a longitudinally extending (e.g. substantially cylindrical) core of tobacco smoke filtering material e.g. substantially cylindrical core of tobacco smoke filtering material
  • a receptacle e.g. a capsule, e.g. a frangible capsule
  • a first additive e.g. a (first) flavouring agent
  • flavouring agent located on and/or in the tobacco smoke filtering material
  • the further additive e.g. (further) flavouring agent, e.g. menthol
  • the further additive e.g. (further) flavouring agent, e.g. menthol
  • the filter or filter element may include plasticiser in an amount which is 4 to 20% by weight of the tobacco smoke filtering material, for example 8 to 20% by weight of the tobacco smoke filtering material, for example 9 to 20% by weight of the tobacco smoke filtering material, for example 9 to 19% by weight of the tobacco smoke filtering material, for example 9 to 17% by weight of the tobacco smoke filtering material.
  • the filter or filter element includes plasticiser in an amount which is 4 to 17% by weight of the tobacco smoke filtering material, for example 9 to 17% by weight of the tobacco smoke filtering material.
  • menthol e.g. natural menthol crystals or synthetic menthol
  • triacetin or other plasticiser which does not adversely affect receptacle (capsule) integrity
  • this solution e.g. by spraying or injecting, onto or into a filter containing a frangible capsule, or plurality of frangible capsules.
  • the applicants method/filter allows high flavour (e.g.
  • menthol loading on the filtering material (which gives the user a high initial flavour/menthol taste sensation without their having to rupture the capsule), while avoiding problems associated with the stability of molten menthol, and also avoiding reagents (e.g. propylene glycol) which weaken/destroy the capsule.
  • reagents e.g. propylene glycol
  • a tobacco smoke filter or filter element comprising:
  • a longitudinally extending (e.g. substantially cylindrical) core of tobacco smoke filtering material e.g. substantially cylindrical core of tobacco smoke filtering material
  • a receptacle e.g. a capsule, e.g. a frangible capsule
  • a first additive e.g. a (first) flavouring agent
  • flavouring agent located on and/or in the tobacco smoke filtering material
  • plasticiser wherein the plasticiser is present in an amount which is 4 to 20% by weight of the tobacco smoke filtering material, for example 4 to 17% by weight of the tobacco smoke filtering material, for example 9 to 17% by weight of the tobacco smoke filtering material.
  • the filter or filter element may include plasticiser in an amount which is 4 to 20% by weight of the tobacco smoke filtering material, for example 8 to 20% by weight of the tobacco smoke filtering material, for example 9 to 20% by weight of the tobacco smoke filtering material, for example 9 to 19% by weight of the tobacco smoke filtering material, for example 9 to 17% by weight of the tobacco smoke filtering material.
  • the filter or filter element includes plasticiser in an amount which is 4 to
  • the tobacco smoke filtering material for example 9 to 17% by weight of the tobacco smoke filtering material.
  • a tobacco smoke filter or filter element comprising:
  • flavouring agent located on and/or in the tobacco smoke filtering material
  • plasticiser wherein the plasticiser is present in an amount which is 8 to 20% by weight of the tobacco smoke filtering material, for example 9 to 20% by weight of the tobacco smoke filtering material, for example 9 to 17% by weight of the tobacco smoke filtering material.
  • filters and filter elements according to aspects of the invention are capable of carrying a high load of flavouring agent and plasticiser, without degrading the receptacle (e.g. capsule).
  • flavouring agent e.g. menthol
  • Filters and filter elements according to aspects of the invention may provide high levels of menthol addition in order to give the user a high initial menthol taste sensation without the necessity of having to rupture the capsule.
  • the longitudinally extending (e.g. substantially cylindrical) core comprises tobacco smoke filtering material.
  • the tobacco smoke filtering material may be, for example, any of those materials (usually filamentary, fibrous, web or extruded) which are conventionally employed for tobacco smoke filter manufacture.
  • the tobacco smoke filtering material may be, for example, natural or synthetic filamentary tow, e.g. of cotton or plastics such as polyethylene or polypropylene, or cellulose acetate filamentary tow. It may comprise, for example, natural or synthetic staple fibres, cotton wool, a web material such as paper (usually creped), an (e.g. synthetic) non-woven material, and/or an extruded material (e.g. starch, synthetic foams, extruded foams).
  • the filtering material is cellulose acetate (e.g. in the form of a filamentary tow).
  • the filtering material may be cellulose acetate to which a plasticiser has (already) been applied (e.g. plasticised filamentary tow).
  • Triacetin is, as is well known in the art, typically applied to cellulose acetate filters as a plasticiser (e.g. at around 6-8% w/w).
  • Triacetin may be applied to cellulose acetate as normal (i.e. without menthol dissolved therein) to plasticize the filter, preferably via a separate step within the same in-line process.
  • a plasticiser triacetin
  • the plasticiser is applied to the cellulose acetate alone, to plasticise the cellulose acetate.
  • both plasticiser and flavouring agent are applied to the cellulose acetate, as a solution of flavouring agent in the plasticiser, to load the flavouring agent on to the filtering material (plasticised cellulose acetate), according to the invention.
  • the receptacle e.g. a capsule, e.g. a frangible capsule
  • the longitudinally extending e.g.
  • the receptacle is a capsule, for example a frangible capsule.
  • Frangible or breakable capsules for filters are well known in the art.
  • the frangible or breakable capsule may include a frangible/breakable outer layer or shell which surrounds the (first) additive [e.g. a (first) flavouring agent].
  • the (first) additive e.g. a (first) flavouring agent
  • the (first) additive may be in the form of a liquid, such that the additive is held within the outer layer/shell (e.g. within an enclosure defined by the inner surface of the outer layer/shell).
  • the outer layer/shell of the capsule may comprise gelatin.
  • the outer layer/shell may comprise one or more of gelatin, gellan gum, agar, an alginate, a carrageenan, a pectin, arabic gum, ghatti gum, pullulan gum, mannan gum or modified starch.
  • the thickness of the outer layer (shell) of the capsule may be 10-500 microns, preferably 30-150 microns, more preferably 50-80 microns.
  • the outer diameter of the capsule may be 2 to 8 mm, for example 3 to 7 mm, for example 3 to 5 mm, for example 3.5 to 4.5 mm.
  • the first additive is a (first) flavouring agent.
  • the first additive is in the form of a liquid.
  • the (first) flavouring agent may be any flavouring agent known for use in tobacco smoke filters or filter elements.
  • the flavouring agent may be menthol, spearmint, peppermint, nutmeg, cinnamon, clove, lemon, chocolate, peach, strawberry, vanilla etc.
  • the first additive [e.g. (first) flavouring agent] may contain nicotine or a salt or derivative thereof.
  • the (first) flavouring agent is menthol.
  • the filter or filter element comprises a further additive [e.g. (further) flavouring agent] located (e.g. disposed, e.g. dispersed) on and/or in the tobacco smoke filtering material.
  • the further additive is a (further) flavouring agent.
  • the further flavouring agent may be any flavouring agent known for use in tobacco smoke filters or filter elements.
  • the further flavouring agent may be menthol, spearmint, peppermint, nutmeg, cinnamon, clove, lemon, chocolate, peach, strawberry, vanilla etc.
  • the further additive [e.g. (further) flavouring agent] may contain nicotine or a salt or derivative thereof.
  • the further flavouring agent is menthol.
  • the first and further flavouring agents may be the same or different.
  • the further additive e.g. (further) flavouring agent
  • the plasticiser may be any plasticiser, for example any plasticiser which is known for use with a tobacco smoke filtering material.
  • the plasticiser is triacetin.
  • the solution comprises further additive [e.g. (further) flavouring agent] dissolved in the plasticiser (e.g. triacetin) wherein the concentration of plasticiser (e.g. triacetin) in the solution is 5% to 40%, preferably 10% to 30%, more preferably 20% (plasticiser).
  • the filter may further comprise a wrapper engaged around the longitudinally extending (e.g. substantially cylindrical) core.
  • the wrapper may be a paper, e.g. plug wrap paper and may be coated to minimise absorption of liquids released from the ruptured capsule, as is well-known in the prior art.
  • the wrapper may include a still further (e.g. third) flavouring agent located thereon, which may be any flavouring agent known for use in tobacco smoke filters or filter elements (e.g. the flavouring agent may be menthol, spearmint, peppermint, nutmeg, cinnamon, clove, lemon, chocolate, peach, strawberry, vanilla etc.).
  • a filter according to the invention may be used on its own e.g. as a single segment filter. Such filters are well known in the art.
  • a filter element according to the invention may be used as a segment, for example the mouth end segment, of a multi-segment filter, e.g. a dual, triple, or other multiple filter.
  • a filter element according to the invention may be used as another e.g. upstream segment, of a multi-segment filter - for example the tobacco end segment, middle segment etc. of a multi-segment filter, e.g. a dual, triple, or other multiple filter.
  • Multi-segment filters are well known in the art. The other elements of the multi- segment filter - e.g.
  • those which are not according to the invention - may comprise activated carbon or other particulate additive(s), flavouring agent(s) etc.
  • Filters according to the invention, or filters incorporating a filter element according to the invention may be used (made, sold) as stand-alone filters for later inclusion in a cigarette, for example for use by smokers who assemble their own cigarettes (that is as a roll-your-own product).
  • the tobacco smoke filter or filter element may be of length 12 to 40 mm, e.g. 15 to
  • 35 mm e.g. 20 to 30 mm.
  • the tobacco smoke filter (or filter element) may be of circumference 14 to 28 mm, for example 16 to 26mm, for example 16 to 17 mm or 24 to 25 mm.
  • a filter of the invention (or a filter which includes a filter element of the invention) is joined to a wrapped tobacco rod with one end of the filter towards the tobacco.
  • the filter may be joined to the wrapped tobacco rod by ring tipping [which engages around just the adjacent ends of the (wrapped) filter and rod to leave much of the filter wrap exposed], for example transparent ring tipping.
  • the filter may be joined by a full tipping overwrap (which engages around the full filter length and the adjacent end of the tobacco rod).
  • the full tipping overwrap may be transparent.
  • the filter, filter element or filter cigarette according to the invention may be ventilated by methods well known in the art, e.g. by use of a pre-perforated or air- permeable wrapper, and/or laser perforation of the wrapper and, if present, tipping overwrap.
  • a ventilating full tipping overwrap may likewise be inherently air-permeable or provided with ventilation holes, and in ventilated products where both outer wrapper and tipping overwrap are present ventilation through the overwrap will usually (and preferably) be in register with that through the plugwrap. Ventilation holes through the filter outer wrapper, or through a tipping overwrap, or through both simultaneously, may be made by laser perforation during filter or filter cigarette production, as is well known in the art.
  • a multiple rod comprising a plurality (e.g. 2, 4, 6 etc.) of filters (or filter elements) as described above and/or herein integrally joined end-to-end in a mirror image relationship.
  • a tobacco smoke filter or filter element e.g. tobacco smoke filter or filter element comprising a longitudinally extending (e.g. substantially cylindrical) core of tobacco smoke filtering material; a receptacle (e.g. a capsule, e.g. a frangible capsule) for a first additive [e.g. a (first) flavouring agent] located in (e.g. fully enclosed within) the longitudinally extending (e.g. substantially cylindrical) core; and a further additive [e.g. (further) flavouring agent] located on and/or in the tobacco smoke filtering material;] the method comprising the steps of:
  • a train of tobacco smoke filtering material e.g. a train of tobacco smoke filtering material to which a plasticiser (e.g. triacetin) has been applied;
  • a solution comprising a further additive [e.g. (further) flavouring agent] dissolved in a plasticiser (e.g. triacetin) to the advancing tobacco smoke filtering material;
  • a plasticiser e.g. triacetin
  • inserting receptacles e.g. capsules, e.g. a frangible capsules
  • a first additive into the advancing tobacco smoke filtering material (to which the additive has been applied), at (e.g. predetermined, e.g. longitudinally spaced) locations along the (e.g. advancing) train of tobacco smoke filtering material;
  • the solution may be applied to the advancing tobacco smoke filtering material by, for example, spraying or injecting the solution.
  • the solution is preferably applied directly to the filtering material by a spray nozzle within the stuffer jet assembly (as is well-known in the prior art) to evenly distribute the solution over a wide area of filter material.
  • the spraying may take place in-line immediately before capsules are inserted into the filtering material (again using methods well-known in the prior art).
  • the further additive e.g. (further) flavouring agent
  • the plasticiser may be any plasticiser, for example any plasticiser which is known for use with a tobacco smoke filtering material.
  • the plasticiser is triacetin.
  • the solution comprises further additive [e.g. (further) flavouring agent] dissolved in the plasticiser (e.g. triacetin) wherein the concentration of plasticiser (e.g. triacetin) in the solution is 5% to 40%, preferably 10% to 30%, more preferably 20% plasticiser.
  • the tobacco smoke filtering material may be, for example, any of those materials
  • the tobacco smoke filtering material may be, for example, natural or synthetic filamentary tow, e.g. of cotton or plastics such as polyethylene or polypropylene, or cellulose acetate filamentary tow. It may comprise, for example, natural or synthetic staple fibres, cotton wool, a web material such as paper (usually creped), an (e.g. synthetic) non-woven material, and/or an extruded material (e.g. starch, synthetic foams, extruded foams).
  • natural or synthetic filamentary tow e.g. of cotton or plastics such as polyethylene or polypropylene, or cellulose acetate filamentary tow.
  • It may comprise, for example, natural or synthetic staple fibres, cotton wool, a web material such as paper (usually creped), an (e.g. synthetic) non-woven material, and/or an extruded material (e.g. starch, synthetic foams, extruded foams).
  • the filtering material is cellulose acetate (e.g. in the form of a filamentary tow).
  • the filtering material may be cellulose acetate to which a plasticiser has (already) been applied (e.g. plasticised cellulose acetate).
  • Triacetin is, of course, typically applied to cellulose acetate filters as a plasticiser (e.g. at around 6-8% w/w).
  • Triacetin may be applied to cellulose acetate as normal (i.e. without menthol dissolved therein) to plasticize the filter, preferably via a separate step within the same in-line process.
  • a plasticiser triacetin
  • the plasticiser e.g. triacetin
  • the plasticiser e.g. triacetin
  • both plasticiser e.g. triacetin
  • flavouring agent are applied to the cellulose acetate, as a solution of flavouring agent in the plasticiser, to load the flavouring agent on to the filtering material (plasticised cellulose acetate), according to the invention.
  • the plasticisers used in the first and second stages may be the same or different.
  • the plasticiser may be applied in the first stage in an amount which is 3 to 12% by weight of the tobacco smoke filtering material.
  • the tobacco smoke filtering material may be tobacco smoke filtering material to which a plasticiser has been applied in an amount which is 3 to 12% by weight of the tobacco smoke filtering material.
  • the solution comprising further additive e.g. (further) flavouring agent, e.g. menthol] dissolved in plasticiser (e.g. triacetin) is applied such that the additional plasticiser (in the solution) is applied to the tobacco smoke filtering material in an amount which is 1 to 5% by weight of the tobacco smoke filtering material.
  • plasticiser e.g. triacetin
  • the solution comprises further additive [e.g. (further) flavouring agent] dissolved in the plasticiser (e.g. triacetin) wherein the concentration of plasticiser (e.g. triacetin) in the solution is 50% to 95%, preferably 60% to 90%, more preferably around 70% plasticiser.
  • concentration of plasticiser e.g. triacetin in the solution is 50% to 95%, preferably 60% to 90%, more preferably around 70% plasticiser.
  • FIGURE 1 illustrates a view, part cut away, of a filter according to an example of the invention.
  • FIG. 1 shows an example of a tobacco smoke filter 1 according to an example of the invention.
  • Tobacco smoke filter 1 includes a longitudinally extending, cylindrical, core 2 of length 30mm and circumference around 25 mm.
  • the core 2 comprises a filamentary tow of cellulose acetate tobacco smoke filtering material having 3 denier per filament and 35,000 total denier which has been plasticised with triacetin (at around 6- 8%w/w), as is well known in the art.
  • the core 2 includes a spherical frangible capsule 3 of diameter 4 mm fully enclosed within the longitudinally extending, cylindrical, core 2.
  • the frangible capsule 3 includes a frangible/breakable outer layer or shell 4 of gelatin which surrounds a first additive, first flavouring agent, in the form of a menthol solution 5.
  • the menthol solution 5 is held within the outer layer/shell 4 within an enclosure defined by the inner surface of the outer layer/shell. This kind of capsule construction is well known in the art.
  • the core 2 includes a further additive, further flavouring agent, in the form of menthol 6 which is dispersed on and in the tobacco smoke filtering material.
  • the menthol 6 is applied to the tobacco smoke filtering material as a solution comprising the menthol dissolved in triacetin (plasticiser), wherein the concentration of plasticiser (e.g. triacetin) in the solution is 20%, by the method set out below.
  • the filter includes plasticiser in a total amount which is about 9 to 11% by weight of the tobacco smoke filtering material.
  • the filter includes a wrapper 8 of paper which is engaged around the core 2 and held in place by a lapped and stuck seam, as is well known in the art.
  • the filter 1 may be joined to a wrapped tobacco rod (not shown) with the upstream end of the core 2 towards the tobacco, to form a filter cigarette.
  • the filter 1 may be joined to the wrapped tobacco rod by ring tipping [which engages around just the adjacent ends of the (wrapped) filter and rod to leave much of the wrapper 8 exposed], by methods which are well known in the art.
  • the filter may be joined by a full tipping overwrap (which engages around the full filter length and the adjacent end of the tobacco rod).
  • the filter or filter element of Figure 1 may be made by an adaptation of conventional methods and apparatus for making capsule filters, for example using an adapted version of the method and apparatus described in US2005/007049.
  • Capsule filters are generally made using a rod-forming unit together with a capsule insertion unit, both of which are known.
  • the capsule insertion unit is capable of placing objects (e.g. frangible capsules 3) at predetermined intervals within a longitudinally advancing continuous length of filter material (e.g. cellulose acetate tow) which is supplied from a source such as a storage bale.
  • the filter material is supplied from the bale and processed using a filter material processing unit (as is well known) and plasticised using a plasticiser unit (as is also well known) to form e.g. plasticised cellulose acetate tow.
  • the continuous length of filter material e.g.
  • plasticised cellulose acetate tow is pulled through a block by the action of the rod-forming unit and individual capsules are inserted at predetermined intervals within the web of filter material (by the capsule insertion unit) within the rod-forming unit.
  • the filter material is directed into a gathering means of the rod-forming unit, as is well known.
  • the gathering means can have a tongue and horn configuration, a gathering funnel configuration, stuff er or transport jet configuration, or the like, and is adapted for use according to the invention as set out below.
  • the gathering means provides for further gathering, compaction, conversion or formation of the cylindrical composite from block into an essentially cylindrical (i.e., rod-like) shape whereby the continuously extending strands or filaments of cellulose acetate tow extend essentially along the longitudinal axis of the cylinder so formed.
  • the filter material which has been compressed into a cylindrical composite, is fed into a wrapping mechanism, which includes endless garniture conveyer belt or other garniture means, as is well known.
  • the wrapping mechanism provides a strip of plugwrap paper to the outer surface of the cylindrical composite in order to produce a continuous wrapped rod, the product rod.
  • the product rod a continuous length of filter material which has capsules incorporated therein at predetermined, spaced intervals, is passed through the rod-forming unit thereby forming a continuous rod, which can be subdivided by severing means into a plurality of rods which are collected and processed in the known manner.
  • a train of tobacco smoke filtering material in the form of plasticised cellulose acetate filtering material is continuously advanced, longitudinally, into the rod forming unit, and the capsule insertion unit is used to insert frangible capsules including menthol into the advancing tobacco smoke filtering material at predetermined, longitudinally spaced, locations along the advancing train of tobacco smoke filtering material.
  • a solution comprising menthol dissolved in triacetin is applied to the advancing tobacco smoke filtering material by a spray nozzle within the gathering means [e.g.
  • the rod forming unit the spraying taking place in-line immediately before the capsules are inserted into the filtering material by the capsule insertion unit.
  • the advancing tobacco smoke filtering material is gathered around the capsules by the rod former to form a continuous product rod comprising a longitudinally extending substantially cylindrical core of tobacco smoke filtering material engaged around the capsules.
  • the continuous product rod is wrapped (by conventional means), and the wrapper secured in place using a lapped and stuck seam.
  • the resulting continuous product rod is then cut by methods known in the art.
  • menthol e.g. natural menthol crystals or synthetic menthol
  • this solution e.g. by spraying or injecting, onto or into a filter containing a frangible capsule, or plurality of frangible capsules.
  • the applicants method/filter allows high flavour (e.g. menthol) loading on the filtering material (which gives the user a high initial flavour/menthol taste sensation without their having to rupture the capsule), while avoiding problems associated with the stability of molten menthol, and also avoiding reagents (e.g. propylene glycol) which weaken/destroy the capsule.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

Selon l'invention, un filtre à fumée de tabac ou élément filtrant comprend: un noyau de matériau de filtration de la fumée de tabac s'étendant longitudinalement; un réceptacle pour un premier additif; et un autre additif présent sur et/ou dans le matériau de filtration; cet autre additif étant appliqué sur le matériau de filtration sous la forme d'une solution comprenant ledit autre additif dissous dans un plastifiant.
PCT/EP2015/063342 2014-06-18 2015-06-15 Filtre à fumée de tabac Ceased WO2015193242A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1410838.5 2014-06-18
GBGB1410838.5A GB201410838D0 (en) 2014-06-18 2014-06-18 Tobacco smoke filter

Publications (2)

Publication Number Publication Date
WO2015193242A2 true WO2015193242A2 (fr) 2015-12-23
WO2015193242A3 WO2015193242A3 (fr) 2016-03-24

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PCT/EP2015/063342 Ceased WO2015193242A2 (fr) 2014-06-18 2015-06-15 Filtre à fumée de tabac

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GB (1) GB201410838D0 (fr)
WO (1) WO2015193242A2 (fr)

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CN107307469A (zh) * 2017-06-22 2017-11-03 云南巴菰生物科技有限公司 一种在滤棒中能够快速释放水分的构件及其制作方法
CN107713008A (zh) * 2017-10-09 2018-02-23 青岛海之林生物科技开发有限公司 一种可包裹水溶香精的非动物性烟用爆珠壁材及制备方法
CN109303353A (zh) * 2017-07-26 2019-02-05 广州南友新能源科技有限公司 一种减少烟雾扩散的烟体结构
WO2021127097A3 (fr) * 2019-12-19 2021-09-10 Juul Labs, Inc. Compositions de gel de nicotine à base organique
JP2023554575A (ja) * 2021-11-19 2023-12-28 ケーティー アンド ジー コーポレイション 加香シートを含む紙管およびこれを含む喫煙物品｛ｐａｐｅｒ ｔｕｂｅ ｃｏｍｐｒｉｓｉｎｇ ｆｌａｖｏｒ ｓｈｅｅｔ ａｎｄ ｓｍｏｋｉｎｇ ａｒｔｉｃｌｅ ｃｏｍｐｒｉｓｉｎｇ ｓａｍｅ｝
JP2023554573A (ja) * 2021-11-22 2023-12-28 ケーティー アンド ジー コーポレイション 加香シートを含む喫煙物品用紙管および喫煙物品｛ｐａｐｅｒ ｔｕｂｅ ｃｏｍｐｒｉｓｉｎｇ ｆｌａｖｏｒ ｓｈｅｅｔ ｆｏｒ ｓｍｏｋｉｎｇ ａｒｔｉｃｌｅ ａｎｄ ｓｍｏｋｉｎｇ ａｒｔｉｃｌｅ｝
US12075822B2 (en) 2016-05-20 2024-09-03 Nicoventures Trading Limited Capsule for tobacco industry product
US12369617B2 (en) 2019-12-19 2025-07-29 Juul Labs, Inc. Metal oxide-based gel nicotine compositions
US12550934B2 (en) 2016-05-20 2026-02-17 British American Tobacco (Investments) Limited Filter for aerosol generating device
US12612312B2 (en) 2019-12-20 2026-04-28 Juul Labs, Inc. Hydrated ionic clay and tobacco material compositions

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US4476807A (en) * 1983-02-18 1984-10-16 R. J. Reynolds Tobacco Company Apparatus for application of additives to cigarette filter tow
US20110271968A1 (en) * 2010-05-07 2011-11-10 Carolyn Rierson Carpenter Filtered Cigarette With Modifiable Sensory Characteristics
GB201021126D0 (en) * 2010-12-13 2011-01-26 Filtrona Int Ltd Tobacco smoke filter
US10609955B2 (en) * 2011-04-08 2020-04-07 R.J. Reynolds Tobacco Company Filtered cigarette comprising a tubular element in filter
US9289012B2 (en) * 2011-07-29 2016-03-22 R. J. Reynolds Tobacco Company Plasticizer composition for degradable polyester filter tow
PL2775867T3 (pl) * 2011-11-07 2019-04-30 Philip Morris Products Sa Wyrób do palenia z segmentem zmiany koloru

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US12075822B2 (en) 2016-05-20 2024-09-03 Nicoventures Trading Limited Capsule for tobacco industry product
US12550934B2 (en) 2016-05-20 2026-02-17 British American Tobacco (Investments) Limited Filter for aerosol generating device
CN107307469A (zh) * 2017-06-22 2017-11-03 云南巴菰生物科技有限公司 一种在滤棒中能够快速释放水分的构件及其制作方法
CN109303353A (zh) * 2017-07-26 2019-02-05 广州南友新能源科技有限公司 一种减少烟雾扩散的烟体结构
CN107713008A (zh) * 2017-10-09 2018-02-23 青岛海之林生物科技开发有限公司 一种可包裹水溶香精的非动物性烟用爆珠壁材及制备方法
US12369617B2 (en) 2019-12-19 2025-07-29 Juul Labs, Inc. Metal oxide-based gel nicotine compositions
JP2025103054A (ja) * 2019-12-19 2025-07-08 ジュール・ラブズ・インコーポレイテッド 有機ベースのニコチンゲル組成物
CN115135175A (zh) * 2019-12-19 2022-09-30 尤尔实验室有限公司 有机基尼古丁凝胶组合物
US12389934B2 (en) 2019-12-19 2025-08-19 Juul Labs, Inc. Organic-based nicotine gel compositions
WO2021127097A3 (fr) * 2019-12-19 2021-09-10 Juul Labs, Inc. Compositions de gel de nicotine à base organique
US12612312B2 (en) 2019-12-20 2026-04-28 Juul Labs, Inc. Hydrated ionic clay and tobacco material compositions
JP2023554575A (ja) * 2021-11-19 2023-12-28 ケーティー アンド ジー コーポレイション 加香シートを含む紙管およびこれを含む喫煙物品｛ｐａｐｅｒ ｔｕｂｅ ｃｏｍｐｒｉｓｉｎｇ ｆｌａｖｏｒ ｓｈｅｅｔ ａｎｄ ｓｍｏｋｉｎｇ ａｒｔｉｃｌｅ ｃｏｍｐｒｉｓｉｎｇ ｓａｍｅ｝
JP2023554573A (ja) * 2021-11-22 2023-12-28 ケーティー アンド ジー コーポレイション 加香シートを含む喫煙物品用紙管および喫煙物品｛ｐａｐｅｒ ｔｕｂｅ ｃｏｍｐｒｉｓｉｎｇ ｆｌａｖｏｒ ｓｈｅｅｔ ｆｏｒ ｓｍｏｋｉｎｇ ａｒｔｉｃｌｅ ａｎｄ ｓｍｏｋｉｎｇ ａｒｔｉｃｌｅ｝

Also Published As

Publication number Publication date
WO2015193242A3 (fr) 2016-03-24
GB201410838D0 (en) 2014-07-30

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