Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
  • A24D1/02—Cigars; Cigarettes with special covers
• • 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
  • A24D3/06—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 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
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
  • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
• • 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
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
  • A24D3/163—Carbon

Definitions

• This invention relates to a filter element for a smoking article.
• Smoking articles such as cigarettes, are well known in the art.
• Conventional cigarettes allow the user to inhale smoke from a rod of tobacco through a filter.
• This type of pre-made cigarette is still widely used.
• various modified cigarettes have been produced to alter the smoking experience with additives.
• One type of modified cigarette known in the art provides a capsule in the filter. The user may crush the capsule before or during smoking to release an additive into the smoke stream to modify the physical properties thereof.
• the capsules may contain flavouring, such as menthol, or non-flavoured contents in a liquid, gel or pulverised form.
• Capsule cigarettes have allowed users to modify the smoking experience.
• Providing an additive in capsule form presents users with an alternative to the ordinary smoking experience with a conventional cigarette.
• the user crushes the capsule to release the additive.
• Provision of flavoured additives in capsules also prevents loss of volatile components such as flavourings until capsules are crushed by users before or during smoking.
• the user is currently limited in choice by these capsule cigarettes.
• Both the type and quantity of additive are pre-determined and there is no opportunity for users to select the additive(s) from one cigarette to another or to combine different additives or even to adjust quantities of additives they want to use during a specific smoking experience.
• the invention provides a solution to that need by means of a filter element for a smoking article, the filter element comprising: at least one plug of filter material; and a wrapper at least partially surrounding the plug of filter material, wherein the wrapper comprises an aperture with a covering which the user may open to access the plug of filter material and that may be resealed over the plug of filter material.
• the covering may comprise a tab capable of resealing the covering.
• the tab may comprise re-sealable adhesive.
• the tab and adhesive are configured to provide an airtight closure of the covering over the aperture to prevent unwanted ventilation of the filter element.
• the wrapper may comprise an inner layer and an outer layer.
• the tab may be cut into the outer layer, such that when the covering is closed the tab secures the outer layer to the inner layer.
• the aperture may be cut into the inner layer, and preferably be slightly smaller than the covering such that the tab can be resealed over parts of the inner layer delimiting a frame or border to the aperture.
• the filter element may comprise a cavity below the aperture. Said cavity may be shaped into the at least one plug of filter material. Alternatively, the filter element may comprise at least two plugs of filter material spaced from each other to delimit a cavity between the plugs and below the aperture.
• An additive may be manually inserted into the cavity defined in or within the plug or plugs of filter material.
• the additive may be a flavouring or any other smoke altering or filtering substance.
• the additive may be provided in any form, such as solid, liquid or pulverised form.
• the additive may preferably be embedded in a capsule capable of rupture.
• the invention also provides a smoking article comprising a filter element according to the invention and a tobacco rod, wherein a wrapping material connects one end of the tobacco rod to an end of the filter element.
• the wrapping material may be the wrapper of the filter component or a different wrapping material.
• the filter element of the invention offers extended flexibility of use to users wishing to modify their smoking experiences according to personal choice and uniquely for each smoking article used.
• Smoking articles well known in the art either provide no additives, or an additive of a pre-determined type and quantity, with no option to change it.
• the user can choose an additive type, choose the quantity he or she wishes to use for a particular smoking article and furthermore may choose a combination of additives to design the smoking experience he wishes.
• the aperture and covering setup of the filter element of the invention provides ease of use. All the user needs to do is to select at least one additive, to open the covering and to insert the selected additive before closing the covering and proceeding to smoking as usual.
• FIG. 1 shows a perspective view of a smoking article 1 comprising a filter element 2 of the invention.
• FIG. 1 shows cross-sectional views of smoking articles 1 comprising filter elements 2 according to different embodiments of the invention.
• a smoking article 1 in this case a cigarette, comprises a filter element 2 and a tobacco rod 3.
• the filter element 2 comprises at least one plug of filter material 6 wrapped with at least one outer wrapper 13, commonly known in the art as a tipping of the smoking article 1 .
• An end of the tobacco rod 3 is connected to an end of the filter element 2 by an overlapping of the wrapper 13, which forms a tight collar secured by adhesive around at least part of the filter element 2 and part of the tobacco rod 3 to secure the assembly.
• the plug of filter material 6 is made of any known filter material used for smoking articles such as crimped cellulose acetate tow, paper, synthetic and/or natural fibres or a mixture thereof.
• the filter element 2 comprises an aperture 4 formed in the wrapper 13.
• Said aperture 4 is defined at least by a re-sealable covering 5 that is cut into wrapper 13. Thereby, the aperture 4 is delimited by the surface area of the covering 5 cut in the wrapper.
• the covering 5 is re-sealable over the aperture, for example by a re-sealable adhesive applied to the inner surface of the covering 5.
• the aperture 4 may take any shape, including rectangular, circular and elliptical.
• the wrapper 13 is a laminate comprising at least an inner layer 8 and an outer layer 9.
• the aperture 4 is cut into the inner layer 8 and is smaller than the covering 5.
• the covering 5 is cut into the outer layer 9 and comprises a tab 10 to ease opening and closing thereof.
• the covering 5 is, in this example, at least partially coated on its inner surface with a re-sealable adhesive, which sticks the outer layer 9 to the inner layer 8 around the aperture 4.
• the inner layer 8 and outer layer 9 can have a different nature, e.g.
• both inner and outer layers 8, 9 may be paper based and the inner layer being coated, for example with varnish, on its outermost surface at least to allow for easy resealing on the covering 5 onto the inner layer 8 about the aperture 4.
• the filter element 2 of the invention preferably comprises a cavity 7 formed below the aperture 4 in the at least one plug 6 of filter material or between two plugs 6 of filter material.
• Such cavity 7 allows for insertion of an additive of choice into the filter element 2 by a user through the aperture 4.
• the additive may be of any kind and any form capable of altering the smoke stream during smoking of the smoking article 1 by a user, as will be described hereinafter in relation to figures 2a to 2d.
• the additive may be a breakable capsule 1 1 to be manually inserted into the cavity 7 as represented in figure 1 , said capsule containing, for example, a flavoured or non-flavoured composition.
• the aperture 4 may be provided to the user open or closed. Where the aperture 4 is provided closed, the user must first open the aperture 4. When open, the aperture 4 reveals the cavity 7 defined by the plug of filter material 6. The user is then able to insert an additive, provided separately, into the cavity 7. In an alternative embodiment, a liquid additive may be inserted into a plug of filter material 6 that does not define a cavity. After inserting the additive, the user may close the aperture 4. The user can secure the closure by means of the tab 10 and simply press close the covering 5, which sticks on to the overlapping inner layer 8.
• the user may then proceed to smoke the smoking article 1 .
• the additive is provided in the form of a capsule 1 1
• the user may crush this capsule 1 1 at any point before or during smoking to release its content and alter the smoke stream.
• Figures 2a-d show longitudinal cross-sectional views of a smoking article 1 according to the invention as represented in figure 1 , where the aperture 4 over the cavity 7 is closed by the covering 5 in wrapper 13.
• the filter element 2 comprises a single plug of filter material 6 wherein a cavity 7 is shaped within the plug underneath the aperture 4 in the wrapper.
• the cavity 7 does not extend across the entire filter element 2 normal to the longitudinal axis.
• a cavity 7 is defined by two plugs 61 , 62 of filter material.
• the plugs 61 , 62 of filter material may be the same or different sizes and may be of the same or different composition.
• One plug 61 of filter material forms the mouth end of the filter element 2; the other plug 62 of filter material forms the tobacco end of the filter element 2.
• both plugs 61 , 62 may be formed of crimped cellulose acetate tow.
• the mouth end plug 61 may be of crimped cellulose acetate tow while the tobacco end plug 62 may be formed of cellulose acetate tow, either crimped with plasticizer or in the form of randomly oriented fibres, admixed with an adsorbent material, for example activated charcoal.
• the cavity 7 extends across the filter element 2 normal to the longitudinal axis of the smoking article 1 . In figures 2a-c, the cavity 7 is filled by one or several individual capsule(s) 1 1 .
• the capsule(s) 1 1 may contain an additive such as flavouring, in a liquid or gel solution. Before or during smoking, the user may crush the capsule(s) 1 1 to release the additive it contains and alter the smoke stream properties to provide a different smoking experience.
• the cavity 7 is filled by more than one capsule 1 1 .
• a user is thereby given the freedom to choose the amount of additive he or she wishes to have in each smoking article 1 .
• Providing the additives separately to the filter element 2 enables the user to choose one or more additives for each smoking article 1 smoked. It also enables the user to adjust the dose and/or nature of additive as desired for each smoking article 1 .
• the cavity 7 is filled by additive in a pulverised or microencapsulated form 12.
• additives such as natural fine cut leaf parts, adsorbent powders, granules or particles, do not need to be provided in capsule form. Since the cavity 7 may be filled by items other than capsules, the invention allows the user to select and experiment with different additives to alter his smoking experiences according to his own choices.
• the filter element 2 and smoking article 1 of the invention provide users with the freedom of choice to uniquely design and alter their smoking experience.
• the filter element 2 of the invention is simple to manufacture and use and, when joined to a tobacco rod 3, allows the user to adjust the smoking experience with additives of his choice in the context of a familiar smoking article 1 .

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

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=51257370

Family Applications (1)

Country Status (6)

Cited By (6)

Families Citing this family (2)

Citations (3)

Family Cites Families (7)

• 2015
  • 2015-07-28 CA CA2961106A patent/CA2961106A1/en not_active Abandoned
  • 2015-07-28 KR KR1020177004773A patent/KR102188631B1/ko active IP Right Grant
  • 2015-07-28 WO PCT/EP2015/067291 patent/WO2016016252A1/en active Application Filing
  • 2015-07-28 JP JP2017505443A patent/JP6629294B2/ja not_active Expired - Fee Related
  • 2015-07-28 EA EA201790208A patent/EA031921B1/ru not_active IP Right Cessation
  • 2015-07-28 EP EP15742292.4A patent/EP3174411A1/en not_active Withdrawn

Patent Citations (3)

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