EP2520185A1 - Cigarette filter - Google Patents

Cigarette filter Download PDF

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Publication number
EP2520185A1
EP2520185A1 EP12386012A EP12386012A EP2520185A1 EP 2520185 A1 EP2520185 A1 EP 2520185A1 EP 12386012 A EP12386012 A EP 12386012A EP 12386012 A EP12386012 A EP 12386012A EP 2520185 A1 EP2520185 A1 EP 2520185A1
Authority
EP
European Patent Office
Prior art keywords
filter
cigarette filter
filtration
smoke
retention
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.)
Withdrawn
Application number
EP12386012A
Other languages
German (de)
French (fr)
Inventor
Antonios Mastrokalos
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2520185A1 publication Critical patent/EP2520185A1/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04Tobacco smoke filters characterised by their shape or structure
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04Tobacco smoke filters characterised by their shape or structure
    • A24D3/045Tobacco smoke filters characterised by their shape or structure with smoke acceleration means, e.g. impact-filters
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04Tobacco smoke filters characterised by their shape or structure
    • A24D3/048Tobacco smoke filters characterised by their shape or structure containing additives

Definitions

  • the present invention relates to a cigarette filter which fully retains all the harmful substances of a cigarette without deteriorating the taste thereof.
  • the currently available cigarette filters are simple filtration elements, which are interposed between the main body of a cigarette and the smoker's mouth in order to retain tar and other harmful products from the combustion of the tobacco of the cigarette. This is achieved in a somehow inconvenient manner or under a delay in the passage of these products, which depends on the various blends in the cigarettes and cigarillos, without however an effective or integrated retention control.
  • a more effective control and a more effective protection of the smokers are achieved.
  • the present invention relates to a filter which consists of four regions, which aim at arresting the transport of the harmful substances of a cigarette, without affecting the taste thereof. It preserves the same elastic sense of the simple filters, thus it does not affect the acceptance by the user. Also, it exploits the laws of physics, and due to the centrifugal phenomena that take place in the filter it retains all the harmful substances.
  • the filter presented herein consists of four regions/zones and is made of a material suitable not only to filter effectively but also to give an elastic sense on the smoker's lips.
  • the first filtration zone (1), figure 1 consists of a case containing particulate activated carbon or fragrant, taste improving substances and is responsible for the first stage of filtration of the harmful substances, while in parallel it prevents any accidental removal of tobacco pieces, which would otherwise clog the spiral channels through which the combustion products pass.
  • the cigarette smoke passes from the inlet front (2) of the filtration zone (1) to the outlet front (3) and therefrom into the external spiral ring (4) which has a step that is large at the beginning and incrementally reduces.
  • This provides a configuration resembling an endless screw that guides the smoke to the chamber (5), figure 2a , which is formed by the spiral ring (4) itself, a paper wrap (6) and the cylindrical configuration of the terminal introduction part (7).
  • the spirals in the interior of the filter create cyclonic and centrifugal effects, which accelerate the passage of the smoke and guide it to the inner spiral channel (8), which again has a continuously reducing step, and ends to a chamber (9) for the retention of the harmful substances.
  • this is formed by the inner surface (10) of the outer spiral ring (4) and of the end (11), figure 2b , of the final filtration element (12).
  • the smoke reaches the outlet (13) of the final filtration element (12) after having been treated to the maximum possible degree, so that the major portion of the harmful substances is retained.
  • the provision of the two chambers (5), (9) and the change in the direction of the motion of the combustion gases contribute, due to inertia, to the accumulation and retention of the entrained smoke residues.
  • the paper wrap (6) at the beginning of the filter has less density, however subsequently its density and strength increase, so that it is impervious and contributes to the wrapping and the intended strength. It is apparent that the large distance that the products and substances of the smoke must cover in the filter, compared to that of the conventional filters, contribute to the more effective filtration, without reducing the smoke discharge speed.
  • both the outer spiral ring (4) and the inner spiral channel (8) have a layer of sticky material.
  • their almost dry state is converted to a sticky one and thus the harmful substances as well as the other combustion residues are better retained.
  • Another alternative embodiment of the invention relates to the use of the said filter in plastic, for example independent, cartridges so that it is used in hookahs, pipes or hand-rolled cigarettes.
  • the said filters may be disposable or may be used several times depending on their manufacture.

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

Abstract

The present invention relates to a cigarette filter which allows a more efficient retention of harmful substances. The filter consists of a filtration zone (1) with a case containing particulate activated carbon for the initial filtration, whereas subsequently two spiral channels and two respective chambers contribute to the retention of as many substances as possible. The outer spiral ring (4) as well as the inner spiral channel (8) have a continuously reducing step, so that a endless-screw configuration is created, while at the same time their inner surfaces consist of a sticky material for retaining smoke particles. Finally, before discharge, the smoke is passed through a filtration element (12). The filter may be employed independently in cartridges for use in pipes or hand-rolled cigarettes.

Description

  • The present invention relates to a cigarette filter which fully retains all the harmful substances of a cigarette without deteriorating the taste thereof.
  • The currently available cigarette filters are simple filtration elements, which are interposed between the main body of a cigarette and the smoker's mouth in order to retain tar and other harmful products from the combustion of the tobacco of the cigarette. This is achieved in a somehow inconvenient manner or under a delay in the passage of these products, which depends on the various blends in the cigarettes and cigarillos, without however an effective or integrated retention control. By the device proposed herein, and by exploiting laws of physics, a more effective control and a more effective protection of the smokers are achieved.
  • The present invention relates to a filter which consists of four regions, which aim at arresting the transport of the harmful substances of a cigarette, without affecting the taste thereof. It preserves the same elastic sense of the simple filters, thus it does not affect the acceptance by the user. Also, it exploits the laws of physics, and due to the centrifugal phenomena that take place in the filter it retains all the harmful substances.
  • All the above and further features, as well as advantages of the present invention will be apparent by the following detailed description. The invention is fully understood with reference to the accompanying figures, which depict an exemplary embodiment thereof.
    • Figure 1 shows a filter of the present invention with all its parts, while in parallel the course of smoke in the filter is shown.
    • Figure 2a shows in longitudinal section the filter as fully assembled, while figure 2b shows the filter before assembling, in order to show the construction and composition of the invention.
  • Referring now to these figures, an exemplary embodiment of the invention is described.
  • The filter presented herein consists of four regions/zones and is made of a material suitable not only to filter effectively but also to give an elastic sense on the smoker's lips. The first filtration zone (1), figure 1, consists of a case containing particulate activated carbon or fragrant, taste improving substances and is responsible for the first stage of filtration of the harmful substances, while in parallel it prevents any accidental removal of tobacco pieces, which would otherwise clog the spiral channels through which the combustion products pass. The cigarette smoke passes from the inlet front (2) of the filtration zone (1) to the outlet front (3) and therefrom into the external spiral ring (4) which has a step that is large at the beginning and incrementally reduces. This provides a configuration resembling an endless screw that guides the smoke to the chamber (5), figure 2a, which is formed by the spiral ring (4) itself, a paper wrap (6) and the cylindrical configuration of the terminal introduction part (7). The spirals in the interior of the filter create cyclonic and centrifugal effects, which accelerate the passage of the smoke and guide it to the inner spiral channel (8), which again has a continuously reducing step, and ends to a chamber (9) for the retention of the harmful substances. As it is apparent, this is formed by the inner surface (10) of the outer spiral ring (4) and of the end (11), figure 2b, of the final filtration element (12). The smoke reaches the outlet (13) of the final filtration element (12) after having been treated to the maximum possible degree, so that the major portion of the harmful substances is retained. The provision of the two chambers (5), (9) and the change in the direction of the motion of the combustion gases contribute, due to inertia, to the accumulation and retention of the entrained smoke residues. The paper wrap (6) at the beginning of the filter has less density, however subsequently its density and strength increase, so that it is impervious and contributes to the wrapping and the intended strength. It is apparent that the large distance that the products and substances of the smoke must cover in the filter, compared to that of the conventional filters, contribute to the more effective filtration, without reducing the smoke discharge speed.
  • In an alternative embodiment of the invention, both the outer spiral ring (4) and the inner spiral channel (8) have a layer of sticky material. When the warm smoke passes over their surface, their almost dry state is converted to a sticky one and thus the harmful substances as well as the other combustion residues are better retained.
  • Another alternative embodiment of the invention relates to the use of the said filter in plastic, for example independent, cartridges so that it is used in hookahs, pipes or hand-rolled cigarettes. The said filters may be disposable or may be used several times depending on their manufacture.
  • It should be noted that the description of the invention was made with reference to an exemplary, non-limiting embodiment. Any change or modification regarding the shape, size, dimensions, manufacture/assembly materials and components employed, application fields, as long as not constituting a new inventive step and not contributing to the known state of the art, are considered encompassed in the scope of the present invention.

Claims (4)

  1. Cigarette filter characterized in that it consists of a filtration zone (1), a case containing particulate activated carbon, followed by an outer spiral ring (4) having a continuously reducing step, then a chamber (5) and an inner spiral channel (8), which, via a harmful-substance retention chamber (9), ends to the final filtration element (12).
  2. Cigarette filter according to claim 1, characterized in that the zone (1) consists of fragrant substances for improving the taste in the user's mouth.
  3. Cigarette filter according to claim 1, characterized in that both the outer spiral ring (4) and the inner spiral channel (8) comprise a layer of sticky material which contributes to a more effective retention of the harmful substances of the smoke.
  4. Cigarette filter according to claim 1, characterized in that it can be used in disposable or multiple-use cartridges to be mounted in pipes, hookahs and hand-rolled cigarettes.
EP12386012A 2011-05-04 2012-04-25 Cigarette filter Withdrawn EP2520185A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR20110100266A GR1007749B (en) 2011-05-04 2011-05-04 Filter for cigarettes

Publications (1)

Publication Number Publication Date
EP2520185A1 true EP2520185A1 (en) 2012-11-07

Family

ID=46125363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12386012A Withdrawn EP2520185A1 (en) 2011-05-04 2012-04-25 Cigarette filter

Country Status (2)

Country Link
EP (1) EP2520185A1 (en)
GR (1) GR1007749B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013024265A3 (en) * 2011-08-12 2013-08-01 British-American Tobacco (Holdings) Limited A filter for a smoking article
WO2020245010A1 (en) * 2019-06-05 2020-12-10 Philip Morris Products S.A. Aerosol-generating article comprising an aerosol-cooling element with an elongated protrusion
RU2815858C2 (en) * 2019-06-05 2024-03-22 Филип Моррис Продактс С.А. Aerosol generating article comprising aerosol cooling element with elongated projection
WO2024183789A1 (en) * 2023-03-09 2024-09-12 北京温致科技有限公司 Filter element, filter tip and aerosol generating apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525345A (en) * 1969-02-03 1970-08-25 Walter Harris Tobacco smoke filter
US4135523A (en) * 1976-03-17 1979-01-23 British-American Tobacco Company Limited Tobacco-smoke filters
GB2431855A (en) * 2005-11-07 2007-05-09 Xiaolei Xiahou Cigarette filter including passage
WO2008068458A1 (en) * 2006-12-05 2008-06-12 British American Tobacco (Investments) Limited Tobacco smoke filter and methods of making the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525345A (en) * 1969-02-03 1970-08-25 Walter Harris Tobacco smoke filter
US4135523A (en) * 1976-03-17 1979-01-23 British-American Tobacco Company Limited Tobacco-smoke filters
GB2431855A (en) * 2005-11-07 2007-05-09 Xiaolei Xiahou Cigarette filter including passage
WO2008068458A1 (en) * 2006-12-05 2008-06-12 British American Tobacco (Investments) Limited Tobacco smoke filter and methods of making the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013024265A3 (en) * 2011-08-12 2013-08-01 British-American Tobacco (Holdings) Limited A filter for a smoking article
WO2020245010A1 (en) * 2019-06-05 2020-12-10 Philip Morris Products S.A. Aerosol-generating article comprising an aerosol-cooling element with an elongated protrusion
CN113811204A (en) * 2019-06-05 2021-12-17 菲利普莫里斯生产公司 Aerosol-generating article comprising an aerosol-cooling element having elongate protrusions
RU2815858C2 (en) * 2019-06-05 2024-03-22 Филип Моррис Продактс С.А. Aerosol generating article comprising aerosol cooling element with elongated projection
WO2024183789A1 (en) * 2023-03-09 2024-09-12 北京温致科技有限公司 Filter element, filter tip and aerosol generating apparatus

Also Published As

Publication number Publication date
GR1007749B (en) 2012-11-02

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