EP0151732A1 - Filtre à cigarette ventilé avec un filtre à rainures - Google Patents

Filtre à cigarette ventilé avec un filtre à rainures Download PDF

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Publication number
EP0151732A1
EP0151732A1 EP84114971A EP84114971A EP0151732A1 EP 0151732 A1 EP0151732 A1 EP 0151732A1 EP 84114971 A EP84114971 A EP 84114971A EP 84114971 A EP84114971 A EP 84114971A EP 0151732 A1 EP0151732 A1 EP 0151732A1
Authority
EP
European Patent Office
Prior art keywords
filter
groove
cigarette
air
tobacco
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
EP84114971A
Other languages
German (de)
English (en)
Inventor
Paul Rieth
J.-Detlev Frhr. von Dr. Uexküll
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.)
HF and PhF Reemtsma GmbH and Co
Original Assignee
HF and PhF Reemtsma GmbH and Co
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 HF and PhF Reemtsma GmbH and Co filed Critical HF and PhF Reemtsma GmbH and Co
Publication of EP0151732A1 publication Critical patent/EP0151732A1/fr
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 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
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution

Definitions

  • the invention relates to a ventilated filter cigarette with a groove filter according to the preamble of the main claim.
  • Such ventilated cigarettes are e.g. according to DE-PS 16 57 261 known. They have a fully cylindrical filter body with an air-impermeable sleeve surrounding it, on the circumferential surface of which a plurality of groove-like channels which are essentially axially extending and open both on the mouth side and on the tobacco side are arranged at a distance from one another; in these ventilated filter cigarettes, the filter body or the groove filter and the filter-side end of the cigarette are surrounded by an air-impermeable wrapping sheet which is air-permeable at least in the region of the groove-like channels.
  • the air permeability is usually brought about by mechanical or electrostatic perforation of an air-impermeable wrapping sheet.
  • the amount of additional air in such ventilated filter cigarettes depends on several factors, such as the air permeability of the wrapping sheet, ie the number and size of the perforations and also the size and number of channels in the groove filter, the filter resistance and what happens when the cigarette is burned off changing series resistance of the tobacco rod. By carefully coordinating these parameters, the desired additional air range can be maintained. If you want to increase or decrease the proportion of the additional air, groove filters with other, for example larger grooves and / or with wrapping sheets with different types of perforation must be used. This makes the changeover in the manufacture of cigarettes considerably more difficult.
  • the present invention has set itself the task of eliminating these disadvantages and in particular to enable a quick changeover in the production of low-ventilated or more ventilated filter cigarettes.
  • the degree of ventilation can be influenced in a very simple manner.
  • the further cylindrical filter element can be designed as a hollow cylinder, the wall thickness of which corresponds to the groove depth of the groove filter.
  • the groove filter can thus be of a uniform and unchanged design;
  • the wrapping sheet with the perforated areas can always be used in the same quality, with only a different, more or less compressed further cylindrical filter part now being used or exchanged between the groove filter and the tobacco rod to change the degree of additional air.
  • the groove filter and the further cylindrical filter element can optionally be combined to form a filter unit by an air-permeable intermediate sheet.
  • the number of grooves in the groove filter can be chosen arbitrarily and, for example, only be 3 to 5 grooves; but it is also possible to provide about 10 to 14 grooves according to the groove filter described in DE-PS 16 57 261.
  • the air-impermeable sleeve of the groove body is preferably a thin layer of polyethylene; but it can also be achieved by gluing the outer wall of the filter material.
  • a tobacco section 12 with a tobacco rod 14 and a paper tube 16 is provided for this.
  • a further cylindrical filter element 30 is provided between the groove filter 18 and the tobacco section 12, which is likewise held by the wrapping sheet 26 and, together with the groove filter 18, is connected to the tobacco rod surrounded by a paper tube 16.
  • the further cylindrical filter element 30 can be gripped by the paper tube surrounding the tobacco rod.
  • the further cylindrical filter element 30 has a compressed region 30a in the region of the groove-like channels 24 open on the tobacco side and a less compressed region in the core region 30b.
  • the compression of cylindrical filter elements in the outer area is known per se, it is carried out by mechanical influence during manufacture and / or by slight gluing of the individual fibers of the filter material.
  • the filter element 30 ' is designed as a hollow cylinder.
  • the inner surface of this hollow cylinder can optionally be sealed with an air-impermeable layer or inner sleeve in order to completely prevent smoke from passing into the ventilation channels.
  • the ring part 30'a forming a greater resistance consists of any filter material, while the inner region 30'b is left hollow or can also be filled with a suitable filter material.
  • the wall thickness of this cylinder ring or hollow cylinder should be at least as large as the groove depth of the groove filter. In extreme cases, the tensile resistance of the ring part 30 or the denser region 30a can be greater than that of the filter 20.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP84114971A 1983-12-13 1984-12-08 Filtre à cigarette ventilé avec un filtre à rainures Ceased EP0151732A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3345000A DE3345000C2 (de) 1983-12-13 1983-12-13 Ventilierte Filterzigarette mit Rillenfilter
DE3345000 1983-12-13

Publications (1)

Publication Number Publication Date
EP0151732A1 true EP0151732A1 (fr) 1985-08-21

Family

ID=6216790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114971A Ceased EP0151732A1 (fr) 1983-12-13 1984-12-08 Filtre à cigarette ventilé avec un filtre à rainures

Country Status (2)

Country Link
EP (1) EP0151732A1 (fr)
DE (1) DE3345000C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203324A (en) * 1987-04-16 1988-10-19 Cigarette Components Ltd Ventilated cigarette filter
EP0476969A1 (fr) * 1990-09-20 1992-03-25 Philip Morris Products Inc. Cigarette à filtre
WO2014207479A1 (fr) * 2013-06-27 2014-12-31 British American Tobacco (Investments) Limited Procédé et appareil de fabrication d'un filtre destiné à un article à fumer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1657261B1 (de) * 1967-04-20 1972-02-03 Philip Morris Inc Belueftungsmundstueck
DE2558004A1 (de) * 1975-10-30 1977-05-12 Liggett & Myers Inc Zigarettenfilter, verfahren und vorrichtung zu seiner herstellung
FR2360269A1 (fr) * 1976-08-02 1978-03-03 Wiggins Teape Ltd Materiaux fibreux moules perfectionnes
GB2098051A (en) * 1981-05-07 1982-11-17 Filtrona Ltd Tobacco smoke filter and method and apparatus for making same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55148080A (en) 1979-05-07 1980-11-18 Mitsubishi Rayon Co Filter plug
DE3048905A1 (de) * 1980-12-23 1982-07-22 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Filter fuer cigaretten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1657261B1 (de) * 1967-04-20 1972-02-03 Philip Morris Inc Belueftungsmundstueck
DE2558004A1 (de) * 1975-10-30 1977-05-12 Liggett & Myers Inc Zigarettenfilter, verfahren und vorrichtung zu seiner herstellung
FR2360269A1 (fr) * 1976-08-02 1978-03-03 Wiggins Teape Ltd Materiaux fibreux moules perfectionnes
GB2098051A (en) * 1981-05-07 1982-11-17 Filtrona Ltd Tobacco smoke filter and method and apparatus for making same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203324A (en) * 1987-04-16 1988-10-19 Cigarette Components Ltd Ventilated cigarette filter
GB2203324B (en) * 1987-04-16 1991-05-29 Cigarette Components Ltd Ventilated cigarette filter
EP0476969A1 (fr) * 1990-09-20 1992-03-25 Philip Morris Products Inc. Cigarette à filtre
WO2014207479A1 (fr) * 2013-06-27 2014-12-31 British American Tobacco (Investments) Limited Procédé et appareil de fabrication d'un filtre destiné à un article à fumer

Also Published As

Publication number Publication date
DE3345000C2 (de) 1985-10-31
DE3345000A1 (de) 1985-06-20

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH GB IT LI LU NL

17P Request for examination filed

Effective date: 19851126

17Q First examination report despatched

Effective date: 19870120

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19870927

RIN1 Information on inventor provided before grant (corrected)

Inventor name: UEXKUELL, J.-DETLEV FRHR. VON, DR.

Inventor name: RIETH, PAUL