EP0146114B1 - Cigarette avec un embout filtrant ventilé en une pièce - Google Patents

Cigarette avec un embout filtrant ventilé en une pièce Download PDF

Info

Publication number
EP0146114B1
EP0146114B1 EP84115289A EP84115289A EP0146114B1 EP 0146114 B1 EP0146114 B1 EP 0146114B1 EP 84115289 A EP84115289 A EP 84115289A EP 84115289 A EP84115289 A EP 84115289A EP 0146114 B1 EP0146114 B1 EP 0146114B1
Authority
EP
European Patent Office
Prior art keywords
core
air
casing
cigarette according
cigarette
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.)
Expired
Application number
EP84115289A
Other languages
German (de)
English (en)
Other versions
EP0146114A1 (fr
Inventor
Henning Dr. Seidel
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 EP0146114A1 publication Critical patent/EP0146114A1/fr
Application granted granted Critical
Publication of EP0146114B1 publication Critical patent/EP0146114B1/fr
Expired legal-status Critical Current

Links

Images

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 cigarette with a one-piece ventilated filter mouthpiece, in which perforations of a substantially air-impermeable outer casing surrounding the outer mouthpiece and the smoke are conducted in axially parallel streams separately from one another to the mouth-side end of the filter mouthpiece and are only mixed in the mouth of the smoker. as further defined according to the preamble of the main claim.
  • a cigarette with such a filter mouthpiece is known for example from DE-C-16 57 261 and DE-B-1936429;
  • This ventilation mouthpiece consists of a one-piece cylindrical plastic body which, together with the filter or cigarette end, is enclosed by an outer casing which has air inlet openings for air supply ducts which are provided on the outer region of the cylindrical body in the longitudinal direction.
  • cigarettes with ventilated filter mouthpiece are known, in which the supply air and smoke are also conducted separately in parallel streams and are only mixed in the smoker's mouth;
  • these filters have a tubular sheath or air-impermeable layer made of a thermoplastic such as polyethylene, inside which there is filter material, while on the outer surface of the sheath there are concavely shaped grooves extending in the longitudinal direction;
  • there is also a wrapping film which surrounds the outer surface of the tubular casing and connects the latter to the tobacco rod, the wrapping film having perforations in the region of the channels formed by the concave ribs which supply the additional air.
  • the air-impermeable outer shell is pressed into the grooves leading to the by-air and partially or completely closes it when smoking due to the wet lip pressure of the smoker or when holding the cigarette with the teeth by the bite pressure.
  • the tobacco smoke contains more condensate and nicotine than with a determination method measured according to DIN 10240 and 10242 with a smoking machine with dry rubber lips, which can lead to a deception of the smoker.
  • filter mouthpieces of the known type can only be produced in a complex manner and in many cases not continuously.
  • the object of the invention is to propose a cigarette with a novel one-piece ventilated filter mouthpiece, in which the generally desired ventilation, i.e. the supply of additional air is guaranteed even when smoking with wet lips or when applying bite pressure, and on the other hand the mixing of additional air and smoke takes place only in the smoker's mouth, but now additional air and smoke should be guided in such a way that the main flow of smoke is bundled and encased by the air stream in a quasi-laminar manner and still fed separately to the smoker's mouth and mixed therein. Furthermore, it should be possible with a given degree of additional air that by appropriate dimensioning of the core or annulus uniform flow velocities of air and smoke flow can be achieved. Ultimately, according to the invention, a continuous or economical production of the filter elements is to be made possible, and finally the use of a less solidified filter material than previously customary should also be possible.
  • the inventive design of the filter mouthpiece with core sleeve and outer sleeve and with a corresponding cross-sectional ratio of the annular space and the core space makes it possible that the bypass air stream coming into the mouth from the coaxial annular space allows the smoke flow guided in a stranded manner from the core space to pass into the smoker's mouth in a quasi-encased manner.
  • the core stream which is much more densely guided, begins to mix more clearly in the smoker's mouth despite the beginning of mixing, as a result of the bundling of the core stream caused in this way.
  • the one-piece design of the core sleeve, outer sleeve and spacers allows an extremely economical and continuous production of the filter and gives the filter mouthpiece the sufficient strength, so that the annular space instead of the previously known small air ducts is now provided neither by wet lips nor by biting pressure with regard to the supply of Air can be restricted or closed.
  • the condensate and nicotine values measured according to the DIN standard with a smoking machine with rubber lips also correspond to the values actually occurring in the smoker's mouth.
  • the stability of the filter formed from the outer sleeve and the core sleeve results in the mutually stabilizing partial areas of high mechanical resilience, which not only has an advantageous effect on the above-mentioned unimpeded supply air, but also makes it possible that no filter material of high packing density has to be used. While the filter material used to be
  • any, also loose and more flexible filter material can now be used.
  • acetylated cellulose which has been hardened with triacetin, other filter materials without hardness or those with smaller amounts of hardeners can now also be used.
  • the tobacco section 112 is connected with a tobacco rod 114 and a paper sleeve 110 in alignment with the filter mouthpiece 118.
  • the mouthpiece 118 is formed by an outer sleeve 120 with perforation openings 122 and one inside the outer sleeve coaxial with this core sleeve 126, so that an annular space 130 is formed between the core sleeve 126 and the outer sleeve 120.
  • Outer sleeve 120 and core sleeve 126 are made of an air-impermeable material.
  • the core space 124 can be completely filled with filter material or, not shown here, only partially or not at all.
  • Tobacco section 112 and filter mouthpiece 118 are connected to one another by a wrapping sheet 116.
  • perforations 117 are provided in the wrapping sheet 116, which enable air to be supplied via the perforations 122.
  • the core space 124 designed as a filter element can be a strand of conventional filter material that is circular in cross section. Since the core sleeve 126 is connected to the outer sleeve 120 via spacers 134 and has sufficient stability due to the choice of material, it is not necessary to additionally solidify the filter material.
  • the spacers can be point-shaped or rod-shaped or even flat; they can be arranged either axially parallel or helically on the air-impermeable core sleeve 126 in any manner and connected to the outer sleeve 120.
  • the filter material 124a filling the coaxial core space is a strand with a polygonal cross-section and concavely drawn-in ring surfaces, the corner regions 134a of which are connected to the outer sleeve 126 as spacers.
  • the wrapping sheet 116 is not shown for simplicity.
  • the filter element consisting of the outer sleeve and the core sleeve can be produced in one operation by extruding an extrudable plastic material with simultaneous introduction of the strand-shaped filter material.
  • the end face 128 of the annular space 130 is also impermeable to air; it can preferably be adapted or molded onto the core sleeve 126 by squeezing or molding the outer sleeve 120, which acts as an air-impermeable layer, which can be carried out without difficulty shortly after extrusion because of the still soft material.
  • the perforations can be made in the outer sleeve 120 and in the wrapping sheet 116 in any manner, for example mechanically or by means of a laser.
  • the filter material in the annular space can be any material, preferably cellulose acetate solidified with triacetin, but because of the mechanical strength or elasticity of the filter element consisting of core sleeve and outer sleeve, other, less strong filter materials can also be used with advantage.
  • FIG. 4 shows in section the molding of the outer sleeve on the tobacco-side end area of the filter part, the molding taking place both in the area of the web-shaped spacers 134 and at the end of the core sleeve 126.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Claims (9)

1. Cigarette à embout filtrant (118) ventilé, en une pièce, dans laquelle l'air de ventilation entrant par des perforations d'une enveloppe extérieure en principe impénétrable à l'air, entourant l'embout, et la fumée, sont conduits en courants d'axes parallèles, séparément l'un de l'autre, jusqu'à l'extrémité côté bouche de l'embout filtrant et ne sont mélangés que dans la bouche du fumeur, où l'embout filtrant comporte un espace formant noyau (124), coaxial, rempli de matière filtrante et, séparé de celui-ci par une couche impénétrable à l'air, un conduit d'amenée annulaire coaxial de l'air de ventilation, qui est fermé à l'extrémité, du côté du tabac, et qui est en communication, pour l'écoulement du courant, avec les perforations de l'enveloppe extérieure, tandis que l'espace formant noyau est en communication, pour l'écoulement, avec la région, conduisant la fumée, de la cigarette, caractérisée en ce que:
a) l'amenée d'air de ventilation se fait par un espace annulaire (130) qui n'est interrompu que par des distanceurs (134, 134a), qui est formé par une enveloppe de noyau (126) comme couche impénétrable à l'air entourant l'espace de noyau (124), et par une enveloppe extérieure (120) pourvue d'ouvertures par perforation (122), laquelle s'applique de manière étanche dans la région d'extrémité, côté du tabac, de l'espace annulaire (130), contre l'enveloppe de noyau (126), ou est formé sur celle-ci;
b) l'enveloppe de noyau (126), l'enveloppe extérieure (120) et les distanceurs (134) sont constitués de matière synthétique faite d'une pièce, de préférence extrudée; et
c) le rapport de la surface de section de l'espace annulaire (130) à l'espace de noyau (124) est de 0,6:1 à 1:1.
2. Cigarette suivant la revendication 1, caractérisée en ce que le rapport des sections transversales de l'espace annulaire (130) à l'espace de noyau (124) est de 0,8:1.
3. Cigarette suivant les revendications 1 et 2, caractérisée en ce que les épaisseurs de paroi de l'enveloppe (126) formant noyau et de l'enveloppe extérieure (120) sont chaque fois de 0,1 à 0,5 mm.
4. Cigarette suivant les revendications 1 à 3, caractérisée en ce que l'espace de noyau (124) n'est que partiellement rempli de matière filtrante et forme, soit à l'extrémité côté tabac, une chambre, soit à l'extrémité côté de la bouche, un embout creux.
5. Cigarette suivant l'une des revendications 1 à 4, caractérisée en ce que l'enveloppe de noyau (126) présente une section transversale de forme circulaire.
6. Cigarette suivant l'une des revendications 1 à 4, caractérisée en ce que l'enveloppe de noyau (126') a une section transversale polygonale, avec des surfaces limites préférences concaves, tirées vers l'intérieur.
7. Cigarette suivant la revendication 6, caractérisée en ce que les bords de l'enveloppe de noyau (126') sont conformés en distanceurs (134a) et sont reliés à l'enveloppe extérieure (120).
8. Cigarette suivant l'une des revendications 1 à 7, caractérisée en ce que les distanceurs (134, 134a) ne sont reliés que localement à l'enveloppe extérieure (120).
9. Cigarette suivant l'une des revendications 1 à 8, caractérisée en ce que l'enveloppe extérieure (120) est reliée, au moyen d'une feuille (116) formant enveloppe, au tronçon occupé par le tabac (112), qui présente, au moins dans la région des ouvertures par perforation (122) de l'enveloppe extérieure (120), des perforations (117), ou qui est faite d'une matière pénétrable par l'air.
EP84115289A 1983-12-13 1984-12-12 Cigarette avec un embout filtrant ventilé en une pièce Expired EP0146114B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3345001A DE3345001C2 (de) 1983-12-13 1983-12-13 Zigarette mit ventiliertem Hohlmundstück
DE3345001 1983-12-13

Publications (2)

Publication Number Publication Date
EP0146114A1 EP0146114A1 (fr) 1985-06-26
EP0146114B1 true EP0146114B1 (fr) 1988-05-11

Family

ID=6216791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115289A Expired EP0146114B1 (fr) 1983-12-13 1984-12-12 Cigarette avec un embout filtrant ventilé en une pièce

Country Status (2)

Country Link
EP (1) EP0146114B1 (fr)
DE (1) DE3345001C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5178166A (en) * 1990-09-20 1993-01-12 Philip Morris Incorporated Filter cigarette
RU2138974C1 (ru) * 1999-03-12 1999-10-10 Погосян Сейран Амаякович Курительное изделие
GB2482961B (en) * 2010-08-16 2015-10-07 Allied Global Tobacco Ltd Non-filter Cigarette
GB201608815D0 (en) * 2016-05-19 2016-07-06 British American Tobacco Co Filter rod and apparatus and method
GB201608814D0 (en) * 2016-05-19 2016-07-06 British American Tobacco Co Filter rod and apparatus and method for filter rod manufacture

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396733A (en) * 1966-03-23 1968-08-13 Lorillard Co P Cigarette tip
US3490461A (en) * 1967-04-20 1970-01-20 Philip Morris Inc Cigarette ventilation
US3579623A (en) * 1968-07-24 1971-05-18 Philip Morris Inc Forming filled continuous plastic rod such as plastic cigarette filter rod filled with a tow of cellulose acetate
US3789855A (en) * 1971-06-22 1974-02-05 Liggett & Myers Inc High flavor impact, low smoke yield cigarette mouthpiece
US4386618A (en) * 1981-06-29 1983-06-07 Brown & Williamson Tobacco Corporation Cigarette filter
DE3205742C2 (de) * 1982-02-18 1986-07-17 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Cigarettenfilter

Also Published As

Publication number Publication date
DE3345001C2 (de) 1986-06-12
EP0146114A1 (fr) 1985-06-26
DE3345001A1 (de) 1985-06-20

Similar Documents

Publication Publication Date Title
DE3121170C2 (de) Tabakrauchfilter
DE3216667C2 (fr)
DE3150087C2 (fr)
DE1657261B1 (de) Belueftungsmundstueck
DE3011959A1 (de) Zigarettenfilter
DE3522562C2 (fr)
DE3311902C3 (de) Filtermundstück für Zigaretten
AT394928B (de) Ventiliertes zigarettenfilter und filterzigarette
AT390718B (de) Verbesserter zigarettenfilter
DE2343327C2 (de) Tabakfilterelement sowie Verfahren und Vorrichtung zur Herstellung eines Tabakfilterelements
DE4444157C1 (de) Segment-Filtercigarette
DE3225091C2 (de) Rauchfilterelement
DE3312706A1 (de) Zigarettenfilter
DE3304764C2 (fr)
DE3601959C2 (fr)
DE3225071C2 (de) Ventiliertes Zigarettenfilter
EP0146114B1 (fr) Cigarette avec un embout filtrant ventilé en une pièce
AT393067B (de) Zigarettenfilter
DE3225073A1 (de) Tabakrauch-filter
DE3312548A1 (de) Tabakrauchfilter und verfahren zu seiner herstellung
DE3225092A1 (de) Tabakrauchfilter
DE3445354C2 (fr)
DE3225068C2 (fr)
DE4107025C2 (de) System zur Selbstverfertigung von Filtercigaretten
EP0615699B2 (fr) Tube de cigarette en papier

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: 19850727

17Q First examination report despatched

Effective date: 19860911

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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

ITF It: translation for a ep patent filed

Owner name: ING. A. GIAMBROCONO & C. S.R.L.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19991126

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19991201

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19991203

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19991213

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19991227

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001212

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

BERE Be: lapsed

Owner name: H.F. & PH.F. REEMTSMA G.M.B.H. & CO.

Effective date: 20001231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20001212

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010701