EP0146114A1 - 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
EP0146114A1
EP0146114A1 EP84115289A EP84115289A EP0146114A1 EP 0146114 A1 EP0146114 A1 EP 0146114A1 EP 84115289 A EP84115289 A EP 84115289A EP 84115289 A EP84115289 A EP 84115289A EP 0146114 A1 EP0146114 A1 EP 0146114A1
Authority
EP
European Patent Office
Prior art keywords
core
air
space
sleeve
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.)
Granted
Application number
EP84115289A
Other languages
German (de)
English (en)
Other versions
EP0146114B1 (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

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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 cigarette with a one-piece ventilated filter mouthpiece, in which, through perforations of a bypass air surrounding the substantially air-impermeable outer casing, and the smoke in axially parallel streams are conducted separately from one another to the mouth end of the filter mouthpiece and are only mixed in the mouth of the smoke, as it is further defined according to the preamble of skin requirements.
  • a cigarette with such a filter mouthpiece is known for example from DE-PS 16 57 261 and DE-AS 19 36 429;
  • This ventilation mouthpiece consists of a one - piece cylindrical plastic body, which together with the filter or cigarette end of is enclosed in 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 a ventilated filter mouthpiece are known, in which air and smoke are also conducted separately in parallel streams and are only mixed in the mouth of the smoker;
  • 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 invention has set itself the task of proposing a cigarette with a novel one-piece ventilated filter mouthpiece, in which on the one hand the generally desired ventilation, ie 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 auxiliary air and smoke occurs only in the mouth of the smoker, but auxiliary air and smoke are now to be guided in such a way that the main smoke flow is bundled and encased by the additional air flow in a quasi-laminar manner and is still fed separately to the mouth of the smoker and mixed in it . Furthermore, it should be possible for a given degree of additional air that, by appropriate dimensioning of the core or annular space, 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 should also the use of a less solidified filter material than previously 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 flowing 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 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.
  • the filter material which had to have a high packing density due to the later deformation, be it for attaching groove-shaped channels or when squeezing together in the transition area to the tobacco-side end, 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 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 with a circular 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 element 124a filling the coaxial core space is one A cross-section of a polygonal strand with a concavely drawn-in ring surface, 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)
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 true EP0146114A1 (fr) 1985-06-26
EP0146114B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0476969A1 (fr) * 1990-09-20 1992-03-25 Philip Morris Products Inc. Cigarette à filtre
GB2482961A (en) * 2010-08-16 2012-02-22 Allied Global Tobacco Ltd Non-filter cigarette
WO2017198995A1 (fr) * 2016-05-19 2017-11-23 British American Tobacco (Investments) Limited Bâtonnet-filtre ayant un revêtement ondulé, appareil et procédé de fabrication
WO2017198994A1 (fr) * 2016-05-19 2017-11-23 British American Tobacco (Investments) Limited Bâtonnet-filtre à revêtement ondulé et appareil et procédé de fabrication du bâtonnet-filtre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2138974C1 (ru) * 1999-03-12 1999-10-10 Погосян Сейран Амаякович Курительное изделие

Citations (3)

* 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
DE1936429A1 (de) * 1968-07-24 1970-05-21 Philip Morris Inc Verfahren zur Herstellung eines zusammengesetzten Gegenstandes in Form einer von einer rohrfoermigen Huelle eingeschlossenen Fasermaterialmasse und nach diesem Verfahren hergestellter Gegenstand
US3789855A (en) * 1971-06-22 1974-02-05 Liggett & Myers Inc High flavor impact, low smoke yield cigarette mouthpiece

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490461A (en) * 1967-04-20 1970-01-20 Philip Morris Inc Cigarette ventilation
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

Patent Citations (3)

* 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
DE1936429A1 (de) * 1968-07-24 1970-05-21 Philip Morris Inc Verfahren zur Herstellung eines zusammengesetzten Gegenstandes in Form einer von einer rohrfoermigen Huelle eingeschlossenen Fasermaterialmasse und nach diesem Verfahren hergestellter Gegenstand
US3789855A (en) * 1971-06-22 1974-02-05 Liggett & Myers Inc High flavor impact, low smoke yield cigarette mouthpiece

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0476969A1 (fr) * 1990-09-20 1992-03-25 Philip Morris Products Inc. Cigarette à filtre
GB2482961A (en) * 2010-08-16 2012-02-22 Allied Global Tobacco Ltd Non-filter cigarette
WO2017198995A1 (fr) * 2016-05-19 2017-11-23 British American Tobacco (Investments) Limited Bâtonnet-filtre ayant un revêtement ondulé, appareil et procédé de fabrication
WO2017198994A1 (fr) * 2016-05-19 2017-11-23 British American Tobacco (Investments) Limited Bâtonnet-filtre à revêtement ondulé et appareil et procédé de fabrication du bâtonnet-filtre

Also Published As

Publication number Publication date
DE3345001A1 (de) 1985-06-20
EP0146114B1 (fr) 1988-05-11
DE3345001C2 (de) 1986-06-12

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