EP0167863B1 - Cigarette filter with variable ventilation - Google Patents

Cigarette filter with variable ventilation Download PDF

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Publication number
EP0167863B1
EP0167863B1 EP85107234A EP85107234A EP0167863B1 EP 0167863 B1 EP0167863 B1 EP 0167863B1 EP 85107234 A EP85107234 A EP 85107234A EP 85107234 A EP85107234 A EP 85107234A EP 0167863 B1 EP0167863 B1 EP 0167863B1
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EP
European Patent Office
Prior art keywords
wrapping sheet
filter
sleeve
cigarette according
extended
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
EP85107234A
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German (de)
French (fr)
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EP0167863A1 (en
Inventor
Henning Dr. Seidel
Wolfgang Wildenau
Joachim Mantke
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.)
Reemtsma Cigarettenfabriken GmbH
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
Priority claimed from DE3422776A external-priority patent/DE3422776C1/en
Priority claimed from DE19853516841 external-priority patent/DE3516841A1/en
Application filed by HF and PhF Reemtsma GmbH and Co filed Critical HF and PhF Reemtsma GmbH and Co
Priority to AT85107234T priority Critical patent/ATE31601T1/en
Publication of EP0167863A1 publication Critical patent/EP0167863A1/en
Application granted granted Critical
Publication of EP0167863B1 publication Critical patent/EP0167863B1/en
Expired legal-status Critical Current

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    • 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
    • A24D3/041Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter

Definitions

  • the invention relates to a variably ventilated filter cigarette with a groove filter according to the preamble of the main claim.
  • Such filter cigarettes are known according to DE-OS 3011 959 and cause a strict separation of smoke flow and ventilation air and a mixture of these only in the smoker's mouth.
  • the proportion of ventilation or auxiliary air in such ventilated filter cigarettes depends on several factors, such as the air permeability of the wrapping sheet, i.e. on the number and size of the perforations, and also on the size and number of channels in the groove filter, the filter resistance and the series resistance of the tobacco rod which changes when the cigarette is burned off.
  • the desired air intake range can be achieved by e.g. To increase the proportion of the additional air, larger grooves are provided in the groove filter and the wrapping sheets are provided with a correspondingly more permeable perforation. However, such changes in the degree of ventilation are cumbersome and make cigarette manufacture considerably more difficult.
  • a filter cigarette is already known from US Pat. No. 3,390,684, in which the ventilation air flow can be regulated either by covering a ventilation opening by means of a finger or by pushing on a sleeve.
  • the inadequate variability of the supply of the ventilation air flow and, on the other hand, the deviation of the external appearance compared to conventional filter cigarettes is disadvantageous.
  • US Pat. No. 3,376,874 rotatably arranged pot-like sleeves for cigarette filters with which the smoker can influence the filter effect depending on the degree of rotation.
  • These adjustable filters with a pot-like sleeve can only be produced in a complicated manner and also change the habitual habit of a conventional filter cigarette. All these known filters also have the disadvantage that they have no guidance of the ventilation air flow that is strictly separate from the smoke flow.
  • the invention has set itself the task of developing a variably ventilated filter cigarette of the type described above with several ventilation channels separated from the smoke flow, which depending on the current smoking habits of the consumer himself can be reproducibly adjusted to a greater or lesser degree of ventilation without changing the aroma quality and which does not differ in terms of its appearance from conventional filter cigarettes in terms of its shell area and can ultimately be produced in a simple and conventional manner.
  • a ventilated filter cigarette with a groove filter which consists of 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, open on the mouth side and closed on the tobacco side are arranged at a distance from one another, and in which the filter body and the filter-side end of the tobacco section are surrounded by a wrapping sheet which is permeable to air at least in the region of the groove-like channels and which is characterized by a sleeve provided after the mouth-side end of the groove filter, which is rotatable in the over the groove filter
  • an elongated wrapping sheet is arranged and has a pot-like design and has a bottom surface which lies against the end face of the groove filter and has a central opening and openings or recesses in the edge area, the Openings or recesses in the edge area with the outlet openings of the groove-like channels can be
  • the filter cigarette according to the invention is preferably designed in such a way that the pot-like sleeve is arranged in the extended wrapping sheet by means of an annular circumferential groove which lies on the outer surface of the pot-like sleeve and an annular spring which engages in the groove and which is arranged on the inner surface of the elongated wrapping sheet Turning engagement is held.
  • the variably ventilatable filter cigarette can be designed such that the interior of the pot-like sleeve is partially or completely filled with filter material.
  • This additional version with filter material can be done with a simple filter plug, but also with a grooved filter.
  • a simple filter plug but also with a grooved filter.
  • this can be influenced in its qualitative effect if the main smoke flow is allowed to flow through the filter plug in the pot-like sleeve, be it by twisting the sleeve with which the alignment of the channels is prevented and / or by a deliberate permeability for the supply air flow from the channels of the grooved filter plug located in the sleeve into this in order to achieve bundling and mixing of the supply air and main smoke stream in this filter.
  • the rotatable sleeve at the mouth end can be rotated into the corresponding position, for example by inserting a pin or with the little finger.
  • this sleeve-like extension can be gripped much more easily with the fingers from the outside in order to turn the pot-like sleeve into the desired position, and that the outer habit of the cigarette is not changed either, since practically the outer diameter of the sleeve-like extension only by a small amount, namely by the thickness of the extended wrapping sheet, is smaller.
  • this slight difference in the outer diameter can also be compensated for by the fact that the sleeve-like extension in the region no longer covered by the extended wrapping sheet has the same outer diameter as the groove filter surrounded by the wrapping sheet when it emerges from the elongated wrapping sheet and escapes with it.
  • the sleeve-like extension regardless of whether it has a cylindrical ring of the same diameter or one with a cranked-off area in which the extended area is no longer covered, that is to say the protruding area is covered with a further envelope sheet.
  • this further wrapping sheet which is applied to the protruding part of the pot-like sleeve or to the sleeve-like extension, can be connected to the elongated wrapping sheet via a predetermined breaking point.
  • This embodiment not only has the advantage that the wrapping sheet in the area of the groove filter and the elongated wrapping sheet in the area of the pot-like sleeve and also the further wrapping sheet form a uniform, continuous surface, but also that the manufacture of such a filter cigarette is considerably simplified since only a single wrapping sheet with predetermined breaking point around the groove filter, the pot-like sleeve and the sleeve-like extension can be applied in one operation.
  • the consumer only needs to blow open the predetermined breaking point in the area of the sleeve-like extension in order to set the desired ventilation effect by turning.
  • blocking means are provided on the elongated wrapping sheet and on the rotatable sleeve which only allow limited movement of the rotatable sleeve from a position in which allow the openings or the recesses in the edge region of the bottom surface with the outlet openings of the groove-like channels in the passage position in a blocking position.
  • the blocking means preferably consist of a partially annular projection or a lug, which engage in a partially annular groove, wherein a plurality of lugs can also be arranged at a distance from one another, which engage in corresponding partially annular grooves.
  • markings can be provided on the outer surface of the sleeve-like extension or on the further wrapping sheet covering it and on the outer surface of the elongated wrapping sheet, indicating the complete passage position and / or blocking position of the ventilation air.
  • the groove filter 18 consists of a cylindrical filter body 20 with an air-impermeable sleeve 22, in the circumferential surface of which groove-like channels 24 are embedded. This groove filter 18 is surrounded by a wrapping sheet 26, in which perforations 28 are provided in the region of the channels. The channels are open towards the mouth end and closed towards the tobacco end.
  • the auxiliary air flows through the perforations 28 and the channels 24 and, separate from the smoke flowing through the filter core 20 of the groove filter, passes through the outlet openings 25 (FIG. 1 a) of the groove-like channels 24 into the smoker's mouth.
  • a pot-like sleeve 30 is arranged, which is rotatably held by an extended wrapping sheet 26 '.
  • the pot-like sleeve has an annular circumferential groove 40, into which an annular circumferential projection 38 engages, which is provided on the inner surface of the elongated wrapping sheet 26 '.
  • the bottom surface 32 of the cup-like sleeve 30 has various openings, namely a central opening 34 in the area of the end face 21 of the groove filter and further openings 36 in the edge area of the bottom surface 32, which are aligned with the outlet openings 25 ( Fig. 1a) of the groove-like channels 24 are.
  • the openings 36 can either be designed as separate openings (FIG. 3a) or as cutouts, as shown in FIG. 3b; here the recesses 37 located in the edge area merge into the central opening.
  • the openings 36 located in the edge region of the bottom surface 32 are in register with the outlet openings 25 of the groove-like channels 24, so that the additional air can flow in through the groove-like channels 24 unhindered into the pot-like sleeve 30 and there can mix with the already filtered smoke which enters through the filter body 20 and the central opening 34 in the bottom 32 of the pot-like sleeve into the interior 42 of this sleeve.
  • This interior 42 of the pot-like sleeve can optionally also include additional filter material either partially e.g. included as a filter ring 44 (Fig. 2) or completely.
  • the pot-like sleeve 30 is extended on the mouth side via the extended wrapping sheet 26 'and forms a sleeve-like extension 50 which extends beyond the wrapping sheet 26'.
  • This configuration makes it possible to lightly grip the protruding part with a finger sleeve-like extension to set the desired ventilation.
  • the sleeve-like extension 50 is not in a preferred embodiment according to FIG more of the area covered by the elongated sheathing sheet 26 'is slightly expanded after an offset 52 when exiting the elongated sheathing sheet 26', the part 54 of the extending sleeve-like extension 50 having more or less the same outside diameter as the groove filter 18 surrounded by the sheathing sheet 26 and aligned with this more.
  • outside diameter of these two parts can be the same or differ by a small proportion.
  • the sleeve-like extension 50 is covered with a further wrapping sheet 56 in the area no longer covered by the elongated wrapping sheet 26 ′, that is to say in the projecting area 54.
  • the embodiment can be provided both with a cranked and with a continuous sleeve-like extension part 50 or 54.
  • the elongated wrapping sheet 26 'and the additional further wrapping sheet 56 these parts can be produced from a uniform material and a connection between the wrapping sheet extension and the wrapping sheet 56' can be established by a predetermined breaking point, such as it is shown in Fig. 7.
  • This form of training not only has the advantage of a better optical habit, but also results in a simpler and better production, in which all the areas forming the wrapping sheet, namely the actual wrapping sheet 26, the elongated wrapping sheet 26 'and the further wrapping sheet 56 or 56' in can be attached to the filter cigarette in one operation.
  • the predetermined breaking point 58 is blown up and a corresponding rotary movement is made possible by a simple rotary movement in the outer region of the further wrapping sheet 56 ′, that is to say at the outer end of the mouthpiece.
  • blocking means are provided which allow only a limited movement of the rotatable sleeve 30; from a point in which the openings or recesses 36 of the bottom surface 32 with the outlet openings 25 of the groove-like channels lie in the passage position to a further complete blocking position in which - as shown in FIG. 1 - no secondary air or auxiliary air occurs at all.
  • these blocking means can consist of a partially ring-shaped projection or a nose-shaped projection 60. This projection engages in a corresponding partially annular groove 62.
  • a plurality of lugs 60 are preferably arranged at a distance from one another on the inner surface of the elongated wrapping sheet 26 ′, which engage in correspondingly designed partially annular grooves 62 which are shaped in the sleeve 30.
  • the air-impermeable sleeve 22 can also be designed to be more or less air-permeable;
  • the groove-like channels can also extend to the tobacco-side end of the filter core 20.

Description

Die Erfindung betrifft eine variabel ventilierbare Filtercigarette mit einem Rillenfilter gemäss Oberbegriff des Hauptanspruches.The invention relates to a variably ventilated filter cigarette with a groove filter according to the preamble of the main claim.

Derartige Filtercigaretten sind gemäss DE-OS 3011 959 bekannt und bewirken eine strenge Trennung von Rauchstrom und Ventilationsluft und eine Mischung derselben erst im Mund des Rauchers.Such filter cigarettes are known according to DE-OS 3011 959 and cause a strict separation of smoke flow and ventilation air and a mixture of these only in the smoker's mouth.

Der Anteil der Ventilations- oder Beiluft hängt bei derartigen ventilierten Filtercigaretten von mehreren Faktoren wie beispielsweise von der Luftdurchlässigkeit des Umhüllungsblattes, d.h. von der Anzahl und Grösse der Perforationen, und ferner von der Grösse und Anzahl der Kanäle im Rillenfilter, vom Filterwiderstand und von dem sich beim Abbrennen der Cigarette ändernden Vorwiderstand des Tabakstranges ab.The proportion of ventilation or auxiliary air in such ventilated filter cigarettes depends on several factors, such as the air permeability of the wrapping sheet, i.e. on the number and size of the perforations, and also on the size and number of channels in the groove filter, the filter resistance and the series resistance of the tobacco rod which changes when the cigarette is burned off.

Zwar lässt sich durch sorgfältige Abstimmung dieser Parameter der jeweils gewünschte Beiluftbereich erzielen, indem man z.B. zur Vergrösserung des Anteils der Beiluft grössere Rillen im Rillenfilter vorsieht und die Umhüllungsblätter mit einer entsprechend durchlässigeren Perforation austattet. Derartige Änderungen des Ventilationsgrades sind jedoch umständlich und erschweren die Cigarettenherstellung erheblich.By carefully coordinating these parameters, the desired air intake range can be achieved by e.g. To increase the proportion of the additional air, larger grooves are provided in the groove filter and the wrapping sheets are provided with a correspondingly more permeable perforation. However, such changes in the degree of ventilation are cumbersome and make cigarette manufacture considerably more difficult.

Es ist zwar bereits aus der US-PS 3 390 684 eine Filtercigarette bekannt, bei der man den Ventilationsluftstrom entweder durch Abdecken einer Ventilationsöffnung mittels eines Fingers oder einer aufgeschobenen Hülse regulieren kann. Hierbei ist jedoch einmal die mangelhafte Variabilität der Zufuhr des Ventilationsluftstromes und zum anderen das Abweichen des äusseren Aussehens gegenüber herkömmlichen Filtercigaretten von Nachteil. Es sind ferner aus der US-PS 3 376 874 drehbar angeordnete topfartige Hülsen für Cigarettenfilter bekannt, mit denen der Raucher je nach Grad der Drehung die Filterwirkung beeinflussen kann. Diese regelbaren Filter mit topfartiger Hülse lassen sich nur auf komplizierte Weise herstellen und verändern ebenfalls den gewohnten Habitus einer üblichen Filtercigarette. Alle diese bekannten Filter haben ferner den Nachteil, dass sie keine vom Rauchstrom streng getrennte Führung des Ventilationsluftstromes haben.It is true that a filter cigarette is already known from US Pat. No. 3,390,684, in which the ventilation air flow can be regulated either by covering a ventilation opening by means of a finger or by pushing on a sleeve. Here, on the one hand, the inadequate variability of the supply of the ventilation air flow and, on the other hand, the deviation of the external appearance compared to conventional filter cigarettes is disadvantageous. There are also known from US Pat. No. 3,376,874 rotatably arranged pot-like sleeves for cigarette filters with which the smoker can influence the filter effect depending on the degree of rotation. These adjustable filters with a pot-like sleeve can only be produced in a complicated manner and also change the habitual habit of a conventional filter cigarette. All these known filters also have the disadvantage that they have no guidance of the ventilation air flow that is strictly separate from the smoke flow.

Die Erfindung hat sich die Aufgabe gestellt, eine variabel ventilierbare Filtercigarette der eingangs geschilderten Art mit mehreren vom Rauchstrom getrennten Ventilationskanälen zu entwickeln, die je nach den momentanen Rauchgewohnheiten des Konsumenten von diesem selber ohne Änderung der Aromaqualität auf eine mehr oder weniger grosse Ventilierbarkeit reproduzierbar einstellbar ist und die sich in ihrem Mantelbereich hinsichtlich ihres Aussehens gegenüber herkömmlichen Filtercigaretten nicht unterscheidet und letztlich auf einfache und herkömmliche Weise herstellbar ist.The invention has set itself the task of developing a variably ventilated filter cigarette of the type described above with several ventilation channels separated from the smoke flow, which depending on the current smoking habits of the consumer himself can be reproducibly adjusted to a greater or lesser degree of ventilation without changing the aroma quality and which does not differ in terms of its appearance from conventional filter cigarettes in terms of its shell area and can ultimately be produced in a simple and conventional manner.

Zur Lösung dieser Aufgabe wird daher eine ventilierte Filtercigarette mit einem Rillenfilter vorgeschlagen, das aus einem vollzylindrischen Filterkörper mit einer diesen umgebenden luftundurchlässigen Hülse besteht, auf deren Umfangsfläche mehrere sich im wesentlichen axial erstreckende, mundseitig offene und tabakseitig geschlossene rillenartige Kanäle mit Abstand zueinander angeordnet sind, und bei welcher der Filterkörper und das filterseitige Ende des Tabakabschnitts von einem Umhüllungsblatt umgeben sind, das mindestens im Bereich der rillenartigen Kanäle luftdurchlässig ist und die gekennzeichnet ist durch eine im Anschluss an das mundseitige Ende des Rillenfilters vorgesehene Hülse, die drehbar in dem über das Rillenfilter hinaus verlängerten Umhüllungsblatt angeordnet und topfartig ausgebildet ist und eine an der Stirnfläche des Rillefilters anliegende Bodenfläche mit einer mittigen Durchbrechung und im Randbereich liegende Durchbrechungen oder Aussparungen aufweist, wobei die im Randbereich liegenden Durchbrechungen oder Aussparungen mit den Austrittsöffnungen der rillenartigen Kanäle durch Drehung der Hülse von einer Durchgangsstellung in eine teilweise odervöllige Sperrstellung bringbar sind.To solve this problem, a ventilated filter cigarette with a groove filter is therefore proposed, which consists of 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, open on the mouth side and closed on the tobacco side are arranged at a distance from one another, and in which the filter body and the filter-side end of the tobacco section are surrounded by a wrapping sheet which is permeable to air at least in the region of the groove-like channels and which is characterized by a sleeve provided after the mouth-side end of the groove filter, which is rotatable in the over the groove filter In addition, an elongated wrapping sheet is arranged and has a pot-like design and has a bottom surface which lies against the end face of the groove filter and has a central opening and openings or recesses in the edge area, the Openings or recesses in the edge area with the outlet openings of the groove-like channels can be brought from a through position into a partially or completely blocked position by rotating the sleeve.

Durch diese Kombination wird überraschenderweise nicht nur erreicht, dass der Raucher selber eine einfache Variationsmöglichkeit durch nur eine Drehbewegung hat, sondern dass nur die durch die Rillen des Rillenfilters geführte Beiluft abgesperrt bzw. reduziert werden kann. Der Rauchhauptstrom bleibt hinsichtlich Geschmack und Aroma qualitativ unverändert, da dieser nur durch den vorgegebenen Filterteil in seiner Qualität beeinflusst wird; durch die Regelung der Beiluft wird nur die Konzentration des Hauptrauchstromes in Richtung auf eine «leichtere» oder «schwerere» Cigarette bei Beibehaltung des Aromas beeinflusst.This combination surprisingly not only achieves that the smoker himself has a simple possibility of variation by only one rotary movement, but that only the auxiliary air guided through the grooves of the groove filter can be blocked or reduced. The main smoke stream remains qualitatively unchanged in terms of taste and aroma, since its quality is only influenced by the specified filter part; By regulating the additional air, only the concentration of the main smoke flow in the direction of a “lighter” or “heavier” cigarette is influenced while maintaining the aroma.

Vorzugsweise ist die erfindungsgemässe Filtercigarette so ausgebildet, dass die topfartige Hülse in dem verlängerten Umhüllungsblatt mittels einer ringförmig umlaufenden Nut, die an der Aussenfläche der topfartigen Hülse liegt, und einer in die Nut eingreifenden ringförmigen Feder der an der Innenfläche des verlängerten Umhüllungsblattes angeordnet ist, in Dreheingriff gehalten ist.The filter cigarette according to the invention is preferably designed in such a way that the pot-like sleeve is arranged in the extended wrapping sheet by means of an annular circumferential groove which lies on the outer surface of the pot-like sleeve and an annular spring which engages in the groove and which is arranged on the inner surface of the elongated wrapping sheet Turning engagement is held.

Bei einer weiteren Ausführungsform gemäss Erfindung kann die variabel ventilierbare Filtercigarette so ausgebildet sein, dass der Innenraum der topfartigen Hülse teilweise oder vollständig mit Filtermaterial ausgefüllt ist.In a further embodiment according to the invention, the variably ventilatable filter cigarette can be designed such that the interior of the pot-like sleeve is partially or completely filled with filter material.

Diese zusätzliche Ausführung mit Filtermaterial kann mittels eines einfachen Filterpfropfens, aber auch mit einem gerillten Filter erfolgen. Bei einem zusätzlichen Rillenfilter in der topfartigen Hülse ergeben sich - sofern dessen Rillen mit den Rillen des vollzylindrischen Filterkörpers fluchten und insbesondere, wenn diese Rillen gegenüber dem Filterpfropfen in der Hülse abgedichtet sind - ebenfalls keine qualitativen Unterschiede beim Rauchhauptstrom. Dieser kann jedoch in seiner qualitativen Wirkung beeinflusst werden, wenn man den Hauptrauchstrom durch den Filterpfropfen in der topfartigen Hülse strömen lässt, sei es durch Verdrehung der Hülse, mit der man die Fluchtung der Kanäle unterbindet und/oder durch eine gewollte Durchlässigkeit für den Beiluftstrom von den Kanälen des in der Hülse befindlichen gerillten Filterpfropfens in diesen hinein, um in diesem vorgesetzten Filter eine Bündelung und Vermischung von Beiluft und Rauchhauptstrom zu erzielen.This additional version with filter material can be done with a simple filter plug, but also with a grooved filter. With an additional groove filter in the pot-like sleeve, there are no qualitative differences in the main smoke flow, provided that the grooves are aligned with the grooves of the fully cylindrical filter body and in particular if these grooves are sealed off from the filter plug in the sleeve. However, this can be influenced in its qualitative effect if the main smoke flow is allowed to flow through the filter plug in the pot-like sleeve, be it by twisting the sleeve with which the alignment of the channels is prevented and / or by a deliberate permeability for the supply air flow from the channels of the grooved filter plug located in the sleeve into this in order to achieve bundling and mixing of the supply air and main smoke stream in this filter.

Bei den oben beschriebenen Filtercigaretten kann die drehbare Hülse am mundseitigen Ende beispielsweise durch Einsetzen eines Stiftes oder mit dem kleinen Finger in die entsprechende Stellung gedreht werden.In the case of the filter cigarettes described above, the rotatable sleeve at the mouth end can be rotated into the corresponding position, for example by inserting a pin or with the little finger.

Um die Filtercigarette noch dahingehend zu verbessern, dass das Verstellen der drehbaren topfartigen Hülse nunmehr auf einfachere Weise durch Zugriff von aussen ermöglicht wird und dabei gleichzeitig der äussere Habitus dieser Filtercigarette kaum merklich oder gar nicht verändert, wird vorgeschlagen, die dadurch gekennzeichnet ist, dass die topfartige Hülse eine über das verlängerte Umhüllungsblatt mundseitig hinausreichende hülsenartige Verlängerung aufweist.In order to improve the filter cigarette in such a way that the adjustment of the rotatable cup-like sleeve is now made easier by access from the outside and at the same time the outer habit of this filter cigarette hardly changes or does not change at all, it is proposed, which is characterized in that the pot-like sleeve has a sleeve-like extension that extends beyond the extended wrapping sheet on the mouth side.

Überraschenderweise hat sich gezeigt, dass diese hülsenartige Verlängerung sehr viel einfacher mit den Fingern von aussen angefasst werden kann, um die topfartige Hülse in die gewünschte Stellung zu drehen, und dass dabei der äussere Habitus der Cigarette ebenfalls nicht verändert wird, da praktisch der Aussendurchmesser der hülsenartigen Verlängerung nur um ein Geringes, nämlich um die Dicke des verlängerten Umhüllungsblattes, kleiner ist.Surprisingly, it has been shown that this sleeve-like extension can be gripped much more easily with the fingers from the outside in order to turn the pot-like sleeve into the desired position, and that the outer habit of the cigarette is not changed either, since practically the outer diameter of the sleeve-like extension only by a small amount, namely by the thickness of the extended wrapping sheet, is smaller.

Bei einer besonders bevorzugten Ausführungsform kann man diesen geringfügigen Unterschied im Aussendurchmesser auch dadurch ausgleichen, dass die hülsenartige Verlängerung in dem nicht mehr von dem verlängerten Umhüllungsblatt bedeckten Bereich nach einer Aufkröpfung beim Austritt aus dem verlängerten Umhüllungsblatt den gleichen Aussendurchmesser wie das von dem Umhüllungsblatt umgebene Rillenfilter hat und mit diesem fluchtet.In a particularly preferred embodiment, this slight difference in the outer diameter can also be compensated for by the fact that the sleeve-like extension in the region no longer covered by the extended wrapping sheet has the same outer diameter as the groove filter surrounded by the wrapping sheet when it emerges from the elongated wrapping sheet and escapes with it.

Bei einer weiteren vorteilhaften Ausführungsform ist die hülsenartige Verlängerung - unabhängig davon ob sie einen Zylinderring gleichen Durchmessers oder einen solchen mit einem aufgekröpften Bereich aufweist in dem nicht mehr von dem verlängerten Umhüllungsblatt bedeckten, also dem herausragenden Bereich mit einem weiteren Umhüllungsblatt bedeckt.In a further advantageous embodiment, the sleeve-like extension - regardless of whether it has a cylindrical ring of the same diameter or one with a cranked-off area in which the extended area is no longer covered, that is to say the protruding area is covered with a further envelope sheet.

Bei einer besonders bevorzugten Ausführungsform kann dieses weitere Umhüllungsblatt, welches auf dem herausragenden Teil der topfartigen Hülse bzw. auf der hülsenartigen Verlängerung aufgebracht ist, mit dem verlängerten Umhüllungsblatt über eine Sollbruchstelle verbunden sein. Diese Ausführungsform hat nicht nur den Vorteil, dass das Umhüllungsblatt im Bereich des Rillenfilters und das verlängerte Umhüllungsblatt im Bereich der topfartigen Hülse und auch das weitere Umhüllungsblatt optisch eine einheitlich durchgehende Fläche bilden, sondern dass auch die Herstellung einer derartigen Filtercigarette erheblich vereinfacht ist, da nur ein einziges Umhüllungsblatt mit Sollbruchstelle um das Rillenfilter, die topfartige Hülse und die hülsenartige Verlängerung in einem Arbeitsgang aufgebracht werden können.In a particularly preferred embodiment, this further wrapping sheet, which is applied to the protruding part of the pot-like sleeve or to the sleeve-like extension, can be connected to the elongated wrapping sheet via a predetermined breaking point. This embodiment not only has the advantage that the wrapping sheet in the area of the groove filter and the elongated wrapping sheet in the area of the pot-like sleeve and also the further wrapping sheet form a uniform, continuous surface, but also that the manufacture of such a filter cigarette is considerably simplified since only a single wrapping sheet with predetermined breaking point around the groove filter, the pot-like sleeve and the sleeve-like extension can be applied in one operation.

Der Verbraucher braucht nur durch kurzes Drehen im Bereich der hülsenartigen Verlängerung die Sollbruchstelle aufzusprengen, um die gewünschte Ventilationswirkung durch Drehen einzustellen.The consumer only needs to blow open the predetermined breaking point in the area of the sleeve-like extension in order to set the desired ventilation effect by turning.

Im Hinblick auf die leichte Drehbarkeit der Hülse und als Erleichterung für die Einstellbarkeit der Ventilationsluft ist es ferner von Vorteil, wenn an dem verlängerten Umhüllungsblatt und an der drehbaren Hülse Blockierungsmittel vorgesehen sind, die eine nur begrenzte Bewegung der drehbaren Hülse von einer Stellung, in der die Durchbrechungen oder die Aussparungen im Randbereich der Bodenfläche mit den Austrittsöffnungen der rillenartigen Kanäle in Durchgangsstellung liegen, in eine Sperrstellung zulassen. Vorzugsweise bestehen die Blockierungsmittel aus einem teilringförmigen Vorsprung oder eine Nase, die in eine teilringförmige Nut eingreifen, wobei auch mehrere Nasen mit Abstand zueinander angeordnet sein können, die in entsprechende teilringförmige Nuten eingreifen.In view of the easy rotatability of the sleeve and as a relief for the adjustability of the ventilation air, it is also advantageous if blocking means are provided on the elongated wrapping sheet and on the rotatable sleeve which only allow limited movement of the rotatable sleeve from a position in which allow the openings or the recesses in the edge region of the bottom surface with the outlet openings of the groove-like channels in the passage position in a blocking position. The blocking means preferably consist of a partially annular projection or a lug, which engage in a partially annular groove, wherein a plurality of lugs can also be arranged at a distance from one another, which engage in corresponding partially annular grooves.

Bei einer besonders bevorzugten Ausführungsform können auf der Aussenfläche der hülsenartigen Verlängerung oder auf dem diese bedeckenden weiteren Umhüllungsblatt und auf der Aussenfläche des verlängerten Umhüllungsblattes Markierungen vorgesehen sein, die die völlige Durchtrittsstellung und/ oder Sperrstellung der Ventilationsluft anzeigen.In a particularly preferred embodiment, markings can be provided on the outer surface of the sleeve-like extension or on the further wrapping sheet covering it and on the outer surface of the elongated wrapping sheet, indicating the complete passage position and / or blocking position of the ventilation air.

Im folgenden soll die Erfindung anhand von Zeichnungen näher erläutert werden; es zeigen:

  • Fig. 1 a einen Längsschnitt durch die erfindungsgemässe Filtercigarette bei vollständiger Ventilierung;
  • Fig. 1 b einen Teillängsschnitt analog Fig. 1 a bei abgesperrter Ventilierung;
  • Fig. 2 eine teilweise geschnittene Ansicht der topfartigen Hülse;
  • Fig. 3a eine Ansicht des Bodens der topfartigen Hülse;
  • Fig. 3b eine Ansicht analog Fig. 3a eines abgewandelten Bodens;
  • Fig. 4 einen Teillängsschnitt durch eine abgewandelte Filtercigarette mit herausragender topfartigen Hülse;
  • Fig. 5 einen Teillängsschnitt durch den mundseitigen Bereich der erfindungsgemässen Filtercigarette analog Fig. 4 bei vollständiger Ventilierung;
  • Fig. 6 einen Teilschnitt durch eine weitere Ausbildung der hülsenartigen Verlängerung der drehbaren topfartigen Hülse mit Aufkröpfung;
  • Fig. 7 einen Teilschnitt analog Fig. 6, bei dem das weitere Umhüllungsblatt mit dem verlängerten Umhüllungsblatt über eine Sollbruchstelle verbunden ist;
  • Fig. 8 einen senkrechten Schnitt durch das Mundstück der Filtercigarette im Bereich der topfartigen Hülse mit Blockierungsmitteln.
In the following the invention will be explained in more detail with reference to drawings; show it:
  • 1 a shows a longitudinal section through the filter cigarette according to the invention with complete ventilation;
  • 1 b shows a partial longitudinal section analogous to FIG. 1 a with the ventilation shut off;
  • Fig. 2 is a partially sectioned view of the pot-like sleeve;
  • 3a shows a view of the bottom of the pot-like sleeve;
  • 3b is a view analogous to FIG. 3a of a modified floor;
  • 4 shows a partial longitudinal section through a modified filter cigarette with an outstanding pot-like sleeve;
  • 5 shows a partial longitudinal section through the mouth-side area of the filter cigarette according to the invention analogous to FIG. 4 with complete ventilation;
  • 6 shows a partial section through a further embodiment of the sleeve-like extension of the rotatable pot-like sleeve with an offset;
  • FIG. 7 shows a partial section similar to FIG. 6, in which the further wrapping sheet is connected to the elongated wrapping sheet via a predetermined breaking point;
  • Fig. 8 is a vertical section through the mouthpiece of the filter cigarette in the region of the pot-like sleeve with blocking agents.

Bei der in Fig. 1 gezeigten Filtercigarette ist ein Tabakabschnitt 12 mit einem Tabakstrang 14 und einer Papierhülse 16 für diesen vorgesehen. Der Rillenfilter 18 besteht aus einem zylindrischen Filterkörper 20 mit einer luftundurchlässigen Hülse 22, in deren Umfangsfläche rillenartige Kanäle 24 eingelassen sind. Dieser Rillenfilter 18 ist von einem Umhüllungsblatt 26 umgeben, in dem im Bereich der Kanäle Perforationen 28 vorgesehen sind. Die Kanäle sind zum mundseitigen Ende hin offen und zum tabakseiten Ende hin geschlossen.In the filter cigarette shown in FIG. 1, a tobacco section 12 with a tobacco rod 14 and a paper tube 16 is provided for this. The groove filter 18 consists of a cylindrical filter body 20 with an air-impermeable sleeve 22, in the circumferential surface of which groove-like channels 24 are embedded. This groove filter 18 is surrounded by a wrapping sheet 26, in which perforations 28 are provided in the region of the channels. The channels are open towards the mouth end and closed towards the tobacco end.

Die Beiluft strömt durch die Perforationen 28 und die Kanäle 24 und gelangt getrennt von dem durch den Filterkern 20 des Rillenfilters strömenden Rauch durch die Austrittsöffnungen 25 (Fig. 1 a) der rillenartigen Kanäle 24 in den Mund des Rauchers.The auxiliary air flows through the perforations 28 and the channels 24 and, separate from the smoke flowing through the filter core 20 of the groove filter, passes through the outlet openings 25 (FIG. 1 a) of the groove-like channels 24 into the smoker's mouth.

Am mundseitigen Ende des Rillenfilters 18 ist eine topfartige Hülse 30 angeordnet, die von einem verlängerten Umhüllungsblatt 26' drehbar gehalten wird. Die topfartige Hülse hat wie Fig. 2 zeigt, eine ringförmig umlaufende Nut 40, in die ein ringförmig umlaufender Vorsprung 38 eingreift, der an der Innenfläche des verlängerten Umhüllungsblattes 26' vorgesehen ist. Durch diese Anordnung ist die topfartige Hülse 30 um ihre Längsachse drehbar, ist aber andererseits gegen ein Herausrutschen gesichert. Die Bodenfläche 32 der topfartigen Hülse 30 besitzt, wie in Fig. 3a gezeigt, verschiedene Durchbrechungen, und zwar eine mittige Durchbrechung 34 im Bereich der Stirnfläche 21 des Rillenfilters und ferner weitere Durchbrechungen 36 im Randbereich der Bodenfläche 32, die fluchtend zu den Austrittsöffnungen 25 (Fig. 1a) der rillenartigen Kanäle 24 liegen.At the mouth end of the groove filter 18, a pot-like sleeve 30 is arranged, which is rotatably held by an extended wrapping sheet 26 '. As shown in FIG. 2, the pot-like sleeve has an annular circumferential groove 40, into which an annular circumferential projection 38 engages, which is provided on the inner surface of the elongated wrapping sheet 26 '. With this arrangement, the pot-like sleeve 30 is rotatable about its longitudinal axis, but on the other hand is secured against slipping out. As shown in FIG. 3a, the bottom surface 32 of the cup-like sleeve 30 has various openings, namely a central opening 34 in the area of the end face 21 of the groove filter and further openings 36 in the edge area of the bottom surface 32, which are aligned with the outlet openings 25 ( Fig. 1a) of the groove-like channels 24 are.

Die Durchbrechungen 36 können entweder als gesonderte Öffnungen (Fig. 3a) oder als Aussparungen ausgebildet sein, wie es in Fig. 3b gezeigt ist; hier gehen die im Randbereich liegenden Aussparungen 37 in die mittige Durchbrechung über.The openings 36 can either be designed as separate openings (FIG. 3a) or as cutouts, as shown in FIG. 3b; here the recesses 37 located in the edge area merge into the central opening.

Durch entsprechende Drehung der topfartigen Hülse lassen sich zwei Extremfälle für die Ventilierbarkeit erzielen. Bei der in Fig. 1 b gezeigten Darstellung ist die Bodenfläche 32 der topfartigen Hülse 30 so gedreht, dass die Bodenfläche über die Austrittsöffnungen 25 der rillenartigen Kanäle 24 zu liegen kommt; diese Lage verhindert somit einen Zutritt von Beiluft und damit eine Ventilation.Appropriate rotation of the pot-like sleeve allows two extreme cases for ventilation to be achieved. In the illustration shown in FIG. 1 b, the bottom surface 32 of the pot-like sleeve 30 is rotated such that the bottom surface comes to lie over the outlet openings 25 of the groove-like channels 24; this position thus prevents the entry of additional air and thus ventilation.

Bei der in Fig. 1a gezeigten Darstellung befinden sich die im Randbereich der Bodenfläche 32 liegenden Durchbrechungen 36 in Deckung mit den Austrittsöffnungen 25 der rillenartigen Kanäle 24, so dass die Beiluft durch die rillenartigen Kanäle 24 ungehindert in die topfartige Hülse 30 einströmen kann und sich dort mit dem bereits gefilterten Rauch vermischen kann, der durch den Filterkörper 20 und die mittige Durchbrechung 34 im Boden 32 der topfartigen Hülse in den Innenraum 42 dieser Hülse eintritt. Dieser Innenraum 42 der topfartigen Hülse kann gegebenenfalls auch weiteres Filtermaterial entweder teilweise z.B. als Filterring 44 (Fig. 2) oder vollständig enthalten.In the illustration shown in FIG. 1a, the openings 36 located in the edge region of the bottom surface 32 are in register with the outlet openings 25 of the groove-like channels 24, so that the additional air can flow in through the groove-like channels 24 unhindered into the pot-like sleeve 30 and there can mix with the already filtered smoke which enters through the filter body 20 and the central opening 34 in the bottom 32 of the pot-like sleeve into the interior 42 of this sleeve. This interior 42 of the pot-like sleeve can optionally also include additional filter material either partially e.g. included as a filter ring 44 (Fig. 2) or completely.

Bei der in Fig. 4 gezeigten Ausführungsform ist die topfartige Hülse 30 über das verlängerte Umhüllungsblatt 26' mundseitig verlängert und bildet eine über das Umhüllungsblatt 26' hinausreichende hülsenartige Verlängerung 50. Durch diese Ausbildung ist es möglich, durch leichten Griff mit den Fingern an der überstehenden hülsenartigen Verlängerung die gewünschte Ventilation einzustellen.In the embodiment shown in FIG. 4, the pot-like sleeve 30 is extended on the mouth side via the extended wrapping sheet 26 'and forms a sleeve-like extension 50 which extends beyond the wrapping sheet 26'. This configuration makes it possible to lightly grip the protruding part with a finger sleeve-like extension to set the desired ventilation.

Da bei dieser Ausführungsform noch ein geringer Absatz zwischen dem überstehenden Teil der hülsenartigen Verlängerung 50 und dem verlängerten Umhüllungsblatt 26' besteht und damit der optische Habitus der Cigarette geringfügig geändert ist, wird bei einer bevorzugten Ausführungsform gemäss Fig. 5 die hülsenartige Verlängerung 50 in dem nicht mehr von dem verlängerten Umhüllungsblatt 26' bedeckten Bereich nach einer Aufkröpfung 52 beim Austritt aus dem verlängerten Umhüllungsblatt 26' etwas erweitert, wobei der Teil 54 der hinausreichenden hülsenartigen Verlängerung 50 mehr oder weniger den gleichen Aussendurchmesser wie das von dem Umhüllungsblatt 26 umgebene Rillenfilter 18 hat und mit diesem mehr fluchtet.Since in this embodiment there is still a small step between the protruding part of the sleeve-like extension 50 and the extended wrapping sheet 26 'and thus the optical habit of the cigarette is slightly changed, the sleeve-like extension 50 is not in a preferred embodiment according to FIG more of the area covered by the elongated sheathing sheet 26 'is slightly expanded after an offset 52 when exiting the elongated sheathing sheet 26', the part 54 of the extending sleeve-like extension 50 having more or less the same outside diameter as the groove filter 18 surrounded by the sheathing sheet 26 and aligned with this more.

Der Aussendurchmesser dieser beiden Teil kann gleich sein oder sich um einen geringen Anteil unterscheiden.The outside diameter of these two parts can be the same or differ by a small proportion.

Bei einer besonders bevorzugten Ausführungsform, wie sie in Fig. 6 gezeigt ist, ist die hülsenartige Verlängerung 50 in dem nicht mehr von dem verlängerten Umhüllungsblatt 26' bedeckten Bereich, also in dem vorstehenden Bereich 54 mit einem weiteren Umhüllungsblatt 56 bedeckt.In a particularly preferred embodiment, as shown in FIG. 6, the sleeve-like extension 50 is covered with a further wrapping sheet 56 in the area no longer covered by the elongated wrapping sheet 26 ′, that is to say in the projecting area 54.

Die Ausbildungsform kann sowohl bei einem abgekröpften als auch bei einem durchgehenden hülsenartigen Verlängerungsteil 50 bzw. 54 vorgesehen sein.The embodiment can be provided both with a cranked and with a continuous sleeve-like extension part 50 or 54.

Um eine bessere und gleichmässigere Ansicht des Umhüllungsblattes 26, des verlängerten Umhüllungsblattes 26' und des zusätzlichen weiteren Umhüllungsblattes 56 zu ermöglichen, können diese Teile aus einem einheitlichen Material gefertigt und durch eine Sollbruchstelle eine Verbindung zwischen der Umhüllungsblattverlängerung und dem Umhüllungsblatt 56' hergestellt werden, wie es in Fig. 7 gezeigt ist.In order to enable a better and more uniform view of the wrapping sheet 26, the elongated wrapping sheet 26 'and the additional further wrapping sheet 56, these parts can be produced from a uniform material and a connection between the wrapping sheet extension and the wrapping sheet 56' can be established by a predetermined breaking point, such as it is shown in Fig. 7.

Diese Ausbildungsform hat nicht nur den Vorteil eines besseren optischen Habitus, sondern ergibt auch eine einfachere und bessere Herstellung, bei der alle das Umhüllungsblatt bildende Bereiche, nämlich das eigentliche Umhüllungsblatt 26, das verlängerte Umhüllungsblatt 26' und das weitere Umhüllungsblatt 56 bzw. 56' in einem Arbeitsgang an der Filtercigarette angebracht werden können.This form of training not only has the advantage of a better optical habit, but also results in a simpler and better production, in which all the areas forming the wrapping sheet, namely the actual wrapping sheet 26, the elongated wrapping sheet 26 'and the further wrapping sheet 56 or 56' in can be attached to the filter cigarette in one operation.

Durch eine einfache Drehbewegung im äusseren Bereich des weiteren Umhüllungsblattes 56' also am äusseren Ende des Mundstückes, wird die Sollbruchstelle 58 gesprengt und eine entsprechende Drehbewegung ermöglicht.The predetermined breaking point 58 is blown up and a corresponding rotary movement is made possible by a simple rotary movement in the outer region of the further wrapping sheet 56 ′, that is to say at the outer end of the mouthpiece.

Bei einer weiteren besonders bevorzugten Ausführungsform sind Blockierungsmittel vorgesehen, die eine nur begrenzte Bewegung der drehbaren Hülse 30 ermöglichen; und zwar von einer Stelle, in der die Durchbrechungen oder Aussparungen 36 der Bodenfläche 32 mit den Austrittsöffnungen 25 der rillenartigen Kanäle in Durchgangsstellung liegen, bis zu einer weiteren völligen Sperrstellung in der - wie in Fig. 1 gezeigt - überhaupt keine Nebenluft oder Beiluft eintritt.In a further particularly preferred embodiment, blocking means are provided which allow only a limited movement of the rotatable sleeve 30; from a point in which the openings or recesses 36 of the bottom surface 32 with the outlet openings 25 of the groove-like channels lie in the passage position to a further complete blocking position in which - as shown in FIG. 1 - no secondary air or auxiliary air occurs at all.

Diese Blockierungsmittel können wie in Fig. 8 gezeigt aus einem teilringförmigen Vorsprung oder einem nasenförmigen Vorsprung 60 bestehen. Dieser Vorsprung greift in eine entsprechende teilringförmige Nut 62 ein.As shown in FIG. 8, these blocking means can consist of a partially ring-shaped projection or a nose-shaped projection 60. This projection engages in a corresponding partially annular groove 62.

Vorzugsweise sind an der Innenfläche des verlängerten Umhüllungsblattes 26' mehrere Nasen 60 mit Abstand zueinander angeordnet, die in ebenfalls entsprechend ausgebildete teilringförmige Nuten 62 eingreifen, die in der Hülse 30 geformt sind.A plurality of lugs 60 are preferably arranged at a distance from one another on the inner surface of the elongated wrapping sheet 26 ′, which engage in correspondingly designed partially annular grooves 62 which are shaped in the sleeve 30.

Andere Blockierungsmittel sind ebenfalls möglich. Letztlich ist es zweckmässig, auf der Aussenfläche der hülsenartigen Verlängerung 50 oder auf der dem diese Verlängerung bedeckenden weiteren Umhüllungsblatt 56 bzw. 56' und ferner auf der Aussenseite des verlängerten Umhüllungsblates 26' , Markierungen vorzusehen, die die völlige Durchtrittsstellung und/oder Sperrstellung der Ventilationsluft anzeigen.Other blocking agents are also possible. Ultimately, it is expedient to provide markings on the outer surface of the sleeve-like extension 50 or on the further wrapping sheet 56 or 56 'covering this extension and also on the outside of the elongated wrapping sheet 26', which mark the complete passage Show ventilation and / or blocking position of the ventilation air.

Weitere Abänderungen sind möglich; so kann beispielsweise die luftundurchlässige Hülse 22 auch mehr oder weniger gering luftdurchlässig ausgebildet sein; ferner können die rillenartigen Kanäle auch bis an das tabaksseitige Ende des Filterkernes 20 reichen. Letztlich ist es auch möglich, im Bereich des Filterkörpers noch weitere Kammern mit anderem Filtermaterial vorzusehen.Further changes are possible; for example, the air-impermeable sleeve 22 can also be designed to be more or less air-permeable; Furthermore, the groove-like channels can also extend to the tobacco-side end of the filter core 20. Ultimately, it is also possible to provide further chambers with different filter material in the area of the filter body.

Claims (12)

1. Filter cigarette with a grooved filter (18) which consists of a full cylindrical filter body (20) with an air-impermeable casing (22) surrounding this, on the circumferential surface of which a number of groove-like channels (24), which extend essentially axially and are open at the mouth end and closed at the tobacco end, are positioned at a distance from each other, and in which the filter body (20) and the end of the tobacco section on the filter side are surrounded by a wrapping sheet (26), which is permeable to air at least in the area of the groove-like channels (24), characterised by a capsule (30) which is connected to the mouth end of the grooved filter (18), is cup-shaped and arranged rotatably in the wrapping sheet (26') which is extended over and beyond the grooved fitter (18);'tr)is capsule (30) having a base surface (32) located next to the end face (21) of the grooved filter (18) with a central opening (34) and openings (36) or recesses (37) located in the edge area, where by turning the capsule (30) the openings (36) or recesses (37) located in the edge area can be brought from an open position to a partly or completely closed position with the outlets (25) of the groove-like channels (24).
2. Filter cigarette according to claim 1, characterised in that the cup-shaped capsule (30) is held in rotary engagement in the extended wrapping sheet (26') by means of an annular circulating slot (40), which is located on the outer surface of the cup-shaped capsule (30), and an annular projection (38) engaging in the slot (40) which is positioned on the inner surface of the extended wrapping sheet (26').
3. Filter cigarette according to claims 1 and 2, characterised in that the inner area (42) of the cup-shaped capsule (30) is partially or completely filled with filter material (44) (fig. 2).
4. Filter cigarette according to claims 1 and 3, characterised in that the central opening (34) in the base surface (32) of the cup-shaped capsule (30) merges into the openings (36) or recess (37) located in the edge area.
5. Filter cigarette according to claims 1 to 4, characterised in that the cup-shaped capsule (30) has a sleeve-like extension (50) which extends atthe mouth end beyond the extended wrapping sheet (26' ).
6. Filter cigarette according to claim 5, characterised in that the sleeve-like extension (50), in the area no longer covered by the extended wrapping sheet (26') following a bend (52) on exit from the extended wrapping sheet (26'), has the same external diameter as the grooved filter (18) surrounded by the wrapping sheet (26'), and is aligned with this.
7. Filter cigarette according to claim 5 or 6, characterised in that the sleeve-like extension (50) is covered with a further wrapping sheet (56) in the area no longer covered by the extended wrapping sheet (26').
8. Filter cigarette according to claim 7, characterised in that the further wrapping sheet (56') is connected by means of a pre-set breaking point (58) to the extended wrapping sheet (26' ).
9. Filter cigarette according to claims 5 to 8, characterised in that on the extended wrapping sheet (26') and the rotatable capsule (30), blocking means (60, 62) are provided, which only permit a limited movement of the rotatable capsule (30) from a position in which the openings or the recesses (36) in the edge area of the base surface (32) are in the open position with the outlets (25) of the groove-like channels (24), into a closed position.
10. Filter cigarette according to claim 9, characterised in that the blocking means consist of a part ring-shaped projection or a lug (60), which engages in the part ring-shaped slot (62).
11. Filter cigarette according to claim 10, characterised in that several lugs (60) are positioned at a distance from each other on the inner surface of the extended wrapping sheet (26'), which engage in corresponding part ring-shaped slots (62).
12. Filter cigarette according to claims 5 to 12, characterised in that markings are provided on the outer surface of the sleeve-like extension (50, 54) or on the further wrapping sheet (56, 56') covering this, or on the outer surface of the extended wrapping sheet (26' which indicate the fully open and/or closed position for the ventilation air.
EP85107234A 1984-06-20 1985-06-12 Cigarette filter with variable ventilation Expired EP0167863B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85107234T ATE31601T1 (en) 1984-06-20 1985-06-12 VARIABLE VENTILABLE FILTER CIGARETTE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3422776A DE3422776C1 (en) 1984-06-20 1984-06-20 Filter cigarette with variable ventilation
DE3422776 1984-06-20
DE19853516841 DE3516841A1 (en) 1985-05-10 1985-05-10 Filter cigarette which can be ventilated in a variable fashion
DE3516841 1985-05-10

Publications (2)

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EP0167863A1 EP0167863A1 (en) 1986-01-15
EP0167863B1 true EP0167863B1 (en) 1988-01-07

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US (1) US4593707A (en)
EP (1) EP0167863B1 (en)
JP (1) JPH0722502B2 (en)
CA (1) CA1226498A (en)
ES (2) ES287550Y (en)

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JPH0722502B2 (en) 1995-03-15
ES287550Y (en) 1987-01-16
ES291377Y (en) 1987-01-16
ES287550U (en) 1986-05-01
ES291377U (en) 1986-05-16
EP0167863A1 (en) 1986-01-15
CA1226498A (en) 1987-09-08
JPS6131075A (en) 1986-02-13
US4593707A (en) 1986-06-10

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