EP3771350A1 - Filter, in particular conical filter, for cigarette or similar - Google Patents
Filter, in particular conical filter, for cigarette or similar Download PDFInfo
- Publication number
- EP3771350A1 EP3771350A1 EP19315082.8A EP19315082A EP3771350A1 EP 3771350 A1 EP3771350 A1 EP 3771350A1 EP 19315082 A EP19315082 A EP 19315082A EP 3771350 A1 EP3771350 A1 EP 3771350A1
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- EP
- European Patent Office
- Prior art keywords
- filter
- outer casing
- inner face
- folds
- filter according
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- 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.)
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- 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
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- 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
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
- A24D1/022—Papers for roll-your-own cigarettes
Definitions
- the present invention relates to a filter for a cigarette or the like.
- This filter is in particular a conical filter but it can also be a filter of cylindrical shape (which corresponds to a particular cone).
- cigarette or the like is meant here a rolled sheet, generally of paper, surrounding a dried and prepared vegetable substance, tobacco in the case of a cigarette, other substances for similar devices, and intended to be smoked.
- the filter is intended to be integral with one end of the envelope containing the tobacco, or other plant substance, and to form an interface between the tobacco, or the like, and the mouth of a smoker. Indeed, to smoke the cigarette or the like, the smoker draws air through the cigarette or the like and the filter is present to then prevent pieces of tobacco or the like from then coming into the mouth of the smoker.
- a conical envelope to have a better draft and to promote the combustion of the substances.
- a filter whose shape is adapted to the shape of the envelope to be able to more easily assemble the filter and the envelope (to be filled or filled).
- conical filters are carried out manually, at best semi-automatically. These filters most often have a conical outer casing and include internal walls inside the cone thus produced which come, on the one hand, to stiffen the outer casing and, on the other hand, to form a barrier to prevent pieces. of tobacco or other substance to pass.
- the internal walls have, for example, a W shape inside the conical casing.
- the object of the present invention is therefore to provide a filter having an outer envelope of revolution (conical or circular cylindrical) which can be integrated into an automated unit for manufacturing an assembly formed by a filter and by an envelope (conical or circular cylindrical ) intended to contain a dried vegetable substance (tobacco or other).
- the proposed filter could also be produced in an automated manner.
- This disclosure improves the situation.
- a filter for cigarettes or the like comprising an outer casing having a shape of revolution about a longitudinal axis.
- this filter has interior walls interconnected by folds; at least two plies extend along the inner face of the outer shell; at least two folds are made at a distance from the inner face of the outer casing, and the filter has a free space around the longitudinal axis.
- Such a filter by virtue of its shape, has, on the one hand, good mechanical resistance and, on the other hand, can be held by a rod at its center for possibly the manufacture of the filter but also subsequently for the integration of the filter into a cigarette or the like.
- inner walls are arranged between two folds which extend along the inner face of the outer casing.
- this first embodiment it is possible for example to provide that there are several successions of a first wall arranged between a first fold made at a distance from the inner face of the outer casing and a first fold made along said face. interior, a second wall arranged between the previous fold and a second fold made on the along said inner face and a third wall disposed between the previous ply and a second ply produced at a distance from said inner face.
- each inner wall apart from at most two of them, are arranged between a fold extending along the inner face of the outer casing and a fold made at a distance from the inner face of the outer casing.
- This document also relates to an assembly formed by a rolled sheet and a filter as described above, in which the outer envelope of the filter extends the rolled sheet.
- the figures 1 to 4 illustrate a first embodiment of a conical shaped filter.
- a cigarette comprises a sheet of paper, of the cigarette paper type, rolled up on itself so as to define a circular or conical cylindrical space in which the tobacco is located. It is also possible to put another plant substance in the rolled up sheet of paper. We then obtain a device similar to a cigarette.
- the illustrated filter is intended to serve as an interface between the cigarette or the like and the mouth of a user. It is intended in particular that by smoking a cigarette or the like, the substance (tobacco or the like) which is in a state chopped into small fine pieces does not come into the mouth of the user.
- the filters illustrated in the appended figures can be produced by cutting and folding a sheet, possibly with a gluing phase to keep the folded sheet in its final position.
- the sheet used is, by way of illustration and without limitation, for example a sheet of cardboard, having a thickness of approximately 0.15 mm and a basis weight of between 90 and 140 gm -2 .
- the filters shown also that of the figure 6 , have a frustoconical outer overall shape.
- the filters illustrated thus generally have a shape of revolution around an axis called hereafter the longitudinal axis (symbolized by a cross on the figures 3 and 4 ).
- the base of the filter that is to say the base of the frustoconical shape, has a diameter of approximately 8 mm corresponding to a conventional diameter for a cigarette
- edge 2 on the outer surface of the filter corresponds to the edge of the cut sheet used to form the filter.
- This ridge 2 extends along a generatrix of the frustoconical shape, from the base to the top of the truncated cone.
- the sheet (of cardboard) used to make the filter is rolled to form the frustoconical exterior surface of the filter and is also folded to form internal walls within the truncated cone thus produced.
- the different variants illustrated in the accompanying drawing are distinguished by the different folding effected and the different arrangement of the internal walls in the space delimited by the truncated cone.
- the internal walls are arranged so as to form a shape reminiscent of a flower.
- Each internal wall is of substantially trapezoidal shape. It is placed between two folds of the sheet and is delimited by two edges of the sheet cut to make the filter.
- two types of folds a first type of fold 4 with an angle of between 90 and 135 ° and a second type of fold 6 with an angle between 135 and 180 °.
- the first folds 4 are arranged against, or in the immediate vicinity (less than 0.5 mm) of the inner face of the truncated cone. There are at least two first folds 4.
- the second folds 6 are arranged around the longitudinal axis, between the truncated cone and the longitudinal axis, being closer to the longitudinal axis than to the inner face of the truncated cone. There are at least two second folds 6. On the figures 1 to 4 , the second folds 6 are twice as close to the longitudinal axis as to the truncated cone. This is a particular embodiment. It would not be departing from the scope of the invention to change this proportion.
- the second folds 6 define generatrices of a truncated cone parallel to the truncated cone forming the outer surface of the filter. Note that the interior space of the second truncated cone defined by the second folds 6 is empty. In this way, a space free of any wall is created around the longitudinal axis. It is thus possible to position the filter on a rod, preferably a rod having a taper close to that of the filter. By placing it on such a rod, the filter is positioned and centered. It can then be maintained without having to make contact with the outer peripheral surface of the filter.
- a first type of internal wall 8 corresponds to the internal walls arranged between two first folds 4. These first internal walls are oriented tangentially because they are parallel to planes tangential to the truncated cone of the filter.
- the second type of internal walls 10 corresponds to internal walls arranged between a first ply 4 and a second ply 6. These second internal walls 10 can be qualified as radial walls even if they do not pass exactly through the longitudinal axis of the trunk. cone.
- the first internal walls 8 and the second internal walls 10 form barriers in the filter which prevent tobacco, or the like, from passing through the filter. They do not, however, prevent the passage of air and hardly create a pressure drop for the air flow sucked in by a smoker drawing air through such a filter.
- the figure 6 illustrates an alternative embodiment of the embodiment of figures 1 to 4 .
- the structure of the internal walls is much the same, but here instead of having five "flower petals", there are eight.
- the second plies 6 meet and come into contact.
- first plies 14 which are arranged in the immediate vicinity (for example less than 1 mm) of the inner face of the portion of rolled sheet forming the frustoconical outer surface of the filter, as well as second plies 16 arranged at a distance from said inner face and closer to the longitudinal axis of the conical shape than to said inner face.
- the internal walls 18 are each time arranged between a first ply 14 and a second ply 16. There is then a configuration internal walls 18 which forms a star.
- the star has six branches but those skilled in the art will understand that it is possible to have a different number of branches (either more or less, preferably at least two and more preferably , at least three).
- this second truncated cone is substantially parallel to the truncated cone defining the external shape of the filter and the second folds 16 forming generatrices for this second truncated cone.
- the various embodiments described above have a filter with a conical exterior shape. This shape could also be cylindrical to adapt to cigarettes which are also cylindrical. There is thus a filter with an outer shape of revolution about a longitudinal axis. Inside the space delimited by this outer shape, there are internal walls which, on the one hand, form barriers preventing tobacco or the like from passing and, on the other hand, leave free a delimited space around it. the longitudinal axis.
- the filter thus produced has good mechanical strength despite the presence of a central free zone. It is greater than that obtained by carrying out a W (or M) folding known from the prior art.
- the embodiments described provide a free space around the longitudinal axis which has an overall shape of revolution around the longitudinal axis.
- the filter can thus take all the positions on the rod on which it takes place. It is therefore useless to orient it angularly before holding it.
- the filters can thus be packaged in bulk and it is unnecessary to provide an operation to orient them before coming to assemble them with a cigarette sheet or the like.
- the proposed product also has an aesthetic singularity which adds a plus to the finished product (filter and cigarette or similar equipped with this filter).
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- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
Un filtre pour cigarette ou similaire comporte :- une enveloppe extérieure de forme de révolution autour d'un axe longitudinal,- des parois intérieures (8, 10) reliées entre elles par des plis (4, 6).Au moins deux plis (4) s'étendent le long de la face intérieure de l'enveloppe extérieure et au moins un pli (6) est réalisé à distance de la face intérieure de l'enveloppe extérieure.Le filtre présente en outre un espace libre autour de l'axe longitudinal.A cigarette filter or the like comprises: - an outer envelope of the shape of a revolution about a longitudinal axis, - inner walls (8, 10) connected to each other by folds (4, 6). At least two folds (4 ) extend along the inner face of the outer casing and at least one fold (6) is made away from the inner side of the outer casing. The filter further has a free space around the axis longitudinal.
Description
La présente invention concerne un filtre pour cigarette ou similaire. Ce filtre est notamment un filtre conique mais il peut aussi s'agir d'un filtre de forme cylindrique (qui correspond à un cône particulier).The present invention relates to a filter for a cigarette or the like. This filter is in particular a conical filter but it can also be a filter of cylindrical shape (which corresponds to a particular cone).
On entend ici par cigarette ou similaire une feuille roulée, généralement en papier, entourant une substance végétale séchée et préparée, du tabac dans le cas d'une cigarette, d'autres substances pour les dispositifs similaires, et destinée à être fumée. Le filtre est destiné à être solidaire d'une extrémité de l'enveloppe contenant le tabac, ou autre substance végétale, et à former une interface entre le tabac, ou autre, et la bouche d'un fumeur. En effet, pour fumer la cigarette ou similaire, le fumeur aspire de l'air à travers la cigarette ou similaire et le filtre est présent pour empêcher alors des morceaux de tabac ou autre de venir alors dans la bouche du fumeur.By cigarette or the like is meant here a rolled sheet, generally of paper, surrounding a dried and prepared vegetable substance, tobacco in the case of a cigarette, other substances for similar devices, and intended to be smoked. The filter is intended to be integral with one end of the envelope containing the tobacco, or other plant substance, and to form an interface between the tobacco, or the like, and the mouth of a smoker. Indeed, to smoke the cigarette or the like, the smoker draws air through the cigarette or the like and the filter is present to then prevent pieces of tobacco or the like from then coming into the mouth of the smoker.
Pour fumer certaines substances, notamment des substances qui se consument moins facilement que du tabac, il est préférable d'avoir une enveloppe conique pour avoir un meilleur tirage et favoriser la combustion des substances. Dans ce cas, il est préférable d'avoir un filtre dont la forme est adaptée à la forme de l'enveloppe pour pouvoir plus facilement assembler le filtre et l'enveloppe (à remplir ou remplie).To smoke certain substances, in particular substances which are less easily consumed than tobacco, it is preferable to have a conical envelope to have a better draft and to promote the combustion of the substances. In this case, it is preferable to have a filter whose shape is adapted to the shape of the envelope to be able to more easily assemble the filter and the envelope (to be filled or filled).
Actuellement, la fabrication des filtres coniques est réalisée manuellement, au mieux semi-automatiquement. Ces filtres présentent le plus souvent une enveloppe extérieure conique et comportent des parois internes à l'intérieur du cône ainsi réalisé qui viennent, d'une part, rigidifier l'enveloppe extérieure et, d'autre part, former une barrière pour empêcher des morceaux de tabac ou autre substance de passer. Les parois internes présentent par exemple une forme de W à l'intérieur de l'enveloppe conique.Currently, the manufacture of conical filters is carried out manually, at best semi-automatically. These filters most often have a conical outer casing and include internal walls inside the cone thus produced which come, on the one hand, to stiffen the outer casing and, on the other hand, to form a barrier to prevent pieces. of tobacco or other substance to pass. The internal walls have, for example, a W shape inside the conical casing.
De par leur procédé de fabrication et de par leur forme, les filtres coniques actuels sont difficiles à intégrer dans un système de fabrication automatique et sont aussi difficiles à fabriquer de manière automatique.By virtue of their manufacturing process and their shape, current conical filters are difficult to integrate into an automatic manufacturing system and are also difficult to manufacture automatically.
La présente invention a alors pour but de fournir un filtre ayant une enveloppe extérieure de révolution (conique ou cylindrique circulaire) qui puisse être intégré dans une unité automatisée de fabrication d'un ensemble formé par un filtre et par une enveloppe (conique ou cylindrique circulaire) destinée à contenir une substance végétale séchée (tabac ou autre).The object of the present invention is therefore to provide a filter having an outer envelope of revolution (conical or circular cylindrical) which can be integrated into an automated unit for manufacturing an assembly formed by a filter and by an envelope (conical or circular cylindrical ) intended to contain a dried vegetable substance (tobacco or other).
De préférence, le filtre proposé pourra également être réalisé de manière automatisée.Preferably, the proposed filter could also be produced in an automated manner.
La présente divulgation vient améliorer la situation.This disclosure improves the situation.
Il est proposé un filtre pour cigarette ou similaire comportant une enveloppe extérieure de forme de révolution autour d'un axe longitudinal.There is provided a filter for cigarettes or the like comprising an outer casing having a shape of revolution about a longitudinal axis.
Selon la présente invention, ce filtre comporte des parois intérieures reliées entre elles par des plis ; au moins deux plis s'étendent le long de la face intérieure de l'enveloppe extérieure ; au moins deux plis sont réalisés à distance de la face intérieure de l'enveloppe extérieure, et le filtre présente un espace libre autour de l'axe longitudinal.According to the present invention, this filter has interior walls interconnected by folds; at least two plies extend along the inner face of the outer shell; at least two folds are made at a distance from the inner face of the outer casing, and the filter has a free space around the longitudinal axis.
Un tel filtre, de par sa forme, présente, d'une part, une bonne résistance mécanique et, d'autre part, peut être tenu par une tige en son centre pour éventuellement la fabrication du filtre mais aussi par la suite pour l'intégration du filtre dans une cigarette ou similaire.Such a filter, by virtue of its shape, has, on the one hand, good mechanical resistance and, on the other hand, can be held by a rod at its center for possibly the manufacture of the filter but also subsequently for the integration of the filter into a cigarette or the like.
Selon une première forme de réalisation d'un filtre décrit ci-dessus, des parois intérieures sont disposées entre deux plis qui s'étendent le long de la face intérieure de l'enveloppe extérieure. Selon cette première forme de réalisation, on peut par exemple prévoir qu'il existe plusieurs successions d'une première paroi disposée entre un premier pli réalisé à distance de la face intérieure de l'enveloppe extérieure et un premier pli réalisé le long de ladite face intérieure, d'une deuxième paroi disposée entre le pli précédent et un second pli réalisé le long de ladite face intérieure et d'une troisième paroi disposée entre le pli précédent et un second pli réalisé à distance de ladite face intérieure.According to a first embodiment of a filter described above, inner walls are arranged between two folds which extend along the inner face of the outer casing. According to this first embodiment, it is possible for example to provide that there are several successions of a first wall arranged between a first fold made at a distance from the inner face of the outer casing and a first fold made along said face. interior, a second wall arranged between the previous fold and a second fold made on the along said inner face and a third wall disposed between the previous ply and a second ply produced at a distance from said inner face.
Selon une deuxième forme de réalisation d'un filtre selon l'invention, chaque paroi intérieure, mis à part au plus deux d'entre elles, sont disposées entre un pli s'étendant le long de la face intérieure de l'enveloppe extérieure et un pli réalisé à distance de la face intérieure de l'enveloppe extérieure.According to a second embodiment of a filter according to the invention, each inner wall, apart from at most two of them, are arranged between a fold extending along the inner face of the outer casing and a fold made at a distance from the inner face of the outer casing.
Les caractéristiques exposées dans les paragraphes suivants peuvent, optionnellement, être mises en oeuvre. Elles peuvent être mises en oeuvre indépendamment les unes des autres ou en combinaison les unes avec les autres :
- les plis réalisés à distance de la paroi intérieure de l'enveloppe extérieure forment des génératrices autour de l'axe longitudinal d'une forme sensiblement parallèle à l'enveloppe extérieure ;
- l'enveloppe extérieure est de forme tronconique ;
- le filtre est réalisé en papier ou carton ;
- le filtre est réalisé à partir d'une feuille coupée et pliée, éventuellement collée localement.
- the folds made at a distance from the inner wall of the outer casing form generatrices around the longitudinal axis of a shape substantially parallel to the outer casing;
- the outer envelope is frustoconical in shape;
- the filter is made of paper or cardboard;
- the filter is made from a cut and folded sheet, possibly glued locally.
Le présent document concerne également un ensemble formé d'une feuille roulée et d'un filtre tel que décrit ci-dessus, dans lequel l'enveloppe extérieure du filtre vient prolonger la feuille roulée.This document also relates to an assembly formed by a rolled sheet and a filter as described above, in which the outer envelope of the filter extends the rolled sheet.
D'autres caractéristiques, détails et avantages apparaîtront à la lecture de la description détaillée ci-après, et à l'analyse du dessin annexé, sur lequel :
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Fig. 1 est une vue en perspective d'un filtre conique. -
Fig. 2 montre le filtre de lafigure 1 selon une autre perspective. -
Fig. 3 est une vue de face du filtre desfigures 1 et2 . -
Fig. 4 est une vue de face à 180° par rapport à la vue de lafigure 3 . -
Fig. 5 est une vue en perspective, sous deux angles différents d'une variante de réalisation d'un filtre conique. -
Fig. 6 montre une autre variante de réalisation en vue de face.
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Fig. 1 is a perspective view of a conical filter. -
Fig. 2 shows the filter of thefigure 1 from another perspective. -
Fig. 3 is a front view of thefigures 1 and2 . -
Fig. 4 is a front view 180 ° to the view of thefigure 3 . -
Fig. 5 is a perspective view, from two different angles, of an alternative embodiment of a conical filter. -
Fig. 6 shows another variant embodiment in front view.
Le dessin et la description ci-après contiennent, pour l'essentiel, des éléments de caractère certain. Ils pourront donc non seulement servir à mieux faire comprendre la présente divulgation, mais aussi contribuer à sa définition, le cas échéant.The drawing and the description below essentially contain elements of a certain nature. They can therefore not only serve to better understand this disclosure, but also contribute to its definition, if applicable.
Les
Le filtre illustré est destiné à former un embout de cigarette ou similaire. Une cigarette comporte une feuille de papier, de type papier à cigarette, roulée sur elle-même de manière à délimiter un espace cylindrique circulaire ou conique dans lequel se trouve du tabac. Il est possible de mettre aussi une autre substance végétale dans la feuille de papier roulée. On obtient alors un dispositif similaire à une cigarette.The illustrated filter is intended to form a cigarette mouthpiece or the like. A cigarette comprises a sheet of paper, of the cigarette paper type, rolled up on itself so as to define a circular or conical cylindrical space in which the tobacco is located. It is also possible to put another plant substance in the rolled up sheet of paper. We then obtain a device similar to a cigarette.
Le filtre illustré est destiné à servir d'interface entre la cigarette ou similaire et la bouche d'un utilisateur (ou utilisatrice). Il a notamment pour but qu'en fumant la cigarette ou similaire, la substance (tabac ou autre) qui se trouve dans un état haché en petits morceaux fins ne viennent pas dans la bouche de l'utilisateur.The illustrated filter is intended to serve as an interface between the cigarette or the like and the mouth of a user. It is intended in particular that by smoking a cigarette or the like, the substance (tobacco or the like) which is in a state chopped into small fine pieces does not come into the mouth of the user.
Les filtres illustrés sur les figures annexés peuvent être réalisés par découpe et pliage d'une feuille, avec éventuellement une phase de collage pour maintenir la feuille pliée dans sa position finale. La feuille utilisée est, à titre illustratif et non limitatif, par exemple une feuille de carton, présentant une épaisseur d'environ 0,15 mm et un grammage compris entre 90 et 140 gm-2.The filters illustrated in the appended figures can be produced by cutting and folding a sheet, possibly with a gluing phase to keep the folded sheet in its final position. The sheet used is, by way of illustration and without limitation, for example a sheet of cardboard, having a thickness of approximately 0.15 mm and a basis weight of between 90 and 140 gm -2 .
Comme il ressort des
On remarque sur les figures une arête 2 sur la surface extérieure du filtre. Cette arête 2 correspond au bord de la feuille découpée utilisée pour former le filtre. Cette arête 2 s'étend le long d'une génératrice de la forme tronconique, depuis la base jusqu'au sommet du tronc de cône.Note in the figures an
Pour chacune des formes de réalisation, la feuille (de carton) utilisée pour réaliser le filtre est roulée pour former la surface extérieure tronconique du filtre et est aussi pliée pour former des parois internes à l'intérieur du tronc de cône ainsi réalisé. Les différentes variantes illustrées sur le dessin annexé se distinguent par le pliage différent réalisé et la disposition différente des parois internes dans l'espace délimité par le tronc de cône.For each of the embodiments, the sheet (of cardboard) used to make the filter is rolled to form the frustoconical exterior surface of the filter and is also folded to form internal walls within the truncated cone thus produced. The different variants illustrated in the accompanying drawing are distinguished by the different folding effected and the different arrangement of the internal walls in the space delimited by the truncated cone.
Dans la forme de réalisation des
Chaque paroi interne est de forme sensiblement trapézoïdale. Elle est disposée entre deux plis de la feuille et est délimitée par deux bords de la feuille découpée pour réaliser le filtre. On remarque sur les
Les premiers plis 4 sont disposés contre, ou à proximité immédiate (moins de 0,5 mm) de la face intérieure du tronc de cône. On prévoit au moins deux premiers plis 4.The first folds 4 are arranged against, or in the immediate vicinity (less than 0.5 mm) of the inner face of the truncated cone. There are at least two
Les seconds plis 6 sont disposés autour de l'axe longitudinal, entre le tronc de cône et l'axe longitudinal, en étant plus proches de l'axe longitudinal que de la face intérieure du tronc de cône. On prévoit au moins deux seconds plis 6. Sur les
Ici, dans la forme de réalisation illustrée, correspondant à une forme de réalisation préférentielle (parmi d'autres), les seconds plis 6 définissent des génératrices d'un tronc de cône parallèle au tronc de cône formant la surface extérieure du filtre. On remarque que l'espace intérieur du second tronc de cône défini par les seconds plis 6 est vide. On crée de la sorte un espace libre de toute paroi autour de l'axe longitudinal. Il est ainsi possible de venir positionner le filtre sur une tige, de préférence une tige présentant une conicité proche de celle du filtre. En le plaçant sur une telle tige, le filtre se positionne et se centre. Il peut alors être maintenu sans avoir à réaliser de contact avec la surface périphérique extérieure du filtre.Here, in the illustrated embodiment, corresponding to a preferred embodiment (among others), the
De même qu'il y a deux types différents de plis, il y a deux types différents de parois internes. Un premier type de paroi interne 8 correspond aux parois internes disposées entre deux premiers plis 4. Ces premières parois internes sont orientées tangentiellement car elles sont parallèles à des plans tangentiels au tronc de cône du filtre.Just as there are two different types of folds, there are two different types of internal walls. A first type of
Le second type de parois internes 10 correspond à des parois internes disposées entre un premier pli 4 et un second pli 6. On peut qualifier ces secondes parois internes 10 de parois radiales même si elles ne passent pas exactement par l'axe longitudinal du tronc de cône.The second type of
On retrouve dans le tronc de cône formant la paroi extérieure du filtre plusieurs successions de trois parois internes dans cet ordre : seconde paroi interne 10, première paroi interne 8 et seconde paroi interne 10. Chacune de ces successions de trois parois internes forme un « pétale de fleur ». Dans la forme de réalisation illustrée sur les
Les premières parois internes 8 et les secondes parois internes 10 forment des barrières dans le filtre qui empêchent du tabac, ou similaire, de traverser le filtre. Elles n'empêchent toutefois pas le passage de l'air et ne créent quasiment pas de perte de charge pour le flux d'air aspiré par un fumeur aspirant de l'air à travers un tel filtre.The first
La
La forme de réalisation de la
Dans cette forme de réalisation, les parois internes 18 sont à chaque fois disposées entre un premier pli 14 et un second pli 16. On a alors une configuration des parois internes 18 qui forme une étoile. Dans la forme de réalisation représentée, l'étoile comporte six branches mais l'homme du métier comprendra qu'il est possible d'avoir un nombre de branches différent (soit plus, soit moins, de préférence au moins deux et de manière encore préférée, au moins trois).In this embodiment, the
Ici aussi, on retrouve autour de l'axe longitudinal du filtre une zone libre. Cette dernière est ici aussi de forme tronconique, ce second tronc de cône étant sensiblement parallèle au tronc de cône définissant la forme extérieure du filtre et les seconds plis 16 formant des génératrices pour ce second tronc de cône.Here too, there is a free zone around the longitudinal axis of the filter. The latter is here also of frustoconical shape, this second truncated cone being substantially parallel to the truncated cone defining the external shape of the filter and the second folds 16 forming generatrices for this second truncated cone.
Les différentes formes de réalisation décrites ci-dessus présentent un filtre de forme extérieure conique. Cette forme pourrait aussi être cylindrique pour s'adapter à des cigarettes qui sont elles aussi cylindriques. On trouve ainsi un filtre avec une forme extérieure de révolution autour d'un axe longitudinal. À l'intérieur de l'espace délimité par cette forme extérieure, se trouvent des parois internes qui, d'une part, forment des barrières empêchant du tabac ou similaire de passer et, d'autre part, laissent libres un espace délimité autour de l'axe longitudinal.The various embodiments described above have a filter with a conical exterior shape. This shape could also be cylindrical to adapt to cigarettes which are also cylindrical. There is thus a filter with an outer shape of revolution about a longitudinal axis. Inside the space delimited by this outer shape, there are internal walls which, on the one hand, form barriers preventing tobacco or the like from passing and, on the other hand, leave free a delimited space around it. the longitudinal axis.
Le filtre ainsi réalisé a une bonne résistance mécanique malgré la présence d'une zone libre centrale. Elle est supérieure à celle obtenue en réalisant un pliage en W (ou M) connu de l'art antérieur.The filter thus produced has good mechanical strength despite the presence of a central free zone. It is greater than that obtained by carrying out a W (or M) folding known from the prior art.
Grâce à la forme proposée, il est possible de tenir le produit par son centre en le positionnant sur une tige (de préférence conique). Les formes de réalisation décrites proposent un espace libre autour de l'axe longitudinal qui présente une forme globale de révolution autour de l'axe longitudinal. Le filtre peut ainsi prendre toutes les positions sur la tige sur laquelle il vient prendre place. Il est donc inutile de l'orienter angulairement avant de le tenir. Les filtres peuvent ainsi être conditionnés en vrac et il est inutile de prévoir une opération pour les orienter avant de venir les assembler avec une feuille de cigarette ou similaire.Thanks to the proposed shape, it is possible to hold the product by its center by positioning it on a rod (preferably conical). The embodiments described provide a free space around the longitudinal axis which has an overall shape of revolution around the longitudinal axis. The filter can thus take all the positions on the rod on which it takes place. It is therefore useless to orient it angularly before holding it. The filters can thus be packaged in bulk and it is unnecessary to provide an operation to orient them before coming to assemble them with a cigarette sheet or the like.
Le produit proposé présente aussi une singularité esthétique qui ajoute un plus au produit fini (filtre et cigarette ou similaire équipée de ce filtre).The proposed product also has an aesthetic singularity which adds a plus to the finished product (filter and cigarette or similar equipped with this filter).
La présente divulgation ne se limite pas aux exemples de réalisation décrits ci-avant, seulement à titre d'exemple, et aux variantes évoquées, mais elle englobe toutes les variantes que pourra envisager l'homme de l'art dans le cadre de la protection recherchée.The present disclosure is not limited to the embodiments described above, only by way of example, and to the variants mentioned, but it encompasses all the variants that a person skilled in the art may envisage in the context of protection. wanted.
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19315082.8A EP3771350A1 (en) | 2019-07-30 | 2019-07-30 | Filter, in particular conical filter, for cigarette or similar |
PCT/FR2020/051390 WO2021019184A1 (en) | 2019-07-30 | 2020-07-28 | Filter, particularly a conical filter, for a cigarette or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19315082.8A EP3771350A1 (en) | 2019-07-30 | 2019-07-30 | Filter, in particular conical filter, for cigarette or similar |
Publications (1)
Publication Number | Publication Date |
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EP3771350A1 true EP3771350A1 (en) | 2021-02-03 |
Family
ID=67614537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19315082.8A Withdrawn EP3771350A1 (en) | 2019-07-30 | 2019-07-30 | Filter, in particular conical filter, for cigarette or similar |
Country Status (1)
Country | Link |
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EP (1) | EP3771350A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3370594A (en) * | 1965-02-16 | 1968-02-27 | Brown & Williamson Tobacco | Filters for tobacco smoke |
WO2011049438A1 (en) * | 2009-10-22 | 2011-04-28 | Vandenberg Special Products B.V. | Filter for application in a cigarette tube, assembly, and method for manufacturing a filter |
US20140202479A1 (en) * | 2011-05-13 | 2014-07-24 | British American Tobacco (Investments) Limited | Support structure |
WO2016049648A2 (en) * | 2014-09-26 | 2016-03-31 | Sinclair Jr Daniel S | Cone with tobacco plug filter |
-
2019
- 2019-07-30 EP EP19315082.8A patent/EP3771350A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3370594A (en) * | 1965-02-16 | 1968-02-27 | Brown & Williamson Tobacco | Filters for tobacco smoke |
WO2011049438A1 (en) * | 2009-10-22 | 2011-04-28 | Vandenberg Special Products B.V. | Filter for application in a cigarette tube, assembly, and method for manufacturing a filter |
US20140202479A1 (en) * | 2011-05-13 | 2014-07-24 | British American Tobacco (Investments) Limited | Support structure |
WO2016049648A2 (en) * | 2014-09-26 | 2016-03-31 | Sinclair Jr Daniel S | Cone with tobacco plug filter |
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