EP0629354A1 - Method and device for forming products having variable tobacco density in the tobacco industry - Google Patents

Method and device for forming products having variable tobacco density in the tobacco industry Download PDF

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Publication number
EP0629354A1
EP0629354A1 EP93810432A EP93810432A EP0629354A1 EP 0629354 A1 EP0629354 A1 EP 0629354A1 EP 93810432 A EP93810432 A EP 93810432A EP 93810432 A EP93810432 A EP 93810432A EP 0629354 A1 EP0629354 A1 EP 0629354A1
Authority
EP
European Patent Office
Prior art keywords
tobacco
density
blade
bearing surface
cigarette
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93810432A
Other languages
German (de)
French (fr)
Other versions
EP0629354B1 (en
Inventor
Jacques Babey
Brian Salmon
Eric De Borst
Bernard Tallier
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.)
Philip Morris Products SA
Original Assignee
Fabriques de Tabac Reunies SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fabriques de Tabac Reunies SA filed Critical Fabriques de Tabac Reunies SA
Priority to SG1996004274A priority Critical patent/SG46399A1/en
Priority to ES93810432T priority patent/ES2109463T3/en
Priority to AT93810432T priority patent/ATE158476T1/en
Priority to DK93810432.0T priority patent/DK0629354T3/en
Priority to EP93810432A priority patent/EP0629354B1/en
Priority to DE69314165T priority patent/DE69314165T2/en
Priority to SK437-94A priority patent/SK281668B6/en
Priority to AU60649/94A priority patent/AU673417B2/en
Priority to HU9401320A priority patent/HU214185B/en
Priority to CZ941168A priority patent/CZ283949B6/en
Priority to CA002125111A priority patent/CA2125111C/en
Priority to PL94303833A priority patent/PL178897B1/en
Priority to US08/259,718 priority patent/US5501233A/en
Priority to JP15638994A priority patent/JP3484229B2/en
Publication of EP0629354A1 publication Critical patent/EP0629354A1/en
Priority to US08/575,108 priority patent/US5586565A/en
Application granted granted Critical
Publication of EP0629354B1 publication Critical patent/EP0629354B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/1814—Forming the rod containing parts of different densities, e.g. dense ends

Definitions

  • the present invention relates to a method and a device for obtaining a product from the tobacco industry, in particular a cigarette where the density of tobacco is variable over the length of said product, respectively of the cigarette.
  • a cigarette can be made composed in whole or in part of expanded tobacco strands and / or of expanded tobacco ribs, these ingredients being in the form of small strands more difficult to work than the usual long strands of raw tobacco.
  • a cigarette of this type obtained by a usual manufacturing process, will have a low filling density value, ie poor retention of the tobacco in the cigarette. If tobacco is used to increase this filling density to a favorable value, the filling is increased, respectively, its filling is obtained, a cigarette having modified characteristics, such as draw strength or yield, for example.
  • EP-A-0.354.874 describes a device for clipping a tobacco rod during manufacture, this device being preceded by a device making it possible to compress a portion of the length of the rod in order to increase the density of tobacco, these higher density portions corresponding to the ends of cigarettes, thus preventing them from losing strands of tobacco by their ends.
  • a first object of the present invention is to propose a method and a device making it possible to obtain an improved filling of a product of the tobacco industry or more particularly of a cigarette made up in whole or in part of other raw materials.
  • tobacco industry than long tobacco strands, either from expanded tobacco strands and / or ribs or short strands, which has a favorable compactness when measured by a compressibility meter and which is pleasant to smoke, not requiring excessive suction effort.
  • Another object of the invention is to provide a product from the tobacco industry or more particularly a better quality cigarette, made wholly or partly from strands and / or ribs of expanded tobacco or short strands, which exhibits improved filling and favorable compactness when measured by a compressibility measuring device and which is pleasant to smoke and does not require excessive suction force.
  • FIG. 1 there is a schematic perspective representation of a downstream portion of a conventional cigarette making machine 1 of known type. It comprises in particular a tank 10 containing tobacco or other raw materials as described above 2, as well as a porous belt 11 driven in a longitudinal movement by two pulleys 12 and 13. A depression is created on the upper part of the lower strand of the porous belt 11 in order to suck the tobacco strands 2 out of the tank 10 and to form a tobacco rod 20, below the belt 11 and circulating with it.
  • the machine 1 then comprises a device 14 for regulating the tobacco rod 20, consisting of two clipping discs 15, preferably of the type described in application EP-A-0,354,874, preceded by a cam compression device 16, in synchronous rotation with the advancement of the flange 20 and periodically compressing the flange, possibly being supplemented with a control device 17 of the tube, as described in application EP-A-0,465,414.
  • a device 14 for regulating the tobacco rod 20 consisting of two clipping discs 15, preferably of the type described in application EP-A-0,354,874, preceded by a cam compression device 16, in synchronous rotation with the advancement of the flange 20 and periodically compressing the flange, possibly being supplemented with a control device 17 of the tube, as described in application EP-A-0,465,414.
  • the flange 20 continues its path to then be separated from the porous belt 11, then be wrapped in a paper cover and cut into individual cigarettes in a known manner.
  • the cam 3 in FIG. 2 replaces the cam 16 in FIG. 1, in order to allow the production of a rod of tobacco of variable density.
  • the cam 3 is composed of a cylindrical core 30 rotating around an axis as indicated, and supporting a number of blades extending radially from the cylindrical core 20 and comprising bearing surfaces arranged so as to exert compression on the tobacco rod 20 which circulates along an axis perpendicular to the axis of rotation of the cam 3.
  • the cam 3 is designed to perform a turn for a length of tobacco rod equivalent to the length of two cigarettes, that is to say that the outer perimeter of the cam is two lengths of the tobacco part of a cigarette.
  • These bearing surfaces 31A are intended, given their relatively large bearing length, to compress the tobacco from the ends of each cigarette, ie the zones 21 of the rod 20 of FIG. 3A which thus see their density increase.
  • the cam 3 is completed with a plurality of other blades, 32, 33, 34 and 35, four in this case, ie two for each length of cigarette, these blades each having a bearing surface 32A, 33A, 34A and 35A whose support length is clearly shown in the case here lower than the bearing surfaces 31A.
  • the bearing surfaces 32A, 33A, 34A and 35A of this embodiment of the cam are arranged on the same cylindrical peripheral envelope as the bearing surfaces 31A, causing them to press equally on the flange 20 creating compressed areas of equal increased density.
  • FIG. 3A A longitudinal section of a flange 20 obtained using a cam 3 as described above is shown in FIG. 3A; a distinction is made between the zones with increased density 21 having a length equivalent to the length of the support surfaces 31A as well as the zones with increased density 22 which correspond to the passage of the support surfaces 32A and 33A or 34A and 35A, each of these zones being separated by a low density zone 23 corresponding to the passage of the tube between the bearing surfaces.
  • the sausage will receive its paper envelope then will be cut at the places marked by 24 in order to form the tobacco part of a cigarette.
  • the zones 23 with low density of tobacco all have the same length; this comes from the position of the blades around the core 30, it would also be possible to arrange the blades at different relative angles, so as to lengthen, respectively shorten, some of these areas.
  • FIG. 3B represents a curve showing the variation in density D of the tobacco along the rod of FIG. 3A, it can be seen that zones 23 are at low density, value D0, and that zones 21 are at higher density, value D1 .
  • the cam 3 in FIG. 4 is similar to the previous one, except that the blades 32, 33, 34 and 35 are each shaped by way of example in a different way, therefore having a different effect on the flange tobacco.
  • the bearing surface 32A of the blade 32 is located on a cylindrical peripheral envelope with a diameter slightly smaller than that of the cylindrical peripheral envelope of the bearing surfaces 31A; if the cam 3 had all its blades 32, 33, 34 and 35 designed in this way, the compression, respectively the density, of the zones 22 of the flange 20 would have a density higher than D0 but lower than D1, ie a value D2 as shown in Figure 5A.
  • a bearing surface 32A located at a higher level than that of the bearing surfaces 31A, thereby increasing the density of the zones 22 so that it is more higher than that of the zones 21.
  • Another possible variant is shown by the blade 33 whose bearing surface 33A is at the same level as the bearing surfaces 31A but whose bearing width is less than the width of that of the surfaces 31A, respectively of the flange 20; by a cam fitted with blades of this type, a rod is obtained of which only a central region of the width has a density as shown in FIG. 3B.
  • the blades 34 of FIG. 4 differs from the blade 34 of FIG.
  • FIG. 5B shows that the blade 35 of FIG. 4 shows a combination of the preceding variations, either having a bearing surface 35A situated at a lower level than that of the bearing surfaces 31A, a longer bearing length and a bearing width lower.
  • the central portion of the strand would then have a density distribution as shown in FIG. 5C. It is obvious that we will not encounter a cam as shown in FIG. 4 comprising such a variety of compression means, but which appears here only by way of example possible means of compression or increase in density.
  • the cam can be dimensioned to make one revolution for a length of cigarette or more than two turns per length of cigarette, the diameter of the cylindrical envelope of the bearing surfaces, the number of blades and surfaces d 'support as well as the speed of rotation of the cam being chosen accordingly, so that the peripheral speed of the bearing surfaces of the blades corresponds to the speed of longitudinal displacement of the rod.
  • intermediate zone with increased density 22 there is more than one intermediate zone with increased density 22 over the length of a cigarette, it is also possible that the type of compression is different between these zones, for example if there are three intermediate zones 22 over a length cigarette, without counting the end zones 21, there may be two lateral zones of high density and of short length, caused by bearing surfaces similar to the surfaces 32A of FIG. 2 surrounding a central zone 22 of slightly higher density weak, of greater length but not extending over the entire width of the rod, caused by a bearing surface similar to the surface 35A of FIG. 3.
  • a product of the tobacco industry or a cigarette composed in whole or in part of other raw materials of the tobacco industry that long tobacco strands, either from short strands, strands or expanded ribs , present, if manufactured as described above, one or more intermediate zones with higher density, so that its filling and its measured compactness are better than those of a cigarette not having these intermediate zones with higher density.
  • Such a product has an equivalent support and is as pleasant to smoke as a usual product.

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

Abstract

When manufacturing a cigarette which is completely or partly formed of strands or sides of expanded tobacco or short strands, or else containing a smaller amount of tobacco, difficulties are encountered in obtaining a cigarette which has an acceptable measured compressibility value. By providing a cigarette-manufacturing machine (1) with a cam (3) which has at least one additional bearing surface (32A, 33A, 34A, 35A) it is possible, just before the operation (15) of nipping the top off the twist (20), to compress a certain number of regions (22) of the said twist, thereby increasing the tobacco density in these regions. A cigarette including one or more regions (22) with a tobacco density which has been increased in this way has a measured compressibility value which is equivalent to a normal cigarette. <IMAGE>

Description

La présente invention concerne un procédé ainsi qu'un dispositif permettant d'obtenir un produit de l'industrie du tabac, notamment une cigarette où la densité de tabac est variable sur la longueur dudit produit, respectivement de la cigarette.The present invention relates to a method and a device for obtaining a product from the tobacco industry, in particular a cigarette where the density of tobacco is variable over the length of said product, respectively of the cigarette.

On peut réaliser une cigarette composées en tout ou partie de brins de tabac expansés et/ou de côtes de tabac expansées, ces ingrédients se présentant sous la forme de petits brins plus difficiles à travailler que les brins longs habituels du tabac brut. Une cigarette de ce type, obtenue par un procédé de fabrication habituel, présentera une faible valeur de densité de remplissage, soit un mauvais maintien du tabac dans la cigarette. Si pour augmenter cette densité de remplissage à une valeur favorable, on sert d'avantage le tabac, respectivement on augmente son bourrage, on obtient une cigarette présentant des caractéristiques, comme par exemple la résistance au tirage ou le rendement, modifiées.A cigarette can be made composed in whole or in part of expanded tobacco strands and / or of expanded tobacco ribs, these ingredients being in the form of small strands more difficult to work than the usual long strands of raw tobacco. A cigarette of this type, obtained by a usual manufacturing process, will have a low filling density value, ie poor retention of the tobacco in the cigarette. If tobacco is used to increase this filling density to a favorable value, the filling is increased, respectively, its filling is obtained, a cigarette having modified characteristics, such as draw strength or yield, for example.

Les problèmes mentionnés ci-dessus sont les mêmes lorsque la cigarette comprend une certaine proportion de brins de tabac courts non expansés, que ceux-ci soient choisis comme faisant partie d'un mélange particulier de tabac ou alors proviennent de la dégradation des brins de tabac lors des opérations antérieures de préparation.The problems mentioned above are the same when the cigarette contains a certain proportion of short, unexpanded tobacco strands, whether these are chosen as part of a particular tobacco mixture or else come from the degradation of the tobacco strands. during previous preparation operations.

La compacité du produit fini est contôlée par un appareil de mesure de compressibilité comme décrit dans le brevet EP-A-0.195.173.The compactness of the finished product is monitored by a device for measuring compressibility as described in patent EP-A-0.195.173.

La demande EP-A-0.354.874 décrit un dispositif d'écrêtage d'un boudin de tabac en cours de fabrication, ce dispositif étant précédé d'un dispositif permettant de comprimer une portion de la longueur du boudin afin d'en augmenter la densité de tabac, ces portions à plus haute densité correspondant aux extrémités des cigarettes, évitant ainsi qu'elles ne perdent des brins de tabac par leurs extrémités.EP-A-0.354.874 describes a device for clipping a tobacco rod during manufacture, this device being preceded by a device making it possible to compress a portion of the length of the rod in order to increase the density of tobacco, these higher density portions corresponding to the ends of cigarettes, thus preventing them from losing strands of tobacco by their ends.

Un premier but de la présente invention est de proposer un procédé et un dispositif permettant d'obtenir un remplissage amélioré d'un produit de l'industrie du tabac ou plus particulièrement d'une cigarette constituée en tout ou en partie d'autres matières premières de l'industrie du tabac que des brins de tabac longs, soit à partir de brins et/ou de côtes de tabac expansés ou de brins courts, qui présente une compacité favorable lorsqu'elle est mesurée par un appareil de mesure de compressibilité et qui soit agréable à fumer, ne nécessitant pas un effort d'aspiration excessif.A first object of the present invention is to propose a method and a device making it possible to obtain an improved filling of a product of the tobacco industry or more particularly of a cigarette made up in whole or in part of other raw materials. tobacco industry than long tobacco strands, either from expanded tobacco strands and / or ribs or short strands, which has a favorable compactness when measured by a compressibility meter and which is pleasant to smoke, not requiring excessive suction effort.

Un autre but de l'invention est de proposer un produit de l'industrie du tabac ou plus particulièrement une cigarette de meilleure qualité, constituée en tout ou partie à partir de brins et/ou de côtes de tabac expansés ou de brins courts, qui présente un remplissage amélioré et une compacité favorable lorsqu'elle est mesurée par un appareil de mesure de compressibilité et qui soit agréable à fumer, ne nécessitant pas un effort d'aspiration excessif.Another object of the invention is to provide a product from the tobacco industry or more particularly a better quality cigarette, made wholly or partly from strands and / or ribs of expanded tobacco or short strands, which exhibits improved filling and favorable compactness when measured by a compressibility measuring device and which is pleasant to smoke and does not require excessive suction force.

Ces buts sont obtenus par un procédé répondant aux caractéristiques des revendications 1 ou 2, à l'aide d'un dispositif possédant les caractéristiques mentionnées aux revendications 3 à 8. Un produit de l'industrie du tabac, notamment une cigarette obtenue par ce procédé et à l'aide de ce dispositif est décrite dans les revendications 9 à 13.These objects are obtained by a process corresponding to the characteristics of claims 1 or 2, using a device having the characteristics mentioned in claims 3 to 8. A product of the tobacco industry, in particular a cigarette obtained by this process and using this device is described in claims 9 to 13.

L'invention est expliquée plus en détails ci-dessous, en regard du dessin annexé comportant les figures où:

  • la figure 1 représente une vue générale d'une portion de machine à fabriquer les cigarettes,
  • la figure 2 représente une forme d'exécution d'une came de compression,
  • la figure 3A représente une portion d'un boudin de tabac,
  • la figure 3B est un graphique représentant la variation de densité du tabac dans le boudin de la figure 3A,
  • la figure 4 représente une came de compression comportant simultanément plusieurs variantes des moyens de compression, et
  • les figures 5A, 5B et 5C sont des graphiques représentant divers types de variation de la densité de tabac dans le boudin.
The invention is explained in more detail below, with reference to the attached drawing comprising the figures where:
  • FIG. 1 represents a general view of a portion of a machine for manufacturing cigarettes,
  • FIG. 2 represents an embodiment of a compression cam,
  • FIG. 3A represents a portion of a tobacco rod,
  • FIG. 3B is a graph representing the variation in density of the tobacco in the rod of FIG. 3A,
  • FIG. 4 represents a compression cam comprising simultaneously several variants of the compression means, and
  • FIGS. 5A, 5B and 5C are graphs showing various types of variation in the density of tobacco in the rod.

A la figure 1 on a une représentation schématique en perspective d'une portion aval d'une machine de fabrication de cigarettes 1 conventionnelle de type connu. Elle comprend en particulier un bac 10 contenant du tabac ou autres matières premières comme décrites précédemment 2, ainsi qu'une courroie poreuse 11 entraînée selon un mouvement longitudinal par deux poulies 12 et 13. Une dépression est créée sur la partie supérieure du brin inférieur de la courroie poreuse 11 afin d'aspirer les brins de tabac 2 hors du bac 10 et de former un boudin de tabac 20, au-dessous de la courroie 11 et circulant avec celle-ci. La machine 1 comprend ensuite un dispositif de régulation 14 du boudin de tabac 20, constitué de deux disques écrêteurs 15, de préférence du type décrit dans la demande EP-A-0.354.874, précédé d'un dispositif de compression à came 16, en rotation synchrone avec l'avance du boudin 20 et venant comprimer périodiquement le boudin, étant éventuellement complété d'un dispositif de contrôle 17 du boudin, comme décrit dans la demande EP-A-0.465.414. Après écrêtage, le boudin 20 continue son chemin pour être ensuite séparé de la courroie po-reuse 11, puis être enveloppé d'une couverture de papier et coupé en cigarettes individuelles selon une manière connue.In Figure 1 there is a schematic perspective representation of a downstream portion of a conventional cigarette making machine 1 of known type. It comprises in particular a tank 10 containing tobacco or other raw materials as described above 2, as well as a porous belt 11 driven in a longitudinal movement by two pulleys 12 and 13. A depression is created on the upper part of the lower strand of the porous belt 11 in order to suck the tobacco strands 2 out of the tank 10 and to form a tobacco rod 20, below the belt 11 and circulating with it. The machine 1 then comprises a device 14 for regulating the tobacco rod 20, consisting of two clipping discs 15, preferably of the type described in application EP-A-0,354,874, preceded by a cam compression device 16, in synchronous rotation with the advancement of the flange 20 and periodically compressing the flange, possibly being supplemented with a control device 17 of the tube, as described in application EP-A-0,465,414. After clipping, the flange 20 continues its path to then be separated from the porous belt 11, then be wrapped in a paper cover and cut into individual cigarettes in a known manner.

Dans le dispositif selon l'invention, la came 3 de la figure 2 vient remplacer la came 16 de la figure 1, afin de permettre la confection d'un boudin de tabac à densité variable. Comme on le voit sur cette figure, la came 3 est composée d'un noyau cylindrique 30 tournant autour d'un axe de la manière indiquée, et supportant un certain nombre de pales s'étendant radialement à partir du noyau cylindrique 20 et comportant des surfaces d'appui disposées de manière à exercer une compression sur le boudin de tabac 20 qui circule selon un axe perpendiculaire à l'axe de rotation de la came 3. Dans la forme d'exécution représentée ici, la came 3 est conçue pour effectuer un tour pour une longueur de boudin de tabac équivalent à la longueur de deux cigarettes, c'est-à-dire que le périmètre extérieur de la came vaut deux longueurs de la partie tabac d'une cigarette. On a donc deux premières pales 31, disposées en opposition l'une par rapport à l'autre de chaque côté du noyau 30, chacune d'entre elles comportant une surface d'appui 31A. Ces surfaces d'appui 31A sont destinées, vue leur longueur d'appui relativement importante, à comprimer le tabac des extrémités de chaque cigarette, soit les zones 21 du boudin 20 de la figure 3A qui voient ainsi leur densité augmenter. La came 3 est complétée d'une pluralité d'autres pales, 32, 33, 34 et 35, quatre dans le cas présent, soit deux pour chaque longueur de cigarette, ces pales ayant chacune une surface d'appui 32A, 33A, 34A et 35A dont la longueur d'appui est dans le cas représenté ici nettement inférieure aux surfaces d'appui 31A. Les surfaces d'appui 32A, 33A, 34A et 35A de cette forme d'exécution de la came sont disposées sur la même enveloppe périphérique cylindrique que les surfaces d'appui 31A, faisant qu'elles appuient de manière égale sur le boudin 20 créant des zones comprimées de densité augmentée égale.In the device according to the invention, the cam 3 in FIG. 2 replaces the cam 16 in FIG. 1, in order to allow the production of a rod of tobacco of variable density. As can be seen in this figure, the cam 3 is composed of a cylindrical core 30 rotating around an axis as indicated, and supporting a number of blades extending radially from the cylindrical core 20 and comprising bearing surfaces arranged so as to exert compression on the tobacco rod 20 which circulates along an axis perpendicular to the axis of rotation of the cam 3. In the embodiment shown here, the cam 3 is designed to perform a turn for a length of tobacco rod equivalent to the length of two cigarettes, that is to say that the outer perimeter of the cam is two lengths of the tobacco part of a cigarette. There are therefore two first blades 31, arranged in opposition to each other on each side of the core 30, each of them comprising a bearing surface 31A. These bearing surfaces 31A are intended, given their relatively large bearing length, to compress the tobacco from the ends of each cigarette, ie the zones 21 of the rod 20 of FIG. 3A which thus see their density increase. The cam 3 is completed with a plurality of other blades, 32, 33, 34 and 35, four in this case, ie two for each length of cigarette, these blades each having a bearing surface 32A, 33A, 34A and 35A whose support length is clearly shown in the case here lower than the bearing surfaces 31A. The bearing surfaces 32A, 33A, 34A and 35A of this embodiment of the cam are arranged on the same cylindrical peripheral envelope as the bearing surfaces 31A, causing them to press equally on the flange 20 creating compressed areas of equal increased density.

Une coupe longitudinale d'un boudin 20 obtenu à l'aide d'une came 3 comme décrite ci-dessus est représentée à la figure 3A; on y distingue les zones à densité augmentée 21 ayant une longueur équivalente à la longueur des surfaces d'appui 31A ainsi que les zones à densité augmentée 22 qui correspondent au passage des surfaces d'appui 32A et 33A ou 34A et 35A, chacune de ces zones étant séparée par une zone 23 à faible densité correspondant au passage du boudin entre les surfaces d'appui. Dans la suite du processus de fabrication, le boudin recevra son enveloppe de papier puis sera coupé aux endroits marqués par 24 afin de former la partie tabac d'une cigarette. On remarque sur la figure 3A que les zones 23 à faible densité de tabac ont toutes la même longueur; ceci provient de la position des pales autour du noyau 30, il serait tout aussi possible de disposer les pales selon des angles relatifs différents, de manière à allonger, respectivement raccourcir, certaines de ces zones.A longitudinal section of a flange 20 obtained using a cam 3 as described above is shown in FIG. 3A; a distinction is made between the zones with increased density 21 having a length equivalent to the length of the support surfaces 31A as well as the zones with increased density 22 which correspond to the passage of the support surfaces 32A and 33A or 34A and 35A, each of these zones being separated by a low density zone 23 corresponding to the passage of the tube between the bearing surfaces. In the rest of the manufacturing process, the sausage will receive its paper envelope then will be cut at the places marked by 24 in order to form the tobacco part of a cigarette. Note in FIG. 3A that the zones 23 with low density of tobacco all have the same length; this comes from the position of the blades around the core 30, it would also be possible to arrange the blades at different relative angles, so as to lengthen, respectively shorten, some of these areas.

La figure 3B représente une courbe montrant la variation de densité D du tabac le long du boudin de la figure 3A, on voit que les zones 23 sont à faible densité, valeur D0, et que les zones 21 sont à plus haute densité, valeur D1.FIG. 3B represents a curve showing the variation in density D of the tobacco along the rod of FIG. 3A, it can be seen that zones 23 are at low density, value D0, and that zones 21 are at higher density, value D1 .

La came 3 de la figure 4 est semblable à la précédente, si ce n'est que les pales 32, 33, 34 et 35 sont conformées chacune à titre d'exemple d'une manière différente, ayant donc un effet différent sur le boudin de tabac. Par exemple, la surface d'appui 32A de la pale 32 se trouve sur une enveloppe périphérique cylindrique de diamètre légèrement inférieur à celui de l'enveloppe périphérique cylindrique des surfaces d'appui 31A; si la came 3 avait toutes ses pales 32, 33, 34 et 35 conçues de cette manière, la compression, respectivement la densité, des zones 22 du boudin 20 aurait une densité plus élevée que D0 mais inférieure à D1, soit une valeur D2 comme représenté sur la figure 5A. A remarquer qu'il est aussi possible d'avoir une surface d'appui 32A située à un niveau plus élevé que celui des surfaces d'appui 31A, augmentant de ce fait la densité des zones 22 de manière à ce qu'elle soit plus élevée que celle des zones 21. Une autre variante possible est montrée par la pale 33 dont la surface d'appui 33A est au même niveau que les surfaces d'appui 31A mais dont la largeur d'appui est inférieure à la largeur de celle des surfaces 31A, respectivement du boudin 20; par une came équipée de pales de ce type, on obtient un boudin dont seule une région centrale de la largeur a une densité comme représenté à la figure 3B. La pales 34 de la figure 4 diffère de la pale 34 de la figure 2 par la longueur d'appui de la surface d'appui 34A, qui dans ce cas est relativement plus grande; on obtient ainsi une répartition des densités le long du boudin comme représenté sur la figure 5B, montant que les zones 22 sont nettement plus longues. Et enfin la pale 35 de la figure 4 montre une combinaison des variations précédentes, soit ayant une surface d'appui 35A située à un niveau inférieur de celui des surfaces d'appui 31A, une longueur d'appui supérieure et un largeur d'appui inférieure. La portion centrale du boudin aurait alors une distribution de densité comme représenté à la figure 5C. Il est évident que l'on ne rencontrera pas une came comme représentée à la figure 4 comportant une telle variété de moyens de compression, mais qui figure ici uniquement à titre d'exemple des moyens de compression ou d'augmentation de densité possibles.The cam 3 in FIG. 4 is similar to the previous one, except that the blades 32, 33, 34 and 35 are each shaped by way of example in a different way, therefore having a different effect on the flange tobacco. For example, the bearing surface 32A of the blade 32 is located on a cylindrical peripheral envelope with a diameter slightly smaller than that of the cylindrical peripheral envelope of the bearing surfaces 31A; if the cam 3 had all its blades 32, 33, 34 and 35 designed in this way, the compression, respectively the density, of the zones 22 of the flange 20 would have a density higher than D0 but lower than D1, ie a value D2 as shown in Figure 5A. Note that it is also possible to have a bearing surface 32A located at a higher level than that of the bearing surfaces 31A, thereby increasing the density of the zones 22 so that it is more higher than that of the zones 21. Another possible variant is shown by the blade 33 whose bearing surface 33A is at the same level as the bearing surfaces 31A but whose bearing width is less than the width of that of the surfaces 31A, respectively of the flange 20; by a cam fitted with blades of this type, a rod is obtained of which only a central region of the width has a density as shown in FIG. 3B. The blades 34 of FIG. 4 differs from the blade 34 of FIG. 2 by the support length of the support surface 34A, which in this case is relatively greater; a density distribution is thus obtained along the strand as shown in FIG. 5B, showing that the zones 22 are clearly longer. And finally, the blade 35 of FIG. 4 shows a combination of the preceding variations, either having a bearing surface 35A situated at a lower level than that of the bearing surfaces 31A, a longer bearing length and a bearing width lower. The central portion of the strand would then have a density distribution as shown in FIG. 5C. It is obvious that we will not encounter a cam as shown in FIG. 4 comprising such a variety of compression means, but which appears here only by way of example possible means of compression or increase in density.

Par contre on peut trouver un certain nombre de variantes des cames décrites ci-dessus; tout d'abord la came peut être dimensionnée pour effectuer un tour pour une longueur de cigarette ou alors plus de deux tours par longueur de cigarette, le diamètre de l'enveloppe cylindrique des surfaces d'appui, le nombre de pales et de surfaces d'appui ainsi que la vitesse de rotation de la came étant choisis en conséquence, de manière à ce que la vitesse périphérique des surfaces d'appui des pales corresponde à la vitesse de déplacement longitudinal du boudin. D'autre part, on peut aussi avoir des zones intermédiaires à densité augmentée 22 selon un nombre différent de deux comme sur les exemples décrits et représentés; le nombre de pales, respectivement de surfaces d'appui étant choisi en conséquence. Au cas où on a plus d'une zone intermédiaire à densité augmentée 22 sur la longueur d'une cigarette, il est aussi possible que le type de compression soit différent entre ces zones, par exemple si on a trois zones intermédiaires 22 sur une longueur de cigarette, sans compter les zones d'extrémités 21, on peut avoir deux zones latérales à densité élevée et de faible longueur, provoquées par des surfaces d'appui semblables aux surfaces 32A de la figure 2 entourant une zone centrale 22 à densité légèrement plus faible, de plus forte longueur mais ne s'étendant pas sur toute la largeur du boudin, provoquée par une surface d'appui semblable à la surface 35A de la figure 3.By cons we can find a number of variants of the cams described above; first of all the cam can be dimensioned to make one revolution for a length of cigarette or more than two turns per length of cigarette, the diameter of the cylindrical envelope of the bearing surfaces, the number of blades and surfaces d 'support as well as the speed of rotation of the cam being chosen accordingly, so that the peripheral speed of the bearing surfaces of the blades corresponds to the speed of longitudinal displacement of the rod. On the other hand, it is also possible to have intermediate zones with increased density 22 according to a number different from two as in the examples described and shown; the number of blades, respectively of bearing surfaces being chosen accordingly. If there is more than one intermediate zone with increased density 22 over the length of a cigarette, it is also possible that the type of compression is different between these zones, for example if there are three intermediate zones 22 over a length cigarette, without counting the end zones 21, there may be two lateral zones of high density and of short length, caused by bearing surfaces similar to the surfaces 32A of FIG. 2 surrounding a central zone 22 of slightly higher density weak, of greater length but not extending over the entire width of the rod, caused by a bearing surface similar to the surface 35A of FIG. 3.

Ainsi, un produit de l'industrie du tabac ou une cigarette composée en tout ou partie d'autres matières premières de l'industrie du tabac, que des brins de tabac longs, soit à partir de brins courts, de brins ou des côtes expansés, présente, si elle est fabriquée de la manière décrite ci-dessus, une ou plusieurs zones intermédiaires à plus haute densité, faisant que son remplissage et sa compacité mesurée sont meilleures que celles d'une cigarette ne comportant pas ces zones intermédiaires à plus haute densité. Un tel produit a un maintien équivalent et est aussi agréable à fumer qu'un produit habituel.Thus, a product of the tobacco industry or a cigarette composed in whole or in part of other raw materials of the tobacco industry, that long tobacco strands, either from short strands, strands or expanded ribs , present, if manufactured as described above, one or more intermediate zones with higher density, so that its filling and its measured compactness are better than those of a cigarette not having these intermediate zones with higher density. Such a product has an equivalent support and is as pleasant to smoke as a usual product.

Claims (13)

Procédé de fabrication d'un boudin (20) constitué de tabac et/ou d'autres matières premières de l'industrie du tabac (2), dont des portions (21) de la longueur sont périodiquement comprimées afin de former des zones d'extrémité de cigarettes à densité plus élevée, cette opération ayant lieu sur une machine de fabrication de cigarettes (1) lorsque le boudin est maintenu et transporté par une courroie poreuse (11), avant l'opération d'écrêtage (15) du boudin (20),
   caractérisé en ce qu'
   au moins une autre portion (22) de la longueur du boudin (20), disposée entre deux desdites portions (21) comprimées correspondant aux zones d'extrémités, est aussi comprimée, respectivement sa densité est augmentée.Method for manufacturing a rod (20) made of tobacco and / or other raw materials from the tobacco industry (2), portions of which (21) in length are periodically compressed in order to form zones of end of cigarettes with higher density, this operation taking place on a cigarette making machine (1) when the rod is held and transported by a porous belt (11), before the clipping operation (15) of the rod ( 20),
characterized in that
at least one other portion (22) of the length of the rod (20), disposed between two of said compressed portions (21) corresponding to the end zones, is also compressed, respectively its density is increased. Procédé selon la revendication 1, caractérisé en ce que la compression de ladite autre portion (22) de boudin est faite par le même dispositif (16;3) que celui effectuant la compression desdites portions (21) correspondant aux zones d'extrémités.Method according to claim 1, characterized in that the compression of said other portion (22) of the flange is made by the same device (16; 3) as that carrying out the compression of said portions (21) corresponding to the end zones. Dispositif permettant une compression périodique, respectivement une augmentation périodique de la densité de tabac d'un boudin de tabac et/ou d'autres matières premières de l'industrie du tabac (2), pour la réalisation d'un procédé selon la revendication 2, comportant une came (3) en rotation selon un axe perpendiculaire au boudin (20) et disposée au-dessous dudit boudin et comportant au moins une première pale (31) comportant une surface d'appui (31A) destinée à comprimer périodiquement des portions (21) du boudin afin de former les zones d'extrémité des cigarettes à densité augmentée,
   caractérisé en ce que
   ladite came comprend au moins une autre pale (32,33,34,35) comportant une surface d'appui (32A,33A,34A,35A) destinée à comprimer, respectivement à augmenter la densité de tabac d'une autre portion (22) du boudin.Device for periodic compression, respectively a periodic increase in the density of tobacco from a rod of tobacco and / or other raw materials of the tobacco industry (2), for carrying out a method according to claim 2 , comprising a cam (3) rotating along an axis perpendicular to the tube (20) and disposed below said tube and comprising at least one first blade (31) comprising a bearing surface (31A) intended to periodically compress portions (21) of the rod in order to form the end zones of the density cigarettes increased,
characterized in that
said cam comprises at least one other blade (32,33,34,35) comprising a bearing surface (32A, 33A, 34A, 35A) intended to compress, respectively to increase the density of tobacco of another portion (22 ) black pudding. Dispositif selon la revendication 3, caractérisé en ce que la longueur de la surface d'appui (32A,33A,34A,35A) de la ou desdites autres pales (32,33,34,35) est inférieure à la longueur de la surface d'appui (31A) de la ou desdites premières pales (31).Device according to claim 3, characterized in that the length of the bearing surface (32A, 33A, 34A, 35A) of the said other blade (s) (32,33,34,35) is less than the length of the surface support (31A) of said first blade or blades (31). Dispositif selon la revendication 4, caractérisé en ce que la hauteur relativement au boudin de la surface d'appui (32A,33A,34A,35A) de la ou desdites autres pales (32,33,34,35) est égale à la hauteur de la surface d'appui (31A) de la ou desdites premières pales (31).Device according to claim 4, characterized in that the height relative to the flange of the bearing surface (32A, 33A, 34A, 35A) of the said other blade (s) (32,33,34,35) is equal to the height of the bearing surface (31A) of the said first blade or blades (31). Dispositif selon la revendication 4, caractérisé en ce que la hauteur relativement au boudin de la surface d'appui (32A,33A,34A,35A) de la ou desdites autres pales (32,33,34,35) est différente de la hauteur de la surface d'appui (31A) de la ou desdites premières pales (31).Device according to claim 4, characterized in that the height relative to the flange of the bearing surface (32A, 33A, 34A, 35A) of the said other blade (s) (32,33,34,35) is different from the height of the bearing surface (31A) of the said first blade or blades (31). Dispositif selon l'une des revendications 3 à 6, caractérisé en ce que la largeur de la surface d'appui (32A,33A,34A,35A) de la ou desdites autres pales (32,33,34,35) est égale à la largeur de la surface d'appui (31A) de la ou desdites premières pales (31).Device according to one of Claims 3 to 6, characterized in that the width of the bearing surface (32A, 33A, 34A, 35A) of the said other blade (s) (32,33,34,35) is equal to the width of the bearing surface (31A) of the said first blade or blades (31). Dispositif selon l'une des revendications 3 à 6, caractérisé en ce que la largeur de la surface d'appui (32A,33A,34A,35A) de la ou desdites autres pales (32,33,34,35) est inférieure à la largeur de la surface d'appui (31A) de la ou desdites premières pales (31).Device according to one of claims 3 to 6, characterized in that the width of the bearing surface (32A, 33A, 34A, 35A) of the said other blade (s) (32,33,34,35) is less than the width of the bearing surface (31A) of the said first blade or blades (31). Produit de l'industrie du tabac, notamment cigarette, obtenue selon le procédé de l'une des revendications 1 à 2 et par un dispositif selon l'une des revendications 3 à 8, comportant des portions (21) de sa longueur comprimées à densité augmentée, correspondant à ses deux extrémités,
   caractérisé en ce qu'
   il comprend en sus au moins une autre portion (22) comprimée, respectivement à densité augmentée, disposée entre les deux extrémités comprimées.Product of the tobacco industry, in particular cigarette, obtained according to the method of one of claims 1 to 2 and by a device according to one of claims 3 to 8, comprising portions (21) of its length compressed to density increased, corresponding to its two ends,
characterized in that
it further comprises at least one other compressed portion (22), respectively with increased density, disposed between the two compressed ends. Produit de l'industrie du tabac selon la revendication 9, caractérisé en ce que le taux de com-pression, respectivement la densité de ladite ou desdites autres portions (22) est égal au taux de compression, respectivement la densité des deux extrémités (21).Tobacco industry product according to claim 9, characterized in that the compression ratio, respectively the density of said one or more other portions (22) is equal to the compression ratio, respectively the density of the two ends (21 ). Produit de l'industrie du tabac selon la revendication 9, caractérisé en ce que le taux de compression, respectivement la densité de ladite ou desdites autres portions (22) est différent du taux de compression, respectivement de la densité des deux extrémités (21).Tobacco product according to claim 9, characterized in that the compression ratio, respectively the density of said one or more other portions (22) is different from the compression ratio, respectively of the density of the two ends (21) . Produit de l'industrie du tabac selon l'une des revendications 10 ou 11, caractérisé en ce qu'il est constitué en tout ou partie de brins de tabac expansés et/ou de côtes de tabac expansées et/ou de brins de tabac courts.Tobacco industry product according to one of claims 10 or 11, characterized in that it is made wholly or partly of tobacco strands expanded and / or expanded tobacco ribs and / or short tobacco strands. Produit de l'industrie du tabac selon la revendication 12, caractérisé en ce que sa compressibilité mesurée est équivalente à la compressibilité mesurée d'une cigarette comportant une partie prépondérante de brins de tabac bruts non expansés et ne comportant pas ladite ou lesdites autres portions comprimées à densité augmentée.Tobacco industry product according to claim 12, characterized in that its measured compressibility is equivalent to the measured compressibility of a cigarette comprising a predominant part of unexpanded raw tobacco strands and not comprising said other compressed portion (s) with increased density.
EP93810432A 1993-06-16 1993-06-16 Method and device for forming products having variable tobacco density in the tobacco industry Expired - Lifetime EP0629354B1 (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
SG1996004274A SG46399A1 (en) 1993-06-16 1993-06-16 Process and device for manufacturing products of the tobacco industry having variable tobacco density
ES93810432T ES2109463T3 (en) 1993-06-16 1993-06-16 PROCEDURE AND DEVICE FOR THE MANUFACTURE OF PRODUCTS OF THE TOBACCO INDUSTRY WITH A VARIABLE TOBACCO DENSITY.
AT93810432T ATE158476T1 (en) 1993-06-16 1993-06-16 METHOD AND DEVICE FOR PRODUCING PRODUCTS WITH VARIABLE TOBACCO DENSITY IN THE TOBACCO INDUSTRY
DK93810432.0T DK0629354T3 (en) 1993-06-16 1993-06-16 Method and device for manufacturing variable tobacco density products in the tobacco industry
EP93810432A EP0629354B1 (en) 1993-06-16 1993-06-16 Method and device for forming products having variable tobacco density in the tobacco industry
DE69314165T DE69314165T2 (en) 1993-06-16 1993-06-16 Method and device for producing products with variable tobacco density in the tobacco industry
SK437-94A SK281668B6 (en) 1993-06-16 1994-04-15 Tobacco product, method and device for its producing
AU60649/94A AU673417B2 (en) 1993-06-16 1994-04-22 Process and device for manufacturing products of the tobacco industry having variable tobacco density
HU9401320A HU214185B (en) 1993-06-16 1994-05-05 Process and device for producing tobaccoproducts, and the such produced tobacco product
CZ941168A CZ283949B6 (en) 1993-06-16 1994-05-12 Tobacco industry article, process for producing a continuous tobacco rod and apparatus for making the same
CA002125111A CA2125111C (en) 1993-06-16 1994-06-03 Process and device for the fabrication of tobacco products with a variable density of tobacco
PL94303833A PL178897B1 (en) 1993-06-16 1994-06-14 Tobacco product of variable tobacco density and apparatus for making such tobacco products
US08/259,718 US5501233A (en) 1993-06-16 1994-06-14 Apparatus for varying tobacco rod density
JP15638994A JP3484229B2 (en) 1993-06-16 1994-06-16 Method and apparatus for producing products of the tobacco production industry having various tobacco densities
US08/575,108 US5586565A (en) 1993-06-16 1995-12-19 Method for varying tobacco rod density and tobacco rods with varying density produced thereby

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG1996004274A SG46399A1 (en) 1993-06-16 1993-06-16 Process and device for manufacturing products of the tobacco industry having variable tobacco density
EP93810432A EP0629354B1 (en) 1993-06-16 1993-06-16 Method and device for forming products having variable tobacco density in the tobacco industry

Publications (2)

Publication Number Publication Date
EP0629354A1 true EP0629354A1 (en) 1994-12-21
EP0629354B1 EP0629354B1 (en) 1997-09-24

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Application Number Title Priority Date Filing Date
EP93810432A Expired - Lifetime EP0629354B1 (en) 1993-06-16 1993-06-16 Method and device for forming products having variable tobacco density in the tobacco industry

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US (2) US5501233A (en)
EP (1) EP0629354B1 (en)
JP (1) JP3484229B2 (en)
AT (1) ATE158476T1 (en)
AU (1) AU673417B2 (en)
CA (1) CA2125111C (en)
CZ (1) CZ283949B6 (en)
DE (1) DE69314165T2 (en)
DK (1) DK0629354T3 (en)
ES (1) ES2109463T3 (en)
HU (1) HU214185B (en)
PL (1) PL178897B1 (en)
SG (1) SG46399A1 (en)
SK (1) SK281668B6 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29620975U1 (en) 1996-12-03 1997-02-13 Tabac Fab Reunies Sa Device for pre-leveling a stream of tobacco
US6330903B1 (en) * 1997-02-05 2001-12-18 Steve Weinreich Mechanism for constant balance with method for manufacture of variable pitch screw
US6360751B1 (en) 1999-12-01 2002-03-26 R. J. Reynolds Tobacco Company Asymmetrical trimmer disk apparatus
KR100587850B1 (en) * 2001-11-05 2006-06-12 니뽄 다바코 산교 가부시키가이샤 Low fire spreading cigarette
GB0624771D0 (en) * 2006-12-12 2007-01-17 British American Tobacco Co A smoking article and a method and apparatus for the manufacture of smoking articles

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GB948736A (en) * 1960-01-15 1964-02-05 Kurt Koerber Methods and apparatus for producing a tobacco stream or rod
GB2171887A (en) * 1985-03-09 1986-09-10 Koerber Ag Making tobacco rod, from several types of fibrous material
EP0244272A2 (en) * 1986-05-02 1987-11-04 R.J. Reynolds Tobacco Company Rod for a smoking article
EP0354874A1 (en) * 1988-08-10 1990-02-14 Fabriques De Tabac Reunies S.A. Tobacco trimmer and compression device

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CA528836A (en) * 1956-08-07 W. Molins Desmond Manufacture of cigarettes
GB689590A (en) * 1950-07-11 1953-04-01 Desmond Walter Molins Improvements in or relating to the manufacture of cigarettes
US3192931A (en) * 1957-12-16 1965-07-06 Decoufle Usines Tobacco-manipulating machines
DE3569871D1 (en) * 1985-03-22 1989-06-08 Tabac Fab Reunies Sa Control-device for the compressibility of tobacco-manufactory articles
DE69109944T2 (en) * 1990-06-26 1996-01-04 Tabac Fab Reunies Sa Control device of a tobacco stream before equalization.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB948736A (en) * 1960-01-15 1964-02-05 Kurt Koerber Methods and apparatus for producing a tobacco stream or rod
GB2171887A (en) * 1985-03-09 1986-09-10 Koerber Ag Making tobacco rod, from several types of fibrous material
EP0244272A2 (en) * 1986-05-02 1987-11-04 R.J. Reynolds Tobacco Company Rod for a smoking article
EP0354874A1 (en) * 1988-08-10 1990-02-14 Fabriques De Tabac Reunies S.A. Tobacco trimmer and compression device

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US5586565A (en) 1996-12-24
PL303833A1 (en) 1995-01-09
CA2125111C (en) 2004-04-13
SK43794A3 (en) 1995-01-12
US5501233A (en) 1996-03-26
CA2125111A1 (en) 1994-12-17
ATE158476T1 (en) 1997-10-15
ES2109463T3 (en) 1998-01-16
HUT70286A (en) 1995-09-28
DE69314165D1 (en) 1997-10-30
HU214185B (en) 1998-01-28
HU9401320D0 (en) 1994-08-29
SK281668B6 (en) 2001-06-11
DK0629354T3 (en) 1998-04-27
AU6064994A (en) 1994-12-22
AU673417B2 (en) 1996-11-07
EP0629354B1 (en) 1997-09-24
JP3484229B2 (en) 2004-01-06
SG46399A1 (en) 1998-02-20
CZ283949B6 (en) 1998-07-15
DE69314165T2 (en) 1998-03-19
JPH078250A (en) 1995-01-13
PL178897B1 (en) 2000-06-30
CZ116894A3 (en) 1995-01-18

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