EP0284640B1 - Dispositif pour déterminer en continu deux propriétés physiques des éléments d'un article fumable - Google Patents

Dispositif pour déterminer en continu deux propriétés physiques des éléments d'un article fumable Download PDF

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Publication number
EP0284640B1
EP0284640B1 EP87104882A EP87104882A EP0284640B1 EP 0284640 B1 EP0284640 B1 EP 0284640B1 EP 87104882 A EP87104882 A EP 87104882A EP 87104882 A EP87104882 A EP 87104882A EP 0284640 B1 EP0284640 B1 EP 0284640B1
Authority
EP
European Patent Office
Prior art keywords
rod
opening
format
format finger
gas stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87104882A
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German (de)
English (en)
Other versions
EP0284640A1 (fr
Inventor
Hartmut Dr. Federle
Meinhard Dipl.-Ing. Meyer
Jörn Dr. Ing. Ulrich
Friedrich Dipl.-Ing. Walther
Friedrich Dr. Weinhold
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.)
British American Tobacco Germany GmbH
Original Assignee
British American Tobacco Germany GmbH
BAT Cigarettenfabriken GmbH
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 British American Tobacco Germany GmbH, BAT Cigarettenfabriken GmbH filed Critical British American Tobacco Germany GmbH
Priority to EP87104882A priority Critical patent/EP0284640B1/fr
Priority to DE8787104882T priority patent/DE3779903D1/de
Priority to CA000562028A priority patent/CA1325344C/fr
Priority to US07/174,913 priority patent/US4865051A/en
Publication of EP0284640A1 publication Critical patent/EP0284640A1/fr
Application granted granted Critical
Publication of EP0284640B1 publication Critical patent/EP0284640B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
    • A24C5/34—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
    • 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
    • A24C5/1871—Devices for regulating the tobacco quantity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/904—Pneumatic means for sensing condition or characteristic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/906—Sensing condition or characteristic of continuous tobacco rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/908—Sensing unique characteristic or specific condition of finished product

Definitions

  • the invention relates to a device for the continuous determination of two physical properties of the constituents of a smokable article from the mechanical properties of a strand of tobacco or filter fibers during the production of this strand of the type specified in the preamble of claim 1.
  • Quality control in cigarette production is paying increasing attention to the hardness of cigarettes and filters, since it is relatively easy to determine whether a smokable item, for example a cigarette, is sufficiently filled or not from a hardness measurement.
  • a smokable item for example a cigarette
  • the inadequate filling of smokable items is a frequent reason for complaints.
  • US Pat. No. 3,411,513 also discloses a method in which a moving, finished, tobacco rod wrapped in paper is deformed by an air stream and the associated tracking of the nozzle is detected.
  • the movement of the nozzle that occurs is related to the filling power of the tobacco and thus the hardness of the cigarette.
  • the statements obtained here are influenced by fluctuations in diameter and the porosity of the cigarette paper, so that there is only a few cases in which there is an exact correlation to the static measurement of hardness by determining the depth of penetration, as is known from the drawn article.
  • DE-OS 2 241 774 shows a device in which a force transducer, generally a strain gauge, is provided, which detects the deformation of the support bridge for the format finger.
  • a force transducer generally a strain gauge
  • DE-OS 2 457 141 shows a device which, at various points, detects the vertical and horizontal forces which the tobacco rod exerts on its guidance and in particular on the format finger. For example, the width of the gap between the front end of the format finger and a transducer, that is, the deflection of the front end of the format finger, is detected.
  • DE-PS 3 204 342 discloses a device for measuring the compressibility of tobacco within a tobacco stream transported on a continuously driven conveyor, in which the tobacco stream is acted upon by at least two rollers one behind the other in the conveying direction; in relation to the conveying direction, the roller downstream downstream in each case exerts a stronger pressure effect than the roller downstream upstream;
  • the rollers are assigned sensors for determining the size of the deformations of the tobacco flow caused by the rollers, the outputs of which are linked to an evaluation circuit for forming a function which gives a measure of the compressibility of the tobacco from the variables mentioned.
  • the compressibility is determined by comparison measurement at two different locations along the processing path of the strand, at which the strand has different heights or is loaded by different compressive forces.
  • the measurement result correlates linearly with the hardness of the finished cigarette only when the transducer the deformation of the format finger is detected at the point at which the diameter of the strand of tobacco fibers corresponds approximately to the tobacco diameter of the finished, smokable article, as is known from DE-OS 33 06 543.8 and, although this is not expressly mentioned there, becomes one essential part in the end result is probably also realized in the device according to DE-OS 2 457 141.
  • the draw resistance of the cigarette is of great importance in the quality control of cigarettes, since it can be determined in a relatively simple manner from a draw resistance measurement whether a cigarette enables the desired draw volume.
  • the train volume A cigarette is in turn determined on the one hand by the smoking habits of the smoker and on the other hand by its draw resistance, which is made up of the draw resistance of the tobacco rod and the filter.
  • the draw resistance In order to ensure that the smoker of a certain branded cigarette always has the same puff volume, the draw resistance must be kept at a fixed value if the subjective parameter, namely the smoking habits of this smoker, is kept constant.
  • a device for measuring the tensile resistance of a strand of filter fibers is known, with which the pressure drop on the strand is detected in an area where the strand has almost reached its final cross-section.
  • the aim is to record the pressure drop at a point behind the smallest cross-section of the strand of filter material, because the filter fibers have reached their final position there and can therefore no longer be displaced by the air passing through the strand.
  • the main compression of the strand is carried out by means of a wheel, while the shaping and subsequent compression are carried out by a format finger which is arranged behind the wheel in the direction of movement of the strand.
  • GB-OS 2 153 654 discloses a device for the continuous determination of the hardness of a smokable article, in which the temperature of the format finger is determined at the location of the format finger at which the diameter of the strand approximately corresponds to the diameter of the finished tobacco rod of the smokable one Corresponds to the article; the temperature at this point is a reproducible measure of the hardness of the smokable article made from this strand.
  • a device for the continuous measurement of the tensile resistance of a strand of tobacco fibers of the type specified emerges from DE-AS 1 166 069 and has a source for a gas stream passing through the strand, a format finger of a strand machine for the production of smokable articles with at least one opening for the application of the gas flow to the line and a transducer for determining the pressure loss of the gas flow occurring at the line at a constant gas volume.
  • the continuous measurement of the tensile resistance of a strand of tobacco fibers is possible; the value determined in this way is also specific to the strand of tobacco fibers, so that the tensile resistance determined in this way can be used for process control.
  • the tensile resistance of the rod of tobacco fibers determined in this way does not correlate with the tensile resistance of the finished cigarette, which represents a very important product parameter because it is an essential characteristic for a specific cigarette type.
  • the invention is therefore based on the object of providing a device for the continuous determination of the two essential physical properties, namely the hardness and the tensile resistance, of a smokable article from the mechanical properties of a strand of tobacco or filter fibers during the production of these smokable articles of the type specified create, in which the disadvantages mentioned above do not occur.
  • a device is to be proposed whose measured values for the hardness on the one hand and the tensile resistance on the other hand correlate in a precisely defined manner with the hardness or tensile resistance of the finished smokable articles produced from the tobacco or filter rod.
  • the advantage achieved with the invention is based on the fact that two measured values are obtained in a simple manner that correlate very precisely with the hardness or the tensile resistance of the finished smokable article, in particular a cigarette, so that these measured values deviate from a predetermined desired value -Pair represents an indication of manufacturing problems that can be remedied immediately by means of a corresponding regulation.
  • the mode of operation should be based on the example of continuous
  • the tobacco stream coming from a distributor is conveyed in an air stream to a perforated suction belt, which creates a continuous tobacco rod.
  • this tobacco rod is brought to its target weight on so-called “trimmer disks” and conveyed to a transfer point using the suction belt.
  • the tobacco rod, which at this point is still undensified is taken over by a format tape, which is covered with the cigarette paper.
  • the tobacco rod which has an approximately circular cross section, is continuously compressed from the present diameter of approximately 11 mm to a diameter of approximately 6.8 mm. This compression of the tobacco rod beyond the diameter of the finished cigarette, which is approximately 8 mm, is necessary for the wrapping of the tobacco rod with the cigarette paper beginning at the end of the format finger.
  • This wrapping of the tobacco rod with the cigarette paper takes place by the lateral erection of the format tape, one end of the cigarette paper protruding from this format device and being provided with a layer of glue. In a subsequent heated device, the glued end of the cigarette paper is folded over and glued.
  • the endless strand thus produced, coated with the cigarette paper passes through a diameter testing device and is then cut to the desired cigarette length.
  • the diameter of the compacted strand is approximately 7.85 mm, which is the same as the diameter of the finished cigarette, but without the double thickness of the cigarette paper.
  • the pressure drop of the cigarettes can be calculated from the pressure drop in the usual way, and this is the result of further processing Tobacco rod are produced.
  • the flow volume is extremely constant, as is necessary for the exact determination of the pressure loss on the line .
  • the nozzle with a critical flow is able to deliver the constant gas volume regardless of the back pressure that may arise.
  • format fingers made of hardened steel are not suitable as a "sensor base" because, on the one hand, the desired design of the opening (s) to be explained becomes problematic, and on the other hand, these format fingers do not withstand the loads that occur.
  • the formation of a plurality of openings in the format finger leads to a reduction in the mechanical strength, so that format fingers made of hard metal are used, that is to say alloys of high hardness based on carbides, produced by pressing and sintering, as sold, for example, under the trademark "WIDIA" will.
  • Pressure transducers are used which are suitable for the measurement of gaseous media and have a suitable measuring range.
  • the pressure transducer should be arranged axially to the direction of inflow of the gas flow into the line, so that even short-term density fluctuations of the line, which lead to a change in the pressure drop and generate a pressure wave in the gas flow, can be detected and taken into account.
  • the pressure sensor should be arranged perpendicular to the direction of flow of the gas flow into the strand. It is also possible to set up the pressure sensor outside of the actual machine area.
  • the shape, size and number of openings in the format finger through which the gas flow is applied to the line depend on the design of the format finger and on the properties of the line, in particular on the difference between the tobacco line and the filter line.
  • the edges of the opening do not hinder the smooth, shock-free movement of the strand and also have a favorable influence on the inflow of gas into the strand. This can be achieved if the entry area of the opening in the format finger is designed like a diffuser or a nozzle, in particular of the Venturi or Laval nozzle type.
  • a further influence on the inflow behavior is possible via the corresponding selection of the direction of entry of the gas flow into the line.
  • the flow volume that occurs depends on the one hand on the area of the opening (s) and on the other hand on the properties of the tobacco rod. A small increase in the flow volume can therefore lead to a large drop in pressure. This can be done by appropriate Setting the flow volume Gain pressure drop values that are very well suited for signal amplification, as is sometimes required for the control of the process sequence.
  • the hardness sensor is arranged, which is formed by a temperature sensor, as is already known in principle from DE-PS 3 404 635.
  • a temperature sensor as is already known in principle from DE-PS 3 404 635.
  • FIG. 1 shows the part of a conventional cigarette machine in which the approximately cylindrical tobacco rod, which is transported in the direction of the arrow and has a diameter of approximately 11 mm, is compressed to a diameter of approximately 6.8 mm. It is on a format tape 10 lying, transported tobacco rod compressed by a format finger 12, which has approximately the shape of a hollow half-cylinder, to the desired diameter. As can be seen in Figure 1, the format finger 12 is attached to a vertically arranged, relatively rigid plate 14, which in turn is attached to a horizontal support 16.
  • Figures 2 and 3 show an embodiment of a device for the continuous measurement of the tensile resistance and the hardness of this tobacco rod, which is provided on the format finger 12; if one assumes that the tobacco rod has a diameter of 11 mm at the inlet into the format finger 12 and a diameter of 6.8 mm at the outlet, then there is a distance between the format (not shown) and at the location indicated in FIG Format finger 12, which is 7.85 mm. Due to the lateral limitation of the tobacco rod by the format tape 10 covered with cigarette paper and the format finger 12, a plug density results for this location which corresponds to the plug density of the finished cigarette. Such a finished cigarette has a diameter of the tobacco rod of 7.85 mm and a paper thickness of approximately 0.1 mm.
  • the format finger If one now forms the format finger at the point at which the tobacco rod has a diameter of 7.85 mm, it has a through opening 18 through which a gas stream of constant volume flows in the direction of the arrow from a source 17 of constant pressure via a Hose or Pipeline 20 is supplied with a critical nozzle 19, the flow resistance of the strand results in a pressure drop in the gas stream, which can be determined by a conventional pressure sensor P connected to the hose or pipeline 20.
  • the hose or pipeline 20 for feeding the gas flow into the opening 18 of the format finger 12 is located in the front part of the rigid plate 14 and runs in a slight deviation from the vertical on the format finger 12 and thus on the transported tobacco rod, namely at an angle of approximately 80 to 83 ° to the tobacco rod.
  • the opening 18 can have a circular or elliptical shape as required.
  • the opening 18 should be designed so that on the one hand it does not affect the inflow of the gas flow and also does not interfere with the transport of the tobacco rod. In particular, it is expedient to round off the lower channels of the opening 18 lying on the tobacco rod so as not to disturb the proper transport of the tobacco rod.
  • the entrance area of the opening should be designed similar to a diffuser or a nozzle, in particular of the Venturi or Laval nozzle type.
  • the area of the opening 18 in the format finger 12 should have a size of 0.5 to 12.0 mm2, in particular 0.6 to 2.0 mm2, since the pressure drop deviates greatly with smaller opening areas. Larger areas can lead to disturbances in the inlet area. Good results were achieved with an area of 0.8 mm2.
  • the constant volume of the gas flow can be varied in the range from 4 to 600 ml / s, in particular between 8 and 140 ml / s, without there being any noticeable deviations from the desired correlation with the static tensile resistance measurement.
  • a plurality of openings 18 can be provided in the format finger 12, which makes it possible, for example, to form an average value for the tensile resistance.
  • the tensile resistance can also be determined from the variable volume with a constant pressure drop on the line, the source setting the volume flow so that the pressure drop is kept at a predetermined value.
  • the pressure sensor P must then be replaced by a volume meter.
  • a temperature sensor 22 is attached to the format finger 12, namely a thermocouple, a semiconductor temperature sensor or a resistance thermometer.
  • the temperature sensor 22 is also attached approximately at the location of the format finger 12 at which the diameter of the tobacco rod corresponds to that of the finished cigarette.
  • the format finger is provided at this point with a blind hole 24 which runs from the top of the format finger 12 down to the vicinity of its lower surface, the remaining wall thickness being approximately 0.1 mm.
  • the actual measuring point of the temperature sensor 22 is inserted into this blind bore 24.
  • Fig. 3 shows a plan view of this measuring arrangement with the blind bore 24, the temperature sensor 22, the hose or pipe with the through opening 18 in the format finger 12 and the pressure sensor P.
  • the output signals of the two sensors 22, P can be used directly for the regulation of the cigarette production, in particular for the adjustment of the trimming disks as a function of the determined actual values and comparison with predetermined target values.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Claims (18)

  1. Dipositif pour la détermination continue de deux propriétés physiques des constituants d'un produit à fumer, à partir des propriétés mécaniques d'un rouleau de fibres de tabac ou de filtre au cours de la fabrication de ce rouleau, comportant
    a) une source de gaz (17) pour le flux de gaz qui traverse le rouleau,
    b) un doigt de formatage (12) d'une machine à former les rouleaux pour la fabrication d'articles fumables, avec au moins un orifice (18) pour alimenter le rouleau en gaz,
    c) un capteur pour déterminer la perte de charge du jet de gaz au niveau du rouleau pour un volume de gaz constant,
    caractérisé par les éléments caractéristiques suivants :
    d) le doigt de formatage (12) fabriqué en métal dur porte l'orifice (18) ou chaque orifice de ce genre à un premier endroit où le diamètre du rouleau correspond environ au diamètre du rouleau de tabac terminé du produit à fumer;
    e) l'orifice (18) ou chaque orifice de ce genre est raccordé à une source de gaz (17) par un injecteur (19) traversé à vitesse critique et situé dans une conduite (20);
    f) à un second endroit du doigt de formatage (12), un capteur (22) est placé dans un trou borgne (24) pour la température du doigt de formatage (12) provoquée par la chaleur de frottement dans le cas d'une vitesse de déplacement prédéterminée du rouleau.
  2. Dispositif suivant la revendication 1, caractérisé en ce que l'orifice (18) a une forme circulaire ou ellipsoïdale.
  3. Dispositif suivant l'une quelconque des revendications 1 ou 2, caractérisé en ce que les bords de l'orifice (18) sont conformés de manière à favoriser l'écoulement.
  4. Dispositif suivant la revendication 3, caractérisé en ce que la zone d'entrée de l'orifice (18) est réalisée sous forme de diffuseur ou d'injecteur, en particulier d'un injecteur de type Venturi ou Laval.
  5. Dispositif suivant l'une quelconque des revendications 3 ou 4, caractérisé en ce que les bords de l'orifice (18) en contact avec le rouleau sont fraisés.
  6. Dispositif suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que l'orifice (18) est configuré de manière à ce que le flux de gaz traversant l'orifice (18) touche le rouleau sous un angle de 70 à 87°, en particulier de 78 à 85°.
  7. Dispositif suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que la perte de charge du flux de gaz de volume constant est captée sur le rouleau au niveau de la conduite (20) d'amenée du flux de gaz.
  8. Dispositif suivant la revendication 7, caractérisé en ce que le capteur de pression (P) est placé dans la conduite (20) dans l'axe de pénétration du flux de gaz dans le rouleau.
  9. Dispositif suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que le doigt de formatage (12) présente plusieurs orifices (18) alimentés en flux de gaz de volumes différents.
  10. Dispositif suivant la revendication 9, caractérisé en ce que les orifices (18) ont des formes différentes.
  11. Dispositif suivant l'une quelconque des revendications 1 à 10, caractérisé en ce que la surface d'un orifice (18) dans le doigt de formatage (12) est de 0,5 à 12 mm², en particulier de 0,6 à 2,0 mm².
  12. Dispositif suivant l'une quelconque des revendications 1 à 11, caractérisé en ce que lors de la mesure de la perte de charge, le volume constant du flux de gaz est de 4 à 600 ml/s, en particulier de 8 à 140 ml/s.
  13. Dispositif suivant l'une quelconque des revendications 1 à 12, caractérisé en ce qu'un thermomètre à résistance électrique est utilisé comme capteur de température (22).
  14. Dispositif suivant l'une quelconque des revendications 1 à 12, caractérisé en ce qu'un thermocouple est utilisé comme capteur de température (22).
  15. Dispositif suivant l'une quelconque des revendications 1 à 12, caractérisé en ce qu'une sonde de température à semi-conducteurs est utilisée comme capteur de température (22).
  16. Dispositif suivant l'une quelconque des revendications 1 à 15, comportant un capteur de mesure de la force exercée par le rouleau sur le doigt de formatage en un endroit où le diamètre du rouleau correspond environ au diamètre des portions de rouleau terminées, caractérisé en ce que le capteur de température (22) se trouve à un endroit situé dans cette zone du doigt de formatage (12).
  17. Dispositif suivant l'une quelconque des revendications 1 à 16, caractérisé en ce que le trou borgne (24) part de la face supérieure du doigt de formatage (12) en direction du rouleau de fibres de tabac.
  18. Dispositif suivant la revendication 16, caractérisé en ce que la distance séparant l'extrémité du trou borgne (24) de la face inférieure du doigt de formatage (12) est la plus petite possible.
EP87104882A 1987-04-02 1987-04-02 Dispositif pour déterminer en continu deux propriétés physiques des éléments d'un article fumable Expired - Lifetime EP0284640B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP87104882A EP0284640B1 (fr) 1987-04-02 1987-04-02 Dispositif pour déterminer en continu deux propriétés physiques des éléments d'un article fumable
DE8787104882T DE3779903D1 (de) 1987-04-02 1987-04-02 Vorrichtung zur kontinuierlichen bestimmung von zwei physikalischen eigenschaften der bestandteile eines rauchbaren artikels.
CA000562028A CA1325344C (fr) 1987-04-02 1988-03-21 Appareil servant a determiner en continu les proprietes physiques des elements constituants d'articles de fumeurs
US07/174,913 US4865051A (en) 1987-04-02 1988-03-29 Apparatus for the continuous determination of two physical properties of the constituents of a smokable article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87104882A EP0284640B1 (fr) 1987-04-02 1987-04-02 Dispositif pour déterminer en continu deux propriétés physiques des éléments d'un article fumable

Publications (2)

Publication Number Publication Date
EP0284640A1 EP0284640A1 (fr) 1988-10-05
EP0284640B1 true EP0284640B1 (fr) 1992-06-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87104882A Expired - Lifetime EP0284640B1 (fr) 1987-04-02 1987-04-02 Dispositif pour déterminer en continu deux propriétés physiques des éléments d'un article fumable

Country Status (4)

Country Link
US (1) US4865051A (fr)
EP (1) EP0284640B1 (fr)
CA (1) CA1325344C (fr)
DE (1) DE3779903D1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2021185646A1 (fr) 2020-03-18 2021-09-23 Hauni Maschinenbau Gmbh Dispositif et procédé de production d'une tige de l'industrie de transformation du tabac

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GB9124411D0 (en) * 1991-11-16 1992-01-08 British American Tobacco Co Improvements relating to measuring cigarette pressure drop
EP1023845B1 (fr) * 1998-07-22 2004-06-02 Japan Tobacco Inc. Dispositif de controle d'un echantillon en forme de batonnet

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021185646A1 (fr) 2020-03-18 2021-09-23 Hauni Maschinenbau Gmbh Dispositif et procédé de production d'une tige de l'industrie de transformation du tabac
DE102020107421A1 (de) 2020-03-18 2021-09-23 Hauni Maschinenbau Gmbh Vorrichtung und Verfahren zum Herstellen eines Strangs der Tabak verarbeitenden Industrie

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US4865051A (en) 1989-09-12
EP0284640A1 (fr) 1988-10-05
CA1325344C (fr) 1993-12-21
DE3779903D1 (de) 1992-07-23

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