EP1106087B1 - Méthode et appareil pour appliquer une additive préférablement liquide - Google Patents

Méthode et appareil pour appliquer une additive préférablement liquide Download PDF

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Publication number
EP1106087B1
EP1106087B1 EP00125867A EP00125867A EP1106087B1 EP 1106087 B1 EP1106087 B1 EP 1106087B1 EP 00125867 A EP00125867 A EP 00125867A EP 00125867 A EP00125867 A EP 00125867A EP 1106087 B1 EP1106087 B1 EP 1106087B1
Authority
EP
European Patent Office
Prior art keywords
tow
density
web
actuators
additive
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
EP00125867A
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German (de)
English (en)
Other versions
EP1106087A3 (fr
EP1106087A2 (fr
Inventor
Uwe Marsau
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.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau 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 Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP1106087A2 publication Critical patent/EP1106087A2/fr
Publication of EP1106087A3 publication Critical patent/EP1106087A3/fr
Application granted granted Critical
Publication of EP1106087B1 publication Critical patent/EP1106087B1/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
    • 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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0295—Process control means
    • 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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A24D3/022—Applying additives to filter materials with liquid additives, e.g. application of plasticisers

Definitions

  • the invention relates to a method for supplying a preferably liquid additive to a moving web of expanded filaments comprising filter material.
  • the invention also relates to a device for supplying a preferably liquid additive to a moving web of expanded filaments having filter material.
  • filter tow which is usually made of cellulose acetate, withdrawn from a supply as an endless strip and treated.
  • the filter tow consists of a web of loosely adhered threads that are pulled apart to form a broad and mostly planar web so that the threads are moved side by side and substantially parallel.
  • the spreading of the web takes place in a stretching zone, which is formed by two roller pairs revolving at different peripheral speeds, of which at least one roller is grooved on its surface.
  • the web is an additive that is usually liquid and z. B. from triacetin droplets, fed in finely divided form.
  • the droplets dissolve the threads, so that the threads are permanently arrested together, ie networked, after they are gathered together into a round strand and wrapping with a filter paper strip in a so-called filter rod machine.
  • a liquid additive an additive consisting of a finely divided powdered substance can also be used. Reprocessing devices of the prescribed type are described in US Pat. Nos. 5,060,664 and 4,511,420 and GB 2,265,296 A.
  • the amount of tow such as the center region of the web, may contain more material than the two edge regions, or vice versa. If then, as usual, always the same amount of additive supplied to each area of the web, then the ratio of filter tow of filter cloth is no longer constant in all areas, ie in an area with too much tow amount per unit area is then too little additive, z. As triacetin, in an area with too little tow amount per unit area is too much additive. This means that the homogeneity of the Triacetin concludeds across the width of the web is no longer guaranteed. However, what is desired is an at least approximately constant quantity ratio over the web width, ie transversely to the direction of the web movement.
  • the object underlying the invention is to improve the constancy of the ratio of additive to filter material.
  • this is achieved by detecting the density of the web transversely to its direction of movement and that the supply of the additive to the web is effected as a function of the density.
  • the density is detected in individual web areas, so that it can be determined where there are possibly density deviations or density variations.
  • the web density can be detected quickly and sensitively by radiation passing through the web, preferably light radiation, whose more or less strong attenuation detected by means of photoelectronic detectors is a measure of the more or less large density of the web material.
  • light waves can be used which radiate at least partially light in the infrared range to the individual track areas.
  • the web density can be detected in a further embodiment of the invention by the web passing through gas, preferably air.
  • the influence of air streams in the individual web areas due to the density of the web material can be detected by suitable pneumatic detectors.
  • the web density can be detected by electrical or electromagnetic fields passing through the web, preferably by radio frequency fields.
  • the influence of the fields in the individual web areas as a result of the density of the web material can be detected by suitable high-frequency detectors.
  • the supply of the additive to the web can be controlled by means of controllable actuators.
  • the respective actuators assigned to a single track area are controlled by density measurement signals which are formed from assigned track areas.
  • the actuators can be formed in a development of the invention arranged transversely to the direction of movement of the web valves. They can be controlled analog or digital depending on the density-dependent measurement signals.
  • valves as actuatorsing pumps can be used according to the invention, the pumping powers are controlled by the density-dependent measurement signals.
  • the device mentioned above is characterized by a measuring arrangement which detects the density of the web transversely to its direction of movement and which is connected to at least one actuator for the supply of the additive to the web.
  • the density measuring arrangement has a plurality of transducers, which are each associated with a region of the web and connected to an actuator.
  • Advantageous transducers according to the invention work with the radiation passing through the web, in particular with light whose spectrum can be at least partially in the infrared range. The more or less large attenuation of the light as a result of density fluctuations of the web material in the individual web areas can be detected by suitable detectors emitting photoelectronic density-dependent signals assigned to the web areas.
  • Another way of detecting the density in the individual web areas is according to an embodiment of the invention in the use of pneumatic the web areas respectively associated detectors that detect the web material passing through air currents and z. B. convert into electrical signals.
  • a further possibility of detecting the density in the individual web areas according to the invention consists in the use of high-frequency detectors which detect the web material by means of the track passing through high-frequency electrical or electromagnetic fields and convert it into electrical signals.
  • the transducers are preferably assigned downstream of the measuring point arranged actuators.
  • the actuators may be designed as controllable valves (control valves) or controllable metering pumps, which are arranged transversely to the direction of movement of the web.
  • the control of the individual web areas associated actuators is carried out in response to measurement signals that are output from the respective railway areas associated Meßwertgebem.
  • the change in the amount of an actuator supplied to a web area additive continuously, z. B. proportional to the density of Railway area vary.
  • a measurement signal can also be digitized; the individual z. B. binary digits of the digital signal corresponding control signals can then digitally operating actuators, z. B. valves, are supplied.
  • the advantages associated with the invention are that the delivery of the additive can be rapidly adjusted to fluctuations in the web in the direction transverse to the conveying direction of the web, so that the ratio of the amount of web material and additive in the individual web regions is at least approximately constant. Therefore, the ratio is then also at least approximately constant in the entire web.
  • an endless filter tow strip 3 As cellulose acetate, from a bale 4 on.
  • two air nozzles 7 and 8 for the propagation and loosening of the fabric of the filter tow strip serve.
  • the above-mentioned from Figure 1 components are omitted.
  • the pair of rollers 2 follow in the direction of movement of the strip 3, two further pairs of rollers 9 and 11, between which a supply device 12 for supplying an additive in the form of plasticizer, for. B.
  • triacetin is on the between the pairs of rollers 9 and 11 as a flat web extended threads guided filter tow strip.
  • one roll is advantageously grooved at its circumference (grooved), while the counter-roller can have a smooth surface made of elastic material.
  • All pairs of rollers 2, 9 and 11 are driven by an unillustrated main drive motor via belt drives, also not shown, such. As described in US Pat. No. 5,060,664. Instead of a main drive motor and separate drives can be provided.
  • the speed of the roller pair 2 is smaller than that of the roller pair 9, so that the roller pairs 2 and 9 form a stretching device for the filter tow strip.
  • the speed of the roller pair 2 is variable via a gear 14 whose translation can be changed by a controllable adjusting motor 16.
  • the speed ratio between the roller pairs 2 and 9 indicates the degree of stretching of the filter tow strip 3, ie the spread web formed by it.
  • the brake rollers 2 are driven. But they can also be designed as drag rollers, which act as a brake rollers due to their friction.
  • a measuring arrangement 18 for detecting the density values of the spread web 3. It has transducers 19a.. a web region 3a ... 3e assigned and arranged in a row transversely to the longitudinal extent and direction of movement of the web 3.
  • the transducers 19a ... 19e of the measured value arrangement 18 serve to measure the density values of the web material in the web areas 3a ... 3e separately in order to be able to detect inhomogeneities.
  • the transducers 19a ... 19e have light source 21a .... 21e and photoelectric detectors 22a ... 22e.
  • the 22e emits a signal which depends on the attenuation of the light falling on it. This light is thus dependent on the current density of the web strip, ie on its flow rate (amount per unit area). If the density in a web area changes or deviates from a predetermined value as a result of any influences in the supply of the filter tow strip 3 from the bale 4, the associated transmitter indicates this undesired operating state with its signal.
  • the signals from the transducers 19a... 19e are each supplied to a signal processing arrangement 23a... 23e, which process the individual signals, possibly with a desired value.
  • the output signals of the arrangements 23a... 23e reach actuators 24a. B. by changing their flow cross sections, a quantity control of the added additive (eg., Triacetin) allow.
  • Each sensor 19a ... 19e controls its associated actuator 24a ... 24e such that it reduces its passage cross-section and thus the supply of the additive from a reservoir 26 at a lower measured density, increases the passage cross-section and thus the supply at a greater density , In this way, the feed is adapted to the density ratios such that the same ratio of filter tow and additive is always maintained in a web region 3a... 3e.
  • the actuators 24a... 24e can be designed as controllable valves 27a... 27e whose flow rates / time unit are controlled by output signals of the transducers 19a... 19e.
  • the flow rates may be proportional to the output signals, but the dependency may also be predetermined by a function.
  • actuators can be used, for. B. controllable metering pumps.
  • the additive e.g. B. triacetin
  • the additive can be conveyed from the reservoir 26 in the usual way by means of one or more pumps, not shown, to the actuators 24 a ... 24 e.
  • non-illustrated groups of valves can be provided for each web area, which only have the operating states "on-off" and can be controlled by digitized output signals of the transducers 19a ... 19e are that the total flow rates correspond to the desired values specified by the output signals of the transducers.
  • an inlet funnel 29 of a known in the cigarette industry filter rod machine z. B. type KDF is supplied to the applicant.
  • FIG. 3 shows a variant of the invention with a measuring arrangement 18 using pneumatic transducers 35a... 35e for each area 3a... 3e of the filter tow path 3.
  • a track area 3a FIG. Figure 2
  • Compressed air from a compressed air source 36a is connected via a pipe 37a, a throttle assembly 38a and a nozzle 39a to the Track 3 passed, which interspersed.
  • the air influenced by the web passes via a channel 41a to a measured value converter 42a, which converts a pneumatic density of the air dependent on the web density into an electrical measuring signal.
  • This signal is amplified in an amplifier 40 then an actuator 24 a ( Figure 1), z. B. in the form of a control valve 27 a, which adjusts its passage cross section according to the measured density of the web portion 3 a, that is, the density measurement signal.
  • FIG. 4 shows a further variant of the invention with a measuring arrangement 18 using electronic measured value transmitters 45a... 45e for each area 3a... 3e of the filter tow path 3.
  • An electric or electromagnetic high-frequency source 46a supplies high-frequency pulses to an electrode assembly 47a, which generate an electric or electromagnetic field.
  • This field is influenced by the web 3, in particular by their density.
  • the change of a characteristic size of the high-frequency field is detected by an evaluation circuit 48a and their dependent on the train density output signal via an amplifier 49a an actuator 24a, ( Figure 1), z. B. in the form of a control valve 27 a, which has its passage cross-section corresponding to the measured density of the web portion 3 a, d. H. the density measurement signal.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (17)

  1. Procédé pour amener un additif, de préférence liquide, sur une nappe, soumise à déplacement, de matériau pour filtre comprenant des fils étalés, caractérisé en ce que la densité de la nappe est détectée dans une direction transversale à sa direction de déplacement et en ce que l'amenée de l'additif à la nappe se fait en fonction de la densité.
  2. Procédé selon la revendication 1, caractérisé en ce que la densité est détectée dans des régions individuelles de la nappe.
  3. Procédé selon la revendication 1 et/ou 2, caractérisé en ce que la densité est détectée au moyen d'un rayonnement, de préférence de lumière, traversant la nappe.
  4. Procédé selon la revendication 1 et/ou 2, caractérisé en ce que la densité est détectée au moyen de gaz, de préférence d'air, passant à travers la nappe.
  5. Procédé selon la revendication 1 et/ou 2, caractérisé en ce que la densité est détectée au moyen de champs électriques ou électromagnétiques traversant la nappe.
  6. Procédé selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'amenée de l'additif à la nappe s'effectue au moyen d'organes de réglage pouvant être commandés.
  7. Procédé selon la revendication 6, caractérisé en ce que les organes de réglage, associés chacun à une région individuelle de la nappe, sont commandés par des signaux de mesure de densité, qui sont formés à partir de régions associées de la nappe.
  8. Procédé selon la revendication 6 et/ou 7, caractérisé en ce que les organes de réglage sont formés par des vannes ou des pompes de dosage, disposées dans une direction transversale à la direction de déplacement de la nappe.
  9. Procédé selon la revendication 7 et/ou 8, caractérisé en ce que les organes de réglage sont commandés par voie analogique ou numérique.
  10. Dispositif pour amener un additif, de préférence liquide, sur une nappe, soumise à déplacement, de matériau pour filtre comprenant des fils étalés, caractérisé par un équipement de mesure (18) détectant la densité de la nappe (3) dans une direction transversale à sa direction de déplacement et qui est relié à au moins un organe de réglage (24) pour l'amenée de l'additif à la nappe.
  11. Dispositif selon la revendication 10, caractérisé par un équipement de mesure de densité (18) comprenant plusieurs capteurs de mesure (19a ... 19e, 35a ... 35e, 45a ... 45e), qui sont associés chacun à une région (3a ... 3e) de la nappe (3) et sont reliés chacun à un organe de réglage (24a ... 24e).
  12. Dispositif selon la revendication 10 et/ou 11, caractérisé par des capteurs de mesure (19a ... 19e) pour la détection d'un rayonnement, de préférence de lumière, traversant la nappe (3a ... 3e).
  13. Dispositif selon la revendication 10 et/ou 11, caractérisé par des capteurs de mesure (35a ... 35e) pour la détection de gaz, de préférence d'air, passant à travers la nappe (3a ... 3e).
  14. Dispositif selon la revendication 10 et/ou 11, caractérisé par des capteurs de mesure (45a ... 45e) pour la détection de champs électriques ou électromagnétiques traversant la nappe (3a ... 3e).
  15. Dispositif selon une ou plusieurs des revendications 10 à 14, caractérisé en ce que les capteurs de mesure sont associés à des organes de réglage (24a ... 24e) disposés en aval de la zone de mesure (18).
  16. Dispositif selon la revendication 10, 11 et 15, caractérisé en ce que les organes de réglage sont conçus sous la forme de vannes (27a ... 27e) ou de pompes de dosage, pouvant être commandées, qui sont disposées dans une direction transversale à la direction de déplacement de la nappe.
  17. Dispositif selon une ou plusieurs des revendications 10 à 16, caractérisé par des organes de réglage à commande continue ou par paliers.
EP00125867A 1999-12-08 2000-11-25 Méthode et appareil pour appliquer une additive préférablement liquide Expired - Lifetime EP1106087B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19959034 1999-12-08
DE19959034A DE19959034B4 (de) 1999-12-08 1999-12-08 Verfahren und Vorrichtung zum Zuführen eines vorzugsweise flüssigen Zusatzstoffes auf eine bewegte Bahn

Publications (3)

Publication Number Publication Date
EP1106087A2 EP1106087A2 (fr) 2001-06-13
EP1106087A3 EP1106087A3 (fr) 2005-05-04
EP1106087B1 true EP1106087B1 (fr) 2006-04-12

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EP00125867A Expired - Lifetime EP1106087B1 (fr) 1999-12-08 2000-11-25 Méthode et appareil pour appliquer une additive préférablement liquide

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EP (1) EP1106087B1 (fr)
AT (1) ATE322840T1 (fr)
DE (2) DE19959034B4 (fr)
PL (1) PL199485B1 (fr)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
DE10207357A1 (de) * 2002-02-21 2003-09-11 Rhodia Acetow Gmbh Vorrichtung zur gleichzeitigen, kontinuierlichen Messung und Regelung der Acetat- und Triacetinmenge in Filterstäben in der Zigarettenindustrie
ATE377361T1 (de) 2002-08-16 2007-11-15 Hauni Maschinenbau Ag Verfahren und einrichtung zum zuführen eines, vorzugsweise flüssigen, zusatzstoffes auf eine bewegte, ausgebreitete bahn aus filtermaterial
DE102004004688A1 (de) * 2004-01-29 2005-08-25 Hauni Maschinenbau Ag Separate Entspannung und Besprühung eines Filtertowstreifens
DE102004021773B4 (de) * 2004-04-30 2007-02-22 Hauni Maschinenbau Ag Abstreifelement und Besprüheinrichtung für Filtertow
DE102004051926A1 (de) * 2004-10-25 2006-04-27 Hauni Maschinenbau Ag Filterherstellungsverfahren sowie -vorrichtung
GB0426615D0 (en) 2004-12-03 2005-01-05 Filtrona Suisse Sa Tobacco smoke filter
DE102005015877A1 (de) * 2005-04-06 2006-10-12 Hauni Maschinenbau Ag Verfahren und Einrichtung zum Auftragen von Triacetin auf eine Filtermaterialbahn
DE102005038728B3 (de) * 2005-08-15 2007-03-29 Hauni Maschinenbau Ag Verfahren und Einrichtung zur Zufuhr eines Zusatzstoffes auf eine Filtermaterialbahn
ITBO20060601A1 (it) * 2006-08-11 2006-11-10 Gd Spa Dispositivo per il trattamento di materiale filtrante per articoli da fumo.
DE102008057457A1 (de) * 2008-11-14 2010-05-20 Hauni Maschinenbau Aktiengesellschaft Vorrichtung zum Transport eines Filtertowstreifens
DE102009016500B4 (de) * 2009-04-08 2024-02-08 Körber Technologies Gmbh Verfahren zum Betrieb einer Filterstrangmaschine und Filterstrangmaschine
MY182844A (en) * 2014-07-18 2021-02-05 Japan Tobacco Inc Manufacturing apparatus and manufacturing method for cigarette filter
DE102015108968A1 (de) 2015-06-08 2016-12-08 Hauni Maschinenbau Gmbh Verfahren, Auftrageinrichtung und Maschine zur Herstellung eines Filterstrangs der Tabak verarbeitenden Industrie

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DE2017360C3 (de) * 1970-04-11 1979-05-23 Hauni-Werke Koerber & Co Kg, 2050 Hamburg Verfahren und Maschine zum Herstellen von stabförmigen Artikeln der tabakverarbeitenden Industrie
DE2814605A1 (de) * 1978-04-05 1979-10-18 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum ausbreiten einer bewegten luftdurchlaessigen gewebebahn
US4511420A (en) * 1980-12-16 1985-04-16 Molins, Ltd. Continuous rod manufacture
IT1235463B (it) * 1986-11-28 1992-07-30 Hauni Werke Koerber & Co Kg Procedimento e dispositivo per produrre un filone di fibre dell'industria di lavorazione del tabacco
DE4109603A1 (de) * 1991-03-23 1992-09-24 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum herstellen von filterstaeben fuer zigaretten
DE4209606A1 (de) * 1992-03-25 1993-09-30 Hauni Werke Koerber & Co Kg Verfahren und Vorrichtung zum Behandeln mindestens einer Bahn von Fäden aufweisenden Filtermaterial für Zigarettenfilter
US5733234A (en) * 1993-07-14 1998-03-31 Rhone-Poulenc Rhodia Aktiengesellschaft Method and apparatus for producing fiber skeins
DE19605618A1 (de) * 1996-02-15 1997-08-21 Hauni Maschinenbau Ag Verfahren und Vorrichtung zum Bestimmen der Dichte eines Faserstrangs der tabakverarbeitenden Industrie

Also Published As

Publication number Publication date
PL344284A1 (en) 2001-06-18
EP1106087A3 (fr) 2005-05-04
ATE322840T1 (de) 2006-04-15
DE50012563D1 (de) 2006-05-24
EP1106087A2 (fr) 2001-06-13
DE19959034A1 (de) 2001-06-13
PL199485B1 (pl) 2008-09-30
DE19959034B4 (de) 2008-01-17

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