EP0124179A1 - Procédé et installation pour la fabrication d'un filtre de cigarette - Google Patents

Procédé et installation pour la fabrication d'un filtre de cigarette Download PDF

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Publication number
EP0124179A1
EP0124179A1 EP84200598A EP84200598A EP0124179A1 EP 0124179 A1 EP0124179 A1 EP 0124179A1 EP 84200598 A EP84200598 A EP 84200598A EP 84200598 A EP84200598 A EP 84200598A EP 0124179 A1 EP0124179 A1 EP 0124179A1
Authority
EP
European Patent Office
Prior art keywords
tipping wrapper
layer
filter
threads
filling means
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.)
Ceased
Application number
EP84200598A
Other languages
German (de)
English (en)
Inventor
Dirk Wilhelmus Van Vlodrop
Johannes Hermanus Maria Rasing
Johannes Hendrikus Hoge
Johannes Van Der Heide
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.)
Rothmans Manufacturing The Netherlands BV
TURMAC TOBACCO CO
Original Assignee
Rothmans Manufacturing The Netherlands BV
TURMAC TOBACCO CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rothmans Manufacturing The Netherlands BV, TURMAC TOBACCO CO filed Critical Rothmans Manufacturing The Netherlands BV
Publication of EP0124179A1 publication Critical patent/EP0124179A1/fr
Ceased 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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • 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

Definitions

  • the invention relates to a process and an equipment to manufacture a cigarette filter, which filter comprises a rod of cellulose acetate or other suitable filter rod material surrounded by an air-impervious layer such as a filter wrap material and by a tipping wrapper which is entirely or partly perforated or porous, a layer of an open structure material being applied between the air-impervious layer and the tipping wrapper, from which open structure layer one end to be connected with the tobacco column of a cigarette is closed.
  • a filter of the above described type is known from Dutch patent applications 8201808 and 8202896 of applicant, which patent applications have been laid open to public inspection.
  • the aim of the invention is to improve this and to provide a process and equipment belonging thereto,which enable the manufacture of a cigarette filter of the above mentioned type at a high production rate and at relatively low costs.
  • the driving of the size strip is connected to the driving of the perforation device by a variable transmission.
  • the transmission ratio of the variable transmission can be determined by a control unit to which an input signal is fed which is dependent on the length of the path of the tipping wrapper between the perforation device and the strand cutter, and an input signal which provides information about the number of revolutions of the perforation device.
  • the output signal of the control unit is a frequency modulated signal.
  • An equipment for bringing into practice the above described processes for instance comprises:
  • the electronic control unit receives a first input signal from a tacho generator, which first input signal is a reference for the number of revolutions of the capstan roller, and a second input signal of a scanning arm, which second input signal is a reference for the length of the path of the tipping wrapper between the perforation device and the strand cutter, whereas the electronic control unit processes the input signals and converts them into a frequency modulated output signal which adjusts the number of revolutions of a step motor of a satellite carrier of a epicyclic driving of the size strip drum belonging to the transmission.
  • the filling means supply unit can be provided with an adhesive roller having slits.
  • a filter strand 1 is shown on a somewhat larger scale than in practice, the filter strand comprising a rod 2 of cellulose acetate or other suitable filter rod material surrounded by an air-impervious layer 3, such as filter wrapping material.
  • Said threads are sticked to a tipping wrapper 6 beforehand, which tipping wrapper is provided with perforations.
  • the perforation have an axial distance "a" and two filling means layers 7 are positioned between every other perforation row.
  • FIG 2 a filter cigarette 8 is shown, on a somewhat larger scale than in figure 1, from which it appears that one filling means layer 7 of figure 1 forms the sealing of the open structure layer at the location of the connection to a tobacco column 9 which is surrounded by normal cigarette wrapper.10.
  • the equipment for bringing the invented process into practice comprises a supply unit, for instance a paper bobine for a continuous strip 6 of tipping wrapper, supplied to a perforation device 14 by a guiding means 12 and a guiding roll 13,
  • the perforation device 14 comprises a perforating roller 15 and a capstan roller 16.
  • the perforating roller 15 has needles or punching pins 17 and the capstan roller 16 has receiving cavities 18 which can receive the needles or pins 17 during opposite rotation of the rollers 15 and 16.
  • suction holes are provided as well to suck the tipping wrapper in tight fit to the roller 16 by subatmospheric pressure, so that no slip can occur.
  • an elevating roller 20 is provided with its opposite end on the pivotable end of an arm 19, which elevating roller guides the tipping wrapper to a filling means supply unit 21, comprising a store container 22 for liquid or paste-like filling means, in which a roll 23 having axial slots; rotates, transferring the filling means 24 to a adhesive roller 25.
  • the radial distance between the slots is alternatingly small and large, so that the desired succession of filling means layers 7 with respect to the perforations 5 is obtained.
  • the pressurized air cylinder 26 and the tumbler lever 27 serve to remove the store container 22 and clean it and also to press the roll 23 and the roller 25 against each other with the correct pressure.
  • the filling means can be a PVA - adhesive (poly vinyl acetate adhesive).
  • anadhesive unit 28 is provided comprising a adhesive container 29 in which an adhesive roll 30 is rotating.
  • the adhesive roll 30 transfers adhesive to radial slots in the jacket of an adhesive roller along which the threads 4 pass before being pressed with their glued sides to the tipping wrapper 6. and in the filling means layers 7 when passing a guiding means 12.
  • the adhesive unit 28 is provided with a pressurized air cylinder 26 and a tumbler lever 27, just as in the filling means supply unit 21 and they have the same function as in the latter.
  • the threads 4 emerge from a thread supply unit 32 in which a plurality of thread spools 33 are positioned with threads of textile or synthetic filaments having a diameter of about 0.1 mm or more. Between the thread supply unit 32 and the unit 28 the threads are extending over an elevating roll 35 applied to the pivotable end of an arm 34 and after that the tipping wrapper 6 and the threads 4 move together substantially vertically upwards along a seam sticking nozzle 36, a possible drying device (not shown), a guiding shoe 38 positioned at the pivotable end of a scanning arm 37 towards a horizontal upper portion of a size strip 39, which forms part of the so-called strand former 40.
  • the seam sticking nozzle 36 provides a adhesive layer along one of the edges of the tipping wrapper so that it can be overlappingly sealed in the strand former 40.
  • This adhesive layer can exist of a "hot melt”.
  • the rod supply unit 42 further comprises a hopper 45 with a stock of filter rods surrounded by filter wrapping material 3 with a length of two, four or six future cigarette filters, which are transferred to a filter mill 47 by rotating transferring drums 46, which filter mill places the filter rods on the strings 41. But it is also possible to continuously supply a filter strand surrounded by filter wrapping material in the direction of movement of the ipper portions of the strings 41 of the rod supply unit 42.
  • rhe strand former 40 is a device with a flat plate 48, changing into a circular shaped tube, so that the assembly of size strip 39, tipping wrapper 6 with threads 4 and a rod 2 surrounded by an air-impervious layer 3, changes its shape from the left to the right in figure 1.
  • the size strip 39 is extending between guiding rolls 49 and is driven by a so-called size strip drum 50.
  • a size strip drum 50 One should imagine the situation in which the cutting device 51 and the capstan roller 16 are connected to each other by a predetermined transfer ratio and in which the size strip drum 50 with a variable transfer ratio is connected to the cutting device 51 and the capstan roller 16.
  • the transport rate of the strand in the strand former will not be in absolutely fixed relation to the rotational speed of the size strip drum 50.
  • the transport rate of the strand stays exactly equal to the transport rate of the tipping wrapper 6 on capstan roller 16. This condition.has to be fulfilled because only then the strand is cut exactly half-way between 2 perforations and at a location at which a filling means layer 7 is positioned between the intersection and the next perforation.
  • the scanning arm 37 is spring-loaded in the direction of the arrow 52 and is supported by a shaft 53. So the position of the shaft 53 can be used as reference for the length of the path of the tipping wrapper 6 between the perforation device 14 and the strand cutter 51.
  • the radial position of the scanning arm is converted into an electrical signal which is fed to an electronic control unit 55 by a line 54, which electronic control unit adjusts the variable transmission between the capstan roller 16 and the size strip drum 50.
  • an epicyclic transmission with outer involute teeth is mentioned (not shown).
  • the satellite carrier 58 thereof is connected to a step motor 57 by a tooth belt 56, which step motor rotates the satellite carrier with such a velocity that the desired number of revolutions of the size strip drum 50 is reached.
  • the number of revolutions of the step motor is automatically adjusted by the electronic control unit such, that the transport rate in the strand former 40 is synchronised with the speed at which the tipping wrapper is conveyed through the capstan roller 16.
  • the result of the synchronisation between the capstan roller 16 and the size strip speed is an automatic fixation of the cutting positions with respect to the position of the perforations at both sides of the filling means layers 7 which are positioned close to each other, by keeping the length of the path of tipping wrapper between the perforation device 14 and the strand cutter 51 constant automatically.
  • the number of revolutions of the driving of the perforation device 14 is translated into an electrical adjusting signal by a tacho generator.
  • the adjusting signals of the position of the scanning arm 37 and the tacho generator are processed by the electronic control unit 55 and are converted into a frequency modulated electric signal, with which the number of revolutions of the step motor 57 is adjusted preliminary to the driving of the satellite carrier 58 of the epicyclic transmission.
  • the characteristic of the frequency modulated control system is the very short reaction time between measuring and adjusting. This time is much shorter than the acceleration and deceleration time of the machine, so that inwardly and outwardly pendulating phenomenons are kept below a disturbing level during starting and stopping of the machine .
  • the interaction between the scanning arm, the tacho generator, the control unit and the length of the material path forms a pseudo "stage locked loop" system, which is free of disturbing oscillation phenomenons within the control area.
  • a determined length of filter rods can be manufacured in which 2 or a multiple of 2 future cigarette filters are positioned alternately in opposite direction. Finally one single cigarette filter can be connected to a tobacco column by an extra ring 59 in the way indicated in figure 2.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP84200598A 1983-04-29 1984-04-27 Procédé et installation pour la fabrication d'un filtre de cigarette Ceased EP0124179A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8301520 1983-04-29
NL8301520A NL8301520A (nl) 1983-04-29 1983-04-29 Werkwijze en installatie voor het vervaardigen van een sigarettenfilter.

Publications (1)

Publication Number Publication Date
EP0124179A1 true EP0124179A1 (fr) 1984-11-07

Family

ID=19841782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84200598A Ceased EP0124179A1 (fr) 1983-04-29 1984-04-27 Procédé et installation pour la fabrication d'un filtre de cigarette

Country Status (2)

Country Link
EP (1) EP0124179A1 (fr)
NL (1) NL8301520A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3613377A1 (de) * 1985-04-22 1986-10-23 Cigarette Components Ltd., London Ventiliertes tabakrauchfilter
EP0476969A1 (fr) * 1990-09-20 1992-03-25 Philip Morris Products Inc. Cigarette à filtre
WO2007034334A2 (fr) * 2005-07-29 2007-03-29 Philip Morris Products S.A. Emballage exterieur pour cigarette filtree

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1220577A (fr) * 1958-04-16 1960-05-25 Olin Mathieson Cigarettes perfectionnées
FR1531543A (fr) * 1967-05-22 1968-07-05 Seita Nouvel embout pour produits à fumer
GB2088193A (en) * 1980-12-01 1982-06-09 Brown & Williamson Tobacco Filters for cigarettes
EP0059042A1 (fr) * 1981-02-14 1982-09-01 Fabriques De Tabac Reunies S.A. Articles à fumer avec filtres et appareil pour leur production

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1220577A (fr) * 1958-04-16 1960-05-25 Olin Mathieson Cigarettes perfectionnées
FR1531543A (fr) * 1967-05-22 1968-07-05 Seita Nouvel embout pour produits à fumer
GB2088193A (en) * 1980-12-01 1982-06-09 Brown & Williamson Tobacco Filters for cigarettes
EP0059042A1 (fr) * 1981-02-14 1982-09-01 Fabriques De Tabac Reunies S.A. Articles à fumer avec filtres et appareil pour leur production

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3613377A1 (de) * 1985-04-22 1986-10-23 Cigarette Components Ltd., London Ventiliertes tabakrauchfilter
DE3613377C2 (de) * 1985-04-22 2002-02-07 Cigarette Components Ltd Tabakrauchfilterstab und Verfahren zur Herstellung eines Tabakrauchfilterstabes
EP0476969A1 (fr) * 1990-09-20 1992-03-25 Philip Morris Products Inc. Cigarette à filtre
WO2007034334A2 (fr) * 2005-07-29 2007-03-29 Philip Morris Products S.A. Emballage exterieur pour cigarette filtree
WO2007034334A3 (fr) * 2005-07-29 2007-08-09 Philip Morris Prod Emballage exterieur pour cigarette filtree
US7743773B2 (en) 2005-07-29 2010-06-29 Philip Morris Usa Inc. Over-wrap for smoking article

Also Published As

Publication number Publication date
NL8301520A (nl) 1984-11-16

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Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19841130

17Q First examination report despatched

Effective date: 19860321

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19870316

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RASING, JOHANNES HERMANUS MARIA

Inventor name: VAN VLODROP, DIRK WILHELMUS

Inventor name: VAN DER HEIDE, JOHANNES

Inventor name: HOGE, JOHANNES HENDRIKUS