EP0919144B1 - Procédé et dispositif pour le traitement d'une bande de cordons filtrant - Google Patents

Procédé et dispositif pour le traitement d'une bande de cordons filtrant Download PDF

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Publication number
EP0919144B1
EP0919144B1 EP98121079A EP98121079A EP0919144B1 EP 0919144 B1 EP0919144 B1 EP 0919144B1 EP 98121079 A EP98121079 A EP 98121079A EP 98121079 A EP98121079 A EP 98121079A EP 0919144 B1 EP0919144 B1 EP 0919144B1
Authority
EP
European Patent Office
Prior art keywords
air
filter tow
guide channel
blown
filter
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
EP98121079A
Other languages
German (de)
English (en)
Other versions
EP0919144B2 (fr
EP0919144A1 (fr
Inventor
Firdausia Dr. Chehab
Stefan Fietkau
Peter-Franz Arnold
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
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Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP0919144A1 publication Critical patent/EP0919144A1/fr
Application granted granted Critical
Publication of EP0919144B1 publication Critical patent/EP0919144B1/fr
Publication of EP0919144B2 publication Critical patent/EP0919144B2/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
    • A24D3/0229—Filter rod forming processes
    • A24D3/0233—Filter rod forming processes by means of a garniture

Definitions

  • the invention relates to a method for treating a filter tow strip during its continuous cross-sectional gathering within a guide channel, which is subsequently encased in a filter tow strand with the purpose of forming a filter strand with a wrapping strip from which filter rods are cut off, compressed gas being blown into the filter tow strips during gathering. which exits the gathering area downstream in an air outlet zone through channels.
  • the invention also relates to a device for treating a filter tow strip, with a guide channel, the cross section of which decreases in order to gather the strip and which has an inlet for supplying a gas under pressure and a downstream air outlet zone for discharging the air blown into the filter tow.
  • filter tow is understood to mean a fleece made from a large number of crimped synthetic staple fibers and / or filaments, which, for. B. consists of cellulose acetate, staple fibers and / or filaments.
  • guide channel is understood to mean a channel referred to in the technique of filter production by means of strand machines as a "finger” with a cross section that decreases in the conveying direction in order to gather the filter tow conveyed in the channel and to reduce its cross section until the strand cross section is approximately reached.
  • upstream and downstream are based on the conveying direction of the filter tow as the "current".
  • the device mentioned at the outset is characterized in that downstream the air outlet zone another inlet for supplying a gas under pressure in the guide channel and a further air outlet zone for discharging the into the Filtertow air is provided from the guide channel.
  • the surprising advantage of the method and the device according to the invention is that the homogeneity of the filter rods is still significantly improved is, as the comparison photos of Figures 5 and 6 show.
  • FIG. 1 shows an arrangement by the applicant for processing filter tow, which preferably consists of cellulose acetate, which is known under the name AF in the tobacco processing industry.
  • a strip 3 is drawn from a bale 1 of strips of filter tow made of cellulose acetate lying one above the other from a driven roller pair 2, for example consisting of a grooved roller and a rubber roller acting against it, dissolved and spread by an air nozzle 4, guided over a roller 6 and by a further air nozzle 7 spread further and loosened up.
  • a towed, ie non-driven pair of brake rollers 8 retains the web 9 formed from spread threads of filter tow somewhat.
  • a spraying device 12 Downstream of the pair of rollers 11 is a spraying device 12 in which droplets of liquid plasticizer 13, e.g. B. triazetin, are sprayed from below by means of a rotating brush 14 onto the threads of the web 9 guided in one plane from tow material.
  • liquid plasticizer 13 e.g. B. triazetin
  • the web 9 After deflection by a further driven pair of rollers 16, the web 9, while reducing its width, passes through a nozzle 17 which is pressurized with compressed air and has a compressed air connection 17a to an inlet funnel 18 of a subsequent filter rod machine KDF, not shown, for. B. of the type known in the tobacco processing industry type KDF2 or KDF3 of the applicant.
  • the arrows 19 indicate the direction of movement of the web 9.
  • the funnel 18 is followed by a so-called format device 20, which has a guide channel 21 for the filter tow (hereinafter referred to as "finger" for short) with a decreasing cross-section, so that the filter tow is continuously gathered up when it is conveyed by narrowing the cross-section until it is approximately the same Cross section of a filter rod required in the tobacco processing industry for the manufacture of filter cigarettes.
  • the filter tow is pulled by the so-called format belt 22, which is fed together with a wrapping strip 24 (eg paper strip) via a deflection roller 23, through the format device 20.
  • a wrapping strip 24 eg paper strip
  • the paper strip 24 glued on one edge is placed around the filter tow strand and then a filter strand is formed in a known manner, not shown, from which the individual filter rods are cut off.
  • a filter strand is formed in a known manner, not shown, from which the individual filter rods are cut off.
  • the inlet part is shown with the finger 21.
  • the other parts of a format device such as gluing chamber and the like are not shown since they are not affected by the invention.
  • Figures 2 to 4 show a conveyor channel 21, in practice also called "finger", which narrows in the direction of arrow 19, ie the cross section of which continuously decreases. This also reduces the cross section of the filter tow strip, except for the thickness of the filter strand.
  • the format tape 22 is shown only schematically in FIG. 2 as a floor tape, although in reality it is arched up on both sides of the finger 21 and would thereby partially cover the finger. This part of the format tape is therefore omitted.
  • Compressed air at, for example, 3 bar is supplied at a first air inlet 26 and flows into the interior of the finger 21 and the filter tow moved through through slot-like channels 28 provided in the wall 27 in three rows.
  • the angle at which the air flows out of the wall 27 can be between 10 ° and 30 °, based on the longitudinal axis of the finger, for example 20 °, so that the filter material receives a conveying component through the air.
  • the blown-in air can emerge from the finger 21 through an air outlet zone 29 designed as a sieve.
  • the outlet channels 31 in the outlet zone are of the same size and in the exemplary embodiment have an approximately circular shape with a diameter of approximately 0.5 to 1.5 mm, e.g. B. of about 1 mm.
  • the outlet channels can also have other shapes and dimensions.
  • the air outlet zone 29 Downstream from the air outlet zone 29 there is another air inlet 32, through which compressed air of, for example, 2 bar is supplied, which flows into the interior of the finger 21 and the filter tow guided therein through slot-like channels 33 provided in the wall 27 in three rows. Its fibers are swirled again, which has a positive effect on the homogeneity of the filter rods produced.
  • the angle at which the air flows out of the wall 27 can likewise again be approximately 10 ° to 30 °, based on the longitudinal axis of the finger, for example approximately 20 °.
  • the further blown-in air can escape from the finger 21 through a further downstream air outlet zone 34 which is designed in the form of a sieve.
  • the outlet channels 36 can have the same shape and dimensions as the outlet channels 31. The relatively small dimensions of the outlet channels are advantageous because practically no fibers pass out of the filter tow to the outside.
  • the pressure of the supplied air can exceed or fall below the specified values.
  • Figure 5 shows the distribution of filter tow in an open filter rod, which in a Device had been produced according to EP-B1-0269915. You can see that the distribution is non-uniform and has two bead-shaped thickenings 41, 42, between which there is a zone 43 with less material.
  • FIG. 6 shows the distribution of filter tow material in an open filter rod was produced according to the invention. You can see a very homogeneous distribution of the filter tow 44 over practically the entire area, which for a better The quality of the filter rod is the cause.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Filtering Materials (AREA)

Claims (14)

  1. Procédé de traitement d'une bande de matériau filtrant brut durant sa contraction continue réduisant sa section transversale à l'intérieur d'un canal de guidage pour former un boudin de matériau filtrant, qui, ensuite, est enveloppé d'une bande d'enveloppe en vue de former un boudin de filtre duquel sont sectionnés des bouts de filtre, du gaz sous pression, de préférence de l'air comprimé étant insufflé dans la bande de matériau filtrant durant l'opération de contraction, et ce gaz ou l'air sortant de la zone de contraction par des canaux, en aval, dans une zone de sortie d'air, caractérisé en ce qu'en aval de la zone de sortie d'air, un autre écoulement de gaz, de préférence de l'air, est insufflé dans la bande de matériau filtrant, et en ce que l'air sort par des canaux dans une autre zone de sortie d'air disposée en aval.
  2. Procédé selon la revendication 1, caractérisé en ce que ledit autre écoulement d'air est insufflé avec une pression plus faible que l'écoulement d'air insufflé en amont.
  3. Procédé selon la revendication 1 et/ou 2, caractérisé en ce que l'air est insufflé dans le canal de guidage par des fentes qui s'étendent au moins partiellement, avec une composante prépondérante dans la direction de déplacement ou de mouvement du matériau filtrant.
  4. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que l'air s'échappe du canal de guidage, dans les zones de sortie d'air, par des canaux de section transversale constante.
  5. Dispositif de traitement d'une bande de matériau filtrant brut, comprenant un canal de guidage dont la section transversale diminue pour réaliser la contraction de la bande, et qui présente une entrée pour l'amenée d'un gaz, de préférence de l'air, sous pression, ainsi qu'une zone de sortie d'air disposée en aval et destinée à évacuer l'air ayant été insufflé dans le matériau filtrant, caractérisé en ce qu'en aval de la zone de sortie d'air (29) sont prévues une autre entrée (32) pour l'amenée d'un gaz, de préférence de l'air, sous pression, dans le canal de guidage (21), ainsi qu'une autre zone de sortie d'air (34) pour évacuer du canal de guidage (21), l'air insufflé dans le matériau filtrant.
  6. Dispositif selon la revendication 5, caractérisé en ce que la pression avec laquelle l'air est insufflé dans ladite autre entrée et dans le matériau filtrant, est inférieure à la pression avec laquelle l'air est insufflé dans le matériau filtrant au niveau de l'entrée placée en amont.
  7. Dispositif selon la revendication 6, caractérisé en ce que la pression au niveau de la première entrée d'air en se référant à la direction de transport du matériau filtrant, est au moins approximativement de 3 bar, et au moins approximativement de 2 bar au niveau de l'autre entrée d'air disposée en aval.
  8. Dispositif selon l'une ou plusieurs revendications 5 à 7, caractérisé en ce qu'au moins une zone de sortie d'air (29, 34) du canal de guidage (21) est réalisée à la manière d'un tamis.
  9. Dispositif selon la revendication 8, caractérisé en ce qu'au moins une zone de sortie d'air est pourvue de canaux de sortie d'air (31, 36) de section transversale constante.
  10. Dispositif selon la revendication 8 et/ou 9, caractérisé en ce que les canaux de sortie d'air sont réalisés en tant que trous circulaires de diamètre constant.
  11. Dispositif selon l'une ou plusieurs revendications 8 à 10, caractérisé en ce que les diamètres des canaux de sortie d'air (31, 36) se situent entre 0,8 mm et 1,2 mm, et ont de préférence une valeur d'environ 1,0 mm.
  12. Dispositif selon l'une ou plusieurs revendications 5 à 11, caractérisé en ce qu'au moins une entrée d'air (26, 32) dans le canal de guidage (21), présente plusieurs canaux d'entrée (28, 33).
  13. Dispositif selon la revendication 12, caractérisé en ce que les canaux d'entrée d'air (28, 33) présentent un angle < 90° par rapport à l'axe longitudinal du canal de guidage (21).
  14. Dispositif selon la revendication 12 et/ou 13, caractérisé en ce qu'au moins une entrée d'air (26, 32) dans le canal de guidage (21), présente des fentes (28, 33), qui s'étendent au moins partiellement, avec une composante prépondérante dans la direction de déplacement ou de mouvement (19) du matériau filtrant.
EP98121079A 1997-11-21 1998-11-06 Procédé et dispositif pour le traitement d'une bande de cordons filtrant Expired - Lifetime EP0919144B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19751598A DE19751598B4 (de) 1997-11-21 1997-11-21 Verfahren und Vorrichtung zum Behandeln eines Filtertowstreifens
DE19751598 1997-11-21

Publications (3)

Publication Number Publication Date
EP0919144A1 EP0919144A1 (fr) 1999-06-02
EP0919144B1 true EP0919144B1 (fr) 2002-08-28
EP0919144B2 EP0919144B2 (fr) 2009-04-29

Family

ID=7849400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121079A Expired - Lifetime EP0919144B2 (fr) 1997-11-21 1998-11-06 Procédé et dispositif pour le traitement d'une bande de cordons filtrant

Country Status (8)

Country Link
US (1) US6059706A (fr)
EP (1) EP0919144B2 (fr)
JP (1) JP4584371B2 (fr)
CN (1) CN1124088C (fr)
AT (1) ATE222713T1 (fr)
DE (2) DE19751598B4 (fr)
ES (1) ES2180107T5 (fr)
PL (1) PL187768B1 (fr)

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US7448390B2 (en) * 2003-05-16 2008-11-11 R.J. Reynolds Tobacco Company Equipment and methods for manufacturing cigarettes
US7275548B2 (en) * 2001-06-27 2007-10-02 R.J. Reynolds Tobacco Company Equipment for manufacturing cigarettes
US7073514B2 (en) * 2002-12-20 2006-07-11 R.J. Reynolds Tobacco Company Equipment and methods for manufacturing cigarettes
US20040238136A1 (en) * 2003-05-16 2004-12-02 Pankaj Patel Materials and methods for manufacturing cigarettes
CN1295995C (zh) * 2001-12-10 2007-01-24 侯关荣 天然纤维香烟滤棒及其制造方法
US7077145B2 (en) * 2002-12-20 2006-07-18 R.J. Reynolds Tobacco Company Equipment and methods for manufacturing cigarettes
US7234471B2 (en) * 2003-10-09 2007-06-26 R. J. Reynolds Tobacco Company Cigarette and wrapping materials therefor
US7195019B2 (en) * 2002-12-20 2007-03-27 R. J. Reynolds Tobacco Company Equipment for manufacturing cigarettes
US7281540B2 (en) * 2002-12-20 2007-10-16 R.J. Reynolds Tobacco Company Equipment and methods for manufacturing cigarettes
US20040122547A1 (en) * 2002-12-20 2004-06-24 Seymour Sydney Keith Equipment and methods for manufacturing cigarettes
US7275549B2 (en) * 2002-12-20 2007-10-02 R.J. Reynolds Tobacco Company Garniture web control
US7117871B2 (en) * 2002-12-20 2006-10-10 R.J. Reynolds Tobacco Company Methods for manufacturing cigarettes
US7276120B2 (en) * 2003-05-16 2007-10-02 R.J. Reynolds Tobacco Company Materials and methods for manufacturing cigarettes
US7047982B2 (en) * 2003-05-16 2006-05-23 R.J. Reynolds Tobacco Company Method for registering pattern location on cigarette wrapping material
GB2405373B (en) * 2003-08-14 2005-08-31 Dempson Packaging Ltd Method and apparatus for manufacturing handles for bags
DE10354924B4 (de) * 2003-11-25 2024-01-18 Körber Technologies Gmbh Vorrichtung zum Aufbereiten von Filtertowmaterial sowie Vorrichtung zur Herstellung von Filtern
DE102004004688A1 (de) * 2004-01-29 2005-08-25 Hauni Maschinenbau Ag Separate Entspannung und Besprühung eines Filtertowstreifens
DE102005009608A1 (de) * 2005-02-28 2006-08-31 Hauni Maschinenbau Ag Filter für Artikel der Tabak verarbeitenden Industrie
DE102006018111A1 (de) * 2006-04-18 2007-10-25 Hauni Maschinenbau Ag Aufbereitungseinheit zur Aufbereitung mindestens eines Filtertowstreifens für die Herstellung von Filtern für stabförmige Rauchartikel
DE102008056384B4 (de) 2008-11-10 2017-03-30 British American Tobacco (Germany) Gmbh Multifilter für einen Rauchartikel
GB0905210D0 (en) * 2009-03-26 2009-05-13 British American Tobacco Co Rod for a smoking article and method and apparatus for manufacture
DE102009041318A1 (de) * 2009-09-15 2011-03-31 Hauni Maschinenbau Ag Einlegen von Filtersegmenten in Filterstränge
DE102011054057A1 (de) 2011-09-29 2013-04-04 Hauni Maschinenbau Ag Vorrichtung für die Herstellung von Filtern der Tabak verarbeitenden Industrie
PL238487B1 (pl) * 2013-06-11 2021-08-30 Int Tobacco Machinery Poland Spolka Z Ograniczona Odpowiedzialnoscia Sposób i stopka do nagniatania segmentów filtra segmentowego
CN103640923B (zh) * 2013-12-06 2016-06-08 湖南中烟工业有限责任公司 丝束和滤纸机械折叠混合的卷烟滤棒成型装置
JP6659425B2 (ja) * 2016-03-30 2020-03-04 株式会社ダイセル トウ開繊体製造装置及びトウ開繊体の製造方法
JP6611253B2 (ja) * 2016-03-30 2019-11-27 株式会社ダイセル 繊維シート製造装置及び繊維シートの製造方法
US11945178B2 (en) * 2017-03-24 2024-04-02 British American Tobacco (Investments) Limited Methods and equipment for forming tubes of fibrous material
WO2018210982A1 (fr) * 2017-05-18 2018-11-22 Philip Morris Products S.A. Procédé de mise en forme d'un matériau à bande continue en une tige

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Also Published As

Publication number Publication date
ES2180107T5 (es) 2009-06-23
EP0919144B2 (fr) 2009-04-29
DE19751598A1 (de) 1999-05-27
ES2180107T3 (es) 2003-02-01
PL187768B1 (pl) 2004-10-29
EP0919144A1 (fr) 1999-06-02
JP4584371B2 (ja) 2010-11-17
JPH11221068A (ja) 1999-08-17
US6059706A (en) 2000-05-09
ATE222713T1 (de) 2002-09-15
CN1124088C (zh) 2003-10-15
PL329786A1 (en) 1999-05-24
CN1227733A (zh) 1999-09-08
DE19751598B4 (de) 2008-04-17
DE59805299D1 (de) 2002-10-02

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