EP0919144B2 - 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
EP0919144B2
EP0919144B2 EP98121079A EP98121079A EP0919144B2 EP 0919144 B2 EP0919144 B2 EP 0919144B2 EP 98121079 A EP98121079 A EP 98121079A EP 98121079 A EP98121079 A EP 98121079A EP 0919144 B2 EP0919144 B2 EP 0919144B2
Authority
EP
European Patent Office
Prior art keywords
air
guide channel
filter tow
strip
blown
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
EP0919144B1 (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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7849400&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0919144(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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 Querroughvermindemden gather within a guide channel, which is bounded by a together with a wrapping strip via a pulley, forming a bottom band and high-curved on both sides of the guide channel format tape to a filter tow line, which subsequently is wrapped with the wrapping strip to form a filter strand, are cut off from the filter rods, wherein during the gathering compressed air is blown into the filter cloth strip, the downstream in an air outlet zone through channels from the Raff Scheme emerges.
  • the invention also relates to an apparatus for treating a filter tow, comprising a guide channel having a cross-section for gathering the strip and having an inlet for supplying air under pressure and a downstream air outlet zone for discharging the air blown into the filter tow Guide channel limiting, forming a bottom band and on both sides of the guide channel arched high format tape and with a Deflection pulley, which feeds the format strip together with a wrapping strip to the guide channel.
  • filter tow is understood to mean a nonwoven made from a multiplicity of crimped synthetic staple fibers and / or filaments, which consists, for example, of cellulose acetate, staple fibers and / or filaments.
  • guide channel is understood to mean a channel designated as a "finger” in the art of filter production by means of a channel decreasing in the conveying direction for shirring the filter tow conveyed in the channel and reducing its cross-section until it has been introduced approximately as the strand cross-section.
  • upstream and downstream the conveying direction of the filter tow is assumed to be the "current”.
  • This object is achieved in accordance with a first aspect of the invention by a method for treating a filter tow during its continuous cross-de-crimping gathering within a guide channel bounded by a format tape fed together with a wrapper strip via a diverting pulley forming a bottom band and arched on both sides of the guide channel is, to a filter tow line, which is then wrapped to form a filter strand with the wrapping strip, are cut off from the filter rods, during the tearing compressed air is blown into the filter tow, the downstream exits in an air outlet zone through channels from the Raff Scheme, characterized that downstream of the air outlet zone, a further air flow is blown under pressure into the filter tow strip and exits through channels in a further downstream air outlet zone.
  • an apparatus for treating a filter tow having a guide channel decreasing in cross section to gather the strip, and an inlet for supplying pressurized air and a downstream air exit zone for discharging the air blown into the filter tow comprising, with a guide channel delimiting, a bottom band forming and on both sides of the guide channel highly curved format strip and with a deflection roller which supplies the format strip together with a wrapping strip the guide channel, characterized in that downstream of the air outlet zone, a further inlet for supplying air under Pressure in the guide channel and a further air outlet zone for discharging the air blown into the filter tow from the guide channel are provided.
  • the surprising advantage of the method and the device according to the invention is that the homogeneity of the filter rods is significantly improved, as the comparative photos of FIGS. 5 and 6 demonstrate. Preferred embodiments and advantageous developments of the invention are specified in the dependent claims.
  • FIG. 1 shows an arrangement of the applicant for the preparation of filter tow, which preferably consists of cellulose acetate, which is known under the name AF in the tobacco processing industry.
  • filter tow which preferably consists of cellulose acetate, which is known under the name AF in the tobacco processing industry.
  • a bale 1 of superimposed strips of filter tow of cellulose acetate is drawn from a driven roller pair 2, for example consisting of grooved roller and gegenpatentedder rubber roller, a strip 3, dissolved and spread by an air nozzle 4, passed over a roller 6 and another air nozzle. 7 further spread and relaxed.
  • a dragged, ie non-driven brake roller pair 8 keeps the formed web 9 of expanded threads of filter tow something back.
  • a so-called format device 20 connects, which has a guide channel 21 for the filter tow (hereinafter referred to as "finger") with decreasing cross section, so that the filter tow is continuously gathered in its promotion by cross-sectional constriction until it is about the Cross section of a filter rod required in the tobacco processing industry for the production of filter cigarettes.
  • the filter tow is pulled through the format device 20 by a so-called format strip 22, which is fed together with a wrapping strip 24 (eg paper strip) via a deflection roller 23.
  • the paper strip 24 glued to an edge is placed around the filter tow line 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 with the finger 21 is shown.
  • the other parts of a format device such as adhesive chamber and the like. are not shown, since they are not affected by the invention.
  • FIGS. 2 to 4 show a conveyor channel 21, also called "finger” in practice, which narrows in the direction of the arrow 19, that is, whose cross-section decreases continuously.
  • the filter tow is reduced in its cross section also, to about the thickness of the filter strand.
  • the format tape 22 is in FIG. 2 only shown schematically as a bottom band, although in reality it is arched on both sides of the finger 21 and thereby partially obscure the finger. This part of the format tape is therefore omitted.
  • compressed air is supplied with, for example, 3 bar, which flows through in the wall 27 in three rows attached slot-like channels 28 in the interior of the finger 21 and the moving through the filter tow.
  • the angle at which the air flows out of the wall 27 can be between 10 ° and 30 °, relative to the longitudinal axis of the finger, for example 20 °, so that the filter material receives a delivery component through the air.
  • the injected air can escape from the finger 21 through a sieve-like air outlet zone 29.
  • the outlet channels 31 in the outlet zone are the same size and have approximately circular shape in the embodiment with a diameter of about 0.5 to 1.5 mm, z. B. of about 1 mm.
  • the outlet channels may also have other shapes and dimensions.
  • Downstream of the air exit zone 29 is another air inlet 32 through which pressurized air of, for example, 2 bar is supplied, which flows through slit-like channels 33 mounted in the wall 27 in three rows into the interior of the finger 21 and the filter tow guided therein. Its fibers are re-entangled, 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 may also again be about 10 ° to 30 °, based on the finger longitudinal axis, for example, about 20 °.
  • the injected further air can escape from the finger 21 through a further downstream arranged sieve-like air outlet zone 34.
  • the outlet channels 36 may have the same shape and dimensions as the outlet channels 31. The relatively small dimensions of the outlet channels are advantageous because virtually no fibers from the filter tow pass to the outside.
  • the pressure of the supplied air may be higher or lower than the specified values.
  • FIG. 5 shows the distribution of filter tow in an opened filter rod used in a device according to the EP-B1-0269915 had been made. It can be seen that the distribution is non-uniform and has two bulbous thickenings 41, 42, between which there is a zone 43 with less material.
  • FIG. 6 shows the distribution of filter tow material in an opened filter rod made according to the invention.

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 cordon filtrant durant sa contraction continue réduisant sa section transversale à l'intérieur d'un canal de guidage (21) qui est limité par une courroie de mise au format (22) amenée avec une bande d'enveloppement via un rouleau déflecteur (23), formant une courroie de fond et bombée sur les deux côtés du canal de guidage (21), pour former un boudin de cordon filtrant qui est, ensuite, enveloppé de la bande d'enveloppement en vue de former un boudin de filtre dans lequel sont découpées des tiges de filtre, de l'air comprimé étant insufflé dans la bande de cordon filtrant durant la contraction, lequel air comprimé sort de la zone de contraction, en aval, dans une zone de sortie d'air (29), par des canaux (31),
    caractérisé en ce qu'en aval de la zone de sortie d'air (29), un autre flux d'air est insufflé sous pression dans la bande de cordon filtrant et sort par des canaux (36) dans une autre zone de sortie d'air (34) disposée en aval.
  2. Procédé selon la revendication 1,
    caractérisé en ce que l'autre flux d'air est insufflé à une pression plus faible que le flux 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 (21) par des fentes qui s'étendent, au moins partiellement, avec une composante prépondérante dans la direction de mouvement du cordon filtrant.
  4. Procédé selon l'une ou plusieurs des revendications précédentes,
    caractérisé en ce que l'air s'échappe du canal de guidage (21), dans les zones de sortie d'air (29, 34), par des canaux de section transversale constante.
  5. Dispositif de traitement d'une bande de cordon filtrant, comprenant un canal de guidage (21), dont la section transversale diminue pour réaliser la contraction de la bande et qui présente une admission (26) pour l'amenée d'air sous pression ainsi qu'une zone de sortie d'air (29) disposée en aval et destinée à évacuer l'air insufflé dans le cordon filtrant, une courroie de mise au format (22) amenée avec une bande d'enveloppement via un rouleau déflecteur (23), formant une courroie de fond et bombée sur les deux côtés du canal de guidage (21), et un rouleau déflecteur qui transfère la courroie de mise au format (22) avec une bande d'enveloppement (24) au canal de guidage (21),
    caractérisé en ce qu'en aval de la zone de sortie d'air (29) sont prévues une autre admission (32) pour l'amenée d'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 cordon filtrant.
  6. Dispositif selon la revendication 5,
    caractérisé en ce que la pression à laquelle l'air est insufflé dans le cordon filtrant au travers de ladite autre admission (32) est inférieure à la pression à laquelle l'air est insufflé dans le matériau filtrant au travers de l'admission (26) placée en amont.
  7. Dispositif selon la revendication 6,
    caractérisé en ce que la pression au niveau de la première admission (26), en se référant à la direction de transport du cordon filtrant, est au moins approximativement de 3 bar, et au moins approximativement de 2 bar au niveau de l'autre admission (32) disposée en aval.
  8. Dispositif selon l'une ou plusieurs des 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 (29, 34) est pourvue de canaux de sortie (31,36) de section transversale constante.
  10. Dispositif selon la revendication 8 et/ou 9,
    caractérisé en ce que les canaux de sortie (31, 36) sont réalisés en tant que trous circulaires de diamètre constant.
  11. Dispositif selon l'une ou plusieurs des revendications 8 à 10,
    caractérisé en ce que les diamètres des canaux de sortie (31, 36) sont compris entre 0,8mm et 1,2mm et ont, de préférence, une valeur d'environ 1,0 mm.
  12. Dispositif selon l'une ou plusieurs des revendications 5 à 11,
    caractérisé en ce qu'au moins une admission (26,32) dans le canal de guidage (21) présente une pluralité de canaux d'admission (28,33).
  13. Dispositif selon la revendication 12,
    caractérisé en ce que les canaux d'admission (28,33) présentent un angle inférieur à 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 admission (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 mouvement (19) du cordon 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
DE19751598 1997-11-21
DE19751598A DE19751598B4 (de) 1997-11-21 1997-11-21 Verfahren und Vorrichtung zum Behandeln eines Filtertowstreifens

Publications (3)

Publication Number Publication Date
EP0919144A1 EP0919144A1 (fr) 1999-06-02
EP0919144B1 EP0919144B1 (fr) 2002-08-28
EP0919144B2 true 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
US7073514B2 (en) * 2002-12-20 2006-07-11 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
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
US7275549B2 (en) * 2002-12-20 2007-10-02 R.J. Reynolds Tobacco Company Garniture web control
US7077145B2 (en) * 2002-12-20 2006-07-18 R.J. Reynolds Tobacco Company Equipment and methods for manufacturing cigarettes
US7195019B2 (en) * 2002-12-20 2007-03-27 R. J. Reynolds Tobacco Company Equipment for manufacturing cigarettes
US20040122547A1 (en) * 2002-12-20 2004-06-24 Seymour Sydney Keith Equipment and methods for manufacturing cigarettes
US7234471B2 (en) * 2003-10-09 2007-06-26 R. J. Reynolds Tobacco Company Cigarette and wrapping materials therefor
US7117871B2 (en) * 2002-12-20 2006-10-10 R.J. Reynolds Tobacco Company Methods for manufacturing cigarettes
US7281540B2 (en) * 2002-12-20 2007-10-16 R.J. Reynolds Tobacco Company Equipment 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
US7276120B2 (en) * 2003-05-16 2007-10-02 R.J. Reynolds Tobacco Company Materials and methods for manufacturing cigarettes
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
WO2018172742A1 (fr) * 2017-03-24 2018-09-27 British American Tobacco South Africa Proprietary Limited Procédés et équipement pour former des tubes de matériau fibreux
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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EP0594094A1 (fr) † 1992-10-20 1994-04-27 WILHELM LINK GmbH & Co. KG Stahlrohrmöbel Chaise, notamment chaise de bureau

Also Published As

Publication number Publication date
US6059706A (en) 2000-05-09
PL187768B1 (pl) 2004-10-29
DE19751598A1 (de) 1999-05-27
CN1124088C (zh) 2003-10-15
DE19751598B4 (de) 2008-04-17
CN1227733A (zh) 1999-09-08
ES2180107T5 (es) 2009-06-23
JPH11221068A (ja) 1999-08-17
EP0919144B1 (fr) 2002-08-28
DE59805299D1 (de) 2002-10-02
JP4584371B2 (ja) 2010-11-17
ES2180107T3 (es) 2003-02-01
EP0919144A1 (fr) 1999-06-02
ATE222713T1 (de) 2002-09-15
PL329786A1 (en) 1999-05-24

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