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WO2014125096A1 - Système et procédé pour l'alimentation en boudin de filtre et papier de gainage d'un poste de formation de bâtonnets d'un système de fabrication de bâtonnets-filtres - Google Patents

Système et procédé pour l'alimentation en boudin de filtre et papier de gainage d'un poste de formation de bâtonnets d'un système de fabrication de bâtonnets-filtres Download PDF

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Publication number
WO2014125096A1
WO2014125096A1 PCT/EP2014/052966 EP2014052966W WO2014125096A1 WO 2014125096 A1 WO2014125096 A1 WO 2014125096A1 EP 2014052966 W EP2014052966 W EP 2014052966W WO 2014125096 A1 WO2014125096 A1 WO 2014125096A1
Authority
WO
WIPO (PCT)
Prior art keywords
tow
filter
plug wrap
rod
rfs
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
PCT/EP2014/052966
Other languages
English (en)
Inventor
Mario NARDUCHI
Heloiso Eugenio BACARIM
Marcelo Pereira SANTOS
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.)
Souza Cruz SA
British American Tobacco Investments Ltd IFI
Original Assignee
Souza Cruz SA
British American Tobacco Investments Ltd IFI
British American Tobacco Co Ltd
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 Souza Cruz SA, British American Tobacco Investments Ltd IFI, British American Tobacco Co Ltd filed Critical Souza Cruz SA
Publication of WO2014125096A1 publication Critical patent/WO2014125096A1/fr
Anticipated expiration legal-status Critical
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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • 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 present invention relates to a system and a method for supplying filter tow and plug wrap to a rod formation stage of a filter rod maker used to produce filter elements for smoking articles including conventional, AFF (Acetate Fluted Filter) and/or Coaxial type filters.
  • AFF Acetate Fluted Filter
  • a filter rod element comprises a fiber tow, commonly cellulose acetate fibers/filaments, a plasticizing material for binding said fibers, and a paper material, known as "plug wrap” or “plugwrap", for shaping the filter element.
  • AFF type filter rods comprise an inner wrap and an outer wrap, the inner wrap being subjected to an embossing process whereby it is grooved along regular sections of its length.
  • Each filter rod will include a length of grooved inner wrap, known as “flutes” and a segment of non-grooved inner wrap, known as “bars".
  • the filters are produced as continuous rod including flutes and bars, said continuous rod being cut into suitable segments for use in further smoking article production steps.
  • the manufacture of filter rods from continuous fiber filter tow comprises moving the filter tow in a generally longitudinal direction through successive treatment steps for aligning tow fibers, and applying plasticizers and other additives to the fibers before the tow is gathered and formed into a predetermined shape such as a substantially cylindrical rod.
  • the processing steps include the application of at least one paper wrap to the filter rod in order to produce a paper wrapped filter rod having at least one paper wrap layer, and further cutting process to transform the continuous filter rod into filter bars of specific length.
  • Filter Rod Manufacturing System also called Filter Rod Maker
  • said filter bars production is performed, in general, in three stages based in their main functions:
  • Stage 1- the tow processor stage (TPS)
  • Stage 2- the rod formation stage (RFS)
  • Stage 3- the cutting stage (CS)
  • a system for supplying filter tow and plug wrap to the rod formation stage (RFS) of a Filter Rod Maker comprising: (A) an integral unit (TPU - Tow Processing Unit) that includes: (i) a first and a second tow processing components (TPC) to continuously process and transfer, each one, a length of filament tow from a tow feeder to the rod formation stage (RFS), (ii) a first plug wrap feeder component (PWFC), (iii) an embossing module for providing at least one grooved region on said first plug wrap of a filter rod, (iv) an adhesive applicator nozzle for the anchorage of said first plug wrap to one of said first and second processed tows; (B) a second PWFC, located in the lower front side of the RFS; and (C) a control module.
  • TPU - Tow Processing Unit that includes: (i) a first and a second tow processing components (TPC) to continuously process and transfer, each one, a length of filament to
  • TPC tow Processor Component described above
  • RFS Rod Formation Stage
  • the system just comprises one Tow Processor Component (TPC) and a control module to feed RFS with the processed tow from said TPU.
  • TPC Tow Processor Component
  • the first PWFC is out of operation, and the second PWFC, located in the lower front side of the RFS, will supply the necessary plug wrap to form the conventional filter rod.
  • the system further comprises an embossing module and the plug wrap feeding component is configured to supply the first plug wrap (forming the inner plug wrap) which is embossed by said embossing module prior to receiving an anchorage adhesive and being fed from the TPU to the RFS.
  • the second plug wrap feeding component which may be part of the conventional Rod Formation Stage, feeds a second plug wrap (forming the outer plug wrap) and this second plug wrap will join said embossed first plug wrap and said filament tow coming from the TPU to produce AFF filter type.
  • the Tow Processing Unit further comprises a second tow processing component, located just below the first TPC for feeding said second filament tow in order to supply the RFS with two filament tows and one plug wrap.
  • This embodiment provides means for obtaining the coaxial filter type.
  • the second tow processing component comprises a second set of roller pairs configured to alter the tension in the filament tow received from the second tow feeder.
  • the second tow processing component also includes a second applicator device for the application of plasticizer to the filament tow received from the second tow feeder and a second set of guide rollers for guiding the second filament tow into the RFS.
  • the system preferably includes a control module operable by a user to separately activate or deactivate individual components and modules depending on a filter type to be manufactured by a rod formation stage that is fed with filter tows and plug wrap by said system.
  • control unit is configured to synchronise individual components and modules within said system.
  • a filter rod maker comprising a system as defined before and a rod formation stage (RFS) positioned downstream of said TPU in the direction of flow of filter tow and plug wrap from said TPU , to make filter rods from filter tow and plug wrap received.
  • RFS rod formation stage
  • the filter rod maker may include a cutting stage for cutting filter rod into individual filter bars and the system then preferably includes a processor to synchronise modules and components of the TPU with the rod formation and cutting stages of the filter rod maker.
  • a method for supplying filter tow and plug wrap to a rod formation stage (RFS) for the manufacture of filter rods for smoking articles comprising coupling the system of the invention, as defined above, to a rod formation stage so that filter tows and plug wrap from said system are fed from said system to said rod formation stage (RFS).
  • RFS rod formation stage
  • the system includes a control module and the method includes controlling the control module to independently activate or deactivate different components of the system depending on the type of filter rod to be manufactured by the filter rod maker.
  • Figure 1 is a view, in perspective, of the main TPU unit of the present invention.
  • Figure 1A shows the TPU unit of Figure 1 in use and having been fed with a single continuous length of tow and the first plug wrap for producing AFF type filter;
  • Figure IB shows the TPU unit of Figure 1 in use but having been fed with two continuous lengths of tow for producing a coaxial type filter, which may also be of the AFF type if the inner plug wrap is fed;
  • FIG 1C is the same view as Figure 1 but shows the non-functioning part of the TPU (the second TPC and the first plug wrap component) when only conventional type filter is to be formed;
  • FIG. 2A is a schematic drawing of the TPU unit to illustrate how the apparatus may be used to supply a rod formation stage with inner, embossed plug wrap (PI), together with a filament tow for the purpose of making AFF type filters.
  • PI embossed plug wrap
  • the outer plug wrap is being supplied by a second PWFC (P2) attached to the RFS; and
  • FIG. 2B is a schematic drawing of the TPU unit to show the operation mode for producing a conventional type filter in which the embossing module and the first plug wrap feeder is disabled.
  • an equipment supplies a fiber tow, preferably crimped plasticized filaments of cellulose acetate, to a section where a continuous filter rod is formed, and further it is enwrapped by at least one paper wrap strip supplied from a plug wrap feeder (PWFC).
  • the plug wrap feeder is a separate and independent device to the device that supplies the filter rod making machine with filter tow and may be positioned separately to and spaced from the device for supplying the fibre tow.
  • a further plug wrap feeder provides a separate inner wrap which is subjected to an embossing process whereby it is grooved along regular sections of its length using an embossing unit.
  • a strip of paper, the outer plugwrap comes from a bobbin and is fed to an adhesive device which applies adhesive in positions upon the second plugwrap in a fashion such that the adhesive material contacts the non-embossed regions of the inner wrap.
  • the second plug wrap feeder is separate and independent to the first plug wrap feeder.
  • the embossing unit is also a separate and independent component.
  • a continuous rod made up of a filtering core and two filter wrappers, an inner plugwrap and an outer plugwrap, is formed which further passes to a cut-off device for dividing the continuous filter rod in multiple filter rod segments (bars) having a specific length.
  • apparatus having means for embossing grooves in filtering rods is disclosed.
  • nozzle means are positioned in the path of a moving filter tow downstream of a point at which the filter tow has been sufficiently gathered and compressed by converging means to envelop the nozzle means in substantially encircling fashion.
  • each type of filter rod i.e. conventional type, AFF type or Coaxial type
  • the amount of modification that is required to be made to the filter rod maker could be kept to a minimum and that the process for adapting the filter rod maker to produce different filter types could be simplified.
  • the present invention provides a system positionable upstream of a rod formation stage of a filter rod maker, that will replace the existing TPS, and which may include together, as a single integrated unit, most of the required components or modules necessary to feed the rod formation stage (RFS) with the required tow and embossed/unembossed plug wrap, depending on the filter type being produced by the filter rod making machine.
  • RFS rod formation stage
  • the same system can therefore be used to supply the filter rod maker with the required filter tow and plug wrap for all filter types, without having to add or remove each component separately or modify completely the filter rod formation stage itself.
  • the system of the invention may simply comprise a first tow processor (TPC) component active for processing filter tow received from a filter tow feeder while the second TPC and the first PWFC (PI) remain inactive.
  • Said first tow processor component (TPC) may tension or stretch the tow and otherwise make it ready for forming into a filter rod by the filter rod formation stage (RFS) downstream of the TPU, where it will join the plugwrap coming from said second PWFC (P2), which may be part of the rod formation stage (RFS).
  • Conventional filters may be made by the filter rod maker in this way by the system of the invention.
  • the system of the invention may also be used to produce either (AFF) type filters or coaxial type filters as well, in order to enhance factory manufacturing flexibility and to reduce production costs.
  • the TPU may be provided with an embossing stage or module for embossing a plug wrap fed from the first plug wrap feeder (said first PWFC (PI)), for forming the inner plug wrap of an AFF type filter rod.
  • the outer plugwrap is provided by a second plug wrap feeder (said second PWFC (P2)) which may be attached directly to the rod formation stage (RFS).
  • the system may also be provided with an active second tow processing component (TPC) for processing tow received from a second tow feeder, for the production of coaxial filters.
  • TPC active second tow processing component
  • This second tow processing component is located vertically in parallel with the active first (TPC) on the TPU for producing a coaxial type filter rod.
  • the system of the invention will allow the production of differentiated types of filter bars such as, but not limited to, conventional type, AFF type, and Coaxial Filter bar type in the same filter rod maker.
  • the system of the invention has several advantages such as simplicity of operation, flexibility for producing different types of filter rod, cost reduction in the whole process, and lower amount of time spent with modification/adaptation of several components of a filter rod maker.
  • Figure 1 shows the TPU of the invention comprising a first embodiment for producing conventional type filter or AFF and/or coaxial type filters.
  • the TPU as represented in Figure 1, comprises a first and a second tow processing component (TPC) that include a first set 1 of roller pairs for guiding and processing a first filament filter tow, e.g. acetate filament.
  • the second TPC located just below the first TPC, is showed in the inactive position.
  • the set of roller pairs 1 provides differential tension in the first filament filter tow Tl, and, accordingly, provides a different specification of the filter which is being formed.
  • This first filament tow Tl which comes from a source SI (see Figure 1A), is fed to the roller pairs set 1 from a filament tow feeder 3a.
  • An embossing component or module 2 provides a grooved region in the first plugwrap PI (which will form the inner plugwrap in an AFF type filter rod) that comes from a first plugwrap feeder 4 (corresponding to the PWFC PI of Figure 2), and before going into the RFS the embossed plugwrap receives a line of adhesive which will provide a good anchorage of the plugwrap PI to the tow Tl .
  • the first filament filter tow Tl coming from the filament tow feeder 3a passes by the guide rollers 5 and by the first set 1 of roller pairs and further goes to a first device 6 for receiving plasticizer, e.g.
  • Triacetin and finally this first filter tow Tl with plasticizer is transferred to out of the system of the invention and into the rod formation stage (RFS - corresponding to R in Figure 2A and 2B) by means of guide rollers 7.
  • a second filament filter tow T2 coming from the filament tow feeder 3b passes by guide rollers 9 and by the second set 10 of roller pairs, and further goes to a second device 11 where a plasticizer, e.g. Triacetin, is applied.
  • This second filament filter tow is then transferred out of the system of the invention and into the rod formation stage by means of guide rollers 12.
  • a monitor screen 8 is provided for controlling and adjusting operation parameters, such as velocity of the different rollers sets, pressure of rollers sets, operation or non-operation of modules, guide rollers sets positioning and production quality.
  • operation parameters such as velocity of the different rollers sets, pressure of rollers sets, operation or non-operation of modules, guide rollers sets positioning and production quality.
  • filament tow feeder 3b the following components: filament tow feeder 3b, guide rollers 9, roller pairs set 10, device 11 and guide rollers 12 are out of operation and the apparatus is used to supply filter tow Tl and plug wrap PI to a rod formation stage for making AFF type filter rods. If the first plug wrap feeder (4) and the embossing unit 2 are also deactivated, then the system can be used to supply filter tow Tl to the rod formation stage for making conventional filter rods after joining Plugwrap P2, fed from a second plug wrap feeder (not shown) located in the lower front side of the RFS.
  • a second plug wrap feeder not shown
  • the filament tow feeder 3b, the guide rollers 9, the roller pairs set 10, device 11 and guide rollers 12 may all be in operation in order to provide the RFS with filter tow Tl, T2 required to make a coaxial type filter, after joining plugwrap P2 in the RFS.
  • the apparatus may be used to supply the RFS with filter tow Tl, T2 and plug wrap PI, to enable the filter rod maker to produce a filter which combines both AFF type and coaxial filter type, after joining plugwrap P2 in the RFS.
  • the filter rod maker As described above, to produce the AFF or coaxial type filter rods, it is not necessary to modify the filter rod maker itself entirely. Most the components for preparing the filter forming layers are present in the proposed system of the invention, comprising the unit represented in Figure 1. For manufacturing a conventional type filter rod, it is necessary just to put out of operation the components for preparing the second forming layer located on the lower part of the TPU, the first PWFC and the embossing system 2, as represented in Figure 1C. To accomplish the change from one type (conventional type filter rod) to the other types (AFF or coaxial type filter rod), all parameters of operation are programmed in the monitor screen 8 for easy switching by a user. Accordingly, the system can be easily controlled depending on which type of filter is to be made by the filter rod maker.
  • all components are programmed for being in the mode "in operation", i.e. the four pairs of rollers for feeding the two filament tows T1,T2, the plugwrap feeder to form the inner PI, the embossing module 2 for providing grooved regions on said inner plugwrap PI; the two sets of rollers 7,12 for transferring the two filament tows to the following stage in the filter rod manufacturing machine are in the mode "in operation", so as the nozzle (not shown) for application of anchorage adhesive to plugwrap PI.
  • the two filament tows T1,T2 independently run through their paths, as shown in Figure IB, until the point where the layers are transferred from the system to RFS.
  • a suitable device will be provided (not shown), e.g. a funnel or nozzle, for guiding the first filament tow Tl to be enclosed inside the second filament tow T2 for forming a coaxial fashion structure of filter rod together with the plugwrap P2.
  • Figure 2A shows a schematic drawing of the system of the invention.
  • the system of the invention has two plug wrap feeders and also a module (embossing head) to make flutes on the inner plugwrap PI.
  • the embossing head 2 consists of a set of specific rollers which will provide the exactly dimension of the section with flutes and regions without flutes on the inner plugwrap PI.
  • the system of the invention is provided with a suitable embossing system, e.g. a Boegli system.
  • plugwrap PI inner
  • plugwrap P2 outer
  • Figure 2B represents the manufacture of a conventional type filter rod in which the embossing system and one of the plugwrap feeders (4) is inoperative (the part shown in the box, marked with X is inoperative for the purpose of making conventional filter rods so that only one filament tow and one plug wrap is supplied to the filter rod maker).
  • a coaxial filter may be formed by providing the system unit with an additional tow processing component (which is not shown either of Figures 2A or 2B).
  • Each of the tow processing components of the system of the invention should include sets of rollers 1,10 to modulate filament tow in variable velocity in order to match the specific characteristic of the desired filter product.
  • These rollers are controlled by servo motors to guarantee a perfect timing and speed relative to the transferring rollers located after the embossing device, e.g. a Boegli System (which uses servo motors as well).
  • the system unit will also receive a speed reference signal from the RFS (e.g. a PM5 device available on the market), so that its speed is compatible with the whole process, avoiding process variations between stages.
  • the essential feature in the system of the invention is to provide on a unique unit that combines most of the various components required to manufacture different filter rod types into a single unit and by making it possible to deactivate some of those components depending on the filter rod type that is to be made, without having to modify the entire Filter rod maker.
  • synchronization means are provided, either electronic or mechanic, for all these process sequences so that components of the system may be syncronised with aspects of a RFS which is fed by the system of the invention.
  • the use of an inner plugwrap feeding component and an embossing module allow the production of AFF type filter.
  • the use of a second filament tow feeder allows the production of coaxial type of filter as well.
  • a combination of these features would allow new types of filters to be produced as well, i.e. a combination of both AFF and coaxial type filters.
  • the system may substitute the conventional TPS (tow processor stage of the commercial Filter rod makers) without any loss in throughput of conventional filters. If the system is operating in AFF filter manufacturing mode throughput is reduced by only 30%, i.e. the system of the invention provides a yield of 300-500 rods/min.

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  • Filtering Materials (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

La présente invention concerne un système pour l'alimentation en boudin de filtre et papier de gainage d'un poste de formation de bâtonnets (RFS - Rod Formation Stage) d'un dispositif de fabrication de bâtonnets-filtres, le système comprenant : (A) une unité monolithique (TPU - Tow Processing Unit - Unité de préparation de boudin) qui comprend : (i) des premier et second composants de préparation de boudin (TPC - Tow Processing Component) servant chacun à préparer et transférer de façon continue une longueur de boudin de filaments, provenant d'un dispositif d'alimentation en boudin, au poste de formation de bâtonnets (RFS - Rod Formation Stage), (ii) un composant d'alimentation en premier papier de gainage (PWFC - Plug Wrap Feeder Component), (iii) un module de gaufrage servant à réaliser au moins une région rainurée sur ledit premier papier de gainage d'un bâtonnet-filtre, (iv) une buse d'application d'adhésif pour la fixation dudit premier papier de gainage à l'un desdits premier et second boudins préparés ; (B) un second PWFC, situé du côté avant inférieur du RFS ; et (C) un module de commande.
PCT/EP2014/052966 2013-02-15 2014-02-14 Système et procédé pour l'alimentation en boudin de filtre et papier de gainage d'un poste de formation de bâtonnets d'un système de fabrication de bâtonnets-filtres Ceased WO2014125096A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRBR1020130035718 2013-02-15
BR102013003571A BR102013003571A2 (pt) 2013-02-15 2013-02-15 Sistema, método para alimentar manta de filtro e envoltório a um estágio de formação de haste e máquina de fabricação de haste de filtro

Publications (1)

Publication Number Publication Date
WO2014125096A1 true WO2014125096A1 (fr) 2014-08-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/052966 Ceased WO2014125096A1 (fr) 2013-02-15 2014-02-14 Système et procédé pour l'alimentation en boudin de filtre et papier de gainage d'un poste de formation de bâtonnets d'un système de fabrication de bâtonnets-filtres

Country Status (3)

Country Link
AR (1) AR094799A1 (fr)
BR (1) BR102013003571A2 (fr)
WO (1) WO2014125096A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20151932A1 (it) * 2015-07-06 2017-01-06 Gd Spa Metodo e macchina per la realizzazione di filtri
WO2018177782A1 (fr) * 2017-03-27 2018-10-04 Philip Morris Products S.A. Appareil et procédé permettant de former des tiges de filtre
US12479184B2 (en) 2022-11-11 2025-11-25 Boegli-Gravures Sa Method and tool for embossing of biodegradable paper to fabricate cigarette filters

Citations (6)

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Publication number Priority date Publication date Assignee Title
EP0099225A1 (fr) * 1982-07-07 1984-01-25 Mitsubishi Acetate Co., Ltd. Filtre pour fumée de tabac et méthode pour sa fabrication
US5012829A (en) * 1985-11-19 1991-05-07 Philip Morris Incorporated Flavored cigarette filters, and methods and apparatus for making same
EP0638248A1 (fr) * 1993-08-12 1995-02-15 Philip Morris Products Inc. Procédé et appareil de fabrication de filtres concentriques composés de deux ou plusieurs matériaux
CN2588802Y (zh) 2002-10-22 2003-12-03 蚌埠卷烟材料厂 沟槽滤棒成型机
WO2007135414A1 (fr) * 2006-05-22 2007-11-29 Filtrona International Limited Filtre à fumée de tabac
EP2449895A2 (fr) * 2010-11-03 2012-05-09 HAUNI Maschinenbau AG Dispositif de fabrication de filtres coaxiales pour des articles à fumer en forme de tiges

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0099225A1 (fr) * 1982-07-07 1984-01-25 Mitsubishi Acetate Co., Ltd. Filtre pour fumée de tabac et méthode pour sa fabrication
US5012829A (en) * 1985-11-19 1991-05-07 Philip Morris Incorporated Flavored cigarette filters, and methods and apparatus for making same
EP0638248A1 (fr) * 1993-08-12 1995-02-15 Philip Morris Products Inc. Procédé et appareil de fabrication de filtres concentriques composés de deux ou plusieurs matériaux
CN2588802Y (zh) 2002-10-22 2003-12-03 蚌埠卷烟材料厂 沟槽滤棒成型机
WO2007135414A1 (fr) * 2006-05-22 2007-11-29 Filtrona International Limited Filtre à fumée de tabac
EP2449895A2 (fr) * 2010-11-03 2012-05-09 HAUNI Maschinenbau AG Dispositif de fabrication de filtres coaxiales pour des articles à fumer en forme de tiges

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20151932A1 (it) * 2015-07-06 2017-01-06 Gd Spa Metodo e macchina per la realizzazione di filtri
EP3117723A1 (fr) * 2015-07-06 2017-01-18 G.D Societa' Per Azioni Procede et machine de fabrication de filtres
WO2018177782A1 (fr) * 2017-03-27 2018-10-04 Philip Morris Products S.A. Appareil et procédé permettant de former des tiges de filtre
RU2725217C1 (ru) * 2017-03-27 2020-06-30 Филип Моррис Продактс С.А. Устройство и способ для изготовления фильтрующих стержней
US11147306B2 (en) 2017-03-27 2021-10-19 Philip Morris Products S.A. Apparatus and method for forming filter rods
US12479184B2 (en) 2022-11-11 2025-11-25 Boegli-Gravures Sa Method and tool for embossing of biodegradable paper to fabricate cigarette filters

Also Published As

Publication number Publication date
BR102013003571A2 (pt) 2014-09-30
AR094799A1 (es) 2015-08-26

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