EP1512336B1 - Procédé et dispositif pour la production d'une tige de filtre - Google Patents

Procédé et dispositif pour la production d'une tige de filtre Download PDF

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Publication number
EP1512336B1
EP1512336B1 EP04017038A EP04017038A EP1512336B1 EP 1512336 B1 EP1512336 B1 EP 1512336B1 EP 04017038 A EP04017038 A EP 04017038A EP 04017038 A EP04017038 A EP 04017038A EP 1512336 B1 EP1512336 B1 EP 1512336B1
Authority
EP
European Patent Office
Prior art keywords
filter material
sort
filter
conveying element
rod
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.)
Not-in-force
Application number
EP04017038A
Other languages
German (de)
English (en)
Other versions
EP1512336A1 (fr
Inventor
Alexander Buhl
Jan Peisker
Stephan Wolff
Sönke Horn
Thorsten Scherbarth
Jann De Boer
Irene Maurer
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
Priority to EP04017038A priority Critical patent/EP1512336B1/fr
Priority to PL04017038T priority patent/PL1512336T3/pl
Publication of EP1512336A1 publication Critical patent/EP1512336A1/fr
Application granted granted Critical
Publication of EP1512336B1 publication Critical patent/EP1512336B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A24D3/0237—Filter rod forming processes by extrusion

Definitions

  • the invention relates to a method for producing a filter strand of the tobacco-processing industry comprising at least one filter material.
  • the invention further relates to a device for producing a filter strand of the tobacco processing industry comprising a conveying element can be applied to the filter material and a strand forming device for forming a filter strand of the filter material, wherein the conveying element extends into the strand forming device.
  • a corresponding method and a corresponding device are known from DE-OS-1 692 901.
  • a method of manufacturing tobacco smoke filters in which substantially continuous filament material is produced by spray spinning which is conveyed against a continuously moving collecting surface arranged at an angle to the spraying path, whereby an elongate strip of randomly arranged filament sections results and parts of the belt are laterally moved relative to each other to form an endless filter strand therefrom.
  • various additives can be added to the thread material by known methods.
  • the thread material used can be cellulose acetate threads or filaments of polyethylene and polypropylene.
  • the at least one first type of filter material is pressed by means of compressed air through the at least one nozzle.
  • the curling effect of the resulting filter material threads can be increased.
  • an efficient filter strand production is given by the fact that the filter filaments from the at least one first type filter material are applied to a conveying element, which transports the filter material shortly thereafter by a shaping device, so that the process parameters can be adjusted without problems such that during the molding of the filter strand the filter material is still plasticized. As a result, little or no additional energy in the shaping is necessary.
  • the filter properties are then markedly improved if at least one second type of filter material in the form of pellets, granules and / or powder is fed to the at least one first type of filter material following the extrusion out of the at least one nozzle.
  • the second type of filter material may be, for example, activated carbon granules or powders or pellets. However, flavorings or other additives may also be used.
  • the at least one second type of filter material is supplied at a time to the at least one first type of filter material, at which the first type filter material allows adhesion of the second type filter material, a secure combination of the various filter materials is possible.
  • a particularly effective production of a filter strand with wrapping material strips is possible if the at least one first type of filter material is applied to a wrapping material strip applied to the conveying element.
  • the wrapping material strip is preferably porous so that air can pass therethrough.
  • the conveying element is preferably permeable to air, so that through the conveying element and possibly the wrapping material strip suction air acts on the filter materials to ensure a secure bond of these.
  • a wrapping material strip can be avoided or a filter strand or a filter can be produced which has only a filter material or a type of filter material in the outermost layer.
  • the filter characteristics can be improved.
  • the further filter material at least partially comprises the second type of filter material.
  • the applied layer has a width sufficient to cover the further filter material
  • the applied layer can replace a strip of wrapping material.
  • the applied layer is wound around the further filter material.
  • the layers and optionally the layers are joined together with the further filter material in the molding device. This is preferably done by adding heat and corresponding pressure, which already affects the filter material by the shaping.
  • the at least one second type of filter material is supplied to the at least one first type of filter material on the way from the at least one nozzle to the conveying element.
  • the at least one second sort of filter material is supplied to the at least one first type of filter material after the first type of filter material has been applied to the conveyor element.
  • a type of filter material sandwich or a filter material multiple structure can be produced.
  • filter materials such as cellulose acetate, polyethylene, polypropylene, nylon, polybutadiene (PBT), polycarbonate (PC), hot glue, which is known per se in the tobacco processing industry or the packaging of products of the tobacco processing industry, and also understood biodegradable polymers of mixtures with starch.
  • a device for producing a filter strand of the tobacco-processing industry comprising a conveying element, can be applied to the filter material and a strand forming device for forming a filter strand from the filter material, wherein the conveying element extends into the strand forming device, and wherein at least one nozzle is provided, can be brought by the liquefied or plasticized filter material at least a first grade on the conveying element.
  • the device according to the invention makes it possible to produce filter strands effectively and with very good filter properties and high quality.
  • a wrapping material strip is arranged between the conveying element and the filter material. If in each case a pair of nozzles is provided, which are partially directed against each other, there is an increased curl and entanglement of emerging from the nozzle threads of the filter material.
  • a plurality of nozzles are provided behind one another in the conveying direction of the conveying element, whereby a very good mixing or entanglement of the filaments of filter material is formed. If at least one supply device is provided for at least one second type of filter material, the filter properties can be significantly improved.
  • At least one feeding device is configured to convey the filter material of the second kind onto a jet of filter material of the at least one first sort emerging from the nozzles.
  • the mixing of the filter materials of the first and the second variety is increased.
  • the strand forming device is at least partially heated and / or cooled.
  • a method of manufacturing a cigarette filter comprising a method of manufacturing a filter rod of the tobacco processing industry described above provides for the cigarette filter to be cut to length from the produced filter string.
  • Fig. 1 shows a schematic representation of part of a strand machine according to the invention or apparatus for producing a filter strand of the tobacco processing industry in front view.
  • a Hot melt stock 11 which can also be referred to as hot melt adhesive supply 11
  • a nozzle 10 hot glue under pressure and fed to a shell material 17 and a format strip 19.
  • other materials such as polypropylene, polyethylene, cellulose acetate, propylene carbonate or bisphenol A carbonic acid based polycarbonates may also be used , Nylon and biodegradable polymers of blends with starch.
  • these materials in the embodiment of Fig. 1 hot glue 14 or hot melt adhesive or as another example, biodegradable polymers of mixture with starch or the aforementioned materials in the form of threads present correspondingly by sufficient pressure curled on the wrapping material 17 or the format tape 19 hang up.
  • a granulate 15 is introduced from the granulate supply 13 via feed tubes 12 directly into the hot glue fibers 14 or hot glue threads 14. This results in a very good mixing of the two filter materials hot glue 14 and granules 15.
  • the corresponding fibers or threads that emerge from the nozzles 10 are on the way to the shell material 17 and the format tape 19 still correspondingly adhesive or adhesive, so that the other filter materials, namely, for example, the granules 15 and other threads stick together or adhere to each other. This creates a secure bond of the corresponding filter materials.
  • the format belt 19 moves in the conveying direction 18 in the direction of a forming carrier, which is not shown in Fig. 1.
  • Fig. 2 shows a sectional view in the direction of the section A-A in a schematic representation.
  • the shape of the wrapping material 17 and the format strip 19 is shown in more detail. When using a wrapping material 17, this would rest on the format tape 19 in a conventional manner.
  • An enlarged view of the mixture 16 is shown in Fig. 3, in which granules 15 and hot glue threads 14 can be seen, which are crimped.
  • FIGS. 4 to 6 show another embodiment of a part of a stranding machine according to the invention.
  • the format tape 19 is executed plan and that as long as the corresponding filter material is applied. Only downstream in the conveying direction, the format strip is then shaped in accordance with a format device to produce a filter strand.
  • hot melt threads 14 and granules 15 are applied alternately, the outer layers consisting of corresponding threads. This creates a kind of sandwich structure.
  • the first layer of hot glue threads is applied over a width B.
  • the width B is sufficient to be wrapped around the entire further applied filter material.
  • the width B then corresponds to at least 2 ⁇ r, with r as the radius of the filter strand to be produced.
  • FIGS. 7 a) to 7 d A corresponding application of filter material, which occurs successively in a certain manner, is shown in FIGS. 7 a) to 7 d).
  • a layer 21 in the form of a nonwoven fabric from corresponding hot glue fibers 14 is applied to the format strip 19.
  • this layer is over the Suction air through this entire range of the format strip 19 passed therethrough, so that the hot glue threads 14, which form the fibrous web 21 are held on the format strip 19.
  • a mixture of hot glue threads 14 and granules 15 is applied in or on the nonwoven fabric 21.
  • only the middle part of the format belt 19 is acted upon by suction, so that the corresponding mixture 16 accumulates only in a partial area.
  • the filter material is moved by means of the format strip 19 in a forming apparatus in which the nonwoven fabric 21 and the format tape 19 is wound around the mixture 16.
  • the nonwoven fabric 21 is joined at the seam 23 by heating and accordingly the nonwoven fabric 21 is closed.
  • FIGS. 8 a) to 8 d Another embodiment is shown in FIGS. 8 a) to 8 d).
  • the two seams 23 are connected to each other by the action of heat.
  • the fiber strand which is produced in these exemplary embodiments can be distinguished by particularly high proportions of granules. Furthermore, the filter elements which are cut to length from the fiber strand produced, according to the embodiments of FIGS. 6 to 8 without a separate wrapping material. The granules are held by fibers accordingly.
  • a spinneret head 27 which is preferably used, carries the name Summit System from Nordson.
  • a format strip 19 which may be formed as a suction belt, so that connect the granules and the still slightly sticky filaments of the thermoplastic.
  • the format strip 19 moves in the direction of a strand forming device 22, 22 '(FIG. 9 or 13).
  • the strand is first heated and then cooled to plastically define the strand shape. In this way, a wrapping paper or a shell material 17 can be omitted.
  • a pure fiber layer can be applied again in order to envelop the rod completely with a fiber layer.
  • the rod formation which is indicated schematically in FIGS. 7 d) and 8 d), is preferably effected by means of heating and subsequent cooling.
  • Corresponding materials are as already shown in part all possible resins and polymers such as PP, PE, PBT, nylon, PC, CA, hot melt and biodegradable polymers from mixtures with starch. With regard to the corresponding materials, reference is made in full to EP 0 861 036 B1. All materials mentioned there should be included in full in the disclosure of this patent application.
  • the mixture 16 preferably comprises between 80 and 95 wt.% (By weight) of activated carbon granules or powders and 5 to 20 wt.% Of a fiber of one or more grades of a thermoplastic (resin or polymer).
  • the pellets or granules or powder are in a size of preferably 50 .mu.m to 4 mm ago.
  • the fibers exiting the nozzles 10 may be finite or endless. It is also possible to produce pure fiber filters from the materials mentioned. These may consist of a variety of fibers or of different types of fibers.
  • FIG. 9 shows a schematic three-dimensional representation of a stranding machine 24 according to the invention.
  • Hot melt glue 14 accordingly emerges from spinneret head 27, which comprises a plurality of nozzles, as shown for example in FIGS. 11 and 12, wherein a plurality of nozzles can also be arranged one behind the other in conveying direction 18 heated and conveyed through the respective nozzles in the hopper 26 and applied to a format strip 19 or a shell material 17 which is arranged on a format strip 19, wherein the format strip 19 is guided in a guide 25 in the lower region of the hopper 26 (see. Fig. 12).
  • two Granulatzu adjustmenten 28 are provided which terminate in feed tubes 12, which is supplied according to granules or pellets or powder on the format tape 19 given hot melt fibers.
  • feed tubes 12 which is supplied according to granules or pellets or powder on the format tape 19 given hot melt fibers.
  • a format follows 22 or 22 ', where first in a heating part 22 of the filter strand is formed to then cure in a cooling part of the format 22' the filter strand.
  • FIG. 10 shows an enlarged view of a part of FIG. 9.
  • Fig. 11 shows a side view of Fig. 9 in a schematic representation, wherein the nozzles 10 are more clearly visible and also the strand building area. These can be seen most clearly in Fig. 12, which is an enlarged view of FIG. 11.
  • Fig. 12 and the format cover 29 is shown in more detail with a corresponding handle 30.
  • the format 22 through which the corresponding Filter strand, which is not shown, is passed, is also shown in Fig. 12.
  • FIG. 13 shows another embodiment of a stranding machine 24 according to the invention, wherein a plurality of granule feeds 28 are provided in this exemplary embodiment, so that a better thorough mixing of the granulate with the corresponding hot glue fibers or fibers made of another thermoplastic material is possible.
  • a wrapping material or wrapping material 17 which is indicated by corresponding bobbins 31.
  • the format with respect to the heating part 22 and the cooling part 22 ' is formed separately.
  • Fig. 14 is an enlarged view of a portion of Fig. 13 for better illustration.
  • the main advantages of the method according to the invention and the device according to the invention lie in an adhesive-free connection of fibers and granules or of fibers per se. There is a very large amount of granules in relation to the fibers possible. Furthermore, the diameters of the fibers or filaments produced can be varied by simply exchanging the corresponding nozzles 10 or spinnerets on the spinneret head 27. It is possible to blend polymers accordingly to achieve improved fiber properties. Furthermore, the storage is simplified because fibers can be stored in the form of granules and not in the form of bales, so that less volume is needed in storage.
  • the temperatures and the delivery rates adjusted so that at the point of the blades, which are provided to cut or cut off the filter strand into filter rods, the fiber strand has already sufficiently cooled.
  • high strand speeds are possible.
  • Other materials may also be added to the filter strand in a simple manner such as flavors and fillers, etc.
  • no separate wrapping material is necessary.

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

Claims (22)

  1. Procédé pour la production d'une tige de filtre de l'industrie du tabac comprenant au moins un matériau de filtre (14, 15), comportant les étapes suivantes :
    - fusion d'au moins un premier type (14) de matériau de filtre,
    - passage du au moins un premier type (14) de matériau de filtre à travers au moins une buse (10),
    - application du au moins un premier type (14) de matériau de filtre sous forme de fibres sur un élément de transport (19), et
    - formation de la tige de filtre par transport du matériau de filtre (14, 15) sur l'élément de transport (19) s'étendant à travers un dispositif de formation (22, 22'), par le dispositif de formation (22, 22').
  2. Procédé selon la revendication 1, caractérisé en ce qu'au moins un deuxième type (15) de matériau de filtre est ajouté sous forme de pastilles, granulat et/ou poudre au au moins un premier type (14) de matériau de filtre consécutivement à l'expulsion de celui-ci à travers la au moins une buse (10).
  3. Procédé selon la revendication 2, caractérisé en ce que le au moins un deuxième type (15) de matériau de filtre est ajouté au moins un premier type (14) de matériau de filtre à un instant où le premier type (14) de matériau de filtre permet une adhérence du deuxième type (15) de matériau de filtre.
  4. Procédé selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que le au moins un premier type (14) de matériau de filtre est appliqué sur une bande de matériau d'enveloppement (17) déposée sur l'élément de transport (19).
  5. Procédé selon une ou plusieurs des revendications 1 à 4, caractérisé en ce qu'on applique, dans un premier temps, une couche (21) du au moins un premier type (14) de matériau de filtre.
  6. Procédé selon la revendication 5, caractérisé en ce qu'ensuite on applique du matériau de filtre (14, 15) supplémentaire sur la couche (21).
  7. Procédé selon la revendication 6, caractérisé en ce que le matériau de filtre (14, 15) supplémentaire comprend au moins en partie le deuxième type (15) de matériau de filtre.
  8. Procédé selon une ou plusieurs des revendications 5 à 7, caractérisé en ce que la couche appliquée (21) présente une largeur (B) suffisante pour envelopper le matériau de filtre (14, 15) supplémentaire.
  9. Procédé selon la revendication 8, caractérisé en ce que, dans le dispositif de formation, la couche appliquée (21) est enroulée autour du matériau de filtre (14, 15) supplémentaire.
  10. Procédé selon une ou plusieurs des revendications 5 à 7, caractérisé en ce qu'on applique ensuite une couche (21') du au moins un premier type (14) de matériau de filtre, le matériau de filtre (14, 15) supplémentaire étant ainsi enveloppé quasi complètement par les couches (21, 21').
  11. Procédé selon la revendication 10, caractérisé en ce que, dans le dispositif de formation (22, 22') les couches (21, 21') sont reliées entre elles.
  12. Procédé selon une ou plusieurs des revendications 2 à 11, caractérisé en ce que le au moins un deuxième type (15) de matériau de filtre est ajouté au moins un premier type (14) de matériau de filtre sur le trajet allant de la au moins une buse (10) jusqu'à l'élément de transport (19).
  13. Procédé selon une ou plusieurs des revendications 2 à 12, caractérisé en ce qu'on ajoute le au moins un deuxième type (15) de matériau de filtre au moins un premier type (14) de matériau de filtre après que le premier type (14) de matériau de filtre a été déposé sur l'élément de transport (19).
  14. Procédé selon la revendication 13, caractérisé en ce que, dans la direction de transport (18) de l'élément de transport (19), on applique plusieurs fois l'un après l'autre un matériau de filtre (14, 15) des premier et/ou deuxième types.
  15. Dispositif pour la production d'une tige de filtre de l'industrie du tabac comprenant un élément de transport (19) sur lequel peut être appliqué du matériau de filtre (14, 15) et un dispositif de formation de tige (22, 22') destiné à former une tige de filtre à partir du matériau de filtre, l'élément de transport (19) s'étendant dans le dispositif (22, 22') de formation de tige, caractérisé en ce qu'est prévue au moins une buse (10) à travers laquelle un matériau de filtre (14) fluidifié ou plastifié d'au moins un premier type peut être amené sur l'élément de transport (19).
  16. Dispositif selon la revendication 15, caractérisé en ce qu'entre l'élément de transport (19) et le matériau de filtre (14, 15) est disposée une bande de matériau d'enveloppement (17).
  17. Dispositif selon la revendication 15 et/ou 16, caractérisé en ce qu'est prévue respectivement une paire de buses (10) orientées en partie l'une vers l'autre.
  18. Dispositif selon une ou plusieurs des revendications 15 à 17, caractérisé en ce que, dans la direction de transport (18) de l'élément de transport (19), sont prévues plusieurs buses (10) l'une derrière l'autre.
  19. Dispositif selon une ou plusieurs des revendications 15 à 18, caractérisé en ce qu'est prévu au moins un dispositif d'alimentation (12, 28) d'au moins un deuxième type (15) de matériau de filtre.
  20. Dispositif selon la revendication 19 caractérisé en ce que le au moins un dispositif d'alimentation (12, 28) est agencé pour transporter le matériau de filtre (15) du deuxième type sur un jet de matériau de filtre (14) du au moins un premier type sortant des buses (10).
  21. Dispositif selon une ou plusieurs des revendications 15 à 20, caractérisé en ce que le dispositif de formation de tige (22, 22') est apte à être réchauffé et/ou refroidi au moins partiellement.
  22. Procédé pour produire un filtre de cigarette, comprenant un procédé selon une ou plusieurs des revendications 1 à 14, caractérisé en ce que le filtre de cigarette est détaché de la tige de filtre par coupe à longueur.
EP04017038A 2003-09-03 2004-07-20 Procédé et dispositif pour la production d'une tige de filtre Not-in-force EP1512336B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04017038A EP1512336B1 (fr) 2003-09-03 2004-07-20 Procédé et dispositif pour la production d'une tige de filtre
PL04017038T PL1512336T3 (pl) 2003-09-03 2004-07-20 Sposób i urządzenie do wytwarzania pasma filtra

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03019976 2003-09-03
EP03019976 2003-09-03
EP04017038A EP1512336B1 (fr) 2003-09-03 2004-07-20 Procédé et dispositif pour la production d'une tige de filtre

Publications (2)

Publication Number Publication Date
EP1512336A1 EP1512336A1 (fr) 2005-03-09
EP1512336B1 true EP1512336B1 (fr) 2007-05-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04017038A Not-in-force EP1512336B1 (fr) 2003-09-03 2004-07-20 Procédé et dispositif pour la production d'une tige de filtre

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EP (1) EP1512336B1 (fr)
PL (1) PL1512336T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103720041A (zh) * 2013-12-28 2014-04-16 蚌埠卷烟材料厂 嘴棒香料加香喷雾装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH308903A (de) * 1952-09-09 1955-08-15 Mueller Paul A Verfahren und Maschine zur Herstellung eines Filterstranges aus einem wässrigen Faserbrei.
US3050430A (en) * 1959-11-12 1962-08-21 Eastman Kodak Co Jet and method of filter manufacture
GB1100727A (en) * 1964-11-27 1968-01-24 Bakelite Xylonite Ltd Improvements in or relating to permeable foamed macromolecular material
NL6514912A (fr) * 1965-11-16 1967-05-17
US3704192A (en) * 1966-09-21 1972-11-28 Celanese Corp Process of making tobacco smoke filters from extruded polymer and binder
US4180536A (en) * 1978-03-13 1979-12-25 Celanese Corporation Process for extruding plasticized open cell foamed cellulose acetate filters

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EP1512336A1 (fr) 2005-03-09
PL1512336T3 (pl) 2007-09-28

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