EP1464238B1 - Procédé et dispositif pour la préparation de fibres séparées destinées à la production de filtres - Google Patents

Procédé et dispositif pour la préparation de fibres séparées destinées à la production de filtres Download PDF

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Publication number
EP1464238B1
EP1464238B1 EP03007672A EP03007672A EP1464238B1 EP 1464238 B1 EP1464238 B1 EP 1464238B1 EP 03007672 A EP03007672 A EP 03007672A EP 03007672 A EP03007672 A EP 03007672A EP 1464238 B1 EP1464238 B1 EP 1464238B1
Authority
EP
European Patent Office
Prior art keywords
fibers
fiber
fibres
separating
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
EP03007672A
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German (de)
English (en)
Other versions
EP1464238A1 (fr
Inventor
Sönke Horn
Thorsten Scherbarth
Arnold Peter-Franz
Stephan Wolff
Alexander Buhl
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 ES03007672T priority Critical patent/ES2264744T3/es
Priority to EP03007672A priority patent/EP1464238B1/fr
Priority to DE50304210T priority patent/DE50304210D1/de
Priority to AT03007672T priority patent/ATE332651T1/de
Priority to EP04003359A priority patent/EP1464241B1/fr
Priority to DE502004001630T priority patent/DE502004001630D1/de
Priority to ES04003359T priority patent/ES2270198T3/es
Priority to EP06011475A priority patent/EP1698241A1/fr
Priority to PL04003359T priority patent/PL1464241T3/pl
Priority to AT04003359T priority patent/ATE341233T1/de
Priority to JP2004104124A priority patent/JP2004337160A/ja
Priority to JP2004102611A priority patent/JP4512398B2/ja
Priority to PL366816A priority patent/PL210055B1/pl
Priority to US10/815,933 priority patent/US20040235631A1/en
Priority to US10/815,959 priority patent/US20050011529A1/en
Priority to CNA2004100550614A priority patent/CN1568844A/zh
Priority to CN200410055060A priority patent/CN100584227C/zh
Publication of EP1464238A1 publication Critical patent/EP1464238A1/fr
Priority to US11/214,934 priority patent/US7318797B2/en
Application granted granted Critical
Publication of EP1464238B1 publication Critical patent/EP1464238B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • A24D3/0208—Cutting filter materials

Definitions

  • the invention relates to a process for the preparation of finite fibers for use in the manufacture of filters of the tobacco processing industry.
  • the invention further relates to a finite fiber conditioning device for use in the manufacture of filters of the tobacco processing industry comprising at least one finite fiber singulation device and at least one metering device, at least one means for transporting the finite fibers from the at least one metering device at least one device is provided for separating.
  • a method for the preparation of filter materials and a corresponding device for the preparation of filter materials for the production of filters of the tobacco processing industry is known from GB 718 332. This will be done by means of a tobacco cutting machine Chips are made of a material and these a stranding machine, similar to a cigarette rod machine supplied, wherein the snippets are impregnated with a chemical agent to prevent unwanted taste and prevent the snippets from falling out of the end pieces of the corresponding filter produced.
  • the cut chips are conveyed by means of a drum in the effective range of a spiked roller and conveyed by the spiked roller from the drum on a conveyor belt to be subsequently fed to a further conveyor drum, from which the chips are knocked out by a further spiked or racket roller and a Be fed format in which the filter strand is formed with a wrapping strip.
  • the snippets of materials such as paper, cellulose, textiles, synthetic materials or the like, have a similar structure as cut tobacco.
  • GB-A-2 145 918 From GB-A-2 145 918 several different devices for the production of cigarette filters are known.
  • the devices have in common that filter material of infinite length is guided to a drum which strikes fibers from the filter material of infinite length. Subsequently, either on a conveying element, such as a conveyor belt or a filler material, the fibrous filter material eufgeschauert and conveyed to a strand-building device.
  • a conveying element such as a conveyor belt or a filler material
  • the fibrous filter material eufgeschauert and conveyed to a strand-building device.
  • the fiber material torn out of the infinite fitter material strand is conveyed by means of an air flow into a strand building device.
  • US Pat. No. 3,644,078 discloses a process for the preparation of filter material for the production of tissue for cigarette filters, in which initially the corresponding material is separated and subsequently the separated material is transported by means of a Venturi nozzle in the direction of a nonwoven production device. which produces a flat fleece.
  • US-A-3 050 427 discloses an apparatus and a process for producing a nonwoven web of mineral fibers, which are first comminuted into longer pieces, brought together, then shredded into smaller pieces and then crumbled into a nonwoven web become. The fleece can then be pressed.
  • US-A-2 931 076 discloses an apparatus and a method for singulating fibers which, after singulation on a belt, are peeled open.
  • the appearance of a stream of isolated fibers resembles that of a snowstorm, that is, a stream of fibers that has a homogeneous statistical distribution of fibers both spatially and temporally.
  • the complete singulation of the fibers means that substantially no groups of fibers that are connected to each other are present anymore. Only after the separation of the fibers is a composite of the fibers, for example, a nonwoven structure produced again. By dissolving the fiber groups by separating the fibers into individual fibers, it is then possible to produce a nonwoven which contains no bridges and cavities.
  • the singulated fibers When transporting the singulated fibers occurs at least partially by means of an air flow, the singulated fibers can be transported without forming fiber groups.
  • a particularly preferred embodiment of the method according to the invention is present when the separation of the fibers occurs at least partially by means of an air flow. As a result, the degree of separation is very high. A lot of air is used to separate the fibers. In the fluidized bed area, excess air is then at least partially separated from the fiber stream.
  • the singulation of the fibers occurs at least in part by passing through openings of a device provided with a plurality of openings, a high singulation efficiency is possible.
  • the feeding of the fibers occurs at least partially by means of an air flow, pre-separated fibers remain substantially isolated during feeding.
  • the separated fibers and also the fiber groups, which are prepared before (essentially complete) separation of the fibers are supplied essentially only with transport air or an air stream.
  • Pre-separation of finite fibers present in a composite preferably takes place.
  • a hammer mill or a bale breaker is preferably used.
  • a hammer mill is used when a felt is provided.
  • a bale breaker is used when a fiber bale is provided.
  • At least one metering step is provided, by means of which the quantity of fibers, in particular that which can be predetermined, is metered. It may be provided in this case a predosing and / or a main dosage. By means of the pre-metering, the throughput of the fibers to be processed is roughly adjusted. The main dosage allows a finer adjustment.
  • cellulose acetate, cellulose, carbon fibers and multicomponent fibers, in particular bicomponent fibers are used as fiber materials Question.
  • components in question reference is made in particular to DE 102 17 410.5 of the Applicant.
  • the different fiber types are mixed. It is also possible to add at least one additive.
  • the additive is, for example, a binder such as latex or granular material, which binds components of the cigarette smoke particularly effectively, such as, for example, activated carbon granules.
  • a complete separation takes place with or following a second or third dosing step, which is made possible after a third dosing step, in particular when providing a pre-dosing.
  • the fiber length is smaller than the length of the filter to be produced.
  • the length of the fibers should therefore be between 0.1 mm and 30 mm and in particular between 0.2 mm and 10 mm.
  • the length of the filter to be produced is a conventional filter for a cigarette or a filter segment in the multi-segment fittem of cigarettes.
  • the average fiber diameter in the range of 10 to 40 .mu.m, in particular 20 to 38 microns and more preferably between 30 and 35 .mu.m, a very homogeneous filter according to the invention preparation can be produced.
  • a method for the production of filters of the tobacco processing industry comprising a method according to the invention for the preparation of filter material of the type described above is provided by the fact that also subsequently a fiber strand is formed and the strand is divided into filter rods.
  • a fleece formed the isolated finite fibers.
  • finite fibers these are transported via a flow and fed to a suction belt conveyor.
  • a fleece forms on the surface of the suction belt conveyor.
  • the suction belt conveyor is specially designed to hold the finite fibers, for example, a relatively small diameter, on the suction belt.
  • the strand structure corresponds essentially to the strand construction of a tobacco rod, although corresponding measures or variations are introduced in order to convert the material of the finite fibers, which is different in size and structure, into a homogeneous strand in comparison to tobacco fibers.
  • a filter material processing apparatus for use in the manufacture of filters of the tobacco processing industry, comprising at least one apparatus for singulating the filter material and at least one metering device, wherein at least one means for feeding the filter material from the at least one metering apparatus to the at least one device for separating is provided, wherein the processing device is further developed in that the processing device is designed to process the filter material comprising finite fibers, and wherein the at least one device for separating the finite fibers allows a substantially complete separation.
  • a filter produced from the appropriately prepared filter material can be realized with very homogeneous properties.
  • the means for supplying comprises an air flow, whereby an even more homogeneous filter can be produced.
  • an air flow through and / or in the device is required for separating the fiber.
  • the degree of separation is very high. If the device for separating comprises a plurality of openings through which the fibers can emerge from the device in isolated fashion, a particularly effective treatment device is provided.
  • a particularly easy to implement dosing device comprises a chute from which a rotating roller carries out fibers. If a pair of feed rollers is provided in the lower part of the metering device, filter material can be metered in a gentle manner.
  • the device for separating by interaction of at least one rotating element, at least one provided with passages element and a stream of air allows separation of the fibers.
  • the metering device or the at least one metering device additionally has a separating function, whereby the degree of separation of the entire processing device can be further increased.
  • a mixing device is preferably provided, it is possible to prepare different materials and also different fibers.
  • the fibers can be cellulose fibers, thermoplastic starch fibers, flax fibers, hemp fibers, flax fibers, sheep wool fibers and cotton fibers or, as already described above, multiple-component fibers.
  • the mixing device additionally enables separation and / or metering of the fibers.
  • the treatment device is designed such that finite fibers having a length which is smaller than that of a filter to be produced, are processed.
  • the processing device is preferably configured in such a way that to process finite fibers with a mean fiber diameter in the range of 10 to 40 microns, especially 20 to 38 microns.
  • a particularly preferred fiber diameter is in a range of 30 to 35 microns.
  • a filter manufacturing device comprises a processing device according to the invention which has been described above.
  • Fig. 1 shows a schematic representation of a process flow from the preparation to the strand production of a filter tobacco processing industry.
  • a fiber preparation 1 takes place, in which primarily the transfer of all compressed forms of supply of fibrous materials into an airy-wooly state is carried out. This should be loosened fiber groups. In addition to these fiber groups, individual fibers can already be produced.
  • the fiber preparation 1 is carried out, for example, with a device according to FIG. 2. Such a device is known per se.
  • the festgepreßten forms of delivery include, for example, fiber bales and fiber mats (10) or a fiber felt (10). Fiber bales are usually unpacked by means of bale breaker and fiber mats (10) or fiber felt (10) by means of a hammer mill 13th
  • a bale breaker for fibrous materials is obtainable, for example, from the company Trützschler and a hammer mill for fibrous materials, for example from the company Kamas.
  • a predosing 2 is done.
  • a predosing 2 is possible, for example, with the device according to FIG. 3.
  • the predosing serves a coarse dosage of the fiber material and a further separation to the effect that the present in groups or as a dense packing fibers are further loosened. Also at this point more completely separated fibers can arise.
  • a main metering or metering 4 alone can be carried out. Whether a pre-dosage 2 is necessary depends on the nature of the fiber preparation.
  • the goal of the metering 4 and the predosing 2 is the realization of a defined stable uniform mass flow of fibers and in addition also already partly pre-separation.
  • the dosing step 4 leads to a further separation of the fiber groups. It is possible to provide a step of mixing and / or dosing 3 before the dosing step 4. In this step, a plurality of filter materials, as indicated in Fig. 1 by the leading into the box 3 ways, and optionally an additive such as a binder, for example, or an activated carbon granules are mixed.
  • a binder for example, or an activated carbon granules
  • the various fiber materials are mixed continuously or discontinuously.
  • a continuous mixing device 111 is shown.
  • the mixing device 111 also performs a buffer storage function for the pulps.
  • additives in solid or liquid form. These additives serve to bond the fibers together and / or favorably influence the filtration properties of the fiber filter.
  • the discharge from the mixing device 111 is defined, whereby a metering function is given.
  • a metering function is given.
  • the fiber material is fed to a singulating step 6.
  • the goal of the singulation is a complete dissolution of the remaining fiber groups in single fibers. This serves to regroup the individual fibers in the subsequent step of strand production 7 so that an optimum nonwoven structure can arise in which no bridges and cavities are included.
  • fiber can lay one another by fiber and so a fleece can be formed. It is thus possible according to FIG. 1 to use up to three dosing steps. It can also be preceded by further dosing stages of singling.
  • the fiber stream emerging from the singling consists of individual fibers which are guided in air or in an air stream.
  • the appearance of the air flow with the entrained fibers or a fiber flow laden with air is very similar to that of a snowstorm.
  • the isolated fibers are fed, for example, with a fluidized bed to the suction belt of a special suction belt conveyor.
  • strand making 7 a strand of constant cross-section is produced, the cross-section being, in particular, constantly square, at the same time producing a uniform density.
  • the fibers are present in a fleece-like structure.
  • the finished fiber filter strand has sufficient hardness, draw resistance, constant weight, retention and further processing.
  • FIG. 2 shows a fiber preparation device 114.
  • a fiber field 10 is conveyed by means of feed rollers 11 into the effective region of a hammer mill 13 with hammers 12.
  • the hammers 12 of the hammer mill 13 are housed in a housing 14.
  • the hammers 12 strike the fiber felt and thus form fiber groups 16.
  • the fiber groups 16 are transported further in a tube 18 by means of air flow 17.
  • the result is a loaded with fiber groups air flow 19.
  • already isolated fibers may have arisen.
  • the hammers 12 of the hammer mill 13 rotate in the direction of fall, so that the fibers are ejected tangentially in the rotor rotation direction from the housing 14 of the hammer mill 13.
  • a predosing 113 is shown schematically.
  • An air stream loaded with fibrous material 41 is fed to a separator 20, which separates the fibrous material 41 from the air flow, so that Fiber material 42 through the slot 21 into the storage container 22 falls.
  • two spiked rollers 23 are arranged in the lower part of the storage container 22.
  • the spiked rollers 23 rotate slowly and feed the fiber material to a third spiked roller 24.
  • the third spiked roller 24 rotates rapidly and rips fiber groups out of the fiber material.
  • These fiber groups enter the funnel 25 by sliding down.
  • a rotary valve 26 is arranged. The fiber groups slip into the cells of the rotary valve 26 and are conveyed into the channel 27.
  • the channel 27 there is an air flow 28, which takes the output into the channel 27 fibers or fiber groups with it.
  • the air stream 28 also already carries along from the process recycled fibers, which are fed to the fiber groups.
  • the airflow 29 is fully loaded with fibers and fiber groups. With the air flow, a fiber / fiber group mixture 29 is transported.
  • the fiber / fiber group mixture 29 is introduced by means of an air flow into the separator 30 e.g. transported a rotary separator. There, the fiber / fiber group mixture is separated from the air flow.
  • the separated fiber material 31 enters the stowage shaft 32 and falls in this down to the feed rollers 34. It can also be provided several pairs of rollers or a pair of feeder belts or several Einzugsb sectione. Vibrating elements 33 are provided in a section of the stacking shaft 32, by means of which a complete supply of the fiber / fiber group mixture 31 to the infeed rollers 34 is made possible.
  • the feed rollers 34 convey the fiber material between the scrapers 35 in the metering channel 36 formed by them.
  • a rotating roller 37 for example a spiked roller, tears the fibers from the fiber material out and enters this in the channel 38.
  • In the channel 38 prevails an air flow 39, which detects the fibers or the fiber material 40 and transported accordingly in the arrow direction.
  • the mass flow rate of the metering channel 36 is specified.
  • FIG. 5 shows a mixing device 111 in a schematic, three-dimensional representation.
  • Various fiber materials 43 and 44 as well as other fiber materials or additives 45 in liquid or solid phase are introduced into the mixing chamber 46.
  • the fibrous materials may be cellulosic fibers, thermoplastic starch fibers, flax fibers, hemp fibers, flax fibers, sheep wool fibers, cotton fibers or multicomponent fibers, in particular bicomponent fibers, having a length smaller than the filter to be produced and having a thickness, e.g. in the range of 25 and 30 microns.
  • cellulose fibers stora fluff EF untreated from StoraEnso Pulp AB can be used, which have an average cross section of 30 ⁇ m and a length of between 0.4 and 7.2 mm.
  • synthetic fibers such as, for example, bicomponent fibers, fibers of the Trevira type, 255 3.0 dtex HM with a length of 6 mm from Trevira GmbH can be used. These have a diameter of 25 microns.
  • synthetic fibers cellulose acetate fibers, polypropylene fibers, polyethylene fibers and polyethylene terephthalate fibers may be used.
  • the flavor or the smoke influencing materials can be used as carbon reactive granules or flavoring agents and also binders, by means of which the fibers can be glued together.
  • the fiber material 43 and 44 or the corresponding additives 45 introduced into the mixing chamber 46 are fed to rollers 50 to 52, which rotate at suitable rotational speeds during the filling and the mixing process.
  • the position of the rollers 50-52 is preferably adjustable both horizontally and vertically. Thus, the center distances of the rollers are mutually adjustable. There can also be several Rollers can be arranged in different floors.
  • the components to be mixed are detected by the rollers 50 - 52, accelerated and swirled in the mixing chamber 46. The confusion causes a mixing of the components.
  • the residence time of the components to be mixed in the mixing chamber 46 is adjustable by the geometric nature of the screen 47.
  • the residence time of the components to be mixed in the mixing chamber 46 is determined by the position of a thrust diaphragm, by means of which the openings of the screen 47 can be partially or completely closed.
  • the thrust diaphragm is not shown in the figure.
  • the mixture of fibers 53 and, in general, the mixture 53 is conveyed through the openings of the screen 47 into the chamber 54. This can be done continuously or at intervals.
  • the chamber 54 is preferably pivotable and is traversed by an air flow 55.
  • the air flow 55 detects the mixture 53 and tears it with it.
  • the laden air stream 56 leaves the chamber 54 and carries the mixture 53 on.
  • FIG. 6 shows a diagrammatic illustration of a separating device 115 in connection with a metering device 112.
  • the metering device 112 substantially corresponds to the metering device of FIG. 4, although the vibration elements 33 are shown as separate sections of the chute 32 and the strippers 35 have a slightly different shape than in FIG. 4.
  • the fiber material torn out of the dosing channel 36 by the rotating roller 37 is fed directly to a dicing chamber 61. About the speed of the feed rollers 34, the mass flow rate of the metering 36 is determined.
  • the entire separating device is traversed by air. This flow 133 is caused by the negative pressure at the fluid bed end. This negative pressure is created on the one hand by the guided in the suction nozzle 71 air flow 72 and on the other by the flow in the suction belt conveyor, which is arranged at the fluidized bed end 69 and is not shown in this figure.
  • the fibers or groups of fibers move under gravity and flow through the air flow 63 and air inlet 63, respectively, through the ventilation openings 62 into the area of the rollers 60.
  • the rollers 60 of the row of rollers 60 engage the ununsulated fibers (and of course already partially isolated present fibers), accelerate them and beat them against the sieve 64 of the separation chamber 61.
  • a sieve with corresponding sieve treads and perforated or round rod can be used.
  • the fiber groups are dissolved in Einzelfasem and finally pass through the sieve 64. That is, the fibers are detected after sufficient separation of the leading through the sieve flow 133 and passed through the sieve 64 or sucked.
  • the number of revolutions of the rollers 60 and the area as well as the magnitude of the flow 133 determine the mass flow rate of the singulating chamber 61 of the openings of the screen 64.
  • the separated fibers 65 reach the fluidized bed 66. There they are detected by a at the air nozzle, which is designed as a nozzle bar 67, exiting air flow 68 and moved on the fluidized bed 66. There may also be provided a plurality of nozzle strips 67. Mainly the negative pressure applied at the fluidized bed end 69 ensures a sufficient flow 133 for conveying the separated fibers to the fluidized bed end 69.
  • the flow 133 is partially separated by the flow divider 70 at the fluidized bed end 69 of the fiber flow and enters the suction nozzle 71.
  • the flow generated by the negative pressure and the nozzle bar 67 withdraws the air separation chamber 61. Via the ventilation openings 62 in the separation chamber 61 air 63 flows after.
  • the separated fibers are then transported in the air flow of the flow 133, which previously served for the separation. This happens approximately perpendicular to the fluidized bed and then along the same.
  • the flow 133 can be supplemented by further air flows, for example air flow 68.
  • the fluidized bed 66 is followed by a suction belt conveyor, which is not shown in this figure (see in particular FIGS. 10 and 12).
  • a suction belt conveyor On the suction belt, the scattered fibers are heaped up. It can also be used two suction belts or even more suction belts.
  • Fig. 7 shows a further embodiment of a separating device according to the invention.
  • only one roller 60 is provided in this embodiment.
  • a plurality of air streams 74 are provided in the separation chamber 61, which are generated by air nozzles 73. Multiple air nozzles 73 may be used as shown in FIG. These need not only be arranged on the chamber lateral surface, but may also be distributed in the separating chamber 61.
  • the air streams supply the fibers of the roller 60. Instead of a roller, several rollers can be used.
  • the function of the roller 60 or a plurality of rollers 60 corresponds to the function of Fig. 6.
  • By the air currents 74 is an increased turbulence in the separation chamber 61 instead, so that the separation of the fibers compared to the embodiment of FIG. 6 is improved ,
  • the separated fibers 65 pass through the screen 64 as in the example of FIG. 6.
  • FIG. 8 shows a further embodiment of a separating device 115 according to the invention.
  • the air flow is generated by the vacuum applied to the nonwoven bed end 69 and the air flow 68 flowing out of the nozzle bar 67. It can also find multiple nozzle strips use.
  • the main air flow begins above the screen 64, passes through the rows of agitators 82 and 83 and the screen 64. Thereafter, the main air flow enters the fluidized bed section 66 and passes through the fluidized bed 66 to its end.
  • the essentially unaccompanied fiber material or fiber / fiber group mixture 31 passes above the sieve 64 into the housing. This may also be inclined at an angle instead of the representation in FIG. 8, such as, for example, at 45 ° to the horizontal.
  • the fiber / fiber group mixture 31 passes under the influence of gravity and under the influence of the main air flow in the region of the stirring tools 82 and 83.
  • the rows of stirrers 82 and 83 consist of successively arranged stirrers, which drive a suitable stirring tool.
  • the stirring tools are offset by 90 ° to each other. There may also be other displacement angles.
  • the unclarified fiber groups are ruptured by the rotating stirrers, accelerated and struck against the screen 64 of the housing. Instead of the screen 64 can also be a perforated plate or a Rundstabgitter use.
  • the fiber groups or the fiber group mixture 31 is thrown against the sieve 64 until they have dissolved in Einzelfasem and the sieve 64 have passed in the main air flow. Thereafter, as in the previous embodiments, the fibers reach the fluidized bed 66 and a suction belt conveyor which is not shown in FIG.
  • the separating device shown in FIG. 8 is known with respect to at least the rows of stirrers 82 and 83 from EP 0 616 056 B1 of M + J Fibretech A / S, Denmark.
  • FIG. 9 A further preferred embodiment of the separating device 115 according to the invention is disclosed in FIG. 9 in a schematic three-dimensional representation.
  • the essentially unaccurate fiber material or fiber / fiber group mixture is transported by the air streams 76 into the sieve drums 78. This is done via lateral openings 77 in the housing 79.
  • the fiber material is blown in the direction of the longitudinal axes of the sieve drums 78. Due to the blowing in of the fiber material on both sides in the counterclockwise direction results in a circumferential annular flow 80.
  • the ring flow 80 is superimposed by a flow normal or substantially perpendicular to this, which is caused by a negative pressure applied to the web bed end 69 and an air flow 68.
  • the negative pressure prevailing at the fluidized bed end 69 is produced by the negative pressure in a suction belt conveyor, not shown, which is arranged at the fluidized bed end 69 and, secondly, at the air flow 72 which is conveyed through the suction connection 71.
  • the normal flow starts above the sieve drums 78 and passes through the sieve drums 78 via their shell openings.
  • the normal flow then enters the fluidized bed region 66 and passes through it to the end 69, where a portion of the normal flow at the wedge 70 is separated from the fibers.
  • the unaccurate fiber material passes in the drums 78 on the inner circumferential surfaces of the drums 78.
  • the drums 78 rotate in a direction of rotation 81 of the screening drums 78 in a clockwise direction.
  • the substantially unaccurate fiber material stored on the drum shell surfaces is supplied to the separating rollers 85 by the rotating drums.
  • the separating rollers 85 rotate in the direction of rotation 84 of the separating rollers 85 in the counterclockwise direction. It would also be possible as an alternative, a clockwise rotation.
  • the separating rollers 85 and needle rollers detect the unclassified fiber groups and tear them and accelerate them.
  • the fiber groups are thrown against the inner surface of the drums 78 until they have dissolved into individual fibers and have passed through the shell openings, i. be detected by the air flow (the normal flow) and guided by the screen drum 78 or sucked.
  • a drum with perforated plates or Rundstabgitter can be provided.
  • the fibers or individual fibers are detected by an air flow and guided or sucked through the radial openings of the drum.
  • the air flow conveys the fibers down to the fluidized bed. Once the fiber-laden flow has reached the fluidized bed, it is deflected and guided along the curved fluidized bed. Due to the centrifugal forces acting on the fibers move the Fibers to the curved guide wall and flow to the suction belt conveyor.
  • the air flowing in above the fibers is deposited on the wedge or separator 70 and discharged via the suction connection 71.
  • Fig. 9 the corresponding fiber streams 75 are shown schematically. There are isolated fibers detected by an emerging from the nozzle bar 67 air flow 68 and also fed to the fluidized bed 69, as well as the random on the fluidized bed 66 passing fibers through the air flow 68. It can also be provided several nozzle strips.
  • the separating device shown in FIG. 9 corresponds at least in part to those disclosed in WO 01/54873 A1 or US Pat. No. 4,640,810 A of Scanweb, Denmark, or USA.
  • FIG. 10 shows a schematic representation of a strand production machine 110.
  • FIG. 11 shows a part of the strand production machine 110 in a plan view in the direction of the arrow A and FIG. 12 shows a side view of the strand production machine 110 according to FIG. 10 in the direction of the arrow B.
  • the unaccurate fiber material passes via the stowage chamber 32 to the metering device 34, which in this example is a pair of intake rollers 34 with a rotating roller 32.
  • the direction of the material entry 100 is in FIG. 11 in the drawing plane downwards, as shown schematically there.
  • the unclarified fiber material is singulated in the separation chamber 61.
  • the air flow generated by the air flow in the suction nozzle 71 and the air flow 72 'in Saugband makeuper 89 on the fluidized bed 66 promotes the individual fibers 65.
  • the air flow 72 in the suction 71 is with respect to their direction in Fig. 11 up out of the plane out, as shown in FIG 11 is shown.
  • the air stream 72 also removes excess fibers.
  • the air flow 72 ' is used to hold the fibers 65 which have escaped on the suction belt 89.
  • the singulated fibers 65 move on the fluidized bed 66 toward the fluid bed end 69 where, as shown in the figures, a suction belt conveyor 89 is disposed.
  • a suction belt conveyor 89 prevails by continuous air suction vacuum. This air suction is shown schematically by the air stream 72 '.
  • the negative pressure sucks the separated fibers 65 and holds them on the air-permeable suction belt of the suction belt conveyor 89.
  • the separated fibers 65 are snapped onto the air-permeable suction belt of the suction belt conveyor 89 accordingly.
  • the suction belt 116 moves in the direction of strand production machine 110, that is to say in FIG. 10 to the left.
  • a fiber cake 86 which increases linearly with respect to the stranding machine 110, is formed on the suction belt.
  • the accumulated fiber stream 86 has different strengths and is trimmed at the end of the filling zone of the suction belt conveyor 89 by trimming by a trimming device 88 to a uniform thickness.
  • the trim device 88 may be a mechanical one such as trimmer discs or a pneumatic one by means of, for example, air nozzles. The mechanical trim is known per se in cigarette rod making machines.
  • the pneumatic trimming is done in such a way that horizontally at the end of the fiber stream 86, a nozzle is arranged, from the one Air jet exits and tears a portion of the fiber stream 86, so that excess fibers 87 are discharged. It can find a spot jet nozzle or a flat jet nozzle use.
  • the fiber stream 86 is split into a trimmed fiber strand 90 and a strand of excess fibers 87. It is also possible to grasp and tear away all fibers below a trim level from a jet. The excess fibers are returned to the fiber conditioning process and later re-formed into a fiber strand.
  • the trimmed fiber strand 90 is held on the suction belt 116 and moved in the direction of the stranding machine 110.
  • the trimmed fiber strand 90 is a loose nonwoven fabric that is compacted by a compacting belt 92.
  • the compression belt 92 may also find a role use. It can also find multiple bands or roles use.
  • the compression belts 101 are shown, which are conical to each other and in Saugband york with the fiber cake.
  • the toothed shape of the compaction belts 101 create zones of different density in the compacted fiber cake. In the higher density zones, the filter strand is cut later.
  • a compression belt 92 is provided for compressing in the vertical direction. Instead of the compression belt 92 and rollers may be provided.
  • the trimmed and compacted fiber strand 91 is transferred to the stranding machine 110.
  • the transfer takes place by the detachment of the compacted fiber strand 91 from the suction belt 116 and the application of the fiber strand 91 onto a format belt of the stranding machine 110.
  • the format belt is not shown in the figures. This can be a usual format tape act, which is also used in a normal filter rod machine or cigarette rod machine use.
  • the transfer is supported by a nozzle 93 directed from above onto the compacted fiber strand 91, through which an air stream 94 passes.
  • a fiber filter strand 95 is produced, wherein from a bobbin 98, a wrapping material strip 99 is wound around the fiber material as usual.
  • a certain internal pressure builds up in the fiber filter strand 95.
  • binder components contained in the fiber mixture are superficially heated and fused. Accordingly, the outer layers of bicomponent fibers can be melted, so that a connection between the fibers is formed.
  • the curing device 96 may also include a microwave heater, a laser heater, heating plates or sliding contacts.
  • the individual fibers combine in the fiber strand and merge superficially.
  • the melted areas harden again.
  • the resulting lattice framework gives the fiber strand stability and hardness.
  • the cured fiber filter strand 95 is cut into fiber filter rods 97. The curing of the fiber filter is possible even after cutting into the fiber filter rods 97.
  • FIG. 13 shows a three-dimensional schematic illustration of a fifth embodiment of the separating device according to the invention, which is similar to that of FIG. 9.
  • a granule metering device 120 is also provided.
  • the Granulatdosiervorraum 120 scatters over the Whole width of the separating device 115 granules between the sieve drums 78 in the separating device 115.
  • the interspersed granules 121 mixed in the field of sieve drums 78 with the emerging from the sieve drums 78 fibers.
  • the result is a mixture of isolated fibers and granules, which is in the air flow on the fluidized bed to Saugstrang makeuper, which is arranged in the conveying direction behind the Saugstrangende 79.
  • FIG. 14 shows a schematic cross-sectional representation of a further separating device 115 according to the invention.
  • the air guidance is improved, so that more uniform fiber streams 75 or 75 'are produced.
  • An airflow 122 enters the device at the top of the screen drum 78.
  • the separated fibers emerging from the screening drums 78 pass into channels 123 and 124 and are guided downwards into the region of the fluidized bed 66 by the corresponding air flow.
  • the fiber streams 75 are combined to form a fiber stream 75 '.
  • a majority of the transport air is separated from the fiber stream, which is represented by the air stream 122 '.
  • a suction nozzle 125 is provided in the rolling space of the fluidized bed 66.
  • the fiber stream 75 passes after the union of the two fiber streams 75 in a channel formed by the fluidized bed 66 and the separator 127. Depending on the process, it may be possible at this point that a flow has already formed, or it may also be the case that the fibers are still isolated.
  • the fiber stream 75 ' is then transported to the fluid bed end 69 and the suction belt conveyor 89 by the negative pressure applied to the suction belt conveyor 89.
  • Fig. 15 shows a corresponding schematic sectional view, which is similar to that of FIG. 14.
  • a granule dosing device 120 is arranged above the sieve drums 78. From two sampling nozzles 78 granules 121 is fed to the respective sieve drums. The formed fiber / granular stream 128 transported in the channels 123 and 124 becomes combined in the lower region of the fluidized bed 66 and to a fiber / granular stream 128 '.
  • FIG. 16 illustrates another embodiment of a dicing device 115 according to the invention.
  • the addition of granules 121 from the granule dosing device 120 is performed near the fluidized bed end 69.
  • Granules 121 reach an acceleration element 129, which may be a roller, a brush or a nozzle.
  • the accelerated granules 121 pass through the line 130 into the fluidized bed, namely into a vertical fluidized bed section 131.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Nonwoven Fabrics (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Glass Compositions (AREA)

Claims (29)

  1. Procédé pour la préparation de matériau pour filtre (10, 29, 31, 40-44, 53, 65, 75) destiné à être employé dans le cadre de la fabrication de filtres (95, 97) de l'industrie de transformation du tabac, procédé présentant les étapes opératoires suivantes :
    - amenée de fibres finies (10, 29, 31, 40-44, 53, 65, 75) à un dispositif de séparation (115), au moins une étape de dosage (2-6), au moyen de laquelle la quantité des fibres est dosée, étant alors prévue,
    - séparation des fibres (10, 29, 31, 40-44, 53, 65, 75) et
    - transport des fibres séparées (65, 75) en direction d'un dispositif de constitution de boudin (89).
  2. Procédé selon la revendication 1, caractérisé en ce que le transport des fibres séparées (65, 75) se fait, au moins partiellement, au moyen d'un courant d'air (55, 56, 68).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la séparation des fibres (10, 29, 31, 40-44, 53, 65, 75) se fait, au moins partiellement, au moyen d'un courant d'air (63, 68, 72, 72', 76, 122, 122').
  4. Procédé selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que la séparation des fibres (10, 29, 31, 40-44, 53, 65, 75) se fait, au moins partiellement, au moyen d'un passage à travers des ouvertures (132) d'un dispositif (47, 64, 78) pourvu d'une multiplicité d'ouvertures (132).
  5. Procédé selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que l'amenée des fibres (10, 29, 31, 40 à 44, 53) se fait, au moins partiellement, au moyen d'un courant d'air (17,19, 28, 29, 39, 55, 56, 56, 63).
  6. Procédé selon une ou plusieurs des revendications 1 à 5, caractérisé en ce qu'au moins deux étapes de séparation (2-6) sont prévues.
  7. Procédé selon une ou plusieurs des revendications 1 à 6, caractérisé en ce qu'une séparation préliminaire (2) de fibres finies (10, 29, 31,40-44, 53, 65, 75), présentes dans un composite (10), a lieu.
  8. Procédé selon une ou plusieurs des revendications 1 à 7, caractérisé en ce que, lors de l'étape de dosage (2-6), la quantité des fibres est dosée d'une manière prédéfinissable.
  9. Procédé selon une ou plusieurs des revendications 1 à 8, caractérisé en ce qu'au moins une étape de dosage (2-6) a lieu en même temps qu'une étape de séparation (2-6).
  10. Procédé selon une ou plusieurs des revendications 1 à 9, caractérisé en ce que différentes variétés de fibres (43, 44) sont utilisées.
  11. Procédé selon la revendication 10, caractérisé en ce que les différentes variétés de fibres (43, 44) sont mélangées.
  12. Procédé selon une ou plusieurs des revendications 1 à 11, caractérisé en ce qu'au moins un additif (45) est ajouté.
  13. Procédé selon une ou plusieurs des revendications 8 à 12, caractérisé en ce qu'une séparation complète (6) avec ou immédiatement à la suite d'une deuxième ou troisième étape de dosage (3-6) a lieu.
  14. Procédé selon une ou plusieurs des revendications 1 à 13, caractérisé en ce que la longueur des fibres est plus petite que la longueur du filtre (97) à fabriquer.
  15. Procédé selon une ou plusieurs des revendications 1 à 14, caractérisé en ce que le diamètre moyen des fibres se situe dans la plage de 10 à 40 µm, en particulier de 20 à 38 µm.
  16. Procédé pour la fabrication de filtres (95, 97) de l'industrie de transformation du tabac, comprenant un procédé pour la préparation de matériau pour filtre (10, 29, 31, 40-44, 53, 65, 75) selon une ou plusieurs des revendications 1 à 15, étant précisé qu'en outre, à la suite de cela, un boudin de fibres (95) est formé et le boudin est débité en tiges de filtre (97).
  17. Installation de préparation de matériau pour filtre (10, 29, 31, 40-44, 53, 65, 75) destiné à être employé dans le cadre de la fabrication de filtres (95, 97) de l'industrie de transformation du tabac, comprenant au moins un dispositif (115) pour séparer le matériau pour filtre (10, 29, 31, 40-44, 53) et au moins un dispositif de dosage (111-114), au moins un moyen (17, 19, 28, 29, 39, 55, 56, 63) étant prévu pour amener le matériau pour filtre (10, 29, 31, 40-44, 53) du au moins un dispositif de dosage (111-114) au au moins un dispositif (115) de séparation, caractérisée en ce que l'installation de préparation est conçue pour préparer le matériau pour filtre (10, 29, 31, 40-44, 53, 65, 75) qui renferme des fibres finies (10, 29, 31, 40-44, 53, 65, 75), le dispositif (115) de séparation permettant alors une séparation sensiblement complète des fibres finies.
  18. Installation de préparation selon la revendication 17, caractérisée en ce que le moyen (17, 19, 28, 29, 39, 55, 56, 63) d'amenée comprend un courant d'air.
  19. Dispositif selon la revendication 17 ou 18, caractérisé en ce que pour la séparation des fibres (10, 29, 31, 40-44, 53, 65, 75), un courant d'air peut circuler à travers et/ou dans le dispositif (115).
  20. Dispositif selon une ou plusieurs des revendications 17 à 19, caractérisé en ce que le dispositif (115) de séparation comprend une multiplicité d'ouvertures (132) à travers lesquelles les fibres (10, 29, 31, 40-44, 53, 65, 75) peuvent sortir du dispositif (115) séparées les unes des autres.
  21. Installation de séparation selon une ou plusieurs des revendications 17 à 20, caractérisée en ce que l'appareil de dosage (111-114) comprend une cheminée de descente par gravité (32), de laquelle un cylindre rotatif (37) extrait des fibres.
  22. Installation de préparation selon la revendication 21, caractérisée en ce qu'une paire de cylindres introducteurs (34) est prévue dans la région inférieure du dispositif de dosage (111-114).
  23. Installation de préparation selon une ou plusieurs des revendications 17 à 22, caractérisée en ce que le dispositif (115) de séparation permet une séparation des fibres par coopération d'au moins un élément tournant (52, 60, 78, 82, 83, 85), d'au moins un élément (47, 64, 78) pourvu d'ouvertures de passage et d'un courant d'air (63, 74, 76, 80).
  24. Installation de préparation selon une ou plusieurs des revendications 17 à 23, caractérisée en ce que le dispositif de dosage (111-114) possède en plus une fonction de séparation.
  25. Installation de préparation selon une ou plusieurs des revendications 17 à 24, caractérisée en ce qu'un dispositif de mélange (111) y est prévu.
  26. Installation de préparation selon la revendication 25, caractérisée en ce que le dispositif de mélange (111) permet en plus une séparation et/ou un dosage des fibres (10, 29, 31, 40-44, 53).
  27. Installation de préparation selon une ou plusieurs des revendications 17 à 26, caractérisée en ce qu'elle est conçue de façon à préparer des fibres finies (10, 29, 31, 40-44, 53, 65, 75) ayant une longueur qui est plus petite que celle d'un filtre (37) à fabriquer.
  28. Installation de préparation selon la revendication 27, caractérisée en ce qu'elle est conçue de façon à préparer des fibres finies (10, 29, 31, 40-44, 53, 65, 75) ayant un diamètre moyen de fibres se situant dans la plage de 10 à 40 µm, en particulier de 20 à 38 µm.
  29. Installation pour la fabrication de filtres comportant une installation de préparation selon une ou plusieurs des revendications 17 à 28.
EP03007672A 2003-04-03 2003-04-03 Procédé et dispositif pour la préparation de fibres séparées destinées à la production de filtres Expired - Lifetime EP1464238B1 (fr)

Priority Applications (18)

Application Number Priority Date Filing Date Title
ES03007672T ES2264744T3 (es) 2003-04-03 2003-04-03 Procedimiento para la preparacion de fibras discontinuas y dispositivo de preparacion de fibras discontinuas para el uso en la fabricacion de filtros.
EP03007672A EP1464238B1 (fr) 2003-04-03 2003-04-03 Procédé et dispositif pour la préparation de fibres séparées destinées à la production de filtres
DE50304210T DE50304210D1 (de) 2003-04-03 2003-04-03 Verfahren zur Aufbereitung endlicher Fasern und Aufbereitungseinrichtung für endliche Fasern zur Verwedung bei der Herstellung von Filtern
AT03007672T ATE332651T1 (de) 2003-04-03 2003-04-03 Verfahren zur aufbereitung endlicher fasern und aufbereitungseinrichtung für endliche fasern zur verwedung bei der herstellung von filtern
DE502004001630T DE502004001630D1 (de) 2003-04-03 2004-03-01 Verfahren zur Herstellung eines Vlieses für die Herstellung von Filtern der tabakverarbeitenden Industrie sowie Filterstrangherstelleinrichtung
ES04003359T ES2270198T3 (es) 2003-04-03 2004-03-01 Procedimiento para la fabricacion de una tela no tejida para la fabricacion de filtros de la industria tabacalera, asi como dispositivo de fabricacion de varillas de filtro.
EP06011475A EP1698241A1 (fr) 2003-04-03 2004-03-01 Procédé pour la produciton d'un tissu pour la production de filtres de l'industrie du tabac et dispositif pour la production d'une tige de filtre
PL04003359T PL1464241T3 (pl) 2003-04-03 2004-03-01 Sposób wytwarzania włókniny do wytwarzania filtrów w przemyśle tytoniowym oraz urządzenie do wytwarzania pasma filtru
AT04003359T ATE341233T1 (de) 2003-04-03 2004-03-01 Verfahren zur herstellung eines vlieses für die herstellung von filtern der tabakverarbeitenden industrie sowie filterstrangherstelleinrichtung
EP04003359A EP1464241B1 (fr) 2003-04-03 2004-03-01 Procédé pour la produciton d'un tissu pour la production de filtres de l'industrie du tabac et dispositif pour la production d'une tige de filtre
JP2004104124A JP2004337160A (ja) 2003-04-03 2004-03-31 たばこ加工産業のフィルタを製造するためのフリースを製造する方法とフィルタ連続体製造装置端繊維の調製装置
JP2004102611A JP4512398B2 (ja) 2003-04-03 2004-03-31 有端の繊維を調製する方法と、フィルタ製造時に使用するための有端繊維の調製装置
PL366816A PL210055B1 (pl) 2003-04-03 2004-04-01 Sposób wstępnej obróbki materiału filtrowego do zastosowania przy wytwarzaniu filtrów w przemyśle tytoniowym, sposób wytwarzania filtrów zawierający sposób wstępnej obróbki materiału filtrowego oraz urządzenie do wstepnej obróbki materiału filtrowego i urządzenie do wytwarzania filtrów z urządzeniem do wstępnej obróbki materiału filtrowego a także filtr
US10/815,933 US20040235631A1 (en) 2003-04-03 2004-04-02 Method and a continuous rod machine arrangement for producing nonwoven filters
US10/815,959 US20050011529A1 (en) 2003-04-03 2004-04-02 Method and arrangement for processing finite fibers for use in the manufacture of filters
CNA2004100550614A CN1568844A (zh) 2003-04-03 2004-04-05 用于制造烟草加工业中滤嘴的毛网制造方法及滤嘴制条机
CN200410055060A CN100584227C (zh) 2003-04-03 2004-04-05 用于制造滤嘴的有限长纤维的加工方法和有限长纤维的加工装置
US11/214,934 US7318797B2 (en) 2003-04-03 2005-08-31 Continuous rod machine arrangement for producing nonwoven filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03007672A EP1464238B1 (fr) 2003-04-03 2003-04-03 Procédé et dispositif pour la préparation de fibres séparées destinées à la production de filtres

Publications (2)

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EP1464238A1 EP1464238A1 (fr) 2004-10-06
EP1464238B1 true EP1464238B1 (fr) 2006-07-12

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EP03007672A Expired - Lifetime EP1464238B1 (fr) 2003-04-03 2003-04-03 Procédé et dispositif pour la préparation de fibres séparées destinées à la production de filtres

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US (1) US20050011529A1 (fr)
EP (1) EP1464238B1 (fr)
JP (1) JP4512398B2 (fr)
CN (1) CN100584227C (fr)
AT (1) ATE332651T1 (fr)
DE (1) DE50304210D1 (fr)
ES (1) ES2264744T3 (fr)
PL (1) PL210055B1 (fr)

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PL1504681T3 (pl) † 2003-08-08 2006-09-29 Hauni Maschinenbau Ag Sposób i urządzenie do wytwarzania pasma filtru
DE102005017478A1 (de) * 2005-04-15 2006-10-19 Reemtsma Cigarettenfabriken Gmbh Tabakrauchfilter
DE102006018102A1 (de) * 2006-04-18 2007-10-25 Hauni Maschinenbau Ag Faserfilterherstellung
DE102006025738B3 (de) * 2006-05-31 2007-11-08 Hauni Maschinenbau Ag Einbringen von Zusatzstoffen in einen Filterstrang
US10064429B2 (en) 2011-09-23 2018-09-04 R.J. Reynolds Tobacco Company Mixed fiber product for use in the manufacture of cigarette filter elements and related methods, systems, and apparatuses
US9179709B2 (en) 2012-07-25 2015-11-10 R. J. Reynolds Tobacco Company Mixed fiber sliver for use in the manufacture of cigarette filter elements
US9119419B2 (en) 2012-10-10 2015-09-01 R.J. Reynolds Tobacco Company Filter material for a filter element of a smoking article, and associated system and method
US10524500B2 (en) 2016-06-10 2020-01-07 R.J. Reynolds Tobacco Company Staple fiber blend for use in the manufacture of cigarette filter elements
EP3903606A3 (fr) * 2020-04-30 2022-02-23 Swisher International, Inc. Machine pour emballer un matériau à fumer dans une enveloppe, dispositif d'alimentation pour la machine et produit à fumer à partir de ceux-ci
CN112167705B (zh) * 2020-10-23 2022-05-27 湖北中烟工业有限责任公司 一种hnb叶丝雾化剂加工装置
CN114142922B (zh) * 2021-11-26 2023-04-07 山东华汉电子有限公司 一种基于通信承载网的光纤通信测试装置

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EP1464238A1 (fr) 2004-10-06
PL366816A1 (en) 2004-10-04
CN100584227C (zh) 2010-01-27
PL210055B1 (pl) 2011-11-30
DE50304210D1 (de) 2006-08-24
JP4512398B2 (ja) 2010-07-28
JP2004337159A (ja) 2004-12-02
ES2264744T3 (es) 2007-01-16
ATE332651T1 (de) 2006-08-15
US20050011529A1 (en) 2005-01-20
CN1568842A (zh) 2005-01-26

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