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
  • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
  • A24D3/0212—Applying additives to filter materials
  • A24D3/022—Applying additives to filter materials with liquid additives, e.g. application of plasticisers
• • 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
  • A24D3/027—Multiple line manufacturing devices

Definitions

• a machine comprising such Umlenkvorrichtunq and methods for conveying and deflecting at least one Filterertowstranqes
• the invention relates to a deflection device for conveying and deflecting at least one filter tow strand.
• This device can be coupled with a format part, in particular with an intake system of a machine for the production of filter rods.
• the invention relates to a machine comprising such a deflection device and a method for conveying and deflecting at least one filter tow.
• a deflection device of the aforementioned type is known for example from WO 2005/058 079 Al.
• This deflection device is used in double-strand machines, which comprise two format sections for forming continuous filter rods and a filter material supply line for each format section.
• the supply lines receive the filter material from a conveyor line which extends between an inlet region of the supply lines and a storage area of two filter material bales.
• a blower which is provided in the inlet area to pull the two Lunten transversely in two strips of filter material.
• the two strips are blown along respective feeds by a pressing means, then by an expander in which air is blown into the strips to increase their volume, and finally conveyed through a conditioner where chemical substances are added to the strip to give the filter material flavor and formability.
• Each feeder is connected to the format section by a stabilizer unit which serves to convert and stabilize the strips into strands of filter material.
• the stabilizer unit receives a strip from the feeder and feeds it, in the form of a uniform strand, onto a strip of previously rubberized paper in the format course.
• the stabilizing unit usually has one for each feeder Funnel in which the strip is introduced and compacted, whereby the filter material strand is formed.
• air may be blown into the hopper, as described, for example, in US 4,200,616 A1.
• the paper strip is wound in the format section transversally around the strand, whereby a continuous filter rod is formed.
• a control unit controls the density of the filter rods.
• a cutting head cuts the bars into individual filter sections.
• the reduction of the distance between the two strands in the stabilizing unit of the machine according to WO 2005/058 079 A1 is effected by two deflection rollers having a V-shaped cross section.
• the two deflection rollers interact with the curvature arcs of the two inlet funnels and receive the filter tow strand from two transport rollers.
• the filter material strand is therefore fed mechanically into the two inlet funnel.
• the stabilization unit can also be regarded as a deflection unit.
• Filter rods made on known filter rod machines with a stabilizer unit described above have insufficient homogeneity.
• the invention has for its object to further develop the aforementioned deflection such that filter rods can be produced with improved homogeneity. Moreover, the device should be provided with easy to implement at a low cost. Another object of the invention is to provide a machine with such a deflection device and a method for conveying and deflecting at least one filter tow.
• the above object with regard to the deflection device is solved by the subject-matter of claim 1, with regard to the machine by the subject-matter of claim 29 and with respect to the method by the subject-matter of claim 32.
• the object is achieved by a device for producing cigarette filters according to independent claim 33.
• An essential aspect of the invention is the provision of a transport device for pneumatically conveying the at least one filter strand and a deflection device, which cooperates with the transport device for the pneumatically driven deflection of the filter fabric strand.
• the combination of pneumatic transport with strand deflection results in increased fluidization of the material, resulting in a very homogeneous filter material.
• the tensile resistance and the tensile resistance scattering of a filter rod which is obtainable by a filter rod machine with the deflection device according to the invention are significantly improved.
• the deflection device according to the invention can be realized cost-effectively, so that the total cost of the filter rod machine can be reduced.
• the deflecting device according to the invention direction can be used in a simple manner in known filter rod machines, wherein only the existing deflection of such a machine is replaced by the deflection device according to the invention.
• the known deflection device according to WO 2005/058 079 Al is designed to mechanically feed the filter tow strand into the format part of the machine.
• the known deflection device couples to a mechanical conveyor with a deflection.
• This filter rod machine is therefore unable to produce a filter material which is comparable in terms of homogeneity, draw resistance and draw resistance scattering to a filter material obtainable by a filter rod machine comprising a deflection device according to the invention.
• the deflection device also operates on a mechanical basis using a deflection roller.
• the strand coming from the pulley is introduced into a hopper by a forward flow of air from a nozzle located immediately in front of the hopper. This means that the nozzle is used exclusively to insert the strand into the hopper, whereby no distraction or deflection of the strand takes place.
• the deflection device is adapted such that the deflection of the at least one filter tow strand has at least one horizontal component. It has been found that due to the horizontal component of the deflection, the draw resistance and draw resistance scattering can be further improved. In contrast, the deflection device according to US 4,522,616 provides only a vertical deflection of the strand.
• the transport device can have at least one pneumatically operated transport nozzle, which makes a particularly simple technical conversion possible. tion of the transport device is achieved because conventional transport nozzles can be used.
• the transport device has two transport nozzles, which are arranged in the region of the inlet side and the outlet side of the device.
• the two nozzles can be operated at different pressures to influence the properties of the filter tow.
• the deflection device comprises at least one curvature arc which determines the conveying path of the filter tow strand at least in sections.
• the use of a curvature arc in connection with the deflection device has the advantage that a continuous deflection of the filter tow strand is achieved.
• any component having a continuously curved configuration that causes a deflection of an airflow such as a baffle, is suitable for implementing the baffle.
• the curvature arc can be connected to the transport nozzle provided on the outlet side and / or with the transport nozzle provided on the inlet side, in particular detachably connected. In this way, the curvature arc and the transport nozzle act together directly, which ensures that the deflection is driven pneumatically or pneumatically. Due to the detachable connection between the curvature arc and the transport nozzle, in each case one of the two transport nozzles can be equipped with a curvature arc or both transport nozzles each with a curvature arc.
• curvature arc or the plurality of curvature arcs are arranged rotatably or pivotally.
• the lower limit of the curvature angle of the curvature arc may be at least 10 °, with preferred ranges between 10 ° -80 °, 20 ° -60 ° and 30 ° -50 °.
• a uniform transfer of the filter tow strand from a curve of curvature to the associated further curve of curvature can be achieved by the fact that the ends of the curved bends remote from the respective transport nozzle are aligned.
• curvature arches are connected by a pipe section, in particular a rectilinear pipe section.
• a pipe section in particular a rectilinear pipe section.
• the tube section is an effective means of increasing the length of the diverter, resulting in the positive effect of dampening pulsations, which become critical particularly at high processing speeds.
• Increased pulsations are related to the higher pressures applied to the inlet nozzle, which are necessary to ensure proper feeding of the strand into the finger. Due to the short guide channels in conventional deflection systems such pulsations are transmitted almost undamped on the format part of the machine. This leads to an increased scattering of the draw resistance, in particular at high processing speeds.
• the increased length of the system according to this embodiment of the invention enhances the blooming effect.
• the pipe section may be perforated at least in sections, whereby the escape of compressed air from the pipe section is made possible.
• the pipe section is provided with a feed device for feeding in additives, such as activated carbon, plasticizer and / or for feeding water. Due to the increased length of the system, the feed of additives and / or water in the pipe section leads to a homogeneous distribution of the additives and / or the water in the filter tow line. Moreover, the supply of water in the pipe section of the deflector ensures a safe separation of the water supply from the triacetin circulation, which must be anhydrous to avoid hydrolysis of the triacetin.
• a clearance is formed between the curvature arcs, thereby allowing the release of chemical substances from the filter tow strand that have been added to the strand before it is introduced into the diverter.
• the deflection device is adapted for a horizontal offset of the at least one filter tow strand of at least 5 cm, in particular from 5 to 50 cm, in particular from 10 to 40 cm, in particular from 15 to 30 cm.
• a suitable length of the device in order to achieve a good turbulence of the filter rod material is achieved if the total longitudinal length of the device is at least 200 mm, in particular 200-1000 mm, in particular 500-900 mm, in particular 600-800 mm.
• FIG. 1 shows a schematic side view of a preferred embodiment of a double-strand filter rod machine according to the invention
• Fig. 2 is a plan view of the machine of Fig. 1; 3 shows a side view in partial section of the stabilizing unit or deflecting device of the machine according to FIG. 1, wherein parts have been omitted for reasons of clarity;
• FIG. 4 shows a section along the line IV-IV of the stabilization unit or deflecting device according to FIG. 3;
• FIG. 5 shows a cross section through a further embodiment of the deflection device according to the invention comprising a pipe section
• FIG. 6 shows a cross section through a further embodiment of the deflection device according to the invention, wherein the pipe section is perforated.
• Fig. 7 shows another embodiment of the deflection device according to the invention, which is adapted for a double-strand machine.
• Reference numeral 1 in Fig. 1 denotes a total of a double-strand machine for the production of cigarette filters.
• the machine 1 comprises a format part with two format sections 2a, 2b in each case for forming continuous filter rods 3a, 3b and, for each format section 2a, 2b, in each case one filter material feed 4a, 4b.
• the feeds 4a, 4b receive filter material from the conveyor line 5, which forms part of the machine 1 and extends between an infeed station 6 of the feeders 4a, 4b and a storage area 7 comprising two bales 8a, 8b of filter material.
• respective Lunten 9a, 9b are unwound from the bales 8a, 8b and conveyed along the conveyor line 5 by a guide roller assembly 10a, which is arranged at the inlet station 6.
• the conveyor line 5 comprises a double guide device 11, which is arranged above the bales 8a, 8b for guiding the lunts 9a, 9b.
• the funding Track 5 further comprises a suction device 12, which is arranged directly in the conveying direction in front of the guide assembly 10a at the infeed station 6 to pull the Lunten 9a, 9b in the transverse direction into respective partially flat strips 13a, 13b, that of the guide device 10a be supplied.
• a pressing device 15 which comprises a guide roller or brake roller arrangement 10a and two drive roller arrangements 10b, 10c.
• the two strips 13a, 13b are then conveyed along the respective feeds 4a, 4b in the direction 14 through an expansion device 16 which injects air into the strips 13a, 13b in order to increase their volume. Subsequently, the strips 13a, 13b are transported through a treatment device 17, where chemical substances, in particular triacetin, are added to the strips 13a, 13b, so that the filter material is given moldability and / or aroma. Finally, the two strips 13a, 13b are conveyed along the respective feeds 4a, 4b in the direction 14 by a drive roller assembly 10d, which is constructed similarly to the arrangements 10b, 10c and defines a lead-out region of the feeds 4a, 4b or feed paths 4a, 4b.
• a drive roller assembly 10d which is constructed similarly to the arrangements 10b, 10c and defines a lead-out region of the feeds 4a, 4b or feed paths 4a, 4b.
• the feeds 4a, 4b are connected to the format sections 2a, 2b of the format part by a stabilization unit or deflecting device 18, which is immediately downstream of the roller arrangement 10d.
• the stabilizing unit 18 receives the strips 13a, 13b from the feeds 4a, 4b, uniformly collects the strips 13a, 13b to form two strands of filter material and conveys the filter material strands to the format sections 2a, 2b.
• each filter material strand is conveyed onto a paper strip 19a, 19b which has been previously gummed in a gumming station 20 and then wound transversely around the filter material strand to form a continuous filter rod 3a, 3b.
• a cutting head 22 transversely intersects the bars 3a, 3b into respective subsequent filter sections (not shown).
• the stabilizer unit 18 includes a housing 23 which is secured to the frame of the machine 1 and internally supports two laterally juxtaposed stabilizer links 24a, 24b which converge to reduce the distance between the two filter material strands.
• Each stabilizing section 24 comprises an inlet funnel 25, into which the strip 13 is conveyed out of the feed 4, and a downstream outlet funnel 26, through which the filter tow line is conveyed to the format section 2.
• the inlet funnel 25 and the outlet funnel 26 each have a nozzle, by means of which a drive gas flow, in particular air flow, is generated to convey the strand.
• the funnels 25, 26 therefore each function as a transport nozzle.
• Each hopper 25 has a straight central axis of symmetry 27, which runs parallel to the conveying direction, or lies in the conveying plane of the strip 13 in the region of the feed 4.
• Each outlet funnel 26 likewise has a rectilinear central axis of symmetry 28, which runs inclined with respect to the conveying direction of the filter material strand out of the inlet funnel 25 and with respect to the conveying direction of the filter material line along the format line 2.
• a tubular deflection part is arranged, in particular a curvature arc 29, which has a curved section for deflecting the conveying direction of the filter material strand from the inlet funnel 25.
• Each arc of curvature 29 is preferably connected directly to the outlet of the inlet funnel 25.
• each hopper 25, 26 comprises a tubular body 30 having a narrowly tapered entrance area (ie, with a gradually decreasing flow channel diameter) and a cylindrical intermediate section (ie with a constant flow channel diameter).
• Each hopper 25, 26 further includes a slightly flared further tubular body 31 (ie, having a gradually increasing flow channel diameter) downstream of the tubular body 30.
• the tubular body 30 is screwed into the further tubular body 31, whereby between a outer surface of the tubular body 30 and an inner surface of the further tubular body 31, a tubular air flow channel 32 is delimited, in which a plurality of Einblasöffnun- conditions 33 open, which the inner surface of the tubular body 30 in the cylindrical intermediate section.
• Supply channels 34 are formed in the further tubular body 31, through which, in operation, compressed air is introduced into the tubular channel 32 and from there through the injection openings 33 into the flow channel of the tubular body 30.
• the injection openings 33 in the inlet funnel 25 are oriented with respect to the central axis of symmetry 27 in such a way that the air flow has an axial component, i. a component parallel to the central axis of symmetry 27, imprinted.
• the injection ports 33 in the feed hopper 25 are oriented with respect to the central axis of symmetry 27 such that both an axial component and a radial component (i.e., perpendicular to the central axis of symmetry 27) are impressed on the airflow.
• the axial air flow component prevails, which serves to press the filter material through the inlet funnel 25, whereas the radial air flow component serves to swirl the air flow.
• the injection openings 33 in the discharge funnel 26 are oriented with respect to the central axis of symmetry 28 such that primarily an axial component (ie parallel to the central axis of symmetry 28) of the air flow is impressed, whereby the feed acting on the filter material is maximized.
• the air flow area of each tubular channel 32 can be adjusted by screwing the tubular body 13 in and out of the other tubular body 31, thereby adjusting the air velocity and flow through the blowing holes 33.
• the filter rod material is conveyed between each inlet hopper 25 and outlet hopper 26 through the clearance 35, the filter rod material being exposed, i.e., free, to flow. moved without guide part.
• each hopper 25 may be connected to the corresponding hopper 26 through a perforated tubular expansion part.
• the clearance 35 through which the filter rod material is moved freely, allows expansion of the injected through the injection ports 33 of each inlet funnel 25 compressed air, whereby unwanted backpressure phenomena are avoided. Furthermore, this makes it possible for the filter rod material to release excess chemical substances which have been added in the treatment device 17.
• the housing 23 is arranged inclined downwards and has at the lowest point a collecting channel, which leads to a catch basin. In order to prevent the chemical substances released from the filter rod material from escaping from the housing 23 and contaminating the rest of the machine 1, the housing 23 is substantially sealed and has only outlet openings arranged in a central region of the housing 23 and against direct spraying are shielded.
• each discharge hopper 26 is provided with a slightly conical perforated tubular body 37 having a plurality of openings 38 and the discharge funnel 26 immediately is subordinate.
• the through-openings 38 in each perforated tubular body 37 are preferably arranged only on the upper side of the perforated tubular body 37, in order to avoid a downwardly directed air flow, ie an air flow directed onto the format section 2.
• each stabilization section 24 of the stabilization unit 18 comprises one, two or even more intermediate funnels which are arranged between the inlet funnel 25 and the outlet funnel 26 and are constructed identically to the funnels 25, 26.
• the machine 1 described above is designed as a single-strand machine and therefore comprises a format part with a format section 2 for forming a continuous filter rod 3 and a filter material supply 4.
• the stabilization unit or deflection device 18 comprises a stabilization section 24
• the machine 1 described above may be formed as a triple or quadruple strand machine and thus a molded part with three or four format plugs 2 for forming three or four continuous filter rods 3 and three or four filter material feeds 4.
• the stabilization unit or deflecting device 18 has three or four stabilizing sections 24, which are each equipped with the inlet and outlet funnels 25, 26 described above.
• the filter material producible with the above-described stabilizing unit or deflecting device 18 exhibits excellent homogeneity and, at least with regard to homogeneity, is superior to filter materials which are produced with stabilizing units currently available on the market.
• the drive roller assemblies 10b, 10c, 10d differ in size and arrangement along the leads 4a, 4b, but are functionally identical. The following description therefore refers only to one of the drive roller arrangements 10b, 10c, 10d, which is designated by the reference numeral 10 for the sake of simplicity.
• Each drive roller assembly 10 includes, for each feed 4, a drive roller rotated by a motor independent of the motors of the other rollers and a free rotating roller which abuts and engages the drive roller.
• the two motors of the two drive rollers of each drive roller assembly 10 may be located on the same side of the feeders 4 in the machine frame. Alternatively, for each drive roller assembly 10, the motor of one drive roller in the frame of the machine 1 and the motor of the other drive roller next to the drive roller may be arranged.
• the deflection device which is also referred to as stabilization unit 18, described in more detail.
• the deflection device essentially has a deflection device 50 and a transport device 40, which interact with one another in such a way that the deflection of the filter tow rope 13, which is moved by the deflection device, takes place pneumatically.
• curvature arc 29 in the conveying direction above and / or below the respective nozzle, wherein the alternative of arranging the curvature in the conveying direction below the nozzle and thus to pneumatically press the strand through the curvature, leads to better results in terms of Draw resistance and the tensile resistance of the filter material.
• the deflection device 50 is adapted to effect a deflection of the filter tow in a direction which comprises at least one horizontal component.
• the deflection is carried out with both a horizontal and a vertical component, since the entire deflection device is arranged inclined with respect to a horizontal plane.
• Diversion generally means that the conveying direction is changed at least once.
• the curvature curves 29 can be replaced by other means, for example by components with an open structure, in particular by a curved baffle plate, which is assigned to the pneumatic transport device 40.
• the curved baffle plate can be used to achieve the desired offset of the filter tow string 13 while continuously redirecting the filter tow string.
• components for the technical implementation of the deflection device 50 can be used, which enable a continuous and pneumatically driven deflection of the filter tow. This means that the deflection device 50 should have at least one continuously curved wall which limits the guide path of the filter tow strand at least in sections and at the same time changes the conveying direction.
• the deflection device 50 comprises a deflection part, which is arranged between an inlet funnel or an inlet-transport nozzle and a discharge funnel or a discharge transport nozzle.
• the deflecting part can be tubular and comprises a curved section for deflecting the conveying direction of the filter material strand or the filament coming from the inlet funnel or the inlet transport nozzle.
• the deflection device is to be used in a double-strand machine, it is advantageous to change the conveying direction so that the two strands are fed to one another, i. converge (Fig. 4).
• the strands can then be fed to the infeed system of a format part of the machine.
• it may be useful to redirect the strand in a different direction for example, when two separate format parts are used, which are arranged spaced from each other.
• the device is designed to be even more flexible if the bends 29 are detachably connected to the respective transport nozzle 25, 26, since the device can then be adapted to different process conditions.
• the curvature arcs 29 can be arranged to be pivotable, whereby the direction under which the strands leave the respective curvature arcs 29 can be changed.
• the curvature elbows 29 on the inlet side and the curvature arcs 29 on the outlet side of the device can be easily aligned by pivoting the respective curvature arcs 29 accordingly.
• each curvature bend 29a, 29b on the inlet side of the device is oriented such that the central axis of symmetry of the free end of the arc of curvature 29a, 29b, the central axis of symmetry of the remote transport nozzle 26a, 26b on the outlet side of the device in the inlet plane intersects.
• This alignment of the arc of curvature 29a, 29b with respect to the transport nozzles 26a, 26b on the discharge side of the device provides for uniform transfer of the strand 13 from the respective arc of curvature 29a, 29b to the transport nozzles 26a, 26b.
• the exemplary embodiment according to FIGS. 3, 4 relates to a deflection device which has a free space 35 between the curvature curves 29a, 29b and the outlet transport nozzles 26a, 26b.
• a pipe section 51 in particular a straight pipe section 51, which connects a curvature arc 29 on the inlet side of the device and a curvature arc 29 'on the outlet side of the device.
• the two arcuate curves 29, 29 ' are curved in opposite directions, with the central axis of symmetry of the arcuate curves 29, 29', which is coaxial with the central axis of symmetry of the respective transporting nozzle 25, 26, running parallel.
• the ends of the respective arcuate curves 29, 29 ' which are arranged away from the respectively associated transporting nozzle 25, 26, are aligned, so that the tube section 51 can be fitted between the two arcuate curves 29, 29'.
• the pipe section 51 is an extremely effective means for increasing the length of the pipe system. This enhances the turbulence of the filter material that can be achieved with the system and the blooming effect.
• the pipe section 51 does not necessarily have to extend straight. It is also possible to use a pipe section which, at least in sections, has curvature curves or is generally curved.
• the pipe section 51 may be perforated to allow compressed air to be discharged through the transport nozzle 25 on the inlet side of the apparatus.
• a supply device is associated with the pipe section, which allows the feeding of additives, such as activated carbon, plasticizer or other substances into the filter tow line.
• the feeder can be used to feed water into the strand, thereby affecting the cure time.
• a particular advantage of the pipe section 51 is that the length of the system is increased. This makes it possible that the injected additives and / or the injected water is distributed homogeneously over the length of the pipe section in the filter tow line. The quality of the filter rods, which are produced with a machine comprising such a deflection device, can thus be significantly improved.
• the horizontal offset of the deflection device 50 is at least 5 cm.
• a preferred range is 5 - 50 cm, in particular 10 - 40 cm, in particular 15 - 30 cm.
• the total longitudinal length of the device should be at least 200 mm. This means that the axial distance between the inlet side and the outlet side of the device is at least 200 mm.
• Preferred ranges are from 200 to 1000 mm, in particular 500 to 900 mm, in particular 600 to 800 mm.
• the angle of curvature of each arc of curvature is at least 10 °.
• the curvature angle is the acute angle between the two central axes of symmetry of a curvature arc.
• the angle of curvature in Fig. 7 is indicated by a. Preferred ranges are between 10 ° - 80 °, in particular 20 ° - 60 °, in particular 30 ° - 50 °.
• the deflection device described above can be used both for a single-stranded as well as for a double-strand machine, wherein the embodiments provided for the single-strand machine in Figures 5 and 6 and provided for the double-strand machine embodiments in Figures 1 - 4 and 7 are shown.
• the pipe systems according to FIGS. 5-7 can also be arranged in a housing 23, as provided for the deflection device 50 according to FIGS. 1-4.
• the device according to the invention improves the draw resistance as well as the draw resistance spread due to the combined deflection and pneumatic conveying, which leads to an improvement in the turbulence in the system and thus to an increased homogeneity of the filter material.
• the deflection devices described above allow damping of the pulsations that occur at higher processing speeds.
• the damping of the pulsations is due to the increased length of the conveying path, in particular in connection with the use of a pipe section between two associated curves on the inlet and outlet side of the device. In this way, the flowering effect can be improved.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Cigarettes, Filters, And Manufacturing Of Filters (AREA)

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Cited By (7)

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• 2006
  • 2006-01-12 DE DE200610001643 patent/DE102006001643A1/de not_active Ceased
  • 2006-11-15 DE DE502006008784T patent/DE502006008784D1/de active Active
  • 2006-11-15 WO PCT/EP2006/011042 patent/WO2007087848A2/de not_active Ceased
  • 2006-11-15 CN CN200680053609.9A patent/CN101394760B/zh not_active Expired - Fee Related
  • 2006-11-15 JP JP2008549773A patent/JP2009523015A/ja active Pending
  • 2006-11-15 EP EP06818621A patent/EP1978833B1/de active Active

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