US3762281A - Process of making cigarette filters, and apparatus therefor - Google Patents

Process of making cigarette filters, and apparatus therefor Download PDF

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Publication number
US3762281A
US3762281A US00185740A US3762281DA US3762281A US 3762281 A US3762281 A US 3762281A US 00185740 A US00185740 A US 00185740A US 3762281D A US3762281D A US 3762281DA US 3762281 A US3762281 A US 3762281A
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Prior art keywords
filter
cover strip
wads
free
filling
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Expired - Lifetime
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US00185740A
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English (en)
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C Burrus
S Boegli
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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
    • 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
    • A24D3/0225—Applying additives to filter materials with solid additives, e.g. incorporation of a granular product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1008—Longitudinal bending
    • Y10T156/1013—Longitudinal bending and edge-joining of one piece blank to form tube

Definitions

  • ABSTRACT In a process of making multiple filters for cigarettes, a succession of uniformly spaced filter wads are secured to a continuously fed cover strip; this assembly is moved past (and in contact with) a filler head having a filling aperture while a suction device disposed ahead of the filling aperture and above the wads produces a partial vacuum within a space (between two adjacent wads) whereby filter material moves from the filling head into the evacuated space. The edges of the cover strip then are brought together and overlapped and finally are fixedly secured to each other.
  • PATENTED SHEET 5 [IF 5 PROCESS MAKING CIGARETTE FILTERS, AND APPARATUS THEREFOR
  • the present invention relates to a method of manufacturing a cigarette filter, in which sections of fibrous and of free-running filter materials are arranged in succession, and to a device for putting that method into practice.
  • the individual filter chambers are charged with the free-running filtration material with the aid of a wheel containing recesses round its periphery or by means of a chaincarrying cups.
  • This mechanism is very complicated and again does not enable the degree of filling to be matched to the nature of the filtering medium used.
  • the individual spaced filter sections are wrapped round, up to an upward facing opening, with an initial cover strip, the width of which is less than the circumference of the filter sec- 'tions to be covered, this strip containing perforations for the passage of air.
  • the resultant assembly is fed to a filler head, where, to accelerate filling, air is drawn from below, through the initial cover strip, from the filter spaces to be filled with the free-running material.
  • the whole requires further wrapping in a second, wider, cover strip.
  • This method too, is very complicated and it is not possible for the units being filled to be supported on a conveyor belt below the filler head, which results in further disadvantages.
  • the use of two cover strips increases production costs and leads to the formation of false air passages in the finished filter.
  • the purpose'of the invention is to provide a method and a device free from the above drawbacks, with which it is a simple matter to fill the filter spaces faultlessly, the filling being regulated according to the nature of the free-running filtering medium used.
  • the method here proposed is characterised by the fact that a succession of filter elements or wads, uniwads and the free-running filter material, after which the overlapping edges of the strip are firmly cemented together.
  • thermoplastics it is preferable to use a cover strip coated with a thermoplastics on the side cominginto contact with the filter wads and to join these to the cover strip by the use of a heater to soften the thermoplastic coating at least at particular points.
  • the invention also has as its object a device for putting the proposed method into practice, characterised by the incorporation of the following components: a feed mechanism for continuously feeding a succession of uniformly spaced and axially aligned filter wads on to a continuously fed cover strip; means of fixing the individual filter wads to cover strip; means of guidance and conveyance, by which the cover strip bearing the filter wads is guided and continuously fed forward; a forming member in the vicinity of the said means of guidance and conveyance, by which the cover strip, as it moves forward, is wrapped round the filter wads attached to it so as to form at least approxmately a letter U; a suction arrangement fitted above the means of guidance and conveyance, such that it makes contact, between the arms of the U-shaped cover strip, with the upper sides of the filter wads travelling forward with the cover strip and the facing inner surfaces of the U- shaped cover strip; a filling head for charging freerunning filter material ,into the spaces between the wads, this filling head being situated above the means of guidance
  • the suction arrangement and the filling head are connected by a common elongated sliding member extending in the direction of travel of the filter wads and providing a sliding face which forms a sealing contact on the upper sides of the wads travelling forward with the cover strip, for the width of the sliding member to be at least approximately equal to the diameter of the wads to be wrapped in the cover strip, and for the side faces of the sliding member to be formly spaced and in axial alignment, are secured to a continuously fed filter-tip cover strip; then the filter wads and the cover strip for forming spaces with a feed aperture between the wads are moved past, and in contact with, a filler head having at least one filling aperture, while a suction device situated (in relationto the direction of travel of the filter wads)-before the filling aperture and above the wads produces, through the feed aperture of the spaces and through'the filter wads moving towards the filling aperture, a partial vacuum within the spaces to be filled, so that a given quantity of free-running
  • the lower part of the storage container prefferably be cylindrical, for its means of closure to consist of a scoop-shaped closing member bearing against the inner face of this cylindrical part and rotating about the longitudinal centre line thereof, and for the closing edge of the closing member to run helically about the longitudinal centre line of the cylindrical part of the storage container, so that as the closing member is turned in the direction for opening, it is initially that end of the discharge slot that lies towards the suction aperture which is freed, this being followed by those parts of the discharge slot which are farther from the suction aperture as the closing member continues to turn.
  • FIG. 1 is a diagrammatic side elevation of a device for producing a cigarette filter unit
  • FIG. 2 is a section through the filler head, along the line II-II in FIG. 3;
  • FIG. 3 is a section along the line IIIIII in FIG. 2;
  • FIG. 4 is an enlarged section along the line IV-IV in FIG. 2;
  • FIG. 5 is a section along the line VV in FIG. 1, to show the fixing mechanism
  • FIG. 6 is a section along the line VIVI in FIG. 1, to show the top welding arrangements
  • FIG. 7 is a section along the line VIIVII in FIG. 1, to show the cooler
  • FIG. 8 is a section along the line VIIIVIII in FIG. 1, to show the bottom welding arrangements.
  • FIG. 9 is a longitudinal section of the adjusting mechanism serving to bring the operating cycle of the filter element feed into line with that of the cutting mechanism.
  • the arrangement for continuously feeding a succession of uniformly spaced and axially aligned filter wads, 1 and 2, on to a continuously fed filter-tip cover strip, 3, include a machine, 4, known in the cigarette industry as a Molins D.A.P.T.C. Machine, which is described in detail in U.S. Pat. No. 2,957,285.
  • This machine 4 has two magazines, 5, for holding lengths of filter material, such as cellulose and acetate, for example, and two rotary drums, 6, which serve to receive them.
  • the machine 4 is worked by the driving chain 7.
  • the drums 6 contain grooves, running parallel to their axes of rotation, to receive the lengths of filter material, the drums also having radial cutouts in which cutters rotate for dividing the rod-like lengths of filter material into the smaller filter wads l and 2.
  • the uniformly spaced and axially aligned filter wads l and 2 are fed continuously to a filter-tip cover strip, 3, likewise continuously fed, on which they are deposited, being guided at the sides, as shown in FIG. 5, by the guide members 10 and 11 and held in place, in relation to one another, by a pressure band, 12, situated above and running round in synchrony with the cover strip 3.
  • That face of the cover strip 3 which lies towards the filter wads l and 2 is coated with an adhesive such as, for instance, a thermoplastics, which softens under the action of heat, so that it is possible for the individual filter wads l and 2, directly they have been discharged on to the cover strip 3, to be secured to it with the aid of a heater, 13, thereby preventing relative motion, that is to say preventing any alteration in their spacing.
  • an adhesive such as, for instance, a thermoplastics, which softens under the action of heat, so that it is possible for the individual filter wads l and 2, directly they have been discharged on to the cover strip 3, to be secured to it with the aid of a heater, 13, thereby preventing relative motion, that is to say preventing any alteration in their spacing.
  • the cover strip 3 rests on a support, 14, while the heater 13 can be pressed from below, through a slot in the support 14, against the cover strip 3 and thus indirectly against the filter wads 1 and 2 that require to be anchored in place
  • This assembly is then carried by the conveyor belt 15 to a filler head, 16, shown in greater detail in FIGS. 2, 3 and 4, which serves for the introduction of free-running filter material such as charcoal, for example, into the space 17 formed between the individual filter wads l and 2.
  • the downward-facing discharge side of the storage container 18 of the filler head 16 is connected to a suction arrangement, 21, situated (when considered in relation to the directon of motion of the cover strip 3) before the charge aperture 20 of the filler head 16, by a sliding member, 19, which rests on the filter wads l and 2 and encloses them to the extent of at least
  • the width of the sliding member 19 is approximately equal to the diameter of the filter wads 1 and 2 it is desired to wrap in the cover strip 3, the side faces 19a and 19b running parallel to each other and to the direction of motion of the conveyor belt 15 and serving to provide sealing contact with the inner faces 3a and 3b of the U-arms of the cover strip 3. In this way, spaces bounded by the end faces of the filter wads l and 2, the cover strip 3 and the sliding surface of the sliding member 19 are formed at 17.
  • the distance between the suction aperture 22 and the charge aperture 20 is greater than the length a of the spaces 17 formed between the wads 1 and 2, so that, as the wads advance, these spaces, between the suction aperture 22 and the charge aperture 20, are to all intents and purposes enclosed so as to be completely airtight, apart from the filter wads l and 2, the result being that the suction arrangement 21 is able to evacuate these spaces through the wads 1 and 2. Because of the partial vacuum prevailing in the spaces 17, the U- arms of the shaped cover strip 3 are held and virtually sealed against the side faces 19a and 19b of the sliding member 19.
  • the length of the suction aperture 22 in the sliding face of the sliding member, measured in the direction of travel of the cover strip 3, is greater than the maximum length b of the wads to be covered, so that the suction is able to act also on the end faces of the wads between which the spaces 17 to be evacuated are situated. This is particularly important where the filter wads in use have their lowest flow resistance in the axial direction. Moreover, the entire filter wad adjacent to the space 17 to be evacuated is thus brought under partial vacuum, so that nothing can detract from the effectiveness thereof.
  • the filler head 16 is equipped with a vibrator, 23, the effect of which is to cause the filler head 16, mounted resiliently on flat springs (24, in FIG. 3), to vibrate at 100 cycles per second in a vertical plane.
  • the filler head 16 is suspended by the springs 24 from a guide, 26, which runs parallel to the track 25 provided for the conveyor belt 15, and clamped to the said guide by means of screws, 27.
  • the screws 28 serve for horizontal alignment of the sliding member 19 in relation to the filter wads l and 2 below it, while the screws 29, rigidly connected to the guide 26, enable the amplitude of vibration of the filler head 16, imparted by the vibrator 23, to be regulated.
  • the discharge slot can be made relatively broad, this being very important for unhindered follow-on of the freerunning filter material.
  • a semi-circular trimming edge, 30, which bounds the cross-section of the filter wads l and 2 as they pass through and trims off the excess of free-running filter material. This trimming edge 30, being exposed to heavy wear when the equipment is running, is provided on an interchangeable trimmer, 31, which .can be inserted into the sliding member 19.
  • the underside of the trimmer 31 is provided with transverse grooves, 310, which remove any grains of the free-running filter material that still remain on the filter wads, pick them up and release them into the succeeding spaces 17.
  • the trimmer.3l may also be equipped with a suction aperture, through which the dust coating can beremoved by the creation of a very slight partial vacuum.
  • the bottom portion, 32, of the storage container 18 is made cylindrical.
  • a scoop-like closing member, 33 in sliding contact with the interior face of the cylindrical member 32 and designed to turn about the longitudinal centre line thereof.
  • a handle, 34 For rotating the closing member 33, there is a handle, 34, while a stud, 36, thrust by a spring towards the semi-circular plate 35, can drop home into recesses in various positions on the plate 35.
  • the closing member 33 is thus shaped like a section of the curved'surface of a cylinder and is made as thin as possible, so as to keep to the minimum the force that needs to be exertedon the handle 34 to move the closing member when the container 18 is full.
  • the closing edge of the closing member 33 is also'made oblique or sharpened in relation to the inner face of the cylindrical member 32, so as to'faeilitate movement of the closing member 33, and it runs helically round the longitudinal axis 37 of the cylindrical member 32, so that as the closing member 33 is turned in the direction for opening, it is initially the end of the discharge slot 20 that lies towards the suction aperture 22 which is freed, this being followed by those parts of the discharge slot 20 which are farther from the suction aperture 22 as the closing member continues to turn.
  • the storage container 18 which is fed from the reverse container 38 (FIG. 1), from being over-filled, it is entered by two lengths of pipe, 39, each with its top end joined to a feed pipe, 40, for the freerunning filter material, and with its bottom end situated at the filling level of the container 18.
  • the pipe 39 nearer to the suction aperture 22 contains a cutout, 41, facing towards the suction aperture, to increase the outflow of filter material, the consumption of which is greatest at that point.
  • the storage container 18 is also provided with a shutter, 42, which can be slid across the lower ends of the feed pipes 40.
  • the upper part 44 of the track 25 is so shaped that the cover strip 3 is converted into a complete tube, a suction device being provided at 45 for the removal of any free-running filter material remaining between the edges of the cover strip.
  • a sealing unit, 46 which, as shown in FIG. 6, has a heatable element, 47, which can be applied to the tube that is to be sealed.
  • a heatable element, 47 which can be applied to the tube that is to be sealed.
  • the heatable element 47 is provided with a guidance channel, 48, semi-circular in section, its radius of curvature being the same as the outside radius of the tube that is to be produced.
  • the guidance channel 48 in the heatable element 47 is immediately followed by another such channel 49, in a cooling unit, 50, which can be lowered on to the tube so as to cause the heat-softened plastics to set.
  • the tube When the tube has been struck together, it is passed to a cutting head, 51, in which it is divided up in such a way that the length of each filter assembly is six times the length of a filter for a cigarette.
  • a timing mechanism, 52 (FIG. 9), is also provided, to synchronise the machine 4 feeding the tilter wads l and 2 on to the cover strip 3 with the drive of the cutting head 51 by which the tube filled with filter material is divided into given lengths.
  • the drives of the feed mechanism 4 and that of the cutting head 51 are linked together by a two-part shaft, 53a/53b. Between the first part 53a and the second part 53b of the connecting shaft is an adjusting member, 54,
  • the adjusting member 54 has two parts, 55 and 56, in axial alignment, which can slide axially in relation to each other, the part 56 bearing guides, 57, which engage in helical grooves, 58, in the other part, 55.
  • a spindle, S9 driven by an electric motor, is provided, which in rotating displaces the intermediate member 60 and hence also the part 56.
  • FIG. 1 and 8 Another adhesive joining unit, 61 (FIGS. 1 and 8), in which the heater 62 bears against the tube from underneath.
  • the guide channel 63 in this heater is semi-circular in section and cements the as yet uncemented part of the cover strip 3 formed into a tube to the filter wads 1 and 2, so that these adhere to the cover strip 3 round their entire periphery and no free-running filter material can escape from the spaces 17, between the faces of the wads and the strip 3.
  • Endless spiral wires, 64 run round and exert pressure on the upper side of the length of tube.
  • a method of manufacturing a cigarette filter in which sections of fibrous and sections of free-running filter materials are arranged in succession which comprises the steps of securing succession of filter elements or wads, uniformly spaced and in axial alignement, to a continuously fed filter-tip cover strip there being provided between adjacent filter wads a succession of spaces, with feed apertures, for fillings of freerunning filter materials;
  • a device for manufacturing cigarette filters in which sections of fibrous and sections of free-running filter materials are arranged in succession which comprises;
  • a feed mechanism for continuously advancing a cover strip in one direction
  • a forming member adjacent said means of guidance and conveyance by which the cover strip, as it moves forward, is wrapped round the spaced apart filter wads attached to it so as to form at least approximately a letter U;
  • a filling head for charging free-running filter material into the evacuated spaces between the wads, this filling head being situated above the means of guidance and conveyance and connected to the suction arrangement by a common sliding surface which makes a sealing contact on the upper sides of the filter wads travelling forward with the cover strip;
  • a device as claimed in claim 2 provided with means of synchronisation, for synchronising the drive of the feed (4), by which the filter wads (1 and 2) are fed on to the cover strip (3), with the drive for the means (51) by which the tube filled with filter material is divided into given lengths, the drives for the feed (4) and for the said dividing means (51) being linked together by a two-part shaft (53a/53b), and adjusting member (54) being provided between the first and second parts (53a and 53b respectively) of the connecting shaft and rotating with the second part (53b) for altering the angular position of the two parts (53a and 53b) of the connecting shaft, within given limits, in relation to each other.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Details Of Cutting Devices (AREA)
US00185740A 1970-10-12 1971-10-01 Process of making cigarette filters, and apparatus therefor Expired - Lifetime US3762281A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1510170A CH517448A (de) 1970-10-12 1970-10-12 Verfahren zur Herstellung einer Zigarettenfiltereinheit und Einrichtung zur Durchführung des Verfahrens

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US3762281A true US3762281A (en) 1973-10-02

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US00185740A Expired - Lifetime US3762281A (en) 1970-10-12 1971-10-01 Process of making cigarette filters, and apparatus therefor

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US (1) US3762281A (xx)
JP (1) JPS5412558B1 (xx)
KR (1) KR780000509B1 (xx)
AR (1) AR201182A1 (xx)
AT (3) AT315049B (xx)
BE (1) BE772911A (xx)
BG (1) BG21000A3 (xx)
CA (1) CA943031A (xx)
CH (1) CH517448A (xx)
DK (1) DK132367C (xx)
ES (2) ES395923A1 (xx)
FI (1) FI51425C (xx)
FR (1) FR2109848A5 (xx)
GB (1) GB1332423A (xx)
IE (1) IE35700B1 (xx)
IL (1) IL37646A (xx)
IT (1) IT941584B (xx)
LU (1) LU64040A1 (xx)
NL (1) NL164191C (xx)
OA (1) OA03810A (xx)
SE (1) SE374646B (xx)
SU (3) SU521829A3 (xx)
YU (2) YU35304B (xx)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837264A (en) * 1973-05-07 1974-09-24 Brown & Williamson Tobacco Intermittent process for manufacture of a multiple filter rod having spaced pockets containing particulate material
US3884741A (en) * 1974-02-22 1975-05-20 Brown & Williamson Tobacco Method and apparatus for the manufacture of filter rods containing particulate material by a split rod technique
US3957563A (en) * 1974-02-22 1976-05-18 Brown & Williamson Tobacco Corporation Method and apparatus for the manufacture of filter rods containing particulate material by a split rod technique
US4015514A (en) * 1976-01-29 1977-04-05 Philip Morris Incorporated Apparatus for making cigarette filters
US4020751A (en) * 1974-11-07 1977-05-03 Hauni-Werke Korber & Co., Kg Apparatus for making composite filter plugs
US4174720A (en) * 1977-04-26 1979-11-20 Liggett Group Inc. Glue transfer apparatus for cigarette filters
US4185645A (en) * 1975-12-08 1980-01-29 F. J. Burrus & Cie Production of cigarette filter units
US4412829A (en) * 1980-04-08 1983-11-01 Baumgartner Papiers, S.A. Production of cigarette filter units
US20090075798A1 (en) * 2007-09-18 2009-03-19 Philip Morris Usa Inc. Cigarette filter
US20090183836A1 (en) * 2006-05-24 2009-07-23 International Tobacco Machinery B.V. Apparatus for Glueing Together the Wrap of An Endless Tow of Filter Material
US8769785B2 (en) 2009-02-23 2014-07-08 Rhodia Acetow Gmbh Method for producing multiple fibre strips in parallel and apparatus for executing said method
US20160120215A1 (en) * 2013-06-11 2016-05-05 International Tobacco Machinery Poland Sp. Z O.O. Method and shoe for pressing segments of multi-segment filter
US10266287B2 (en) * 2013-06-03 2019-04-23 Essentra Filter Products Development Co. Pte. Ltd Method of manufacture of a dispenser
US11076635B2 (en) 2013-02-15 2021-08-03 International Tobacco Machinery Poland Sp. Z O. O. Method, mechanism and apparatus for momentary compression of filter material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL227873B1 (pl) * 2012-01-18 2018-01-31 International Tobacco Machinery Poland Spólka Z Ograniczona Odpowiedzialnoscia Sposób podawania kapsułek i zespół do podawania kapsułek
PL222242B1 (pl) * 2012-01-18 2016-07-29 Int Tobacco Machinery Poland Spółka Z Ograniczoną Odpowiedzialnością Sposób i zespół do przekazywania kapsułek
PL222268B1 (pl) * 2012-01-18 2016-07-29 Int Tobacco Machinery Poland Spółka Z Ograniczoną Odpowiedzialnością Sposób i urządzenie do podawania kapsułek

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312151A (en) * 1963-10-04 1967-04-04 Molins Organisation Ltd Apparatus for manufacturing composite filter plugs
US3482488A (en) * 1968-01-12 1969-12-09 Brown & Williamson Tobacco Multiple filter manufacture
US3610112A (en) * 1968-06-28 1971-10-05 Molins Machine Co Ltd Manufacture of filters for cigarettes and like smokers' articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312151A (en) * 1963-10-04 1967-04-04 Molins Organisation Ltd Apparatus for manufacturing composite filter plugs
US3482488A (en) * 1968-01-12 1969-12-09 Brown & Williamson Tobacco Multiple filter manufacture
US3610112A (en) * 1968-06-28 1971-10-05 Molins Machine Co Ltd Manufacture of filters for cigarettes and like smokers' articles

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837264A (en) * 1973-05-07 1974-09-24 Brown & Williamson Tobacco Intermittent process for manufacture of a multiple filter rod having spaced pockets containing particulate material
US3884741A (en) * 1974-02-22 1975-05-20 Brown & Williamson Tobacco Method and apparatus for the manufacture of filter rods containing particulate material by a split rod technique
US3957563A (en) * 1974-02-22 1976-05-18 Brown & Williamson Tobacco Corporation Method and apparatus for the manufacture of filter rods containing particulate material by a split rod technique
US4020751A (en) * 1974-11-07 1977-05-03 Hauni-Werke Korber & Co., Kg Apparatus for making composite filter plugs
US4185645A (en) * 1975-12-08 1980-01-29 F. J. Burrus & Cie Production of cigarette filter units
US4015514A (en) * 1976-01-29 1977-04-05 Philip Morris Incorporated Apparatus for making cigarette filters
US4174720A (en) * 1977-04-26 1979-11-20 Liggett Group Inc. Glue transfer apparatus for cigarette filters
US4412829A (en) * 1980-04-08 1983-11-01 Baumgartner Papiers, S.A. Production of cigarette filter units
US20090183836A1 (en) * 2006-05-24 2009-07-23 International Tobacco Machinery B.V. Apparatus for Glueing Together the Wrap of An Endless Tow of Filter Material
US20090075798A1 (en) * 2007-09-18 2009-03-19 Philip Morris Usa Inc. Cigarette filter
US9204668B2 (en) * 2007-09-18 2015-12-08 Philip Morris Usa Inc. Cigarette filter
US8769785B2 (en) 2009-02-23 2014-07-08 Rhodia Acetow Gmbh Method for producing multiple fibre strips in parallel and apparatus for executing said method
US11076635B2 (en) 2013-02-15 2021-08-03 International Tobacco Machinery Poland Sp. Z O. O. Method, mechanism and apparatus for momentary compression of filter material
US10266287B2 (en) * 2013-06-03 2019-04-23 Essentra Filter Products Development Co. Pte. Ltd Method of manufacture of a dispenser
US20160120215A1 (en) * 2013-06-11 2016-05-05 International Tobacco Machinery Poland Sp. Z O.O. Method and shoe for pressing segments of multi-segment filter

Also Published As

Publication number Publication date
CA943031A (en) 1974-03-05
FI51425B (xx) 1976-09-30
YU254971A (en) 1980-06-30
CH517448A (de) 1972-01-15
DE2065727A1 (de) 1975-04-03
AT315049B (de) 1974-05-10
BE772911A (fr) 1972-01-17
SU521829A3 (ru) 1976-07-15
OA03810A (fr) 1971-12-24
IL37646A0 (en) 1971-11-29
YU20378A (en) 1982-06-30
SU563112A3 (ru) 1977-06-25
KR780000509B1 (en) 1978-10-26
FI51425C (fi) 1977-01-10
IE35700B1 (en) 1976-04-28
NL164191B (nl) 1980-07-15
AR201182A1 (es) 1975-02-21
YU35304B (en) 1980-12-31
DK132367B (da) 1975-12-01
IL37646A (en) 1974-09-10
ES395923A1 (es) 1974-10-16
NL7112095A (xx) 1972-04-14
AT302864B (de) 1972-10-25
BG21000A3 (bg) 1976-01-20
DE2065727B2 (de) 1977-05-26
AT309296B (de) 1973-08-10
FR2109848A5 (xx) 1972-05-26
ES420216A1 (es) 1976-07-01
DE2057451A1 (de) 1972-05-25
JPS5412558B1 (xx) 1979-05-23
GB1332423A (en) 1973-10-03
IT941584B (it) 1973-03-10
IE35700L (en) 1972-04-12
NL164191C (nl) 1980-12-15
DE2057451B2 (de) 1976-10-28
SE374646B (xx) 1975-03-17
SU572176A3 (ru) 1977-09-05
DK132367C (da) 1976-05-03
LU64040A1 (xx) 1972-04-12

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