US3910166A - Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter material - Google Patents

Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter material Download PDF

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Publication number
US3910166A
US3910166A US439524A US43952474A US3910166A US 3910166 A US3910166 A US 3910166A US 439524 A US439524 A US 439524A US 43952474 A US43952474 A US 43952474A US 3910166 A US3910166 A US 3910166A
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United States
Prior art keywords
web
section
particulate material
deposition
recited
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
US439524A
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English (en)
Inventor
John H Sexstone
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.)
Brown and Williamson Holdings Inc
Original Assignee
Brown and Williamson Tobacco Corp
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 Brown and Williamson Tobacco Corp filed Critical Brown and Williamson Tobacco Corp
Priority to US439524A priority Critical patent/US3910166A/en
Priority to AU77439/75A priority patent/AU492451B2/en
Priority to NL7501056A priority patent/NL7501056A/xx
Priority to FI750273A priority patent/FI58861C/fi
Priority to ZA00750659A priority patent/ZA75659B/xx
Priority to GB433375A priority patent/GB1448964A/en
Priority to CH120475A priority patent/CH588220A5/xx
Priority to DE19752504134 priority patent/DE2504134C3/de
Priority to JP50013916A priority patent/JPS5145680B2/ja
Priority to DK35875A priority patent/DK146814C/da
Priority to BR667/75D priority patent/BR7500667A/pt
Priority to CA219,270A priority patent/CA1013227A/en
Priority to BE153039A priority patent/BE825161A/fr
Application granted granted Critical
Publication of US3910166A publication Critical patent/US3910166A/en
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
    • A24D3/0212—Applying additives to filter materials
    • A24D3/0225—Applying additives to filter materials with solid additives, e.g. incorporation of a granular product

Definitions

  • FIGI 4 US. Patent Ofi tt. 7,1975 Sheet 2 of3 3,910,166
  • this invention relates to a method and apparatus for the manufacture of such filter plugs from a web of material, such as cellulose acetate, with particulate material deposited on the web and gathered with the web to form the filter plug.
  • the particulate material in these processes is difficult to control, causing housekeeping problems.
  • the material may find its way into portions of the filter and the tobacco columns of the cigarettes where its presence is unwanted and undesirable to the smoker.
  • U.S. Pat. No. 3,371,000 discloses a variety of techniques for placing strips of particulate material on a web and gathering the web into a filter plug.
  • Davenport prints strips of a slurry containing particulate material on cellulose acetate, paper or other material utilized in the forming of filter rods.
  • Davenport injects, the slurry by a needle-nozzle combination into a preformed plug at spaced positions.
  • FIGS. 15 and 16 disclose the utilization of a rotating wheel hav ing recesses in its outer rim for transporting granular material from a hopper to spaced positions on a web of filter forming material, the web being brought into contact with the outer rim of the wheel and traveling through a defined arc with the wheel whereby a transfer of the particulate material to the web is effected by gravity flow.
  • the material deposited on the web may be carried off by zones of contact with portions of the plug maker before the gathered rod is enwrapped (col. l3, 11. 5860).
  • a web of porous paper, non-woven fabric or the like is applied to the upper surface of the web, tow or yarn and moves with the web, tow or yarn and is enwrapped with the gathered rod of web, tow or yarn (cols. 13, 1.73 to col. 14, 1.2).
  • Davenport protected the particulate material as it entered the garniture to prevent its removal from the web.
  • Formation of the chevron pattern has the undesirable effect of extending the particulate material through a considerable length of the filter rod, even to the extent that when the rod is severed into individual plugs, the particulate material will appear on the cut edge of the filter plugs.
  • the particulate material produces an undesirable taste.
  • An additional object of the invention is to produce a high quality filter plug having the desired characteristics for properly filtering the smoke and being of a shape that is acceptable to provide a high quality smoking article.
  • Another object of this invention is to provide such a method and apparatus which minimizes loss of particulate material, thus avoiding housekeeping problems, and maintains the particulate material in the desired position on the web so that the particulate material will be positioned in a desirable manner within the filter rod.
  • the method of this invention comprises the steps of providing a continuous web of filtering material having an elongated axis, spreading the web in a direction normal to the axis to a predetermined width, cutting the web along a line parallel to the axis to provide first and second web sections, feeding the first web section in a first axial direction in a fiattened state to a deposition position and there delivering amounts of loose particulate material in rows extending across the first web section and being spaced axially thereof, feeding the second web section into overlying relation to the deposited particulate material and the first web section whereby said material is positioned at axially spaced positions between the first and second web sections, and forming the first and second web sections and the particulate material into a cylindrical filter rod.
  • the apparatus of this invention comprises means for transporting a continuous web of filter material having an elongated axis, and spreading the web to a predetermined width, means op eratively associated with said transporting means for cutting the web in a direction parallel to its axis to divide the web into first and second sections, means for transporting the first section in a first direction, means for depositing loose particulate material on the upper surface of the first section in rows across said section, the rows being spaced axially thereof, means for transporting the second section into adjacent overlying relation to the first section and the loose particulate material, and means for forming the first and second web sections and the particulate material into a cylindrical filter rod.
  • FIG. 1 is a side elevational view of the apparatus of this invention.
  • FIG. 2 is a perspective view showing the means for cutting the web into first and second sections, means for transporting the first section of the web to a particulate deposition means and means for transporting the second section in a manner to bypass the deposition means and into overlying relation to the first section and the deposited particulate material.
  • FIG. 3 is a sectional view through the deposition wheel assembly of FIG. 1 illustrating the deposition of particulate material on the first web section.
  • FIG. 4 is a sectional view transversely through the first web section showing the particulate material positioned in spaced deposits across the upper surface of the web section.
  • FIG. 5 is a sectional view through the first and second web sections after the second web section is moved into overlying relation to the first web section and the particulate material showing the sandwich-type construction so provided.
  • the apparatus 10 for forming the desired filter plugs includes a spreading and plasticizing assembly 12, a web cutting assembly 14, transporting assemblies 16 and 17 for the first and second web sections respectively, a particulate material deposition assembly 18, a wrapper feeding assembly 20, a rod-forming assembly 22, and a filter plug cutting assembly 24.
  • the tow is comprised of a web 26 of fibrous cellulose acetate.
  • a web 26 of fibrous cellulose acetate may be utilized.
  • paper, bulk yarn, other filamentary tows or any other suitable material may be utilized.
  • the material to be deposited on web 26 must have the desired absorbative and adsorbative properties, and be either in particulate or granular form.
  • the particulate material may be finely divided charcoal, silica gel, volcanic salts, ion exchange resins, clays, and the like.
  • a particular additive contemplated by this invention is the ion exchange resin DUOLITE, which may be of the type disclosed in commonly assigned US. Pat. No. 3,716,500, granted Feb. 13, 1973.
  • the means for tensioning the web of filter material and spreading the web to a predetermined width is characterized by assembly 12.
  • assembly 12 a continuous cellulose acetate tow having an elongated axis is drawn from a conventional storage bale into the tow opening and plasticizing assembly 12 to form web 26.
  • the tow is spread or bloomed in a conventional fashion into a web 26 of approximately 10 inch width.
  • the open web 26 then passes through a conventional plasticizer applicator, not specifically shown.
  • the plasticizer for cellulose acetate, usually employed, is triacetin.
  • the means for cut ting the web 26 in a direction parallel to its axis to divide the web 26 into first and second web sections 28 and 30, respectively is characterized by cutting assembly 14.
  • the cutting assembly 14 as illustrated herein, includes a roller 34 and cutting wheel 36, the cutting wheel 36 being positioned in abutting relation to roller 34 and each being rotatable about an axis normal to the axis of the web.
  • the roller 34 is operatively associated with a delivery roll 32 and cooperatively acts with roll 32 to pull the web 26 from the assembly 12.
  • the delivery roll 32 and roller 34 are mounted in conventional fashion to receive the plasticized web 26 from assembly 12 and convey the web for further processing.
  • the cutting wheel 36 is mounted on shaft 38 which is carried in conventional fashion on a suitable frame and driven in cooperative relation with the roller 34 so that the cutting edge of the cutting wheel 36 will bear against roller 34 and sever web 26 into first and second sections 28 and 30.
  • the cutting wheel 36 actually crushes the fibers of the web 26, the web coming apart along the line of the crushed fibers.
  • means 16 are provided for transporting the first web section 28 in a first direction through the particulate material deposition assembly 18.
  • the transporting means 16 for the first section 28 is preferably provided by the delivery roll 32, a guide 40, conveying belt or tape assembly 42, and a pair of rollers 44 and 46 disposed on opposite sides of the deposition assembly 18.
  • the first web section 28 is taken from the delivery roll 32 and directed downwardly about guide 40 to a continuous tape or belt 43 and beneath roller 44, positioned at the upper surface of tape 43.
  • the continuous tape 43 extends between and beneath each of the rollers 44 and 46 whereby the first web section 28 is fed between the tape 43 and rollers 44 and 46 and rests on tape 43 during its movement through the deposition assembly 18. It is in this manner that the first web section 28 is delivered in a flattened condition to the deposition assembly 18 for receipt of the particulate material.
  • the first web section 28 is then fed with the particulate material deposited thereon between roller 46 and tape 43, and thence to the garniture assembly 22.
  • the tape 43 is driven in conventional manner by assembly 42.
  • the means 17 for transporting the second web section 30 into adjacent overlying relation to the first web section 28 and the loose particulate material at a point after deposition of said material is comprised of delivery roll 32, a guide 48 and the roller 46.
  • the delivery roll 32 and the roller 46 are common to transport means 16 and 17.
  • the second web section 30 is directed over the deposition means 18 for ease of operation and to avoid complex arrangements of rollers and guides. It is in this manner that the second section 30 may be brought by the use of a single guide 48 from the delivery roll 32 into the desired overlying relation to the first section 28 of web 26 and the deposited particulate material.
  • the first and second web section transporting means 16 and 17 include the delivery roll 32 and a pair of guides 40 and 48 to direct the respective sections after departure from the delivery roll 32.
  • Guide 48 is positioned to direct the second web section 30 from roll 32 to roller 46 on the opposite side of the deposition means 18.
  • the guide 40 is positioned to direct the first web section 28 to roller 44 and tape 43.
  • the first web section 28 then proceeds through the deposition assembly 18 to roller 46 where the two sections are jointed in contacting relation on each side of the particulate material.
  • the means provided for depositing loose particulate material on the upper surface of the first web section 28 in rows extending across the section and spaced axially thereof is comprised of assembly 18.
  • the assembly 18, as illustrated in FIG. 3, is comprised of a hopper 50, a deposition wheel 52, and means 54 for supplying a vacuum to draw the particulate material down onto the web from the deposition wheel 52 and to retain the material in position for a desired distance.
  • the vacuum means 54 is not illustrated in detail, but is conventional in nature. While the apertures 56 through which the vacuum is drawn are not illustrated as extending to the roller 46, it may be desirable: to do so in certain instances, to prevent displacement of the particulate material during movement of the web.
  • the deposition wheel 52 is preferably comprised of a rotatable cylinder 58 and a cylindrical casing 60 in which cylinder 58 is housed.
  • the casing 60 is preferably designed such that the outer surface of cylinder 58 is in contacting relation to the inner surface of casing 60.
  • the cylinder 58 contains a plurality of recesses 62 which are positioned in sets spaced axially of the cylinder 58. Each of the sets contains a plurality of recesses spaced circumferentially of the cylinder 58.
  • casing 60 contains a pair of ports 64 positioned at each of the sets of recesses 62 to effect transfer of the particulate material from the hopper 50 to the recesses 62 and thence to the web section 28.
  • the hopper 50 defines a plurality of openings 65 in aligned overlying relation to the ports 64 in casing 60.
  • the particulate material passes through opening 65, ports 64 and into recesses 62.
  • the level of material in hopper 50 can be maintained by conventional means.
  • Cylinder 58 is driven in conventional fashion in synchronization with the movement of the web section 28 so that recesses 62 in cylinder 58 are moved into aligned relation with discharge ports 64 in the casing 60 to provide deposits of particulate material in rows across the web 28, the rows being spaced axially of the web at a desired dimension.
  • a means for forming the first and second web sections 28 and 30 and said particulate material into a cylindrical filter rod is characterized as a rod-forming assembly 22.
  • the assembly is a conventional garniture assembly which gathers the first and second web sections 28 and 30 along with the particulate material into a cylindrical filter rod.
  • the method of manufacturing tobacco smoke filters constituting this invention commences with the step of providing a web of filter material having an elongated axis and being continuous in the direction of said axis.
  • the web is comprised of cellulose acetate.
  • other filter materials may be utilized.
  • the web is then spread in a direction normal to the axis to a predetermined width. Typically, the web is spread to approximately 10 inches.
  • Plasticizer is then applied. Referring to FIG. 1, spreading and plasticizing occur in assembly 12.
  • the method includes the step of cutting the web along a line parallel to the axis of the web to provide first and second web sections, each of these sections having an elongated axis.
  • the web is cut after the steps of spreading the tow and applying the plasticizer.
  • the web 26 is severed by the cutting wheel 36, which is driven in abutting relation to roller 34.
  • the term cutting is intended to include a crushing of the fibers along a line and separating of the sections along that line.
  • the method further includes the step of feeding the first web section 28 in a first axial direction in a flattened condition to a deposition position.
  • the feeding of the first web section 28 may occur continuously, as illustrated, or intermittently. In the latter case, conventional dwell feeding assemblies would be substituted.
  • the particulate material is metered at the deposition point in such a manner as to provide a desired amount of particulate material in each of the individual rows.
  • This metering can be accomplished in various ways, for instance, by selecting variously sized recesses 62 in cylinder 58.
  • the accuracy and consistency of the metering is achieved by providing the spaced deposits as opposed to a continuous strip of particulate material.
  • the method further includes the step of feedingthe second web section 30 in a second axial direction to bypass the deposition position and into overlying relation to the deposited particulate material and said first web-section whereby the material is positioned at spaced intervals axially of the sections and between the sections 28 and 30.
  • the second web section 30 is fed over the deposition means to simplify the handling of the web, reducing potential entanglement and the need for increased number of rollers and guides.
  • the method includes the step of gathering the first and second web sections 28 and 30 and the particulate material into a cylindrical filter rod. Preferably, this occurs immediately after placement of particulate material on the first web section 28 and the positioning of the second web section 30 in overlying contact to the first web section 28 and the particulate material.
  • a method of manufacturing tobacco filters comprising the steps of: v
  • a method as recited in claim 1 including the further step of metering said particulate material to provide the desired amount of material in each of said spaced rows.
  • a method as recited in claim 1 including the step of creating a low pressure area beneath said web in the area of deposition of said loose particulate material to assist in deposition and retention of said material in the desired position.
  • An apparatus for manufacturing tobacco smoke filters comprising: v
  • said cutting means is comprised of a cutting wheel and a roller, said cutting wheel being positioned in abutting relation to said roller and each being rotatable about an axis normal to the axis of said web whereby said web is fed between said cutting wheel and said roller, the cutting wheel serving to divide said web into two sec tions.
  • said means for transporting said first section includes a pair of roller means in spaced relation on opposite sides of said deposition means for guiding and moving said first section through said deposition means in a flattened condition.
  • transporting means further includes a continuous tape extending beneath and at least between the pair of roller means, whereby the first web section is fed between said tape and said rollers and rests on said tape during its movement through the deposition means.
  • said second web section transporting means includes the same roller means utilized for guiding and transporting the first web section after deposition, whereby movement into said overlying relation occurs at the point of said roller means.
  • said first and second web section transporting means further includes a delivery roll between the cutting means and the deposition means and a pair of guides, the first of said guides being positioned to direct said second web section from said roll to the roller means on the opposite side of said deposition means and said other guide being positioned to direct said first web section from said roll to the roller means on the same side of said deposition means.
  • deposition means is comprised of a rotatably driven cylinder having a plurality of axially spaced sets of recesses, each of said sets comprising a plurality of recesses defined at spaced positions circumferentially of said cylinder.
  • said deposition means further includes a hopper operatively mounted above said cylinder, said hopper having a plurality of openings spaced in alignment with said sets of recesses whereby the rotation of said cylinder brings said recesses into alignment with the openings to supply particulate material to said recesses.
  • An apparatus as recited in claim 10 further comprising means for providing a low pressure area beneath the web at the area of deposition of the particu late material to assist in depositing and retaining the material on the web.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US439524A 1974-02-04 1974-02-04 Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter material Expired - Lifetime US3910166A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US439524A US3910166A (en) 1974-02-04 1974-02-04 Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter material
AU77439/75A AU492451B2 (en) 1975-01-20 Method and apparatus forthe manufacture of filter rods containing particulate material froma split web of filter
NL7501056A NL7501056A (nl) 1974-02-04 1975-01-29 Werkwijze en inrichting voor het vervaardigen ilterpropjes te gebruiken bij sigaretten rgelijke voorwerpen.
CH120475A CH588220A5 (fr) 1974-02-04 1975-01-31
ZA00750659A ZA75659B (en) 1974-02-04 1975-01-31 Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter
GB433375A GB1448964A (en) 1974-02-04 1975-01-31 Method and apparatus for the manufacture of tobacco smoke filters
FI750273A FI58861C (fi) 1974-02-04 1975-01-31 Foerfarande och anordning foer framstaellning av tobaksfilter innehaollande partikelmaterial av ett delat filtermaterialband
DE19752504134 DE2504134C3 (de) 1974-02-04 1975-01-31 Verfahren und Vorrichtung zum Herstellen von Tabakrauchfiltern
JP50013916A JPS5145680B2 (fr) 1974-02-04 1975-02-01
BR667/75D BR7500667A (pt) 1974-02-04 1975-02-03 Processo de fabricacao de filtros para tabaco e aparelho para sua realizacao
CA219,270A CA1013227A (en) 1974-02-04 1975-02-03 Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter
DK35875A DK146814C (da) 1974-02-04 1975-02-03 Fremgangsmaade og apparat til fremstilling af tobaksroegfiltre
BE153039A BE825161A (fr) 1974-02-04 1975-02-04 Procede et appareil pour la fabrication de filtres pour la fumee du tabac

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US439524A US3910166A (en) 1974-02-04 1974-02-04 Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter material

Publications (1)

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US3910166A true US3910166A (en) 1975-10-07

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Application Number Title Priority Date Filing Date
US439524A Expired - Lifetime US3910166A (en) 1974-02-04 1974-02-04 Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter material

Country Status (11)

Country Link
US (1) US3910166A (fr)
JP (1) JPS5145680B2 (fr)
BE (1) BE825161A (fr)
BR (1) BR7500667A (fr)
CA (1) CA1013227A (fr)
CH (1) CH588220A5 (fr)
DK (1) DK146814C (fr)
FI (1) FI58861C (fr)
GB (1) GB1448964A (fr)
NL (1) NL7501056A (fr)
ZA (1) ZA75659B (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214508A (en) * 1977-10-13 1980-07-29 Philip Morris Incorporated Method and apparatus for making cigarette filters of filamentary material
EP0014477A1 (fr) * 1979-02-12 1980-08-20 Philip Morris Incorporated Procédé et appareil pour former une tige de filtre contenant un matériau particulaire, notamment une tige de filtre imprégnée de charbon de bois
US4281671A (en) * 1978-04-21 1981-08-04 American Filtrona Corporation Production of tobacco smoke filters
FR2487644A1 (fr) * 1980-08-04 1982-02-05 Molins Ltd
US4528050A (en) * 1981-07-30 1985-07-09 Molins Plc Producing filler material, particularly for cigarette filters
US4861324A (en) * 1985-04-11 1989-08-29 Japan Tobacco Inc. Apparatus for manufacturing tobacco filter
US4862905A (en) * 1987-06-15 1989-09-05 R. J. Reynolds Tobacco Company Rods containing pelletized material
US5025814A (en) * 1987-05-12 1991-06-25 R. J. Reynolds Tobacco Company Cigarette filters containing strands of tobacco-containing materials
US5902431A (en) * 1997-06-04 1999-05-11 R. J. Reynolds Tobacco Company Composite web forming apparatus and method
US6576034B2 (en) * 1999-02-17 2003-06-10 Filtrona Richmond, Inc. Method and apparatus for spinning a web of mixed fibers, and products produced therefrom
EP1372416A2 (fr) 2001-03-27 2004-01-02 Hauni Maschinenbau AG Procede et dispositif de fabrication d'un filtre et filtre correspondant
US6837281B2 (en) 2001-08-17 2005-01-04 Philip Morris Incorporation Apparatus and method for filling cavities with metered amounts of granular particles
US20060196513A1 (en) * 2004-12-30 2006-09-07 Philip Morris Usa Inc. Triple hopper max with built-in granulated cavity filling capability
US20120080043A1 (en) * 2009-04-09 2012-04-05 Rene Naenen Introducing Objects Into Elongate Smoking Articles
WO2013132434A1 (fr) 2012-03-05 2013-09-12 Montrade S.R.L. Procédé et dispositif d'alimentation en matériau de filtre pour une machine de formation de tige de filtre
ITBO20120413A1 (it) * 2012-07-30 2014-01-31 Montrade S R L Metodo e dispositivo per l'alimentazione di materiale filtrante ad una macchina confezionatrice di filtri
DE102014212974A1 (de) * 2014-07-03 2016-01-07 Hauni Maschinenbau Ag Vorrichtung und Verfahren zur Verarbeitung von mindestens zwei Towstreifen für die Herstellung von Filtern für stabförmige Rauchartikel
CN105899719A (zh) * 2014-01-08 2016-08-24 株式会社大赛璐 开纤体的制造方法及制造装置

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Publication number Priority date Publication date Assignee Title
JPS6013212U (ja) * 1983-07-05 1985-01-29 月島機械株式会社 プリコ−トフイルタ
DE102007057396A1 (de) * 2007-11-27 2009-05-28 Hauni Maschinenbau Ag Vorrichtung zur Bearbeitung von mindestens zwei Filtertowsträngen
JP5640090B2 (ja) * 2010-08-02 2014-12-10 日本たばこ産業株式会社 フィルタ製造装置、フィルタ製造方法、およびフィルタ
CN115530419B (zh) * 2022-10-12 2024-06-25 湖北中烟工业有限责任公司 一种甘油喷洒装置以及滤嘴成型机

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US2684614A (en) * 1951-03-16 1954-07-27 Molins Machine Co Ltd Manufacture of plugs for cigarettes
US3128680A (en) * 1960-03-15 1964-04-14 Philip Morris Inc Method of forming cigarette filter
US3299895A (en) * 1962-03-08 1967-01-24 American Mach & Foundry Cigarette or cigar making machine and method
US3371000A (en) * 1963-06-27 1968-02-27 Cigarette Components Ltd Method and apparatus for making integral multiple tobacco smoke filters
US3482488A (en) * 1968-01-12 1969-12-09 Brown & Williamson Tobacco Multiple filter manufacture
US3743528A (en) * 1971-07-08 1973-07-03 Liggett & Myers Inc Method and apparatus for impregnating fibrous filter material
US3807286A (en) * 1972-10-04 1974-04-30 Brown & Williamson Tobacco Multiple filter having a loose granule section with perforated inner wrapper

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684614A (en) * 1951-03-16 1954-07-27 Molins Machine Co Ltd Manufacture of plugs for cigarettes
US3128680A (en) * 1960-03-15 1964-04-14 Philip Morris Inc Method of forming cigarette filter
US3299895A (en) * 1962-03-08 1967-01-24 American Mach & Foundry Cigarette or cigar making machine and method
US3371000A (en) * 1963-06-27 1968-02-27 Cigarette Components Ltd Method and apparatus for making integral multiple tobacco smoke filters
US3482488A (en) * 1968-01-12 1969-12-09 Brown & Williamson Tobacco Multiple filter manufacture
US3743528A (en) * 1971-07-08 1973-07-03 Liggett & Myers Inc Method and apparatus for impregnating fibrous filter material
US3807286A (en) * 1972-10-04 1974-04-30 Brown & Williamson Tobacco Multiple filter having a loose granule section with perforated inner wrapper

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214508A (en) * 1977-10-13 1980-07-29 Philip Morris Incorporated Method and apparatus for making cigarette filters of filamentary material
US4281671A (en) * 1978-04-21 1981-08-04 American Filtrona Corporation Production of tobacco smoke filters
EP0014477A1 (fr) * 1979-02-12 1980-08-20 Philip Morris Incorporated Procédé et appareil pour former une tige de filtre contenant un matériau particulaire, notamment une tige de filtre imprégnée de charbon de bois
FR2487644A1 (fr) * 1980-08-04 1982-02-05 Molins Ltd
US4593706A (en) * 1980-08-04 1986-06-10 Molins Limited Producing filler material, particularly for cigarette filters
US4528050A (en) * 1981-07-30 1985-07-09 Molins Plc Producing filler material, particularly for cigarette filters
US4861324A (en) * 1985-04-11 1989-08-29 Japan Tobacco Inc. Apparatus for manufacturing tobacco filter
US5025814A (en) * 1987-05-12 1991-06-25 R. J. Reynolds Tobacco Company Cigarette filters containing strands of tobacco-containing materials
US4862905A (en) * 1987-06-15 1989-09-05 R. J. Reynolds Tobacco Company Rods containing pelletized material
US5902431A (en) * 1997-06-04 1999-05-11 R. J. Reynolds Tobacco Company Composite web forming apparatus and method
EP0882412A3 (fr) * 1997-06-04 2000-05-31 Japan Tobacco Inc. Dispositif pour la fabrication d'une feuille composite et procédé
AU739883B2 (en) * 1997-06-04 2001-10-25 Japan Tobacco Inc. Composite web forming apparatus and method
US6576034B2 (en) * 1999-02-17 2003-06-10 Filtrona Richmond, Inc. Method and apparatus for spinning a web of mixed fibers, and products produced therefrom
EP1372416A2 (fr) 2001-03-27 2004-01-02 Hauni Maschinenbau AG Procede et dispositif de fabrication d'un filtre et filtre correspondant
US6837281B2 (en) 2001-08-17 2005-01-04 Philip Morris Incorporation Apparatus and method for filling cavities with metered amounts of granular particles
US20060196513A1 (en) * 2004-12-30 2006-09-07 Philip Morris Usa Inc. Triple hopper max with built-in granulated cavity filling capability
US20120080043A1 (en) * 2009-04-09 2012-04-05 Rene Naenen Introducing Objects Into Elongate Smoking Articles
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CN104302196A (zh) * 2012-03-05 2015-01-21 蒙特拉德有限公司 用于向滤嘴棒成型机供应过滤材料的方法和装置
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CN105899719A (zh) * 2014-01-08 2016-08-24 株式会社大赛璐 开纤体的制造方法及制造装置
EP3093381A4 (fr) * 2014-01-08 2017-01-18 Daicel Corporation Procédé de fabrication et dispositif de fabrication de matériau en fibres étalées
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DE2504134A1 (de) 1975-08-07
AU7743975A (en) 1976-07-22
BR7500667A (pt) 1975-11-11
JPS5145680B2 (fr) 1976-12-04
DK146814B (da) 1984-01-16
FI58861B (fi) 1981-01-30
JPS50111297A (fr) 1975-09-01
DE2504134B2 (de) 1977-06-08
FI58861C (fi) 1981-05-11
BE825161A (fr) 1975-05-29
DK146814C (da) 1984-06-25
DK35875A (fr) 1975-10-13
CA1013227A (en) 1977-07-05
ZA75659B (en) 1976-01-28
NL7501056A (nl) 1975-08-06
GB1448964A (en) 1976-09-08
CH588220A5 (fr) 1977-05-31
FI750273A (fr) 1975-08-05

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