US3804695A - Apparatus for making tobacco smoke filters - Google Patents

Apparatus for making tobacco smoke filters Download PDF

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Publication number
US3804695A
US3804695A US00128117A US12811771A US3804695A US 3804695 A US3804695 A US 3804695A US 00128117 A US00128117 A US 00128117A US 12811771 A US12811771 A US 12811771A US 3804695 A US3804695 A US 3804695A
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United States
Prior art keywords
tow
filter
filters
rolls
web
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Expired - Lifetime
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US00128117A
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English (en)
Inventor
J Randall
C Keith
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Celanese Corp
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Celanese Corp
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Filing date
Publication date
Priority to GB1264894D priority Critical patent/GB1264894A/en
Priority to LU58869D priority patent/LU58869A1/xx
Priority to DE1930435A priority patent/DE1930435C3/de
Priority to CH917069A priority patent/CH518684A/fr
Priority to BE734608D priority patent/BE734608A/xx
Priority to NL6909132A priority patent/NL6909132A/xx
Priority to FR6920208A priority patent/FR2011118A1/fr
Priority to AT573069A priority patent/AT296121B/de
Application filed by Celanese Corp filed Critical Celanese Corp
Priority to US00128117A priority patent/US3804695A/en
Priority to CA126,148A priority patent/CA944648A/en
Application granted granted Critical
Publication of US3804695A publication Critical patent/US3804695A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
    • 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
    • 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
    • Y10T156/1023—Surface deformation only [e.g., embossing]

Definitions

  • the primary object ef the present invention is to provide an aerosol .filterQparticularly a cigarette filter, which will exhibit a: smoke removal efficiency to pressure drop 'relationship up to and even exceeding that normally associated with paper filters, without exhibiting the above ufidesirableproperties ordinarily associated with such aerosol filtersj
  • Another object isto provide an intermediate product suitablefor formationinto filters of the above characteristics.
  • FIG. 1 is a diagrammatic view of an apparatus suitable forthe practice of the present invention.
  • FIGS. 2, 3, 4and 5 are illustrations of patterned surfaces which be suitablyemployed in the present invention.
  • FIG. ,6 is a l5 magnification of the preferred intermediate product of "the present invention.
  • a tow 12 of continuous cellulose acetate filaments preferably having about five to about 15 transverse crimps per inch, and acetyl value of 38-41 percent, a regular or a non-circular, e.g., 1,.X, orjY cross section, and a total denier of about 45,000 to about 120,000 or more is removed from tow bale l0 and passed over guide means 14 to opener 16.
  • the purpose of opener 16 is to cause deregistration of the crimps of the individual filaments, and thus provide a tow having improved uniformity and bulkiness.
  • opener 16 is a threaded roll opener of the type generally described in U.S. Pat. No. 3,032,829 to Mahoney, et al., and 3,156,016 to Dunlap, et al.
  • thethreaded roll opener shown comprises two pairs of rolls, with at least one roll of one pair being driven.
  • at least one roll of each pair has a patterned surface preferably composed of circumferential or helical grooves.
  • the roll pairs may be different, e.g., only one roll of one pair need be grooved.
  • individual filaments of the tow are differentially restrained causing a longitudinal shifting of the relative location of the crimps of the individual filaments.
  • other openers for example, those producing deregistration by air turbulence or flexing of the tow, may also be suitably employed.
  • tow 12 After passing through opener l6, tow 12 is commonly passed through a banding jet 16 which spreads the tow by application of one or more air streams into a flat band of about three to eight times its original width and causes further separation of the individual filaments.
  • a suitable banding jet is shown, for example, in U.S. Pat. No. 3,226,773.
  • other means for achieving filament separation such as equipment utilizing electrostatic forces are known in the art and may also be used for this purpose.
  • plasticizer applicator 20 treats the surface of the individual filaments with a plasticizing liquid, preferably an organic ester such as triacetin, to cause bonding of the filaments.
  • plasticizing liquid preferably an organic ester such as triacetin
  • suitable plasticizers include, for example, triethyl citrate, dimethyl ethyl phthalate, or the dimethyl ether of triethylene or tetraethylene glycol.
  • plasticizer applicator 20 is a centrifugal plasticizer applicator of the type described in U.S. application Ser. No. 555,647, filed June 2, 1966, now US. Pat. No. 3,387,992.
  • applicator 20 comprises a housing, a rotating disc located within the housing below the path of the tow and substantially transverse thereto, means for applying a plasticizer to the rotatable disc, and means for recycling plasticizer which does not remain on thetow.
  • Other applicators which are adapted to apply plasticizer to a-continuous web may also be used for this purpose. For example,
  • Such applicators may utilize wicks or spray nozzles in plasticizer application.
  • the tow may optionally be passed to heating means 22 and/or converging means 24.
  • heating means 22 is to raise the temperature of the thermoplastic web, thus rendering it more susceptible to bonding upon compression.
  • Heating means 22 may be used alone or in conjunction with a heating source within patterned rolls 26 later described.
  • Converging means 24 serves to reduce the width of the web, thus rendering the web more readily processable. More uniform distribution of plasticizer is also obtained by passing tow 12 through converging means 24.
  • tow 12 Downstream from plasticizer applicator 20, or heating means 22, and/or converging means 24, if employed tow 12 is passed to and through the nip of a pair of rolls 26, at least one of which has a patterned surface.
  • these patterned, e.g., grooved rolls 26 are adapted to afford a plurality of permanently depressed areas in the substrate.
  • Said rolls 26 are positioned substantially transverse to the tow path and are arranged with parallel axes. Ordinarily, one roll of the pair will be adjacent the upper surface of the tow path, while the second roll will be mounted opposite said roll and below the tow path. However, the web may also follow a vertical path with a patterned roll mounted of either side of such path.
  • the rolls 26 may be mounted yieldably in contact or slightly separated.
  • the rolls should be of a proximity, however, sufficient to cause at least some permanent depression of the tow as it passes therebetween.
  • the separation of the rolls is from to about 0.02 inches, and even more desirably from 0 to about 0.01 inches.
  • the separation will depend upon a thickness of the tow as determined by the total denier and width thereof. Webs processed through rolls of the above separation will have an overall thickness of from about 0.1 to about 2.5mm.
  • a variety of patterns may be imparted to the surface of the web material.
  • Such patterns may comprise continuous depressed areas and/or continuous lands.
  • a waffle or quilted surface as illustrated in FIG. 2 may be imparted to the surface of the web.
  • either the continuous or discontinuous area may be compressed.
  • the waffle or quilted pattern may also be oriented so that the edges of the pattern are at an angle to the longitudinal axis of the web, in effect imparting a diamond-shaped pattern as shown in FIG. 3 to the surface of the web.
  • the preferred patterns of the present invention from the standpoint of the greatest relative reduction in pressure drop comprise grooves defining a path substantially paralle to the longitudinal axis of the web.
  • These longitudinal grooves preferably form a straight line along the web, i.e., accordian pleats; sinusoidal or zigzag grooves (as shown in FIGS. 4 and 5) are also possible, however.
  • the preferred rolls employed in the present invention are circumferentially or helically grooved, and will have from about five to about 80 and preferably from about to about 45 grooves per inch.
  • the lands of the rolls will ordinarily be of about 0.03 to about 0.005 inch and more preferably from about 0.0l5 to about 0.008 inch in width.
  • the grooves will ordinarily be about 0.035 to about 0.005 and preferably from about 0.002 to about 0.001 inch in depth.
  • the lands of a given roll will ordinarily, but not necessarily, be of uniform width. In fact, lands which progressively decrease in width outwardly from the center of the patterned area may aid in the construction of a more uni form filter.
  • the depths of the grooves may be of differential dimensions across the web.
  • Rod firmness can be improved by using rectangular or substantially rectangular grooves, since such grooves tend to yield a material which, upon gathering into rod form, has self-supporting, triangular-shaped, difficulty compressible channels.
  • substantially rectangular grooves is intended to define a groove wherein the angle from the vertical of the wall is from 0 to 45 and preferably from 0 to 30. It is, of course, within the scope of the present invention to use other grooved shapes, e.g., semi-circular, trapezoidal, or triangular grooves.
  • patterned rolls having an internal heat source are employed.
  • electrical means is used to heat the patterned rolls.
  • Roll temperatures are generally from about 25 to about 225C, with 1l0 to about C being preferred.
  • Such treatment may be utilized to reduce the cross sectional dimension of the substrate material or to impart enhanced processability thereto, but conditions are adapted to ensure substantial retention of filamentary character.
  • corrugating rolls 26 are at least about 2 inches in diameter and even more preferably from about 4 to about 8 inches in diameter.
  • the dimensions of the patterned portion of the rolls will, of course, be determined to some extent by the width of the tow being structured. Generally, a total patterned width of from about 8 to about l6 is sufficient for most operations.
  • advantageous results may be obtained by applying a heated plasticizer to the tow.
  • desirable results may be obtained by treating the tow with solvation agents such as acetone, methylene chloride or water prior to structuring.
  • the patterned web is then passed over forming means 28 which in essence constitutes a curved or other shaped surface which tends to reduce the overall width of the web and produce a more uniform ultimate product.
  • the tow may then be directed into a rod maker 30, which shapes the patterned web into a filter rod.
  • the rod issuing from the rod maker will ordinarily be of about 8 mm. in diameter, and will be severed into lengths of about 60-180 mm., a length sufficient to yield 6 filter rods of 10-30 mm. each when ultimately severed for attachment to tobacco sections.
  • the present patterned webs are particularly adapted for use in cigarette filter form, they may also be advantageously employed in other filter forms, such as air conditioning or industrial gas filters. Also, the patterned webs may be suitably utilized as interliners and the like where a light weight coherent structure is desired.
  • filtration properties improve in proportion to the reduction in denier per filament. That is to say, a reduction in denier per filament increases the surface area of the filamentary material, and thus improves filtration properties.
  • the preferred denier per filament range in the present invention is from about 0.1 to about 5, with a denier per filament below about 3 being especially preferred.
  • Products may be prepared from fibers having a denier per filament up to 16, however.
  • Tip weight is a function of the total denier of the tow being employed in preparing the filter.
  • the. tows employed in the present invention will have a total denier of from about 35,000 to about 200,000 or higher and preferably from about 60,000 to about 120,000.
  • Filters of standard dimension, i.e., 20mm. in lengthand 8mm. in diameter, prepared from tows of this total denier will generally have a weight of from about 0.14 gram to about 0.34 gram and when the preferred total denier is employed, a weight of from about 0.19 gram to about 032 gram.
  • Sheet density is also a significant factor to be considered in maximizing the filtration properties of the present corrugated filter. While higher densities permit the inclusion into the filter of greater weights of material at a given pressuredrop, this advantage is offset some what by a reduction in total available surface area due to packing at these higher densities. Considering these factors, a sheet density of from about 25 to about 175 g/m is generally employed, with a density of from about 50 to about 125 g/m being preferred. Sheet density is used herein in the sense employed in the paper art and is a measurement of the weight of a portion of a sheet defined by the area of the surface.
  • Corrugation frequency that is the number of separate or land areas per square inch of material, also influences the S.R.E. of the filter. Generally, a frequency of about five to 80 is employed. The particular pattern erflpiayea is, of cour se, a considefati onifidetermining the optimum frequency. For the preferred longitudinal grooves of the present invention, the corrugation frequency will correspond to the specifications previously given for preferred rolls. I
  • EXAMPLES 1-6 A crimped tow of continuous acetate filaments, 3.3 denier per filament, Y cross section, 48,000 total denier, was removed from a tow bale and opened on a threaded roll opener, described above. A sample of this opened tow comprised of approximately a 3 foot length was placed on a table where it was plasticized with triacetin sprayed from a hand held atomizer to a plasticizer level of approximately 7 percent by weight. The plasticized tow sample was folded to produce a tow band with a sheet density of approximately 58 grams per square meter.
  • the band was corrugated by pressing briefly between two heated, grooved plates, 3% X 7 inches which had 10 grooves per inch; the grooves being 0.060 inches wide and 0.060 inches deep.
  • the resulting corrugated sheet was gathered into a rod, wrapped with a conventional filter paper wrap, and cut to 20mm. length.
  • the resulting 20mm. tips weighed 0.197 gram and had a pressure drop of 68mm. 11 0 measured by drawing air through the tip at an air fiow rate of 18 cc/sec.
  • the filter tips removed 51.9 percent of the smoke particulate matter.
  • Other tips were prepared in a similar manner.
  • the results obtained and comparative data obtained using conventional cellulose acetate tips of comparable pressure drop are shown in the following table.
  • A. TIP SAMPLE EXAMPLE 7 A crimped tow of continuous cellulose acetate filaments, 2.3 denier per filament, Y cross section, 99,000 total denier, was withdrawn from a tow bale and continuously processed on a modified threaded roll processing system. The threaded roll opened tow was passed through a banding jet and passed through a continuous plasticizer application system. The plasticized tow was passed through a driven feed nip and supplied to the nip of a pair of corrugating rolls.
  • the plasticized tow was converted from a loose band of continuous substantially longitudinally aligned fibers substantially free of interfiber bonding to a coherent corrugated sheet by compressing the tow in the nip of a pair of corrugating rolls.
  • the rolls were 4 inches in diameter by 16 inches long and had 30 grooves/inch 0.0152 inches wide by 0.0l65 inches deep with a 30 included angle.
  • the rolls were heated with a surface temperature of l30 and were operated under a pressure of 100 pounds per inch of tow band width in the nip.
  • the continuously corrugated sheet having a density of 75 g/m was fed through a convergence guide to the garniture of a conventional cigarette filter rod maker and rods were prepared.
  • Rods 20mm. in length and 8mm. in diameter weighed 0.257 gram, had a pressure drop of 67mm. H 0, and an S.R.E. of 57.9.
  • a conventional tip of comparable pressure drop had an S.R.E. of 49.9.
  • Filters prepared by the above method may be used as the sole filtration means on a cigarette. It is, of course, possible to use filters prepared by the present invention as part of a dual or segmented filter. In this context, the present filters are particularly suitable in combination with paper filters and conventional cellulose acetate filters.
  • filters may also be prepared by imparting a pattern to the surface of webs of other thermoplastic materials prior to corrugation.
  • spray spun polyolefin webs prepared, for example, in accordance with the teachings of commonly assigned application Ser. No. 581,075, filed Sept. 20, 1966 and now abandoned, may also be corrugated in the presently described manner to yield products which may be formed into improved filters.
  • Webs of discontinuous fibers substantially free of interfiber bonding prior to corrugation, e.g., a carded staple roving, are also suitably treated by the present invention.
  • Suitable thermoplastic materials envisaged for conversion into filters in accordance with this invention include the cellulose esters, including the triesters, with organic carboxylic acid having two to four carbon atoms, the polyesters such as polyethylene terephthalate, the polyamides such as nylon 6 and 66, the acrylics and especially those having an acrylonitrile content of at least percent, the polyolefins such as polypropylene, polyethylene, poly 3 methyl butene or poly 4 methyl pentene.
  • the smoke removal efficiency of a filter at a given pressure drop is directly proportional to the surface area of the filtration material present within the filter.
  • a conventional 20mm. cellulose acetate filter having an acceptable pressure drop i.e., mm. H O or less, comprises material having a total surface area of below 500 cm.
  • a filter prepared in accordance with the present disclosure contains sufficient material to present a surface area of 550 to 1,000 cm within the acceptable pressure drop range of 20 to 90mm. H O.
  • surface areas within the range of 750-l ,000 cm, or up to about l50-200 percent that is obtainable in a conventional filter are produced.
  • paper filters are conventionally longitudinaly corrugated and that the prior art contains many teachings of this fact. It is significant, however, that such corrugation in the paper filter art has been employed for the purpose of obtaining structural rigidity of the filter. In the filtration art, both in paper technology and in filament technology, it has been felt that channeling within the filter was a most undesirable factor, since such channeling permitted the smoke to flow along an unrestricted path without being subjected to the resistance of the filter. Of course, longitudinal corrugation effectively creates a multitude of channels for the smoke.
  • An apparatus for converting a tow of crimped continuous synthetic filaments into improved tobacco smoke filter rods comprising in sequence: v
  • a. deregistering means for longitudinally shifting the individual filaments of said tow relative to adjacent filaments
  • plasticizing means for applying a plasticizer to the surface of said tow
  • patterning means for imparting a patterned configuration to at least one surface of said tow, said patterning means being comprised of a pair of parallel rolls in pressure engagement defining a nip therebetween, atleast one roll having a circumferential pair of rolls have circumferentially or helically grooved surfaces.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US00128117A 1968-06-17 1971-03-25 Apparatus for making tobacco smoke filters Expired - Lifetime US3804695A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB1264894D GB1264894A (it) 1968-06-17 1969-05-29
LU58869D LU58869A1 (it) 1968-06-17 1969-06-13
DE1930435A DE1930435C3 (de) 1968-06-17 1969-06-14 Verfahren und Vorrichtung zum Her stellen eines Filterstabes für Zigaretten oder dergleichen
BE734608D BE734608A (it) 1968-06-17 1969-06-16
CH917069A CH518684A (fr) 1968-06-17 1969-06-16 Procédé pour préparer une matière destinée à être façonnée en un filtre pour aérosols
NL6909132A NL6909132A (it) 1968-06-17 1969-06-16
FR6920208A FR2011118A1 (it) 1968-06-17 1969-06-17
AT573069A AT296121B (de) 1968-06-17 1969-06-17 Verfahren und Vorrichtung zur Herstellung einer insbesondere für Zigarettenfilter geeigneten Faserbahn
US00128117A US3804695A (en) 1968-06-17 1971-03-25 Apparatus for making tobacco smoke filters
CA126,148A CA944648A (en) 1968-06-17 1971-10-26 Filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73751968A 1968-06-17 1968-06-17
US00128117A US3804695A (en) 1968-06-17 1971-03-25 Apparatus for making tobacco smoke filters

Publications (1)

Publication Number Publication Date
US3804695A true US3804695A (en) 1974-04-16

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Application Number Title Priority Date Filing Date
US00128117A Expired - Lifetime US3804695A (en) 1968-06-17 1971-03-25 Apparatus for making tobacco smoke filters

Country Status (10)

Country Link
US (1) US3804695A (it)
AT (1) AT296121B (it)
BE (1) BE734608A (it)
CA (1) CA944648A (it)
CH (1) CH518684A (it)
DE (1) DE1930435C3 (it)
FR (1) FR2011118A1 (it)
GB (1) GB1264894A (it)
LU (1) LU58869A1 (it)
NL (1) NL6909132A (it)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003684A (en) * 1971-05-13 1977-01-18 Celfil Company Establishment Apparatus for treating webs of filtering material for tobacco product filters, particularly cigarette filters
FR2452257A1 (fr) * 1979-03-27 1980-10-24 Cigarette Components Ltd Filtres de fumee et leur procede de fabrication
DE3121499A1 (de) * 1980-07-11 1982-03-25 Brown & Williamson Tobacco Corp., 40232 Louisville, Ky. Vorrichtung zum formen von rillen in tabakrauchfiltern
US4351792A (en) * 1980-07-11 1982-09-28 Brown & Williamson Tobacco Corporation Apparatus for making grooves in tobacco smoke filters
US4354889A (en) * 1979-03-05 1982-10-19 American Filtrona Corporation Ink reservoir element for use in a marking instrument, and method and apparatus for producing same
US4355995A (en) * 1979-03-27 1982-10-26 American Filtrona Corporation Tobacco smoke filter providing tobacco flavor enrichment, and method for producing same
US4357188A (en) * 1979-10-22 1982-11-02 Mitsubishi Rayon Co., Ltd. Method for manufacturing cigarette filters
DE3401954A1 (de) * 1983-02-07 1984-08-09 Brown & Williamson Tobacco Corp., Louisville, Ky. Vorrichtung zum erzeugen von rillen in zigarettenfiltern
US4492238A (en) 1981-09-30 1985-01-08 Philip Morris Incorporated Method and apparatus for production of smoke filter components
US4632514A (en) * 1984-01-31 1986-12-30 Matsushita Electric Industrial Co., Ltd. Color liquid crystal display apparatus
US4883449A (en) * 1984-07-18 1989-11-28 Brown & Williamson Tobacco Corporation Device for making grooves in cigarette filters
US5185052A (en) * 1990-06-06 1993-02-09 The Procter & Gamble Company High speed pleating apparatus
MD24C2 (ro) * 1991-07-09 1994-05-31 Fabrica De Parfumerii Si Cosmetica "Viorica" Compoziţie de substanţe odorante
MD6C2 (ro) * 1980-07-11 1994-08-31 Brown & Williamson Tobacco Corporation Dispozitiv pentru executarea adânciturilor debleu în miezurile filtrante
US5732718A (en) * 1994-08-23 1998-03-31 Schweitzer-Mauduit International, Inc. Selective filtration device
US5814390A (en) * 1995-06-30 1998-09-29 Kimberly-Clark Worldwide, Inc. Creased nonwoven web with stretch and recovery
CN101061264B (zh) * 2004-11-22 2010-12-08 三菱丽阳株式会社 丝束带的制造方法及丝束带的制造装置
US20140364290A1 (en) * 2011-12-30 2014-12-11 Philip Morris Products S.A. Apparatus and method for supplying a continuous web of crimped sheet material
CN104856222A (zh) * 2015-04-27 2015-08-26 云南图赛科技有限公司 减少二醋酸纤维丝用量的滤棒成型方法
CN110418579A (zh) * 2017-04-12 2019-11-05 菲利普莫里斯生产公司 用于薄片状烟草材料的生产的设备和方法
EP3643185A4 (en) * 2017-06-19 2021-05-26 Japan Tobacco, Inc. SMOKE ARTICLE FILTERS AND MANUFACTURING METHOD FOR THEREFORE
CN113907416A (zh) * 2021-11-11 2022-01-11 南通烟滤嘴有限责任公司 一种多轴多芯滤棒的制备装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1522280A (en) * 1976-06-01 1978-08-23 Hollingsworth & Vose Co Filter medium and method of making same
DE19951062C2 (de) * 1999-10-22 2002-04-04 Rhodia Acetow Gmbh Hochleistungs-Zigarettenfilter
GB2380391A (en) * 2001-10-03 2003-04-09 Filtrona Int Ltd Cigarette filter containing differently coloured filaments

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US3079663A (en) * 1958-05-21 1963-03-05 Eastman Kodak Co Method and apparatus for producing tobacco smoke filters
US3156016A (en) * 1961-11-13 1964-11-10 Celanese Corp Tow opening
US3180911A (en) * 1959-09-22 1965-04-27 Muller Paul Adolf Method of making cigarette filter plugs of fibrous material containing thermoplastic fibers
US3224453A (en) * 1959-06-12 1965-12-21 Celanese Corp Filter cigarettes
US3226773A (en) * 1960-09-26 1966-01-04 Celanese Corp Method and apparatus for opening and applying finishes to multifilament tows
US3255506A (en) * 1963-02-20 1966-06-14 Eastman Kodak Co Tow treatment
US3411942A (en) * 1964-12-21 1968-11-19 Eastman Kodak Co Method of applying liquid addendum to opposite surfaces of a continuous multifilament tow

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US3079663A (en) * 1958-05-21 1963-03-05 Eastman Kodak Co Method and apparatus for producing tobacco smoke filters
US3224453A (en) * 1959-06-12 1965-12-21 Celanese Corp Filter cigarettes
US3180911A (en) * 1959-09-22 1965-04-27 Muller Paul Adolf Method of making cigarette filter plugs of fibrous material containing thermoplastic fibers
US3226773A (en) * 1960-09-26 1966-01-04 Celanese Corp Method and apparatus for opening and applying finishes to multifilament tows
US3156016A (en) * 1961-11-13 1964-11-10 Celanese Corp Tow opening
US3255506A (en) * 1963-02-20 1966-06-14 Eastman Kodak Co Tow treatment
US3411942A (en) * 1964-12-21 1968-11-19 Eastman Kodak Co Method of applying liquid addendum to opposite surfaces of a continuous multifilament tow

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003684A (en) * 1971-05-13 1977-01-18 Celfil Company Establishment Apparatus for treating webs of filtering material for tobacco product filters, particularly cigarette filters
US4354889A (en) * 1979-03-05 1982-10-19 American Filtrona Corporation Ink reservoir element for use in a marking instrument, and method and apparatus for producing same
FR2452257A1 (fr) * 1979-03-27 1980-10-24 Cigarette Components Ltd Filtres de fumee et leur procede de fabrication
US4291711A (en) * 1979-03-27 1981-09-29 American Filtrona Corporation Tobacco smoke filter providing tobacco flavor enrichment, and method for producing same
US4355995A (en) * 1979-03-27 1982-10-26 American Filtrona Corporation Tobacco smoke filter providing tobacco flavor enrichment, and method for producing same
US4357188A (en) * 1979-10-22 1982-11-02 Mitsubishi Rayon Co., Ltd. Method for manufacturing cigarette filters
DE3121499A1 (de) * 1980-07-11 1982-03-25 Brown & Williamson Tobacco Corp., 40232 Louisville, Ky. Vorrichtung zum formen von rillen in tabakrauchfiltern
US4351792A (en) * 1980-07-11 1982-09-28 Brown & Williamson Tobacco Corporation Apparatus for making grooves in tobacco smoke filters
US4324540A (en) * 1980-07-11 1982-04-13 Brown & Williamson Tobacco Corporation Apparatus for making grooves in tobacco smoke filters
MD6C2 (ro) * 1980-07-11 1994-08-31 Brown & Williamson Tobacco Corporation Dispozitiv pentru executarea adânciturilor debleu în miezurile filtrante
US4492238A (en) 1981-09-30 1985-01-08 Philip Morris Incorporated Method and apparatus for production of smoke filter components
DE3401954A1 (de) * 1983-02-07 1984-08-09 Brown & Williamson Tobacco Corp., Louisville, Ky. Vorrichtung zum erzeugen von rillen in zigarettenfiltern
US4480982A (en) * 1983-02-07 1984-11-06 Brown & Williamson Tobacco Corporation Apparatus for making grooves in cigarette filters
US4632514A (en) * 1984-01-31 1986-12-30 Matsushita Electric Industrial Co., Ltd. Color liquid crystal display apparatus
US4883449A (en) * 1984-07-18 1989-11-28 Brown & Williamson Tobacco Corporation Device for making grooves in cigarette filters
US5185052A (en) * 1990-06-06 1993-02-09 The Procter & Gamble Company High speed pleating apparatus
MD24C2 (ro) * 1991-07-09 1994-05-31 Fabrica De Parfumerii Si Cosmetica "Viorica" Compoziţie de substanţe odorante
US5732718A (en) * 1994-08-23 1998-03-31 Schweitzer-Mauduit International, Inc. Selective filtration device
US5814390A (en) * 1995-06-30 1998-09-29 Kimberly-Clark Worldwide, Inc. Creased nonwoven web with stretch and recovery
CN101061264B (zh) * 2004-11-22 2010-12-08 三菱丽阳株式会社 丝束带的制造方法及丝束带的制造装置
US20140364290A1 (en) * 2011-12-30 2014-12-11 Philip Morris Products S.A. Apparatus and method for supplying a continuous web of crimped sheet material
CN104856222A (zh) * 2015-04-27 2015-08-26 云南图赛科技有限公司 减少二醋酸纤维丝用量的滤棒成型方法
CN110418579A (zh) * 2017-04-12 2019-11-05 菲利普莫里斯生产公司 用于薄片状烟草材料的生产的设备和方法
US20220151287A1 (en) * 2017-04-12 2022-05-19 Philip Morris Products S.A. Apparatus and method for the production of sheet like tobacco material
US12016376B2 (en) * 2017-04-12 2024-06-25 Philip Morris Products S.A. Apparatus and method for the production of sheet like tobacco material
EP3643185A4 (en) * 2017-06-19 2021-05-26 Japan Tobacco, Inc. SMOKE ARTICLE FILTERS AND MANUFACTURING METHOD FOR THEREFORE
CN113907416A (zh) * 2021-11-11 2022-01-11 南通烟滤嘴有限责任公司 一种多轴多芯滤棒的制备装置

Also Published As

Publication number Publication date
GB1264894A (it) 1972-02-23
CA944648A (en) 1974-04-02
DE1930435A1 (de) 1969-12-18
BE734608A (it) 1969-12-16
DE1930435C3 (de) 1973-09-20
FR2011118A1 (it) 1970-02-27
AT296121B (de) 1972-01-25
CH518684A (fr) 1972-02-15
DE1930435B2 (de) 1973-02-22
LU58869A1 (it) 1969-11-11
NL6909132A (it) 1969-12-19

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