US3625118A - Manufacture of filters for cigarettes or like smoking articles - Google Patents

Manufacture of filters for cigarettes or like smoking articles Download PDF

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Publication number
US3625118A
US3625118A US797435A US3625118DA US3625118A US 3625118 A US3625118 A US 3625118A US 797435 A US797435 A US 797435A US 3625118D A US3625118D A US 3625118DA US 3625118 A US3625118 A US 3625118A
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US
United States
Prior art keywords
stubs
plugs
strip
trough
particulate material
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
US797435A
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English (en)
Inventor
Norman Walter Jackson
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.)
Molins Machine Co Ltd
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Molins Machine Co Ltd
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Filing date
Publication date
Application filed by Molins Machine Co Ltd filed Critical Molins Machine Co Ltd
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Publication of US3625118A publication Critical patent/US3625118A/en
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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

  • PATENTEDBEE Hen 35251118 SHEET 1 BF 3 l I L FE k5 PATENTEDDEB Hen 3.625118 774W, wM/Q/MA PATENTEUUEC 719?: 3625118 SHEET 3 [IF 3 WWW MANUFACTURE OF FILTERS FOR CIGARET'IES OR LIKE SMOKING ARTICLES This application is a continuation-in-part of my copending application Ser. No. 753,532 filed Aug. 19, 1968, now abandoned.
  • This invention concerns improvements in or relating to the manufacture of filters for cigarettes, or similar smokable articles, and is particularly concerned with the production of filters incorporating a particulate filtering material.
  • the present invention is also concerned with a similar problem and with an improved method of manufacture which is directed towards overcoming this.
  • particulate materials for filtering smoke to remove undesired substances therefrom.
  • Such materials are incorporated in the filter of a cigarette, generally in a compartment between two plugs of a conventional nature of porous filtering material.
  • the particulate material should be packed into the space between the plugs in such a way that smoke drawn through the filter has to pass through the material, that is to say it is necessary that the material shall fill the compartment within the filter between the plugs and not leave empty spaces along which the smoke can bypass the filtering material.
  • a continuous web of wrapping paper is formed into a bowed cross section, plugs of porous filtering material are arranged at spaced intervals along the so-formed web, portions of particulate material are inserted in spaces between the plugs and the wrapping paper is folded and sealed around the plugs and material to form a continuous rod which is then cut into lengths as required, through the plugs.
  • difficulty arises in introducing sufficient particulate material into the spaces between the plugs to ensure that there is no undesirable bypassing in the subsequent filter, without at the same time getting the material in places where it is not wanted, such as between the plugs and the wrapping paper.
  • a method of manufacturing filters for cigarettes and similar smokable articles which comprises continuously forming a continuous web of wrapping material into a trough extending along the web, arranging plugs of filtering material at spaced intervals along the trough, deforming the wrapping web together with the plugs arranged therein so as to adapt the cross-sectional shape thereof to define in the spaces between the ends of plugs a particulate material receiving space which is greater than in the undeformed state, delivering particulate material into the said receiving spaces between the plugs, and closing the wrapping around the plugs and filtering material to produce a continuous filter rod of substantially circular cross section. This rod can then be cut to length as desired, through the filter plugs.
  • the plugs are deformed by flattening their opposed sides. Additionally they can be deformed by flattening their lower peripheries along the bottom of the trough so as to give them on three sides a generally rectangular cross section. Deformation may be carried out by means of guides which are shaped to define a path for the web and have a cross-sectional shape along that path which is progressively adapted to conform to the required cross-sectional shape of the filter rod and its component parts in their various stages of assemblage.
  • the filter plugs can be chosen to have a larger cross-sectional size and a lower density than is required in the final filter and can be compressed during manufacture, preferably by the action of the guides.
  • the invention also extends to filter plugs and cigarettes manufactured according to the above described method; to apparatus for carrying out the method; and to a process of manufacturing filter tip cigarettes incorporating the method.
  • FIG. 1 is a cross-sectional view, in elevation of a part of an apparatus for manufacturing cigarette filters
  • FIGS. 2 to 5, 7 and 8 are sections along the lines IIlI to V, VII-VII and VIII-VIII respectively of FIG. I.
  • FIG. 6 is a partial cross section taken along the line VIVI of FIG. 1.
  • the apparatus shown which is generally similar to a part of that disclosed in U.S. Ser. No. 470,512 (now abandoned) comprises a gamiture in which a gamiture tape 1 carries a web of wrapping paper 2 through a succession of guides and under a granule inserter wheel 3.
  • the gamiture web 1 comprises an endless band which is flexible across its width and which runs through a gamiture bed 4 having a shape which progressively changes along its length in the manner shown in FIGS. 2 to 8.
  • filter plugs 8 which are double the length required in the cigarettes are introduced under a guide 9 by means of an endless band 10.
  • the filter plugs 8 are larger in cross section and less dense than is required so that they can finally be compressed to the size and density required in the cigarettes.
  • the granule inserter wheel 3 which is provided with a series of pockets 1] around its peripheral edge which serve to meter quantities of a granular filtering material 12 from a hopper situated above the wheel 3 and which is not shown, into the spaces between the plugs 8.
  • Guides 13 extend around the wheel 3 to contain the granular material.
  • a horizontal rotating disc 14 Downstream of the granule inserter wheel 3 there is disposed a horizontal rotating disc 14 which applies adhesive to an upstanding edge of the paper web 2 to enable it to be scaled down.
  • a further guide 15 supports the web 2 while the adhesive is being applied.
  • the plugs 8 are located in position by the conveyor band 10 whilst the guides 5 defonn the gamiture tape 1 and paper web 2 from the shape shown in FIG. 2 to that shown in FIG. 3 in which the plugs 8 have started to be compressed to have a somewhat flattened bottom and flattened sides. This reduces the width of the plugs to not less than their final diameter (i.e., after final compression to the required size) but does not reduce their height, and the flattened sides of the plugs make sealing contact with the paper web over a considerable proportion of this height. This is more clear from FIG.
  • the garniture tape 1 and the paper web 2 move under the guide 6 which continues the folding of the paper web 2 around the plugs and the filtering material and which acts to compress the plugs 2 down to their final cross-sectional size.
  • the initial size of the plugs 8 is 27 mm. in circumference and this is compressed to about 24.5 mm. The compression of different-sized plugs would be in proportion to their size.
  • an edge of the paper web 2 is left upstanding for gumming between the disc 14 and the guide 15 prior to being sealed down upon itself by the combined action of the guides 6 and 7 which further compress and shape the rod, which has now been formed, to have a circular cross section.
  • Subsequent apparatus which is not shown, cuts the continuous rod so formed through the center of every other plug to form a double length filter plug which is then combined with a tobacco rod at each of its ends and once again out to form two filter tip cigarettes.
  • the filter plugs are initially more or less of the desired final cross-sectional size and density, and compression is applied to deform them so as to increase the extent of the peripheral surface of the plug which is in sealing contact with the paper web, as described above and this compression is subsequently relieved to allow the plugs to return to their original shape and size. It is preferred, however, to use oversize, low-density plugs in the manner disclosed above which are thus in a compressed state in the final form, since this makes it possible to provide a greater volume between two plugs which can accommodate the granular material.
  • a method of manufacturing filters for cigarettes and similar smokable articles which comprises continuously forming a continuous web of wrapping material into a trough extending along the web, arranging plugs of filtering material at spaced intervals along the trough, deforming the wrapping web together with the plugs arranged therein by compressing opposed sides of the plugs so as to adapt the cross-sectional shape thereof to define in the spaces between the ends of plugs a particulate material receiving space which is greater than in the undeformed state, delivering particulate material into the said receiving spaces between the compressed plugs, and closing the wrapping around the compressed plugs and filtering material by further compressing the plugs and particulate material to produce a continuous filter rod of substantially circular cross section.
  • a method as claimed in claim 1 further comprising selecting each plug to be of initially longer diameter and less density, prior to its deformation, than is required in the final filter, and compressing each said plug during manufacture to the desired diameter and density.
  • a method as claimed in claim 3 further comprising simultaneously deforming and compressing the plug.
  • Apparatus for making filters for cigarettes and similar smokable articles which comprises means to continuously form a continuous web of wrapping material into a trough extending along the web and having upstanding sides, means to arrange plugs of filtering material at spaced intervals along the web, means to compress the upstanding sides of the wrapping web together with the sides of the plugs arranged therein so as to adapt the cross-sectional shape thereof to define in the spaces between the ends of the plugs a particulate-material receiving space which is greater than in the undeformed state, means to deliver particulate material into the receiving spaces between the compressed plugs, and means to close the wrapping around the compressed plugs and filtering material while further compressing the plugs and particulate material to produce a continuous filter rod of substantially circular cross section.
  • Apparatus as claimed in claim 5 in which the means to deform the web and plugs comprises a channel-shaped guide of progressively changing cross section.
  • a method of making cigarette filter rods containing smoke-permeable stubs and quantities of particulate material in alternation along the length of a rod comprising arranging on a wrapping strip at spaced intervals stubs which are of larger cross section and less density than required in the final product, folding the strip in conformity with the surfaces of the stubs into a trough shape, feeding particulate material into the trough-shaped strip and between the stubs, folding the trough-shaped strip into a tube about the stubs to enclose the particulate material, and compressing the stubs to a final circular shape of the desired cross-sectional size and density.
  • Apparatus for making cigarette filter rods containing smoke-permeable stubs and quantities of particulate material in alternation along the length of a rod which comprises means for arranging on a wrapping strip at spaced intervals stubs which are of a larger cross section and less density than required in the final product, means to conform the strip with the surfaces of the stubs into a trough shape and to compress each stub about a part of its circumference with the strip thereabout whereby a part of each stub is reduced to a predetermined cross-sectional size and density, means to feed particulate material into the trough-shaped wrapper strip and between the stubs, means to fold the trough-shaped strip into a tube about the stubs to enclose the particulate material and stubs and to compress the remaining part of the circumference of each stub with the strip thereabout whereby the predetermined reduction in the cross-sectional size and density of each stub is completed.
  • Apparatus according to claim 9 wherein the means to conform the strip into a trough shape and compress a part of each stub, to fold the trough-shaped strip into a tube and to compress the remaining part of each stub comprises a gamiture bed and a garniture tape to move the strip along the bed in a trough which is formed at one part to conform the tape with the trough-shaped wrapper strip and at another part to conform it with the rod to be made and which has a progressively changing form between those parts.
  • Apparatus according to claim 10 wherein the means to fold the trough-shaped strip into a tube is disposed to act on the strip as it moves from the one part to the other part of the garniture.
  • a method of making cigarette filter rods comprising assembling smoke-permeable stubs which are of larger cross section and less density than required in the final product and quantities of particulate material in alternation, folding a wrapper about said stubs and particulate material to form a tube, and compressing the stubs with the wrapper to a final shape of a predetermined cross-sectional size and density.
  • Apparatus for making cigarette filter rods containing smoke-permeable stubs and quantities of particulate material in alternation along the length of a rod comprising means for assembling said smoke-permeable stubs and quantities of particulate material in alternation on a wrapping strip and means for folding said wrapping strip about said stubs and particulate material to form a tube and simultaneously compressing the stubs with the wrapper thereabout to a final shape of a predetermined cross-sectional size and density.
  • a method of making cigarette filter rods containing smoke-permeable stubs and quantities of particulate material in alternation along the length of a rod comprising arranging on a wrapping strip at spaced intervals stubs which are of larger cross section and less density than required in the final product, conforming the strip with the surfaces of the stubs into a trough shape and simultaneously compressing each stub about a part of its circumference with the strip thereabout to reduce a part of each stub to a predetermined cross-sectional size and density, feeding particulate material into the trough-shaped strip and between the stubs, and folding the trough-shaped strip into a tube about the stubs to enclose the particulate material and simultaneously compressing the remaining part of the circumference of each stub with the strip thereabout to complete the predetermined reduction in the cross-sectional size and density of each stub.
  • the improvement wherein to increase the capacity of the said spaces to receive and contain particulate filtering material, the opposite sides of the trough-shaped web and of the plugs therebetween are compressed so as to increase the height to which the upstanding sides of the web are in contact with the corresponding sides of the plugs.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US797435A 1968-02-16 1969-02-07 Manufacture of filters for cigarettes or like smoking articles Expired - Lifetime US3625118A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB776768 1968-02-16

Publications (1)

Publication Number Publication Date
US3625118A true US3625118A (en) 1971-12-07

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ID=9839333

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US797435A Expired - Lifetime US3625118A (en) 1968-02-16 1969-02-07 Manufacture of filters for cigarettes or like smoking articles

Country Status (5)

Country Link
US (1) US3625118A (enrdf_load_stackoverflow)
CH (1) CH507668A (enrdf_load_stackoverflow)
DE (1) DE1907458C3 (enrdf_load_stackoverflow)
FR (1) FR2002013A1 (enrdf_load_stackoverflow)
GB (1) GB1231271A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844200A (en) * 1973-05-07 1974-10-29 Brown & Williamson Tobacco Continuous manufacture of a multiple filter rod having spaced pockets containing particulate material
US4285678A (en) * 1978-03-23 1981-08-25 Molins Limited Method and apparatus for making composite filter rod
US5322495A (en) * 1992-04-27 1994-06-21 Philip Morris Incorporated High speed vacuum assisted free flowing material inserter in filter rod manufacture
US5339871A (en) * 1993-05-04 1994-08-23 Philip Morris Incorporated Apparatus and methods for transferring and metering granular material
US5875824A (en) * 1996-08-06 1999-03-02 Atwell; Charles G. Method and apparatus for high speed delivery of particulate material
US6656412B2 (en) 2001-08-17 2003-12-02 Philip Morris Incorporated Compaction system for particles in particle filled cavities of an article
US6723033B1 (en) 1999-03-02 2004-04-20 Philip Morris Incorporated Method and apparatus for producing particle bearing filter rod
US20040107973A1 (en) * 2002-12-09 2004-06-10 Atwell Charles Gary Foam injection device and method of filling cavities
EP3369325A1 (en) * 2017-03-02 2018-09-05 International Tobacco Machinery Poland Sp. z o.o. A garniture device and a machine and a method for manufacturing multi-segment filter rods

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259029A (en) * 1963-07-11 1966-07-05 Liggett & Myers Tobacco Co Apparatus and process for making filter tips for cigarettes
US3312151A (en) * 1963-10-04 1967-04-04 Molins Organisation Ltd Apparatus for manufacturing composite filter plugs
US3350251A (en) * 1962-07-30 1967-10-31 Harry E Davis Method and apparatus for producing plastic tubing
US3354887A (en) * 1965-01-04 1967-11-28 Liggett & Myers Tobacco Co Apparatus for compacting cigarette filter tip assemblies containing granular material
US3357321A (en) * 1965-07-08 1967-12-12 Liggett & Myers Tobacco Co Apparatus and process for making multisectional filter tips for cigarettes
US3464324A (en) * 1967-09-11 1969-09-02 Reynolds Tobacco Co R Loose granular filter making machine
US3464421A (en) * 1968-02-14 1969-09-02 Reynolds Tobacco Co R Integral inline granular filter cigarette machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350251A (en) * 1962-07-30 1967-10-31 Harry E Davis Method and apparatus for producing plastic tubing
US3259029A (en) * 1963-07-11 1966-07-05 Liggett & Myers Tobacco Co Apparatus and process for making filter tips for cigarettes
US3312151A (en) * 1963-10-04 1967-04-04 Molins Organisation Ltd Apparatus for manufacturing composite filter plugs
US3367245A (en) * 1963-10-04 1968-02-06 Molins Organisation Ltd Apparatus for producing composite filter plugs
US3354887A (en) * 1965-01-04 1967-11-28 Liggett & Myers Tobacco Co Apparatus for compacting cigarette filter tip assemblies containing granular material
US3357321A (en) * 1965-07-08 1967-12-12 Liggett & Myers Tobacco Co Apparatus and process for making multisectional filter tips for cigarettes
US3464324A (en) * 1967-09-11 1969-09-02 Reynolds Tobacco Co R Loose granular filter making machine
US3464421A (en) * 1968-02-14 1969-09-02 Reynolds Tobacco Co R Integral inline granular filter cigarette machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844200A (en) * 1973-05-07 1974-10-29 Brown & Williamson Tobacco Continuous manufacture of a multiple filter rod having spaced pockets containing particulate material
US4285678A (en) * 1978-03-23 1981-08-25 Molins Limited Method and apparatus for making composite filter rod
US5322495A (en) * 1992-04-27 1994-06-21 Philip Morris Incorporated High speed vacuum assisted free flowing material inserter in filter rod manufacture
US5339871A (en) * 1993-05-04 1994-08-23 Philip Morris Incorporated Apparatus and methods for transferring and metering granular material
US5875824A (en) * 1996-08-06 1999-03-02 Atwell; Charles G. Method and apparatus for high speed delivery of particulate material
US6723033B1 (en) 1999-03-02 2004-04-20 Philip Morris Incorporated Method and apparatus for producing particle bearing filter rod
US6656412B2 (en) 2001-08-17 2003-12-02 Philip Morris Incorporated Compaction system for particles in particle filled cavities of an article
US20040107973A1 (en) * 2002-12-09 2004-06-10 Atwell Charles Gary Foam injection device and method of filling cavities
EP3369325A1 (en) * 2017-03-02 2018-09-05 International Tobacco Machinery Poland Sp. z o.o. A garniture device and a machine and a method for manufacturing multi-segment filter rods
CN108523214A (zh) * 2017-03-02 2018-09-14 国际烟草机械波兰有限责任公司 装饰装置和用于制造多段式滤棒的机器和方法
EP3369325B1 (en) 2017-03-02 2023-05-10 International Tobacco Machinery Poland Sp. z o.o. A garniture device and a machine and a method for manufacturing multi-segment filter rods

Also Published As

Publication number Publication date
DE1907458C3 (de) 1979-02-08
CH507668A (fr) 1971-05-31
DE1907458B2 (de) 1978-06-08
DE1907458A1 (de) 1970-11-26
GB1231271A (enrdf_load_stackoverflow) 1971-05-12
FR2002013A1 (enrdf_load_stackoverflow) 1969-10-03

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