US3791265A - Apparatus for making tobacco smoke filter - Google Patents

Apparatus for making tobacco smoke filter Download PDF

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Publication number
US3791265A
US3791265A US00217797A US3791265DA US3791265A US 3791265 A US3791265 A US 3791265A US 00217797 A US00217797 A US 00217797A US 3791265D A US3791265D A US 3791265DA US 3791265 A US3791265 A US 3791265A
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United States
Prior art keywords
filter
plug
wall
flute
rod
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Expired - Lifetime
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US00217797A
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English (en)
Inventor
D Westcott
G Woodman
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Imperial Tobacco Group Ltd
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Imperial Tobacco Group Ltd
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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
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0283—Manufacture of tobacco smoke filters for filters with special features with means for a non-axial smoke flow

Definitions

  • a method of making a tobacco smoke filter for a cigarette comprising providing a cylinder of filter material and compacting a core section of the cylinder to provide an end wall which is denser than the cylindrical wall of the filter.
  • the method comprises providing a double length filter rod, compacting a core section of the rod from both ends simultaneously to provide a central plug section denser than that of the cylindrical wall and separating the rod transversely at the central plug section to provide two hollow cylindrical filters each with one denser end wall.
  • apparatus for forming a filter plug having a compacted core section comprising a fluted drum for holding filter plug blanks thereon, a compacting rod aligned with each flute and adapted to reciprocate relative to the flute, and means for reciprocating each rod relative to each flute during rotation of the drum to compact a core section of a filter plug blank held in a flute of the drum.
  • a tobacco smoke filter for a cigarette comprising a cylinder of filter material the interior of which provides a flow path of lower resistance to flow than the wall of the cylinder, one end of the cylinder being sealed with a tranverse wall member which presents a higher resistance to flow than the wall of the cylinder, whereby, in use, flow of smoke purely axially of the filter will be inhibited, causing smoke flow through the cylinder wall.
  • the invention also includes a cigarette comprising a tobacco rod and a hollow cylindrical filter having at the mouth end an end wall of material denser than the cylindrical wall of the filter, and smoke channels between the external surface of the filter and wrapper, whereby in use tobacco smoke passing into the interior of the filter from the tobacco rod will pass through the cylinder wall and through the smoke channels to the mouth end of the cigarette,
  • FIG. 1 is a longitudinal cross-section through a conventional filter plug
  • FIG. 2 is a longitudinal cross-section through a filter plug according to the present invention
  • FIGS. 3 and 4 illustrate one method providing a filter plug as shown in FIG. 2,
  • FIGS. 5 and 6 illustrate a further method of providing the filter plug of FIG. 2,
  • FIG. 7 illustrates an alternative way of effecting the method illustrated by FIGS. 5 and 6,
  • FIG. 8 is a part sectional elevation of one form of apparatus for making filter plugs according to the method described with reference to FIG. 7,
  • FIG. 9 is a cross-section on line IX-IX of the apparatus shown in FIG. 8,
  • FIGS. 10a and 10b are an end cross section and a lateral cross-section respectively through a cigarette including a filter according to the present invention.
  • FIG. 11a and Ilb are an end cross-section and a lateral cross-section respectively through a further cigarette incorporating a filter according to the present invention, and
  • FIGS. 12a and 1212 are an end cross-section and a lateral cross-section respectively through yet a further cigarette incorporating a filter according to the present invention.
  • FIG. 1 a conventional filter plug 2 of cylindrical form and made of cellulose acetate fibre.
  • dimension a which is the length of the cylindrical plug adapted to be disposed longitudinally of the cigarette rod is 15 mm and dimension 1) which is the diameter of the cylindrical plug, is 8 mm.
  • the pressure drop of a typical cellulose acetate filter plug of these dimensions is 2 /2 cm of water and the efficiency of a typical plug is 30 percent i.e. 30 percent of all particulate matter carried by the smoke passing through such a plug is retained within the filter plug.
  • a cellulose acetate filter plug 3 comprising a hollow cylindrical member 4 sealed at one end with an end plug which is denser than the wall 4 and which blanks off one end of the hollow core.
  • this plug is of the same overall dimensions as plug 2 where a is 15 mm., b is 8 mm., and furthermore c is 4' mm, d is 2 mm. and e is 4 mm. Because the density of the plug 5 is greater than the density of the hollow cylindrical wall 4 the flow path adopted by the tobacco smoke passing through this filter will be transversely of the cylindrical wall 4 as indicated by arrows q The smoke will not pass through the end plug 15 in passing through the filter but will take the path of least resistance.
  • The'reason for these beneficial results is thought to be the increased transverse area of filter plug material presented to the path of the tobacco smoke.
  • the area of material presented to the tobacco smoke in the plug 2 of FIG. 1 is that of a disc of diameter b (16 11 sq.mm.) whereas in FIG. 2 the area presented to the tobacco smoke is that of the surface of a cylinder of diameter c and length a e. (44 11' sq.mm.).
  • the substantial increase in cross-sectional area of filter material presented to the tobacco smoke accounts for the beneficial results achieved by decrease in pressure drop across the filter and/or increase in efficiency.
  • FIGS. 3 and 4 illustrate one way of forming a filter plug according to the present invention.
  • a cylindrical plug 10 of cellulose acetate length 15 mm. diameter 8 mm. is supported upon a solid surface 6.
  • a cutting tool 11 of diameter somewhat less than 4 mm. is plunged into the cylindrical rod for a distance of l l mm. whereby a core of the cellulose acetate is cut from the cylinder and, as it is cut it is compacted or compressed by the toolill to form a very dense wall 13 at the lower end of the cylinder as shown in FIG. 4. If tearing is experienced in the cutting action, the use of a warm tool can assist in providing a clean cut.
  • the resulting plug 12 is in the form of a hollow cylinder having a cylindrical wall 14 of cellulose acetate having the same density as that of the filter plug from which it was formed, and an integral end wall or plug 13 of a density which is greater than that of the wall 14.
  • the core 15 of the filter plug is hollow.
  • a cylindrical cellulose acetate blank being 15 mm long and 8 mm diameter and from which the filter plug is to be formed includes an external cylindrical rod 21 of cellulose acetate packed at a density similar to that of the plug 10 of FIG. 3 (i.e. at the density required for the wall of the final cigarette filter).
  • a core 22 of 4 mm diameter made from cellulose acetate of a density less than that of the wall 21 and thus more easily compressible.
  • Such a blank may be conveniently formed by co-extruding the core 22 of less dense cellulose acetate with the surrounding cylindrical rod 21 of more dense cellulose acetate.
  • FIG. 2 To form a filter plug such as that shown in FIG. 2 the blank 20 of FIG. 5 is placed upon a solid support 19. A piston 23 as shown in FIG. 6 and of diameter somewhat less than 4 mm is plunged through the core to a depth of 11 mm to compress or compact the core 22 into a dense end plug 24 of 4 mm thickness as shown in FIG. 6. It will be appreciated that the cylindrical wall 21 will remain unaffected by this operation and will be of the same density as the material forming the plug. However the end plug 24 is arranged to be ofa density greater than that of the wall 21. Since the core 22 is distinct from and not integral with the cylindrical wall 21 of blank 20 no cutting action is required in forming the plug shown in FIG. 6, and a simple plunging action is all that is required.
  • the core material 22 need not be the same as that forming the wall 21.
  • both materials are cellulose acetate of different packing densitities, it will be appreciated that the core material could be different from that forming the wall 21. Of course neither need be cellulose acetate.
  • suitable materials could be a foamed synthetic resin or another synthetic fibre.
  • FIG. 7 there is shown yet another method of achieving a filter plug according to the present invention.
  • the method is similar to that shown in FIGS. 5 and 6 (but can be adapted to be similar to that shown in FIGS. 3 and 4) but in which a double length filter rod is plunged from both ends simultaneously whereby a central dense wall 30 is formed with two hollow cores 31 and 32.
  • the filter plug is separated by severing at 33 to form two filter plugs in accordance with the present invention.
  • the preferred method of achieving this dual length filter is in accordance with the method described with reference to FIGS. 5 and 6 since no cutting or tearing action is necessary.
  • the cutting action of FIGS. 3 and 4 can however be employed if required. It will be appreciated that no lower support is required for the filter plug during the plunging operation since the opposed forces of the two plungers 34 will balance.
  • FIG. 8 One form of apparatus suitable for producing a dual length filter plug similar to that shown in FIG. 7 is shown in FIG. 8.
  • This apparatus comprises a mounting plate attached to the frame of a machine and having mounted thereon a cylindrical housing 61 with fixed end plate 62 into the centre of which is rigidly fixed by nuts 63 one end of a stationary shaft 64. To the other end of the stationary shaft 64 is secured a stationary cam plate 65, a key 66 and nut 67 being employed to secure the cam plate to the shaft 64.
  • a dowel pin 71 locates the cam plate relative to the mounting plate 60 and a number of studs 72 secures the cam plate 70 to the mounting plate 60.
  • a cam surface 73 on the inner face of plate 70 extends adjacent the periphery of cam plate 70 starting at the top dead centre of the cam plate (i.e. at location M on FIG. 9) with zero rise and continuing to the bottom dead centre position (i.e. at location N in FIG. 9).
  • Cam plate 65 is similarly provided on its inner face with a cam surface 79 identical in form to cam surface 73. Cam surface 79 rises to a maximum from position M to N and is there stepped to zero for the remainder of the plate.
  • a stationary annular carbon pad 77 mounted on its inner face with an annular groove 78.
  • a drive shaft 83 mounted at one end with a drive gear 84 connected to a drive source (not shown).
  • a composite solid drum formed primarily of three disc segments 86, 87 and 88 fixed rigidly together (by means not shown) and doweled by dowel pin 90 to ensure accurate relative location.
  • the central disc 87 is provided at its periphery with 12 equi-spaced semi cylindrical flutes or slots 91 (see FIG. 9) each of the correct length and diameter to accommodate a dual length filter plug blank 99 e.g. 30 mm long and 8 mm diameter.
  • each slot 91 Communicating with each slot 91 is a plurality of channels 92 which in turn communicate with a common air duct 93 which extends through disc 88 and seals against groove 78 in the annular carbon pad 77.
  • the annular groove 78 in the annular carbon pad 77 extends from immediately before top dead centre position i.e. from position L as shown in FIG. 9 until the bottom dead centre position i.e. position N, extending in an anti-clockwise direction as indicated by arrow P. For the remainder of the circumference i.e. from N to L the channel 78 is blanked off.
  • a hopper (not shown) disposed with its outlet between locations L and M as viewed in FIG. 9 is arranged to deposit dual length filter plug blanks into the grooves 91 as they pass the location between L and M as disc 87 rotates.
  • each of the discs 86 and 88 Disposed in each of the discs 86 and 88 are twelve equi-spaced plungers 100, 101 respectively.
  • the plungers are housed within holes 102 and 103 respectively and in discs 86 and 8 8.
  • the ends of the plungers project to the cam plates 70 and 65 respectively and bear against the camsurfaces 73 and 79.
  • the plungers 100 and 101 are urged into contact with cam plates 70 and 65 by springs 104 and 105 respectively.
  • Cylindrical tools 106 and 107 slide within locating holes provided in annular guide plates 108 and 110 between the full line positions and the broken line positions shown in FIG. 8 as the cylinder moves from the top dead centre position M illustrated in FIG. 9 to the bottom dead position N illustrated in FIG. 9. For a 30 mm.
  • the tools are arranged to penetrate the ends of the blank for a distance of say 11 mm, leaving an 8 mm dense wall centrally of the plug.
  • the central core will form a 4 mm dense end wall for each plug in the manner described with reference to FIG. 7.
  • dual length filter plug blanks are fed into slots 91 between locations L and M as seen in FIG. 9, suction being applied to the slots 91 between the position L and N whereby the filter plug blanks are held in the grooves.
  • the plungers 100 and 101 will be cammed inwardly of the filter plug blank whereby the tools 106 and 107 will compact the core of the blank from either end to form a central dense end wall.
  • the cam surfaces are stepped whereby the plungers spring back to their retracted (full line) positions withdrawing, the tools from the filter plugs.
  • the suction to grooves 91 is cutoff. Immediately after location N the compacted plugs are free of the grooves 91.
  • cam surfaces and vacuum source are applied to the drum for more than half its revolution, it will be appreciated that either or both these actions could be operable for a shorter or longer period, depending upon the desired operation of the equipment.
  • the drum described above with reference to FIGS. 8 and 9 preferably forms part of a filter tip cigarette making machine and may for example replace the filter drum on a Hauni KFZ filter cigarette making machine.
  • the compacted dual length filter rods leaving the drum between locations N and Q as seen in FIG. 9 will be transferred to a drum containing two cigarette lengths located on either side of each dual length filter plug; these will be rolled in a paper wrapper to form two filter cigarettes joined end to end and will subsequently be severed to form two single filter tip cigarettes
  • the filter plugs made in accordance with the present invention can be used in a variety of ways. It will be appreciated that the plug having one end blocked by a wall will present one flat surface which can be placed at the mouth end of the cigarette to provide a pleasing appearance. In this event the open end of the cylindrical plug will abut the tobacco rod of the cigarette. Al-
  • the open end of the filter rod can be at the mouth end of the cigarette the plug of the filter rod then being in abutment with the tobacco rod of the cigarette.
  • FIGS. 10, 11 and 12 Three ways in which this can be achieved are shown in FIGS. 10, 11 and 12.
  • Plug 35 has a cylindrical wall 40 and a denser end wall 51.
  • the plug is wrapped by a dual layer paper wrapper comprising an external cylindrical sheath 41 and an internal corrugated sheath 42.
  • the internal corrugated sheath 42 contacts both the external sheath 41 and the external surface of the cylindrical wall 40.
  • air channels are provided between the corrugations of the sheath 42 and the external surface of the cylindrical wall 40.
  • FIG. 11 there is shown an alternative embodiment including a filter plug 36 according to the present invention comprising a cylindrical wall 45 and a denser end wall 52.
  • the plug is wrapped by a single corrugated or longitudinally fluted cigarette wrapper 46.
  • air passages are provided between the flutes of the wrapper 46 and the external surface of the cylindrical wall 45 providing passageways for the smoke passing through the wall of the filter to pass to the smokers mouth.
  • Such an arrangement of fluted or corrugated external wrapper for a cigarette also provides less surface contact between the cigarette wrapper and the smokers lips preventing sticking and also provides passage in the external corrugations of the paper in which ambient air can be drawn into the smokers mouth.
  • FIG. 12 there is shown yet another arrangement including a filter plug 37 in accordance with the present invention comprising a cylindrical wall 48 and a denser end wall 53.
  • the plug is provided with an external longitudinally fluted surface 49 and this is wrapped by a cylindrical wrapper 50.
  • longitudinal air channels are provided between the external flutes of the surface 49 of wall 48 and the wrapper 50 allowing smoke to pass to the smokers mouth.
  • the filter plug could in each instance be reversed to place the end walls or plugs 51, 52 and 53 respectively in abutment with the tobacco rods 54, 55 and 56 respectively in which case an open cylindrical end would be presented to the smokers mouth.
  • the open end could be blocked by an end plug but, unlike the relatively dense plug 51, 52 or 53, this plug would be provided merely to close the end of the cylinder and would be of a material providing a less dense surface than that of the wall of the cylinder of the filter plug thus inducing the smoke to flow through this plug into the smokers mouth.
  • the filter plugs according to the present invention need not be hollow but could be packed with a filter material which is less dense than that of the cylindrical wall. Nevertheless the cylindrical plug must still be provided with an end wall which is denser than that of the wall of the plug thus inhibiting flow and forcing the tobacco smoke to pass radially through the wall of the cylinder.
  • filter plugs according to the present invention are made is not important although cellulose acetate and foamed and other fibrous synthetic resins are preferred.
  • the preferred embodiment according to the present invention is that shown in FIG. 12 in which the longitudinal flutes or corrugations are already extruded within the cellulose acetate rod forming the filter plug and this is merely wrapped in a conventional cylindrical sheath.
  • Alternative arrangements can of course be provided.
  • the external surface of the filter could be dimpled or otherwise roughened merely to provide proturberances which space the overlying wrapper from the surface of the filter plug thereby providing air passages to enable the smoke to pass to the smokers mouth.
  • filter plugs in accordance with the present invention it is envisaged that much more efficient plugs can be provided but having the same pressure drop as those conventionally provided with present day filter plugs.
  • By increasing the pressure drop of the filter yet further increases in efficiency can be achieved.
  • Apparatus for making a selectively compacted tobacco smoke filter comprising a fluted drum for holding filter plug blanks thereon, a compacting rod alignable with each flute and means for reciprocating the rod relative to each flute, the rod having a diameter which is smaller than that of a tobacco smoke filter held in a flute of the drum whereby the rod is adapted to compact only a core section of the filter, leaving an annular uncompacted wall extending around the compacted core section.
  • Apparatus as claimed in claim 1 comprising two coaxial compacting rods for each flute disposed at opposite ends of the flute, and means for reciprocating the rods simultaneously relative to each flute to compact two core sections of a double tobacco smoke filter held in a flute of the drum.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Vacuum Packaging (AREA)
US00217797A 1971-02-01 1972-01-14 Apparatus for making tobacco smoke filter Expired - Lifetime US3791265A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB355071A GB1377181A (en) 1971-02-01 1971-02-01 Tobacco smoke filter

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US3791265A true US3791265A (en) 1974-02-12

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US00217797A Expired - Lifetime US3791265A (en) 1971-02-01 1972-01-14 Apparatus for making tobacco smoke filter
US393591A Expired - Lifetime US3888160A (en) 1971-02-01 1973-08-31 Tobacco smoke filter

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Application Number Title Priority Date Filing Date
US393591A Expired - Lifetime US3888160A (en) 1971-02-01 1973-08-31 Tobacco smoke filter

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US (2) US3791265A (da)
AU (2) AU460008B2 (da)
BE (1) BE778547A (da)
CA (1) CA957231A (da)
CH (1) CH535546A (da)
DK (1) DK132156C (da)
ES (1) ES399279A1 (da)
FI (1) FI52165C (da)
FR (1) FR2124961A5 (da)
GB (1) GB1377181A (da)
IE (1) IE36706B1 (da)
IT (1) IT949693B (da)
NL (2) NL173352B (da)
NO (1) NO133176C (da)
SE (1) SE377520B (da)
ZA (1) ZA72185B (da)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958498A (en) * 1974-01-18 1976-05-25 Payne Leslie E Method and apparatus for forming cigarette filters
US3985144A (en) * 1974-01-18 1976-10-12 Payne Leslie E Apparatus for forming cigarette filters
US4034765A (en) * 1975-10-30 1977-07-12 Liggett & Myers Incorporated Tobacco smoke filter
US4273142A (en) * 1979-07-16 1981-06-16 Teledyne Industries, Inc. Smoking filters
DE3150078A1 (de) * 1980-12-22 1982-07-22 Brown & Williamson Tobacco Corp., 40232 Louisville, Ky. Zigarettenfilter
US4942887A (en) * 1987-06-15 1990-07-24 Fabriques De Tabac Reunies, S.A. Filter mouthpiece for a smoking article
US5839449A (en) * 1996-01-29 1998-11-24 R.J. Reynolds Tobacco Company Low CO cigarette
US20080029115A1 (en) * 2004-04-22 2008-02-07 G.D Societa' Per Azioni Method of Production of a Cigarette Filter
US20080156337A1 (en) * 2006-12-28 2008-07-03 Philip Morris Usa Inc. Filter component cutting system
IT202000014095A1 (it) 2020-06-12 2021-12-12 Montrade S P A Metodo per la realizzazione di un prodotto da fumo, macchina per la realizzazione di un prodotto da fumo e uso di tale macchina ed un articolo da fumo così ottenuto
CN115724014A (zh) * 2021-08-31 2023-03-03 红云红河烟草(集团)有限责任公司 一种烟包装盘机

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022221A (en) * 1975-10-31 1977-05-10 American Filtrona Corporation Tobacco smoke filter
US4022222A (en) * 1975-11-06 1977-05-10 American Filtrona Corporation Tobacco smoke filter
US4026306A (en) * 1975-11-06 1977-05-31 American Filtrona Corporation Tobacco smoke filter
US4331166A (en) * 1980-05-02 1982-05-25 Philip Morris, Incorporated Cigarette
GB8429104D0 (en) * 1984-11-17 1984-12-27 British American Tobacco Co Tobacco smoke filters
PL223115B1 (pl) 2013-02-15 2016-10-31 Int Tobacco Machinery Poland Spółka Z Ograniczoną Odpowiedzialnością Sposób, mechanizm i urządzenie do chwilowego kompresowania materiału filtracyjnego
AU2015327893A1 (en) 2014-10-02 2017-05-18 Best Rider Global Limited Disposable tank electronic cigarette, method of manufacture and method of use

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354887A (en) * 1965-01-04 1967-11-28 Liggett & Myers Tobacco Co Apparatus for compacting cigarette filter tip assemblies containing granular material
US3517480A (en) * 1968-02-14 1970-06-30 Reynolds Tobacco Co R Apparatus for making loose granular filters
US3603058A (en) * 1967-09-05 1971-09-07 Hauni Werke Koerber & Co Kg Method and apparatus for the production of composite filter tips

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685523A (en) * 1969-06-27 1972-08-22 Molins Machine Co Ltd Tobacco smoke filter
US3625228A (en) * 1969-10-16 1971-12-07 H 2 O Filter Corp The Heat activated filter for smoking devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354887A (en) * 1965-01-04 1967-11-28 Liggett & Myers Tobacco Co Apparatus for compacting cigarette filter tip assemblies containing granular material
US3603058A (en) * 1967-09-05 1971-09-07 Hauni Werke Koerber & Co Kg Method and apparatus for the production of composite filter tips
US3517480A (en) * 1968-02-14 1970-06-30 Reynolds Tobacco Co R Apparatus for making loose granular filters

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958498A (en) * 1974-01-18 1976-05-25 Payne Leslie E Method and apparatus for forming cigarette filters
US3985144A (en) * 1974-01-18 1976-10-12 Payne Leslie E Apparatus for forming cigarette filters
US4034765A (en) * 1975-10-30 1977-07-12 Liggett & Myers Incorporated Tobacco smoke filter
US4273142A (en) * 1979-07-16 1981-06-16 Teledyne Industries, Inc. Smoking filters
DE3150078A1 (de) * 1980-12-22 1982-07-22 Brown & Williamson Tobacco Corp., 40232 Louisville, Ky. Zigarettenfilter
US4942887A (en) * 1987-06-15 1990-07-24 Fabriques De Tabac Reunies, S.A. Filter mouthpiece for a smoking article
US5839449A (en) * 1996-01-29 1998-11-24 R.J. Reynolds Tobacco Company Low CO cigarette
US20080029115A1 (en) * 2004-04-22 2008-02-07 G.D Societa' Per Azioni Method of Production of a Cigarette Filter
US7625328B2 (en) * 2004-04-22 2009-12-01 G.D. Societa' Per Azioni Method of production of a cigarette filter
US20080156337A1 (en) * 2006-12-28 2008-07-03 Philip Morris Usa Inc. Filter component cutting system
US7674218B2 (en) * 2006-12-28 2010-03-09 Philip Morris Usa Inc. Filter component cutting system
IT202000014095A1 (it) 2020-06-12 2021-12-12 Montrade S P A Metodo per la realizzazione di un prodotto da fumo, macchina per la realizzazione di un prodotto da fumo e uso di tale macchina ed un articolo da fumo così ottenuto
CN115724014A (zh) * 2021-08-31 2023-03-03 红云红河烟草(集团)有限责任公司 一种烟包装盘机
CN115724014B (zh) * 2021-08-31 2024-05-10 红云红河烟草(集团)有限责任公司 一种烟包装盘机

Also Published As

Publication number Publication date
AU8033975A (en) 1975-07-10
BE778547A (fr) 1972-05-16
NL7201154A (da) 1972-08-03
ZA72185B (en) 1972-09-27
IE36706B1 (en) 1977-02-02
FI52165B (da) 1977-03-31
DK132156C (da) 1976-04-05
DE2202576A1 (de) 1972-08-24
CA957231A (en) 1974-11-05
NL173352B (nl) 1983-08-16
IE36706L (en) 1972-08-01
FI52165C (fi) 1977-07-11
AU480865B2 (en) 1975-07-10
SE377520B (da) 1975-07-14
US3888160A (en) 1975-06-10
IT949693B (it) 1973-06-11
AU3794472A (en) 1973-07-19
CH535546A (de) 1973-04-15
DE2202576B2 (de) 1976-04-08
AU460008B2 (en) 1975-04-10
NO133176C (da) 1976-03-24
NL173352C (nl)
NO133176B (da) 1975-12-15
FR2124961A5 (da) 1972-09-22
ES399279A1 (es) 1974-12-16
GB1377181A (en) 1974-12-11
DK132156B (da) 1975-11-03

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