CN100581396C - Process and apparatus for high-speed filling of composite cigarette filters - Google Patents
Process and apparatus for high-speed filling of composite cigarette filters Download PDFInfo
- Publication number
- CN100581396C CN100581396C CN02830064A CN02830064A CN100581396C CN 100581396 C CN100581396 C CN 100581396C CN 02830064 A CN02830064 A CN 02830064A CN 02830064 A CN02830064 A CN 02830064A CN 100581396 C CN100581396 C CN 100581396C
- Authority
- CN
- China
- Prior art keywords
- particulate matter
- chamber
- filter tip
- tip section
- filter
- 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
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Classifications
-
- 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
-
- 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
- A24D3/0208—Cutting filter materials
Abstract
A process of manufacturing composite filter stock (14)rovided that includes several steps. In a first step, a paper carrier strip (50) feeds along a conveyor (30). Along one edge of the carrier strip, the paper is folded back against itself. Fibrous filter segments (22) are then deposited on the carrying strip in spaced apart intervals. The spacing defines cavities (16) between adjacent filter segments. The carrier strip with the deposited filter segments is fed along a path (110) of travel into an elongated guide (26) or support chamber that substantially surrounds the circumference of the paper-enveloped segments (22) and which leaves a narrow fill opening (62)opposite an elongated particulate filling opening (112) that is elongated in the direction of motion of the carrying strip. Suction or a vacuum is concurrently applied adjacent the narrow opening (62), the suction increasing a downward momentum of a gravity feed stream of particulate matter (20) and concurrently vacuums away loose particulate matter. The cavities are concurrently filled with the particulate matter over a length (L) corresponding to a predetermined path of travel of the carrying strip. The folded over edge (104) is then unfolded and adhered to seal the fill opening. The filter stock is then cut to length, the cutting being registered to create discrete composite filter segments.
Description
Technical field
The present invention relates to a kind of method and apparatus that is used to produce cigarette filter, relate in particular in filter tip assembly operation process the method and apparatus that particulate material is filled at a high speed in the discrete chamber that is limited by adjacent single filter tip piece.
Background technology
In composite filter-tip, be filled with particulate material in the chamber, the packing ratio of chamber is extremely important.This is because when cigarette was put into mouth, it was in the plane of approximate horizontal.Thereby the gravity effect makes described particulate material leave the top of chamber.Will produce a unshielded nothing like this and filter bypass above particulate material, this bypass can not stop flowing of smog.This bypass is not understood as yet to the influence of filter-tip filter capacity, still, the linear ratio of compare bypass width and filter tip piece width, this influence may be disproportionate big.In fact, fluid flow principals shows that fluid is preferably along the channel flow of minimum drag, so the existence of any this bypass segment all can make the filter efficiency of particulate matter reduce greatly.
With reference to the U.S. Pat 3,312,152 (its content is bonded to this with for referencial use) that licenses to Williamson, a kind of device of attempting to fill filter cavities has been described wherein.The Williamson device is indoor with the discrete cavities that particulate material is sent between the filter tip piece.Yet the speed of service of this device is restricted, and fills the chamber that passes through fast because its poor efficiency ground relies on gravity.
A kind of existing machine, as U.S. Pat 4,063,494 and US5, machine described in 908,030, the content of these two pieces of patents are bonded to this with for referencial use, this machine comprises the receiving magazine gravity feeding, colyliform, and this receiving magazine receives interval adjacent one another are and is arranged in the filter tip section that paper is entrusted.Afterwards, entrusting of loading entered in an assembly or the guide channel and towards fill area, in fill area, receiving slit processed and enters by described paper on wheel.As license to described in the U.S. Pat 4,015,514 (its content is bonded to this with for referencial use) of Nichols, pass through adjacent filter tip section and vacuumize, to promote the filling of described chamber.But because not only the spacing of filter tip section changes, and the density of cellulose acetate filters also changes, so the filled chamber as one man that can not link up.This just means the packing ratio in order to ensure minimum, and this method must so be carried out more than desired value chamber is carried out crossing significantly filling.Owing to industrially do not need high packing ratio, this point remedies industrial having obtained.In this manner, if the target packing ratio is enough high, described method can allow very big variation.
In addition, although in fact industrial required packing ratio is very low, but wish with the described chamber of particle complete filling.As described above, this is because the verified chamber that is not full of fully allows smog to walk around the particle of filling, thereby can not make the undesired composition in the particle removal smog.
In addition, the mistake of chamber is filled or particle is overflowed from chamber, and the annex or the paper that all may make particle stick to the outside is entrusted, thereby is embedded in the near surface of final products, makes it produce ugly stain or vestige.
Need a kind of method with economically feasible mode complete filling filter cavities.Particularly, need a kind of method and apparatus of filling active charcoal filter cavities with the speed that surpasses 200m/min apace.
Summary of the invention
The invention provides a kind of method of producing the composite filter-tip material, it comprises several steps:
A) the fiber filter tip section is deposited on spaced apart relation entrusts, thereby between adjacent filter tip section, limit chamber;
B) will deposit the entrusting along the delivery pathways that moves in elongated supporting chamber of filter tip section, this supporting chamber is roughly round the periphery of entrusting that keeps filter tip section, and the relative narrow filling mouth of the particles filled mouth that stays next and fill assembly, described narrow filling mouth extends along entrusting travel direction;
C) simultaneously near narrow fillings mouthful, vacuumize or aspirate, thereby described suction has increased the momentum under the gravity feed flow direction of particulate matter and taken the loose granule material away;
D) fill a segment length in the described chamber with described particulate matter simultaneously, this length is corresponding to the default mobile route of entrusting; And
E) hermetic unit is installed, this part encapsulation filter tip section and particulate matter.
Therefore, in first step, paper is entrusted or annex is carried along a conveyer.Along an edge of entrusting, described paper is rolled self.The fiber filter tip section is deposited on described the entrusting with spaced apart relation subsequently.Described spacing defines the chamber between the adjacent filter tip section.Entrusting along mobile route of filter tip section with deposition is fed in elongated guide or the supporting chamber, this supporting chamber is sealed the periphery of section and is stayed next and particles filled mouthful of relative narrow filling mouth round paper substantially, and described particles filled mouthful is extended on the direction of motion of entrusting.Aspirate or vacuumize near narrow filling mouth simultaneously, described suction has increased the downward momentum of particulate matter gravity feed flow and has also taken the loose granule material simultaneously away.Fill a segment length of described chamber simultaneously with particulate matter, this length is corresponding to entrusting mobile predefined paths.Afterwards, the edge of rolling launches and bonding is filled mouth with sealing.Selectively be to use the described filling mouth of band sealing, thereby encapsulate described filter tip section and particulate matter.Afterwards the filter tip material is cut into certain-length, aim at described cutting to produce discrete composite filter-tip section.
In another feature, filter cavities can be apace and fully is filled with particulate matter, as carbon.
In another feature, the density of activated carbon can be controlled by introducing nonactive packing material.
According to an aspect of the present invention, provide a kind of method of producing the composite filter-tip material, it may further comprise the steps:
The fiber filter tip section is deposited on spaced apart relation entrusts, thereby between adjacent filter tip section, limit chamber,
To deposit the entrusting in delivery pathways to an elongated supporting chamber of moving of filter tip section, this supporting chamber is roughly round the periphery of entrusting that keeps filter tip section, and stays the relative narrow filling mouth of particles filled mouth next and fill assembly,
Vacuumize or aspirate,
Fill described chamber, and
One hermetic unit is installed, and sealing partly encapsulates filter tip section and particulate matter, it is characterized in that,
Described narrow filling mouth extends a segment length simultaneously in the face of some chambers along entrusting travel direction, and this length is corresponding to entrusting mobile predefined paths;
Utilize two suction inlets near narrow filling mouth, to vacuumize or aspirate simultaneously, wherein each suction inlet is along narrow opposed edges setting of filling mouth, thereby described suction increased particulate matter gravity feed stream downward momentum and take the loose granule material away
Fill a segment length of described chamber simultaneously with described particulate matter, this length is corresponding to entrusting mobile predefined paths.
Description of drawings
The perspective view of the filter tip section that Fig. 1 partly assembles for the present invention.
Fig. 2 is for can implement schematic representation of apparatus of the present invention.
Fig. 3 a is the perspective view of particulate matter fill assembly of the present invention.
The perspective, staggered cross-sectional view of the particulate matter fill assembly that Fig. 3 b is done for the basic plane A in Fig. 3 a.
Fig. 3 c is the front view of Fig. 3 b midship section.
The front view of the section of the particulate matter fill assembly that Fig. 3 d is done for the plane B in Fig. 3 a.
The sectional perspective view of the assembly among Fig. 3 a that Fig. 3 e is done for the plane C in Fig. 3 d.
Fig. 4 is the flow chart of the inventive method.
The specific embodiment
The invention provides a kind of device 10 and method 12 of producing composite filter-tip material 14, described filter tip material 14 has the chamber 16 (being clearly shown that as Fig. 2) that is filled with particulate matter 20.With reference now to Fig. 1,, chamber 20 is limited between two filter tip pieces 22, and described filter tip piece is generally used for making cellulose acetate filter.Particulate matter 20 is preferably active carbon 24, but also can comprise sepiolite, silica gel and carbon non-activated for any activity or inert matter that other is fit to.These particulate matters 20 also can comprise aromatic particulate.
The device 10 that can finish described method 12 is essentially U.S. Pat 4,223, the device shown in 597 (its content is bonded to this with for referencial use), and fill method wherein, US4, filling part 12 and receiving system in 223,597 patents are improved.
With reference now to Fig. 2,, wherein more at large shows device 10.Device 10 comprises annex or body of tool 26, band shape conveyer belt 30, funnel 32, conveyer 34, the hopper 36 that contains solid material 20, separation chamber 40 and vacuumizes power set 42, this vacuumizes power set 42 and links together with relevant vacuum lines (as 44,46) and other connector in the manner hereinafter described.
In operation, vacuumize power set 42 by discharging air and in separation chamber 40, produce vacuum from outlet 92.Cyclone separator and filter 56 filter dust in air, and the particulate matter 20 that is sucked in fill assembly 64 by vacuum lines 44 just is suspended in the described air.This vacuum action by evacuation slits 60 discharged can loose existence in fill assembly 64 any particle, this evacuation slits 60 is arranged on any side of opening 62 and leads to chamber 16.Airborne particulate matter 20 is fallen the bottom of separation chamber 40, and by there being scale rotation lock air chamber 52 to enter hopper 36.Rotation lock air chamber 52 makes separation chamber 40 have different basically pressure with hopper 36, and wherein the pressure in the hopper is roughly environmental pressure.Feeding line 54 provides additional solid material 20 for hopper as required.Hopper 36 is deposited on the conveyer belt 34 particulate matter 20.Conveyer belt 34 is sent to funnel 32 upper areas with solid material 20 from hopper 36, afterwards, makes it enter funnel 32.The falred entrance 33 of funnel 32 has the opening of the broad that narrows down gradually along flow direction, thereby causes the acceleration of particulate matter 20.
With reference now to Fig. 3 a-3e,, wherein show the fill assembly 64 of device 10, for clarity, along having made section A and B, and made section C along the moving line of filter assemblies 14 with the direction of moving line traversed by.
With reference now to Fig. 4,, method 12 comprises a plurality of steps.In first step 100, paper tape or entrust 50 along 30 feedings of band shape conveyer belt.Along the one side 102 of entrusting 50, described paper oneself stacks, and forms convolution 104.In second step 106, fiber filter tip section 22 is deposited on spaced apart relation and entrusts on 50.Spacing between the filter tip section 22 defines the chamber 16 between the adjacent filter tip section.In third step 108, entrusting 50 filter tip sections 22 with deposition is fed in the annex 26 along mobile alignment 110, described annex 26 is basically round the periphery of filter tip section 22, and stay a narrow filling mouthfuls 62, it is 2 to 3mm wide that this filling mouth is generally, relative with particles filled mouthful 112.The described mouth 112 of filling extends along the direction of motion 110 of entrusting 50, represents with arrow Y in Fig. 3 e.
In the 4th step 114, suction or vacuumize and be applied to simultaneously adjoining on the narrow opposite side of filling mouthfuls 62 evacuation slits 60 has been discharged loose granule material 20 (be also referred to as and overflow material) thereby described suction has increased the downward momentum and the suction that vacuumize gravity feed stream auxiliary, particulate matter 20.This also helps to return at convolution 104 and passes narrow filling mouthfuls 62 and prevent that particulate matter 20 from forming layering between overlapping region 116 (convolution 104 will be bonded in this) and convolution when sealing described opening.This restricted particulate matter 20 is considered to product defects and is denied access to production procedure.In the 5th optional step 118, enter recirculation after the particulate matter that is detached, and when passing air lock 52, pressurize again, it is deposited in the hopper 36 afterwards.Thereby avoided this defective.
In the 6th step 120, chamber 16 is filled a predetermined length L (shown in Fig. 3 e) with particulate matter 20 simultaneously, and this length is corresponding to the mobile route 110 of entrusting 50.In the 7th step 122, expansion and bonding are to seal described filling mouth 62 after the folded-over edge 104.Alternatively, can use patent US4, the described filling mouth 62 of 225,579 described band sealings, thus encapsulation filter tip section 22 and particulate matter 20 produce the filter tip material of discharging from annex 26.In the 8th step 124, be cut into certain-length after the described filter tip material, described cutting is aligned so that cut described filter tip section 22, thereby forms discrete composite filter-tip section, and described filter tip section can fit together with makings and form cigarette.
In another embodiment of the present invention, particulate matter 20 is made up of active material (active carbon 24) and inert matter (as inert filler 25).No matter be to activity or inert matter, graininess all is very important, and this is because this feature can influence to the narrow speed of filling the acceleration of mouth of chamber.In this way, the amount of the carbon in the filler 24 can change with preferred according to test.In addition, the influence of the taste of 24 pairs of cigarettes of active material and strainability also can be controlled.The amount of (by adding filler) control activated carbon 24 is necessary in this way, this is because the length of the filling mouth 62 between the filter tip section 22 is that (just the speed of overall assembly operation is such in variation, be that filter tip section 22 can not very accurately entrusted on 50 at interval, thereby on either direction, depart from from desirable relative position be up to 0.5mm), thereby the size that reduces chamber 16 is impossible.In addition, be extensive use of the most and obtainable active filler, promptly activated carbon 24, only are under a kind of a single state.The activated carbon 24 that is under 50% activated state can not be ordered with economic price.In addition, active material to the ratio of inert matter can be before the particle hopper 40 of mixture being put into device 10 by premixed active material and inert matter and precisely controlled.
In an advantage of the present invention, can reach the filling speed of 250m/min, perhaps than fast 5 times of the filling speed of the emulative method of any complete filling chamber.
In another advantage of the present invention, as the function of charging rate and elongated filling mouth length, complete filling filter tip chamber is possible (reaches 100% filling be possible).
On the described here embodiments of the invention basis, it is possible making multiple changes and improvements.Though only illustrate and described specific schematic embodiment of the present invention here, the improvement of wide region, variation and replacement are conceivable in foregoing disclose.In some instances, features more of the present invention can be used under the situation that does not have corresponding use further feature.Therefore, should be appreciated that the description of front can be carried out the explanation of wide region, and should be appreciated that, it only is schematic and exemplary, and the spirit and scope of the invention only should be limited by appended claim.
Claims (8)
1. method of producing the composite filter-tip material, it may further comprise the steps:
The fiber filter tip section is deposited on spaced apart relation entrusts, thereby between adjacent filter tip section, limit chamber,
To deposit the entrusting in delivery pathways to an elongated supporting chamber of moving of filter tip section, this supporting chamber is roughly round the periphery of entrusting that keeps filter tip section, and stays the relative narrow filling mouth of particles filled mouth next and fill assembly,
Vacuumize or aspirate,
Fill described chamber, and
One hermetic unit is installed, and sealing partly encapsulates filter tip section and particulate matter, it is characterized in that,
Described narrow filling mouth extends a segment length simultaneously in the face of some chambers along entrusting travel direction, and this length is corresponding to entrusting mobile predefined paths;
Utilize two suction inlets near narrow filling mouth, to vacuumize or aspirate simultaneously, wherein each suction inlet is along narrow opposed edges setting of filling mouth, thereby described suction increased particulate matter gravity feed stream downward momentum and take the loose granule material away
Fill a segment length of described chamber simultaneously with described particulate matter, this length is corresponding to entrusting mobile predefined paths.
2. the method for claim 1 is characterized in that described particulate matter is mixture active and inactive ingredients.
3. the method for claim 1 is characterized in that described particulate matter comprises aromatic particulate.
4. the method for claim 1 is characterized in that the described particulate matter of being taken away is recycled.
5. the method for claim 1 is characterized in that by described filter tip section described filter tip material being cut into certain length, thereby forms discrete composite filter-tip section.
6. the method for claim 1 is characterized in that described fill assembly comprises funnel-shaped opening, and this opening is towards the particulate matter stream that flows into, thereby helping to guide and quicken described particulate matter enters described chamber.
7. the method for claim 1 is characterized in that the described narrow width of mouth of filling is between 2 to 3mm.
8. the product filters of a high-speed production, this product have the chamber that complete filling basically has particulate matter, and wherein said product is by producing as each described method among the claim 1-7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2002/005519 WO2004056221A1 (en) | 2002-12-19 | 2002-12-19 | Process and apparatus for high-speed filling of composite cigarette filters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731939A CN1731939A (en) | 2006-02-08 |
| CN100581396C true CN100581396C (en) | 2010-01-20 |
Family
ID=32676685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02830064A Expired - Lifetime CN100581396C (en) | 2002-12-19 | 2002-12-19 | Process and apparatus for high-speed filling of composite cigarette filters |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP1571933B1 (en) |
| JP (1) | JP4203021B2 (en) |
| KR (1) | KR100952181B1 (en) |
| CN (1) | CN100581396C (en) |
| AT (1) | ATE357157T1 (en) |
| AU (1) | AU2002353368A1 (en) |
| BR (1) | BR0215988B1 (en) |
| CA (1) | CA2510186C (en) |
| DE (1) | DE60219083T2 (en) |
| ES (1) | ES2282499T3 (en) |
| MX (1) | MXPA05006632A (en) |
| WO (1) | WO2004056221A1 (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060196513A1 (en) * | 2004-12-30 | 2006-09-07 | Philip Morris Usa Inc. | Triple hopper max with built-in granulated cavity filling capability |
| US8047208B2 (en) * | 2006-05-31 | 2011-11-01 | Philip Morris Usa Inc. | Double action filter assembly wheel with flipping wheel |
| US7849889B2 (en) * | 2006-05-31 | 2010-12-14 | Philip Morris Usa Inc. | Applicator wheel for filling cavities with metered amounts of particulate material |
| US9204668B2 (en) | 2007-09-18 | 2015-12-08 | Philip Morris Usa Inc. | Cigarette filter |
| DE102009037685A1 (en) * | 2009-08-18 | 2011-03-03 | Hauni Maschinenbau Ag | Apparatus and method for forming a filter strand of the tobacco processing industry |
| EP2401929A1 (en) | 2010-06-30 | 2012-01-04 | Philip Morris Products S.A. | Filter for a smoking article |
| EP2462821A1 (en) | 2010-12-10 | 2012-06-13 | Philip Morris Products S.A. | Smoking article having embossed transparent wrapper |
| EP2462820A1 (en) | 2010-12-10 | 2012-06-13 | Philip Morris Products S.A. | Smoking article having outer wrapper with cut-out portion |
| EP2462822A1 (en) | 2010-12-13 | 2012-06-13 | Philip Morris Products S.A. | Smoking article including flavour granules |
| US20130085052A1 (en) | 2011-09-29 | 2013-04-04 | R. J. Reynolds Tobacco Company | Apparatus for Inserting Microcapsule Objects into a Filter Element of a Smoking Article, and Associated Method |
| ES2536954T3 (en) | 2011-10-21 | 2015-06-01 | Philip Morris Products S.A. | Smoking item that has a mouth end cavity with markings |
| RS55848B1 (en) | 2011-11-07 | 2017-08-31 | Philip Morris Products Sa | Smoking article with visible contents |
| WO2014012841A2 (en) | 2012-07-17 | 2014-01-23 | Philip Morris Products S.A. | Smoking article including flavoured wrapper with cut-out portion |
| WO2014012840A2 (en) | 2012-07-17 | 2014-01-23 | Philip Morris Products S.A. | Smoking article including flavoured wrapper with relief pattern |
| US20140034072A1 (en) * | 2012-08-01 | 2014-02-06 | Celanese Acetate Llc | Methods of Producing Filters and Filter Rods Comprising Porous Masses and Articles Relating Thereto |
| US9215894B2 (en) * | 2013-03-14 | 2015-12-22 | Celanese Acetate Llc | Apparatuses, systems, and associated methods for forming organic porous masses for flavored smoke filters |
| MY178538A (en) | 2013-12-20 | 2020-10-15 | Philip Morris Products Sa | Smoking article including flavour granules having permeable outer layer |
| PL410571A1 (en) | 2014-12-16 | 2016-06-20 | International Tobacco Machinery Poland Spółka Z Ograniczoną Odpowiedzialnością | Segment of tobacco industry multi-component product, device for manufacturing segments of multi-component products, as well as method and the device for putting together elements of a multi-component shaft |
| DE102015108252A1 (en) | 2015-05-26 | 2016-12-01 | Hauni Maschinenbau Gmbh | Method and device for producing a multi-segment filter |
| DE102015108251A1 (en) | 2015-05-26 | 2016-12-01 | Hauni Maschinenbau Gmbh | Method and device for producing multi-segment filters |
| EP3669675A1 (en) * | 2018-12-17 | 2020-06-24 | International Tobacco Machinery Poland Sp. z o.o. | Bead feeding method and bead feeding unit |
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|---|---|---|---|---|
| GB1006470A (en) * | 1962-06-26 | 1965-10-06 | Borg Warner | Tobacco smoke filter and method for treating tobacco smoke |
| US3524454A (en) * | 1969-05-29 | 1970-08-18 | John H Sexstone | Multiple filter assembly |
| US4541826A (en) * | 1981-09-25 | 1985-09-17 | Molins Plc | Method and apparatus for making composite filter rods |
| CN2308262Y (en) * | 1997-06-09 | 1999-02-24 | 荆树汉 | Filter tip of cigarette |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1106931A (en) | 1963-10-04 | 1968-03-20 | Molins Organization Ltd | Improvements in apparatus for producing composite filter plugs |
| US3807286A (en) * | 1972-10-04 | 1974-04-30 | Brown & Williamson Tobacco | Multiple filter having a loose granule section with perforated inner wrapper |
| US4015514A (en) | 1976-01-29 | 1977-04-05 | Philip Morris Incorporated | Apparatus for making cigarette filters |
| US4225597A (en) | 1976-10-01 | 1980-09-30 | Schering Corporation | Beclomethasone dipropionate-hexane solvate and aerosols prepared therefrom |
| CH613850A5 (en) | 1976-11-26 | 1979-10-31 | Baumgartner Papiers Sa | |
| US4063494A (en) | 1977-02-18 | 1977-12-20 | Liggett Group Inc. | Apparatus for making filter rods for cigarettes |
| CH645251A5 (en) * | 1980-04-08 | 1984-09-28 | Baumgartner Papiers Sa | METHOD FOR PRODUCING A CIGARETTE FILTER UNIT AND DEVICE FOR IMPLEMENTING THE METHOD. |
| US5221247A (en) * | 1992-04-27 | 1993-06-22 | Philip Morris Incorporation | High speed vacuum assisted free flowing material inserter in filter rod manfacture |
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| JPH11127834A (en) | 1997-10-31 | 1999-05-18 | Kayoko Sora | Coffee cigarette and metal oxide filter |
| US6537186B1 (en) * | 2000-07-05 | 2003-03-25 | Baumgartner Papiers S.A. | Process and apparatus for high-speed filling of composite cigarette filters |
-
2002
- 2002-12-19 ES ES02788389T patent/ES2282499T3/en not_active Expired - Lifetime
- 2002-12-19 CA CA2510186A patent/CA2510186C/en not_active Expired - Lifetime
- 2002-12-19 WO PCT/IB2002/005519 patent/WO2004056221A1/en active IP Right Grant
- 2002-12-19 KR KR1020057011093A patent/KR100952181B1/en active IP Right Grant
- 2002-12-19 AU AU2002353368A patent/AU2002353368A1/en not_active Abandoned
- 2002-12-19 EP EP02788389A patent/EP1571933B1/en not_active Expired - Lifetime
- 2002-12-19 CN CN02830064A patent/CN100581396C/en not_active Expired - Lifetime
- 2002-12-19 AT AT02788389T patent/ATE357157T1/en active
- 2002-12-19 MX MXPA05006632A patent/MXPA05006632A/en active IP Right Grant
- 2002-12-19 JP JP2004561704A patent/JP4203021B2/en not_active Expired - Lifetime
- 2002-12-19 BR BRPI0215988-0A patent/BR0215988B1/en active IP Right Grant
- 2002-12-19 DE DE60219083T patent/DE60219083T2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1006470A (en) * | 1962-06-26 | 1965-10-06 | Borg Warner | Tobacco smoke filter and method for treating tobacco smoke |
| US3524454A (en) * | 1969-05-29 | 1970-08-18 | John H Sexstone | Multiple filter assembly |
| US4541826A (en) * | 1981-09-25 | 1985-09-17 | Molins Plc | Method and apparatus for making composite filter rods |
| CN2308262Y (en) * | 1997-06-09 | 1999-02-24 | 荆树汉 | Filter tip of cigarette |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4203021B2 (en) | 2008-12-24 |
| WO2004056221A1 (en) | 2004-07-08 |
| CA2510186A1 (en) | 2004-07-08 |
| DE60219083D1 (en) | 2007-05-03 |
| EP1571933B1 (en) | 2007-03-21 |
| BR0215988A (en) | 2005-11-01 |
| AU2002353368A1 (en) | 2004-07-14 |
| MXPA05006632A (en) | 2005-12-14 |
| KR100952181B1 (en) | 2010-04-09 |
| DE60219083T2 (en) | 2007-12-13 |
| ES2282499T3 (en) | 2007-10-16 |
| ATE357157T1 (en) | 2007-04-15 |
| JP2006510378A (en) | 2006-03-30 |
| BR0215988B1 (en) | 2012-01-24 |
| CA2510186C (en) | 2011-02-15 |
| CN1731939A (en) | 2006-02-08 |
| EP1571933A1 (en) | 2005-09-14 |
| KR20050090127A (en) | 2005-09-12 |
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