CN1216691A - Method and device for applying substances to filter material - Google Patents
Method and device for applying substances to filter material Download PDFInfo
- Publication number
- CN1216691A CN1216691A CN98123688A CN98123688A CN1216691A CN 1216691 A CN1216691 A CN 1216691A CN 98123688 A CN98123688 A CN 98123688A CN 98123688 A CN98123688 A CN 98123688A CN 1216691 A CN1216691 A CN 1216691A
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- China
- Prior art keywords
- mentioned
- powder chamber
- filtering material
- solid material
- fibrous
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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
-
- 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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Screw Conveyors (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention relates to a method and a device for applying substances to the fibers of a filter material for smokable articles, wherein fibrous or sheet-like filter materials are dusted with micronized solid substances.
Description
The present invention relates to method and apparatus to the fibre applicator material of the filtering material of smoking product.
For this reason, be coated to (DE 39 04 239 C1) on the fiber with being the fine particle suspension that polycarboxylic acids or its ackd salt of crystalloid particle size less than 50 μ m be suspended in a kind of organic matter liquid medium under normal temperature and the processing temperature.
Another kind of scheme is that the acid anhydrides with two carboxylic acids or polycarboxylic acids is dissolved in the organic solvent, and is coated on the fiber, in case of necessity, and in addition hydrolysis (DE 38 20 089 C2).
The shortcoming of above-mentioned coating suspension or solvent (for example glyceryl triacetate fat) is, when concentration of suspension is high, makes the thickness that becomes, and can not be pumped, Here it is why commonsense method can not on filter bag, coat the reason of a large amount of above-mentioned materials.
The purpose of this invention is to provide a kind of fibre applicator material of the filtering material to smoking product and do not have the method and apparatus of above-mentioned shortcoming.More particularly, even the present invention aims to provide the method and apparatus that the also available simple method and apparatus of a kind of material of high concentration applies.
For realizing above-mentioned purpose of the present invention, the invention provides the method on a kind of fiber of the filtering material that material is coated to smoking product, it is characterized in that, fibrous or laminal filtering material is sprinkled the micronizing solid material.
For realizing above-mentioned purpose of the present invention, the present invention also provides a kind of device of fibre applicator material of the filtering material to smoking product, and it contains:
A) micronizing solid material metering device;
B) solid material that is used for measuring be transported to pneumaticly powder chamber nozzle and
C) the fibrous or laminal filtering material by above-mentioned powder chamber.
The resulting advantage of the present invention is based on the following fact: by a kind of atomizing program, micronized solid material is coated on the fibrous or laminal filtering material with the approaching not form of limited amount, so the coating operation can be carried out under very high concentration, and this is impossible when prior art coating suspension, because this high concentration can reach the effect that can not have up to now.
Test shows: adopt its concentration of micronizing solid material can reach higher 10 times than the concentration that is reached so far.
Therefore, can to improve filter-tip selection reserve capability, and/or under the situation that does not increase draw resistance, change the taste of cigarette, then will to increase resistance inevitably in order reaching when specific local flavor difference adopts fine and close filtering material sometimes.
The above-mentioned favourable operation that material is coated on the filter bag has guaranteed the activity of filter tow because in smoking process, do not burn, oxidation or damage.
Though theoretically to the coating amount without limits,, be conditional in fact to filter-tip draw resistance.This resistance necessarily can not be too big.
According to a most preferred embodiment, adopting particle size is to be 50 μ m to the maximum more specifically to be the solid material of 10 μ m or the homogeneous mixture of solid material to the maximum, thereby makes the filter tip quality after the processing even because this minimum particle can guarantee good distribution.
Have found that best metered mode feeding solid materials distributes solid material metering according to filter-tip productivity ratio and to measure in other words, the result can guarantee always to apply on the unit fiber length for example the material of same amount.
Above-mentioned distribution is measured in other words preferably to combine and by the precision divider of gravity operation with the double auger that the micronizing solid material infeeds the pneumatic operation transportation section by the hopper that sends the micronizing solid material off and on and is carried out.Feedback information by input filter production rate can guarantee that per unit fibre length for example always applies the micronizing solid material of same amount.
The micronizing solid particle depends on pneumatic conveying to pass through a solid nozzle, thereby can transmit these solids by the vacuum that forms in managing, and the result almost can eliminate caking phenomenon fully.
In order to make solid material in air-flow, have best distribution and to decompose any caking, make the solid/circulation of air of pneumatic conveying cross a mixed zone.
Actual be coated with to spread in a powder chamber carry out, described powder chamber is provided with opening on the direction that moves along lamellar or fibrous filtering material, so can not hinder passing through of filtering material.
Glyceryl triacetate fat is coated on the fibrous material in the inlet or the exit of powder chamber, preferably at the porch of powder chamber application of triacetin fat, with the adhesiveness of further raising micronizing solid material on filtering material.
It is adjustable entering the space that powder chamber uses for filtering material, be transferred to the noncontact that guarantees filtering material and carry, and prevent that the solid material that measured from spilling from powder chamber.
In order to make the solid material in the powder chamber apply better, can regulate the state of charge of filtering material by a kind of ionization bar, described ionization bar is made up of a stick electrode and a counterelectrode, they are installed in the porch of powder chamber and powder chamber at a distance of the place of 50～150mm, and perpendicular with the throughput direction of filtering material.Above-mentioned ionization bar makes the surface charging of filtering material, to improve the adhesiveness of micronizing solid particle.
If desired a large amount of especially micronized particles is coated on the filtering material, can be coated with on the two sides of filtering material and spreads.For this reason, two nozzles are installed in powder chamber, from following and above supply micronizing solid particle.
Be coated with when the filtering material that spread the micronizing solid particle leaves powder chamber and be rolled into a kind of filter stick, this filter stick is processed into product filters by usual way.
The outlet of powder chamber best be connected with an air exhauster that can aspirate air by this powder chamber and micronizing solid material (can be connected with powder chamber by dust arrester in case of necessity).
The vacuum of powder chamber outlet is adjustable, and this vacuum can make unnecessary air discharge from the pneumatic delivery area of solid material.The vacuum of powder chamber can be regulated by the valve that is arranged on powder chamber one side.
At production process and metering phase, it is constant that the vacuum of above-mentioned air exhauster preferably keeps, and always has constant goods to be coated on the filter bag with assurance, and prevent that dust from spilling from powder chamber.
Illustrate in greater detail the present invention below in conjunction with accompanying drawing according to embodiment to the device of the fibre applicator material of filter bag, in the accompanying drawing,
Fig. 1 is the schematic diagram of apparatus of the present invention; With
Fig. 2 is the enlarged diagram that has the powder chamber of additional nozzle.
Adopting commonsense method by idler roller 33 (simply illustrating) and guide rail 35 a kind of filter tow importing as felt can be coated with this filter tow 32 spills being coated with of glyceryl triacetate fat and spills in the device 36.
In the above-mentioned exit along filter tow 32 moving directions of spilling device 36 that is coated with, filter tow 32 was walked around idler roller 37 once more before the space that enters between two ionization bar 39 (i.e. an electrode bar and a counterelectrode of being supplied with negative potential by the charge generators 41 that has the limiter of lighting a fire).
Filter tow 32 stitches 43 (see figure 2)s from the inlet that the space between two ionization bar 39 enters powder chamber 34, and these inlet seam 43 moving directions along filter tow 32 open wide, and do not pass through so can not hinder filter tow 32.
The size that enters the space 43 of powder chamber 34 for filter tow 32 can be along regulating perpendicular to the moving direction of filter tow 32, and be transferred to the contactless transmission that both can guarantee filter tow 32, can prevent that again the fluidised form solid matter of powder chamber 34 from spilling.
In powder chamber 34, adopt the method that will describe in detail below a kind of to sprinkle the solid material of micronizing solid material or mixing by the filter tow 32 of 52 pairs of tensions of nozzle of two the shown in Figure 2 above and belows that lay respectively at filter tow 32.
Sides relative at powder chamber 34 with inlet seam 43, be provided with an outlet seam 54, on this outlet seam 54, a calibrating nozzle 44 of producing used for filter tip is installed, but filter tow 32 is merged into a kind of clava that fills up the sucking-off air of powder in nozzle 44.
The filter stick of then said method being made that sprinkles solia particle superscribes tip paper, and be cut into the filter stick of Len req, so that in next production work step, send in the cigarette-making machine, in this cigarette-making machine, above-mentioned filter stick is cut to the rod section of appropriate length, and is connected with cigarette sticks and makes filter-tipped cigarette finished product.
The following describes the preparation of the solid material of micronizing solid material and mixing, described material comprises safety and sensuously good material on the physiology.More particularly, the ackd salt that comprises polycarboxylic acids or polycarboxylic acids for example: the acid fat of citric acid, tartaric acid, butanedioic acid, malic acid, ascorbic acid and above-mentioned organic polycarboxylic acids, list-two-saccharide (for example glucose, cane suger) and flavorant (vanillic aldehyde, menthol etc.).
The pure solid material of micronizing of correct grinding or the particle size of mixed uniformly micronizing solid material are 50 μ m to the maximum, and intermittently infeed in the accurate measurement device 14 by a feed hopper 12 that adapts with working ability, the height of particle layer is detected by MAX/MIN (maximum/minimum) sensor in the meter 14, when its material amount reduces to minimum, sensor starts immediately, make hopper 12 infeed solid material again, in case feed in raw material when reaching maximum, feed just stops automatically.
The solid material that measures by precision meter 14 with the form of free-falling by managing 23 in falling into solid nozzle 26.At this moment, the effect of the compressed air 30 of the no grease that blows out owing to the nozzle ring of solid nozzle 26 begins solid material pneumatically is blown within the pipe 17 that is connected with nozzle 26, and owing to the pipe 17 inner vacuum that form transmit solid material.
For solid material is distributed well, and decompose any caking in air-flow, make solid material/air stream flow through the mixed zone 18 that forms by a pipe that feeds powder chamber 34 vertically downward.
Top at powder chamber 34, a horizontal wide seam nozzle 52 is arranged, and to be coated with the width of filter tow in the inlet that spills device 36 or exit corresponding with glyceryl triacetate fat at least for the width of this nozzle 52 on the direction of motion that perpendicular to the production line direction is filter tow 32.Can (close shown in 56) by vertically upward or downwards and regulate wide seam nozzle 52 and freely regulate distance between nozzle 52 and the filter tow 32 as arrow.
In general,, also can adopt remodeling embodiment shown in Figure 2, promptly below filter tow 32, refill one second wide seam nozzle 52 though adopt single nozzle 52 enough in principle.Solid material/air stream from the pneumatic conveying section is disperseed in the porch of two nozzles, and this decentralization of materials flow is can be freely regulated.
Below filter tow 32, powder chamber 34 diminishes gradually becomes air intake duct 58, and its vacuum can be regulated, so that extract unnecessary air out from the solid material of pneumatic conveying.
Vacuum in the powder chamber 34 can be regulated by the valve 38 that is installed in powder chamber one side.The carrier gas that is full of dust of sucking-off is sent into a light dust arrester 40 that is used for cleaning.The vacuum of this dust arrester 40 or powder chamber 34 is produced by the air exhauster 50 in downstream.With the metering phase of material, it is constant that the vacuum of air exhauster 50 keeps in process of production, guaranteeing that goods evenly and consistently are coated on the filter bag, and prevents that dust from spilling from powder chamber 34.
Charge condition is obtained the best coating state of solid material by ionization bar 39 controls netted filtering fibre bundle sprinkles the micronizing solid material in powder chamber, this solid material adheres on the fiber of the filter tow 32 that scribbles the glyceryl triacetate ester.Open filter tow 32 is rolled into a kind of ring-type filter stick subsequently, and is processed into cigarette filter by common method, and this filter tip method with paper wrapping in next one production work step is connected with cigarette sticks.
The also filter tow of the netted filtering material system of Tou Guoed air that can be above-mentioned, but by 10 pairs in above-mentioned device for example filter paper be coated with and sprinkle the micronizing solid particle and form filter tow.
As another embodiment, glyceryl triacetate fat can be coated with and spill device 36 and be arranged on along the direction of transfer of filter tow 32 and see the exit (yes before filtering material is merged into filter stick) that is in powder chamber 34.
Claims (22)
1. material is coated to the method on the fiber of filtering material of smoking product, it is characterized in that, fibrous or laminal filtering material (32) is sprinkled the micronizing solid material.
2. according to the method for claim 1, it is characterized in that adopt micronized pure or mixed uniformly solid material, its particle size is 50 μ m to the maximum, more specifically is 10 μ m to the maximum.
3. according to the method for claim 1 or 2, it is characterized in that above-mentioned solid material is a weight feed.
4. according to the method for claim 3, it is characterized in that above-mentioned metering is implemented according to filter-tip productivity ratio.
5. according to each method in the claim 1～4, it is characterized in that, the micronizing solid material that measured is introduced powder chamber (34) by pneumatic conveyer (17,18,26), and above-mentioned fibrous or laminal filtering material (32) then is 45 ° angle with the throughput direction of above-mentioned solid material and transmitted above-mentioned powder chamber (34).
6. according to each method in the claim 1～5, it is characterized in that, introduce above-mentioned powder chamber (34), be merged into filter stick then being coated with the filter bag (32) that spilt glyceryl triacetate fat.
7. according to the method for claim 5 or 6, it is characterized in that, in above-mentioned powder chamber (34), be coated with to it and sprinkle the micronizing solid material of stating from the above and below of above-mentioned fibrous or laminal filtering material (32).
8. according to each method in the claim 5～7, it is characterized in that above-mentioned fibrous or lamellar filtering material is seeing that along its throughput direction the porch that is positioned at above-mentioned powder chamber (34) is charged by ionization.
9. device to the fibre applicator material of the filtering material of smoking product, it contains:
A) micronizing solid material metering device (12,14,16);
B) solid material that is used for measuring be transported to pneumaticly powder chamber (34) nozzle (26) and
C) the fibrous or laminal filtering material (32) by above-mentioned powder chamber (34).
10. according to the device of claim 9, it is characterized in that above-mentioned fibrous or lamellar filtering material (32) is approximately perpendicular to the pneumatic throughput direction of above-mentioned micronizing solid material by the landline of above-mentioned powder chamber (34).
11. the device according to claim 9 or 10 is characterized in that, above-mentioned meter contains a feed hopper (12) and a precision meter (14,16) of sending the micronizing solid material off and on.
12. the device according to claim 11 is characterized in that, the above-mentioned precision meter (14,16) by the gravity operation contains one with the double auger (16) of above-mentioned micronizing solid mass transport to the transportation section of pneumatic operation.
13. the device according to claim 11 or 12 is characterized in that, above-mentioned precision meter (14,16) be electrically connected with filter manufacturing machine, therefore filter-tip productivity ratio can be used as the values for actual speed of above-mentioned precision meter (14,16), and as the desired value of its control.
14., it is characterized in that above-mentioned powder chamber (34) is provided with opening on the moving direction of above-mentioned fibrous or lamellar filtering material (32) according to each device in the claim 9～13.
15., it is characterized in that glyceryl triacetate fat is coated with and spills device (36) is arranged on above-mentioned powder chamber (34) along the above-mentioned throughput direction of above-mentioned fibrous or lamellar filtering material (32) front or back according to each device in the claim 9～14.
16. according to each device in the claim 9～15, it is characterized in that, the gap (43) of introducing in the above-mentioned powder chamber (34) for above-mentioned fibrous or laminal filtering material (32) is adjustable, therefore, can guarantee the non-contact transmission of above-mentioned filtering material (32) and prevent that above-mentioned fluidized solids material from spilling.
17. according to each device in the claim 9～16, it is characterized in that, a nozzle that is used for above-mentioned fibrous or lamellar filtering material (32) is rolled into filter stick be installed in the exit of above-mentioned powder chamber (34).
18. according to each device in the claim 9～17, it is characterized in that, a plurality of ionization bar (39) be set in the porch along above-mentioned filtering material (32) throughput direction of above-mentioned powder chamber (34).
19., it is characterized in that above-mentioned powder chamber (34) contains a valve (38) that is used to regulate the vacuum in this powder chamber (34) according to each device in the claim 9～18.
20., it is characterized in that having a dust arrester (40) to be connected with above-mentioned powder chamber (34) according to each device in the claim 9～19.
21., it is characterized in that having one to be used to make the air exhauster (50) that forms above-mentioned vacuum in the above-mentioned powder chamber (34) to be connected according to each device in the claim 9～20 with above-mentioned powder chamber (34).
22. the device according to claim 21 is characterized in that, above-mentioned air exhauster (50) suction is by the air and the micronizing solid material of above-mentioned powder chamber (34) and above-mentioned dust arrester (40).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19748072.1 | 1997-10-30 | ||
| DE19748072A DE19748072A1 (en) | 1997-10-30 | 1997-10-30 | Method and device for applying substances to a filter material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1216691A true CN1216691A (en) | 1999-05-19 |
| CN1112140C CN1112140C (en) | 2003-06-25 |
Family
ID=7847176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98123688A Expired - Fee Related CN1112140C (en) | 1997-10-30 | 1998-10-30 | Method and device for applying substances to filter material |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0913100B1 (en) |
| JP (1) | JP3037937B2 (en) |
| KR (1) | KR100335469B1 (en) |
| CN (1) | CN1112140C (en) |
| AT (1) | ATE255337T1 (en) |
| BR (1) | BR9804311A (en) |
| CA (1) | CA2249816C (en) |
| DE (2) | DE19748072A1 (en) |
| ES (1) | ES2210641T3 (en) |
| HK (1) | HK1019187A1 (en) |
| HU (1) | HUP9802498A3 (en) |
| MX (1) | MXPA98008941A (en) |
| PL (1) | PL329434A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217799A (en) * | 2011-05-18 | 2011-10-19 | 滁州卷烟材料厂 | Cigarette filter containing vitamin micro-particles and production method thereof |
| TWI415577B (en) * | 2008-06-25 | 2013-11-21 | Japan Tobacco Inc | Smoking article |
| CN103653243A (en) * | 2013-12-04 | 2014-03-26 | 上海烟草集团有限责任公司 | Multifunctional material-addition filter stick forming machine |
| CN104812257A (en) * | 2012-11-29 | 2015-07-29 | 菲利普莫里斯生产公司 | Method and apparatus for introducing a metered amount of particles into a continuous flow of material |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006027597A1 (en) * | 2006-06-13 | 2007-12-27 | Hauni Maschinenbau Aktiengesellschaft | Method for operating a stranding machine and stranding machine |
| US8613284B2 (en) | 2008-05-21 | 2013-12-24 | R.J. Reynolds Tobacco Company | Cigarette filter comprising a degradable fiber |
| US8375958B2 (en) | 2008-05-21 | 2013-02-19 | R.J. Reynolds Tobacco Company | Cigarette filter comprising a carbonaceous fiber |
| US8511319B2 (en) | 2008-11-20 | 2013-08-20 | R. J. Reynolds Tobacco Company | Adsorbent material impregnated with metal oxide component |
| US8119555B2 (en) | 2008-11-20 | 2012-02-21 | R. J. Reynolds Tobacco Company | Carbonaceous material having modified pore structure |
| DE102009022759A1 (en) * | 2009-05-26 | 2010-12-02 | Hauni Maschinenbau Ag | Preparation of a filter material strip of the tobacco processing industry |
| WO2011070639A1 (en) * | 2009-12-07 | 2011-06-16 | 日本たばこ産業株式会社 | Powder adding device and adding method thereof |
| US20110271968A1 (en) | 2010-05-07 | 2011-11-10 | Carolyn Rierson Carpenter | Filtered Cigarette With Modifiable Sensory Characteristics |
| KR101288805B1 (en) * | 2010-07-16 | 2013-07-23 | 주식회사 케이티앤지 | Cigarette to add solid type menthol and Method to add thereof, Cigarette case |
| US8720450B2 (en) | 2010-07-30 | 2014-05-13 | R.J. Reynolds Tobacco Company | Filter element comprising multifunctional fibrous smoke-altering material |
| DE102011117614A1 (en) * | 2011-11-04 | 2013-05-08 | Björn O. Sörensen | Cigarette filter with organic acids |
| DE102015108252A1 (en) | 2015-05-26 | 2016-12-01 | Hauni Maschinenbau Gmbh | Method and device for producing a multi-segment filter |
| US10512286B2 (en) | 2017-10-19 | 2019-12-24 | Rai Strategic Holdings, Inc. | Colorimetric aerosol and gas detection for aerosol delivery device |
| DE102022116185A1 (en) | 2022-06-29 | 2024-01-04 | Körber Technologies Gmbh | Machine and process in the tobacco processing industry for producing a rod or paper filter and use of the machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3017309A (en) * | 1957-02-21 | 1962-01-16 | Eastman Kodak Co | Method for the manufacture of filters composed of cellulose acetate |
| CH372235A (en) * | 1959-07-06 | 1963-09-30 | Ver Tabakfabriken Ag | Filters for smokers' goods with at least two different sections arranged one behind the other as well as a method for its production and a device for carrying out the method |
| US3390039A (en) * | 1964-10-09 | 1968-06-25 | Eastman Kodak Co | Method and apparatus for making additive filters |
| JPS60216843A (en) * | 1984-04-03 | 1985-10-30 | Patent Puromooto Center:Kk | Catalytic filter for oxidizing reducing gas |
| DE3820089A1 (en) | 1988-06-13 | 1989-12-14 | Bat Cigarettenfab Gmbh | METHOD FOR IMPREGNATING FIBERS OF A TOBACCO FUEL FILTER WITH DI- OR POLYCARBONIC ACIDS OR. ANHYDRIDES THERE |
| DE3904239C1 (en) | 1989-02-13 | 1990-05-17 | B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De | |
| JP2946236B2 (en) * | 1990-10-24 | 1999-09-06 | 株式会社三條機械製作所 | Method and apparatus for manufacturing cigarette filter rod |
| FR2696080B1 (en) * | 1992-09-30 | 1994-12-23 | Jesus Covarrubias | Cigarette filter for administration of taurine by inhalation. |
-
1997
- 1997-10-30 DE DE19748072A patent/DE19748072A1/en not_active Withdrawn
-
1998
- 1998-10-07 EP EP98118905A patent/EP0913100B1/en not_active Expired - Lifetime
- 1998-10-07 DE DE59810322T patent/DE59810322D1/en not_active Expired - Fee Related
- 1998-10-07 AT AT98118905T patent/ATE255337T1/en not_active IP Right Cessation
- 1998-10-07 ES ES98118905T patent/ES2210641T3/en not_active Expired - Lifetime
- 1998-10-08 CA CA002249816A patent/CA2249816C/en not_active Expired - Fee Related
- 1998-10-28 MX MXPA98008941A patent/MXPA98008941A/en not_active IP Right Cessation
- 1998-10-29 BR BR9804311-0A patent/BR9804311A/en not_active IP Right Cessation
- 1998-10-29 HU HU9802498A patent/HUP9802498A3/en unknown
- 1998-10-29 KR KR1019980045794A patent/KR100335469B1/en not_active IP Right Cessation
- 1998-10-30 PL PL98329434A patent/PL329434A1/en unknown
- 1998-10-30 CN CN98123688A patent/CN1112140C/en not_active Expired - Fee Related
- 1998-10-30 JP JP10311492A patent/JP3037937B2/en not_active Expired - Fee Related
-
1999
- 1999-10-04 HK HK99104292A patent/HK1019187A1/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI415577B (en) * | 2008-06-25 | 2013-11-21 | Japan Tobacco Inc | Smoking article |
| CN102217799A (en) * | 2011-05-18 | 2011-10-19 | 滁州卷烟材料厂 | Cigarette filter containing vitamin micro-particles and production method thereof |
| CN104812257A (en) * | 2012-11-29 | 2015-07-29 | 菲利普莫里斯生产公司 | Method and apparatus for introducing a metered amount of particles into a continuous flow of material |
| CN103653243A (en) * | 2013-12-04 | 2014-03-26 | 上海烟草集团有限责任公司 | Multifunctional material-addition filter stick forming machine |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE255337T1 (en) | 2003-12-15 |
| BR9804311A (en) | 2000-03-08 |
| MXPA98008941A (en) | 2002-03-14 |
| KR100335469B1 (en) | 2002-11-30 |
| DE59810322D1 (en) | 2004-01-15 |
| DE19748072A1 (en) | 1999-05-12 |
| JPH11239472A (en) | 1999-09-07 |
| EP0913100A3 (en) | 2000-08-23 |
| CN1112140C (en) | 2003-06-25 |
| EP0913100B1 (en) | 2003-12-03 |
| HUP9802498A3 (en) | 2000-07-28 |
| EP0913100A2 (en) | 1999-05-06 |
| CA2249816C (en) | 2007-06-26 |
| PL329434A1 (en) | 1999-05-10 |
| JP3037937B2 (en) | 2000-05-08 |
| ES2210641T3 (en) | 2004-07-01 |
| CA2249816A1 (en) | 1999-04-30 |
| HU9802498D0 (en) | 1998-12-28 |
| HUP9802498A2 (en) | 1999-06-28 |
| HK1019187A1 (en) | 2000-01-28 |
| KR19990037495A (en) | 1999-05-25 |
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