CN1553777A - Cigarette filter - Google Patents
Cigarette filter Download PDFInfo
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- CN1553777A CN1553777A CNA028176693A CN02817669A CN1553777A CN 1553777 A CN1553777 A CN 1553777A CN A028176693 A CNA028176693 A CN A028176693A CN 02817669 A CN02817669 A CN 02817669A CN 1553777 A CN1553777 A CN 1553777A
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- cigarette filter
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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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
- A24D3/163—Carbon
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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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/12—Use of materials for tobacco smoke filters of ion exchange materials
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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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
A cigarette filter that includes a multiple section filter which reduces the level of predetermined smoke constituents. The filter (130) consists of a fibrous filter plug (132) located at the mouth-end of the cigarette, a section (136) containing a selective adsorbent material, and a section (134) containing a general adsorbent material. The selective adsorbent material, such as a phenol-formaldehyde resin matrix surface-functionalized with mainly primary and secondary amine functional groups, removes specific smoke constituents from the tobacco smoke. The general adsorbent material, such as activated charcoal, is preferably capable of adsorbing a range of chemical compounds without a high degree of specificity. Structurally, the fibrous filter plug, the selective adsorbent section, and the general adsorbent section are co-axially aligned in tandem.
Description
The cross reference of related application
The application requires the priority of following application: U.S.Provisional ApplicationSer.No.60/309,338, filed August1,2001, U.S.Provisonal ApplicationSer.No.60/309,435, filed August 2001, U.S.Patent ApplicationSer.No.10/011,841, filed October30,2001, the full content of above-mentioned application is incorporated herein, and is for reference.
Background of the present invention
The present invention relates to a kind of cigarette filter, it contains a kind of smoke components adsorbent, when combining with a kind of carbon back filtering material, shows the reduction that the smoke vapor components is collaborative.
Cigarette comprises tobacco rod or post, produces specific and a steam mutually when it burns.Before about 70 years, filter tip begins to be engaged to a pipe tobacco post.Except other thing, filter removed various smoke components.Filter tip is made by fiber or fibrous material, such as cellulose acetate tow or paper, removes the particle phase of pipe tobacco smog by mechanical mode.Yet fibrous material can not be removed the component of volatilization effectively, such as, acetaldehyde, hydrogen cyanide and hydrogen sulfide, they form gas phase.Typically, a kind of adsorbent combines with fibrous material, to improve the removing of gaseous component.For example, cigarette filter has the activated carbon of adding, the mineral of porosity, and such as sepiolite, silica dioxide gel, cationic ion-exchange resin and anion exchange resin.
Charcoal has high per surface area, and is a kind of stronger adsorbent of forming for the gas phase of cigarette smoke.When the mixture that uses metal oxide applied, charcoal was effective to removing sour gas especially.
Sepiolite has a big adsorption area, and has the strong adsorption affinity of charged material, but the absorption compatibility lower to non-polarised material.Silica dioxide gel is considered to the adsorbent for the weak maintenance of the gas phase composition of pipe tobacco smog usually.Though silica dioxide gel easily absorbs acetaldehyde and hydrogen cyanide, this component is also easily discharged by silica dioxide gel.Cationic ion-exchange resin has been proposed to be used in the removing of nicotine.Anion exchange resin has been proposed to be used in the removing of nicotinic acid, but strongly basic anionite is to the not effect of gas phase acetaldehyde of smog.The weak-base anion-exchange resin of porosity structure is fit to be used in the removing of nicotinic acid and acetaldehyde, but their effect reduces as the mineral of carbon and porosity when smoking.
Two or more adsorbents can use in cigarette filter in combination.For example, United States Patent (USP) U.S.Patent 2,815,760 disclose the use of a kind of ion exchange material and some materials, harmful, non-alkalescence, the non-acid component chemical reaction of it and smog forming non-volatile compound, thereby remains on the latter in the filter tip.Yet above-mentioned additive fails to produce these smog phase components of removing of satisfied selection, such as, smog acetaldehyde, especially acetaldehyde and methacrylaldehyde.United States Patent (USP) U.S.Patent 4,300,577 discloses a kind of weak adsorbent that keeps and is used in gaseous component, and it mainly is that second constituent element of first amino functional group mixes with having, and is used for removing the gaseous component of pipe tobacco smog, comprises acetaldehyde and hydrogen cyanide.But the filter tip of patent ' 577 does not demonstrate appropriate users approval property or commercial feasibility.
General introduction of the present invention
The present invention relates to a kind of cigarette filter, comprise the filter tip of a multistage, it reduces the level of predetermined smoke components.Filter tip comprises the filtration stopper of a fiber, is positioned at the mouth end of cigarette, one section absorbing material that contains a kind of selection, and one section contain a kind of general absorbing material.
Filtering stopper can be filtration stopper known in any technology, such as, acetate tow.General sorbing material is preferably selected the material from one group of high surfaces area, such as, activated charcoal, it can absorb a series of compound, and does not have the characteristic of height.The sorbing material of selecting is to select according to the specific smoke components that target is removed.Best, the sorbing material of selection is by one group of function of surface Choice of Resin, and wherein every kind of resin comprises a kind of carrier of inertia in fact, has surface area greater than about 35m
2/ g.In one embodiment of the invention, the sorbing material of selection is a kind of phenolic resin as matrix resin, and it is surface-functionalized mainly to be to use amino functional first and secondary to roll into a ball.
Structurally, the sorbing material of selection can be positioned between the sorbent segment and filtration stopper of selection in abutting connection with tobacco rod and general sorbing material.The scheme that replaces is, general sorbing material can be positioned at sorbing material in abutting connection with tobacco rod and selection in general sorbent segment with filter between the stopper.Preliminary data point out that preceding a kind of orientation produces a collaborative effect that reduces smoke components with respect to a kind of orientation in back.Moreover the adsorbent of selection and general adsorbent can be dispersed in a kind of traditional filtration stopper material, and such as cellulose acetate, perhaps adsorbent can be packaged in filtering stopper material a liner or thin layer section.
Brief description of drawings
Fig. 1 is the perspective view of a cigarette with filter tip of prior art;
Fig. 2 is filter-tip perspective view of cigarette made in accordance with the present invention, and wherein adsorbent is to be dispersed in whole a kind of filtration stopper material, and general sorbent segment is positioned between the sorbent segment of filtering stopper and selection;
Fig. 3 is filter-tip perspective view of cigarette made in accordance with the present invention, and wherein adsorbent is to be dispersed in whole a kind of filtration stopper material, and the sorbent segment of selecting is positioned at and filters between stopper and the general sorbent segment;
Fig. 4 is filter-tip perspective view of cigarette made in accordance with the present invention, and wherein adsorbent package is a liner in filtering stopper material;
Fig. 5 is the drawing in side sectional elevation of one embodiment of the present of invention, and has and filter stopper and be arranged between the sorbent segment of general sorbent segment and selection;
Fig. 6 is the drawing in side sectional elevation of one embodiment of the present of invention, and has the end of filtration stopper in abutting connection with tobacco rod;
Fig. 7 is the drawing in side sectional elevation of one embodiment of the present of invention, and has adsorbent with one of fiber filter material independent length segmentation; And
Fig. 8 is the drawing in side sectional elevation of one embodiment of the present of invention, does not filter the stopper section.
The detailed description of preferred embodiment
Cigarette filter of the present invention comprises the filter tip of a multistage, and it reduces the level of predetermined smoke components.Filter tip comprises the filtration stopper of a fiber, is positioned at the mouth end of cigarette, one section sorbing material that contains a kind of selection, and one section contain a kind of general sorbing material.
As shown in Figure 1 and known by technology, a typical cigarette with filter tip 10 has a filter tip 30, is connected to a tobacco rod 20.Tobacco rod 20 comprises a loose mixture that contains pipe tobacco 22, be wrapped in the cigarette paper 24, and filter tip 30 comprises that a filtration stopper 32 is wrapped in the stopper parcel 34.An end paper 36 engages filter tip 30 to tobacco rod 20.
In the present invention, as shown in Figure 2, a cigarette 110 has the filter tip 130 of a multistage, is connected to tobacco rod 20.Filter tip 130 comprises that a filtration stopper contains general adsorbent 134 and one section adsorbent 136 that contains selection for 132, one sections.Filtration stopper 132 is first end or the mouth ends 131 in abutting connection with filter tip 130.Adsorbent 136 liners of selecting are second end or the tobacco rod end 137 in abutting connection with filter tip 130.The liner of general adsorbent 134 is positioned between adsorbent 136 liners that filter stopper 132 and select.
General sorbent segment 134 comprises a kind of general sorbing material 144, is dispersed in the whole filtering plug material 142, than a kind of " dual-dalmatian " filter tip as well known in techniques.General sorbing material 144 is preferably selected by the material of one group of high surfaces area, and it can adsorb smoke components, and does not have the characteristic of height.For example, general adsorbent can be selected from active charcoal, active cocoanut shell carbon, active coal-based carbon, zeolite, silica dioxide gel, sepiolite, aluminium oxide or their combination, and the mineral sill charcoal of making by semianthractie, and (supplier is CalgonCarbon than cocoanut shell carbon about 50% to have density, Pittsburgh, PA), Armbersorb 572 or Ambersorb 563 are (by the resin of the styrene-carbon containing that the divinylbenzene pyrolysis is derived of sulfonation, supplier is Rohm andHass, 5000 Richmond street, Philadelphia, PA 19137), has similar particle size, surface area, the material of other of bonding affinity, or their combination.In order more to strengthen the effect of general adsorbent, the compound of metal oxide or other Metal Substrate can join in the general sorbent segment.
The sorbent segment of selecting 136 comprises a kind of sorbing material 146 of selection, is dispersed in the whole filtration stopper material 142, such as, known a kind of " dual-dalmatian " filter tip in the technology.The sorbent material of selecting 146 is preferably selected the compound of predetermined kind according to the characteristic of material 146, for example, the sorbent material of selecting 146 can be a kind of ion exchange resin, (supplier is Rohm and Hass.5000 RichmondStreet such as Duolite A7, Philadelphia, PA 19137) or material with similar functional group and bonding affinity.Duolite A7 has phenolic resin as matrix resin, and be to use first surface-functionalized with amine groups secondary, thereby strengthen these resins to the acetaldehyde found in the pipe tobacco smog and the characterization of adsorption of hydrogen cyanide.
Moreover, the selection of the sorbing material of selecting 146 must consider that but the contact conditions between pipe tobacco smog and the sorbing material 146 depends on a series of changing factor, comprise that the smoker drew smog by filter-tip intensity when cigarette was inhaled, and before each aerosol spraying tobacco rod consumption what.Therefore, advantageously, the adsorbent 146 of selection has a surface area greater than about 35m
2/ g, thus minimum diffusional resistance obtained, and the surface area POF can easily reach.The material that has bigger surface area also demonstrates more unconspicuous performance and descends, and as a kind of plasticizer of the surface-coated of fruit part, it can occur in adsorbent 146 and be dispersed in when filtering stopper 142.
When cigarette was consumed, pipe tobacco smog was sprayed by filter tip 130 by the smoker.Smog begins to advance by the sorbent segment of selecting 136, and the smoke components of target is attracted on the surface of sorbing material 146 of selection herein, and the particulate matter in the smog is filtered stopper material 142 and keeps.Remaining smog advances subsequently by general sorbent segment 134, and other smoke components is adsorbed material 144 maintenances herein, and additional particulate matter is filtered stopper material 142 maintenances.At last, remaining smog advances subsequently by filtering stopper 132, and Fu Jia particulate matter can be eliminated herein.Filtered smog sends the smoker subsequently to.
In the embodiment of first demonstration of the present invention, as shown in Figure 2, the filter tip 110 of multistage is made for has a filtration stopper 132, make by acetate tow, the about 7mm of length, and has a general sorbent segment 134, the cocoanut shell carbon 144 that comprises the 40mg activity, be dispersed in the whole acetate tow 142, cut-out is with one section 134 of the about 10mm of acquisition length, wherein acetate tow is handled with a kind of plasticizer, and sorbent segment 136 with a selection, comprise that 40mg Duolite A7 is dispersed in the whole acetate tow 142, cut-out is with one section 136 of the about 10mm of acquisition length, and wherein acetate tow is handled with a kind of plasticizer.When tobacco rod is during with a normal puff/rest circulating combustion, discharge the analysis showed that of flue gas at terminal 131 places of mouth of cigarette 110, with the cigarette that only uses similar resin filter mouth relatively, reduced the level of following compounds statistically significantly: hydrogen cyanide, furans, propionic aldehyde, acetone, methyl ethyl ketone/butyraldehyde, hydrogen sulfide, 1,3 butadiene, 2 methyl propanal, isoprene, styrene, pyridine, toluene and benzene.When tobacco rod is during with a normal puff/rest circulating combustion, discharge the analysis showed that of flue gas at terminal 131 places of mouth of cigarette 110, with the cigarette with filter tip that only uses charcoal relatively, reduced the level of following compounds statistically significantly: pyridine, hydrogen cyanide, hydrogen sulfide, styrene, 2 methyl propanal, benzene, propionic aldehyde, furans, isoprene, 1,3 butadiene, crotonaldehyde, acetone, acrylonitrile, acetaldehyde, toluene, carbon disulfide, methyl ethyl ketone/butyraldehyde, propionic aldehyde, acetonitrile and methyl alcohol.
As shown in Figure 2, the filter tip 130 of multistage has the stopper 132 of filtration, and in abutting connection with mouth end 131, the adsorption section 136 of selection is in abutting connection with tobacco rod end 137, and general sorbent segment 134 is positioned between the sorbent segment 136 of filtering stopper 132 and selecting.
In the embodiment of a replacement, as shown in Figure 3, cigarette 210 has the filter tip 230 of a multistage, wherein filter stopper 132 and be positioned at mouth end 131, general sorbent segment 134 is in abutting connection with tobacco rod end 137, and the sorbent segment of selecting 136 is interposed in and filters between stopper 132 and the general sorbent segment 134.In this embodiment, when normal puff, smog at first advances by general sorbent segment 134, the sorbent segment 136 by selecting, and the final filtration stopper 132 that passes through subsequently.Moreover, the filter tip 230 of multistage be in fact with the filter tip 130 identical (Fig. 2) of embodiment of first demonstration, its difference be general sorbent segment 134 in abutting connection with tobacco rod 20, and the sorbent segment of selecting 136 is interposed in and filters between stopper 132 and the general sorbent segment 134.When tobacco rod is during with a normal puff/rest circulating combustion, the flue gas analysis of discharging terminal 131 places of mouth (Fig. 3) of cigarette 210 shows, with the cigarette that only uses similar resin filter mouth relatively, reduced the level of following compounds statistically significantly: propionic aldehyde, acetone, methyl ethyl ketone/butyraldehyde, crotonaldehyde, hydrogen sulfide, 2 methyl propanal, pyridine, methacrylaldehyde, toluene, acetaldehyde, acrylonitrile, methyl alcohol and benzene.When tobacco rod is during with a normal puff/rest circulating combustion, the flue gas analysis of discharging terminal 131 places of mouth of cigarette 210 shows, with the cigarette that only uses the charcoal filtering mouth relatively, reduced the level of following compounds statistically significantly: pyridine, hydrogen cyanide, benzene, propionitrile, crotonaldehyde, acetone, acrylonitrile, acetaldehyde, toluene, carbon disulfide, methyl ethyl ketone/butyraldehyde, propionic aldehyde, acetonitrile and methyl alcohol.
As shown in another embodiment shown in Figure 4, in the multi-segment filter 330 of cigarette 310, adsorbent 144, the 146th, be packaged in the thin layer section of the adsorbent 346 of the thin layer section of general adsorbent 344 and selection and filter in the stopper material, in the present embodiment, the adsorbent of layer packing disperses adsorbent to be exposed to less plasticizer than bundle, and keeps bigger surface area, is used for reacting to each other with smoke components.Moreover as shown in FIG. 7, the filter tip 630 of a multistage of a cigarette 610 comprises general adsorbent 344 and the adsorbent of selecting 346, is dispersed in the single section of an independent length of fiber filter material 342.
The advantage of the embodiment 110 of Fig. 2 is that smog advanced by the sorbing material of selecting 146 before advancing by general adsorbent 144.The sorbing material that allows like this to select was removed some specific smoke components before general sorbing material is exposed to smog, thereby made general adsorbent 144 more effectively remove remaining smoke components.Therefore, arrange relatively the effect of the cooperation of adsorbent in finding to arrange here for cellulose acetate/general adsorbent/specific adsorbent with the adsorbent of the adsorbent of cellulose acetate/specific/general.
As shown in Fig. 5 and 6, respectively the filter tip 430 and 530 of cigarette 410 and 510 multistage be arranged on general sorbent segment 134 and the sorbent segment 136 selected between (Fig. 5), and in abutting connection with the end (Fig. 6) of tobacco rod 20.In Fig. 5, the sorbent segment 136 of selection is positioned at the mouth end of filter tip 430, and in Fig. 6, general sorbent segment 134 is positioned at the mouth end of filter tip 530.Moreover as shown in FIG. 8, the filter tip 730 of a multistage of cigarette 710 only comprises the sorbent segment 136 of a general sorbent segment 134 and a selection.
Following examples is the representative of removing the embodiment of performance preparation according to the smoke components of the present invention and these embodiment.The proposition of these embodiment is the purpose in order to demonstrate wittingly only, and is not wittingly in order to limit its scope.
Example 1: the cigarette 110 of filter tip 130 that has a multistage is by preparation shown in Figure 2, one of them filters the manufacturing of stopper 132 usefulness acetate tow, and the about 7mm of length, a general sorbent segment 134 contains the cocoanut shell charcoal 144 of the 40mg activity of having an appointment, be dispersed in the acetate tow 142 of whole plasticizer processing, cutting is with one section 134 of the about 10mm of acquisition length, and the sorbent segment 136 of a selection, contain the 40mg Duolite A7 that has an appointment, be dispersed in the acetate tow of whole plasticizer processing, cutting is with one section of the about 10mm of acquisition length.Filter tip is connected to tobacco rod, has the about 56.5mm of length, and contains the typical non-menthol cigarette compound of the 617mg that has an appointment (non-menthol cigarette blend) and be wrapped in the 50Coresta cigarette paper that has about 1.8% citrate.This cigarette is supplied with about 10.3mg tar/every cigarette.
Example 2: the cigarette 210 of filter tip 230 that has a multistage is by preparation shown in Figure 3, wherein filter stopper 132, general sorbent segment 134 and the sorbent segment of selecting 136 are and the filtration stopper 132 of example 1 that general sorbent segment 134 and the sorbent segment of selecting 136 are identical in fact.Filter tip is connected to a tobacco rod, has the about 56.5mm of length and contains the typical non-menthol cigarette compound of 617mg, is wrapped in the 50 Coresta cigarette paper that have about 1.8% citrate.This cigarette is supplied with about 10.0mg tar/every cigarette.
Example 3: according to the cigarette that example 1 is prepared, its difference is that about 20mg Duolite A7 uses in the sorbent segment of selecting 136, to replace 40mg.This cigarette is supplied with about 10.2mg tar/every cigarette.
Example 4: according to the cigarette that example 2 is prepared, its difference is that about 20mg Duolite A7 uses in the sorbent segment of selecting 136, to replace 40mg.This cigarette is supplied with about 10.9mg tar/every cigarette.
Example 5: according to the cigarette that example 1 is prepared, its difference is that about 60mg Duolite A7 uses in the sorbent segment of selecting 136, to replace 40mg.This cigarette is supplied with about 10.0mg tar/every cigarette.
Example 6: according to the cigarette that example 2 is prepared, its difference is that about 60mg Duolite A7 uses in the sorbent segment of selecting 136, to replace 40mg.This cigarette is supplied with about 10.3mg tar/every cigarette.
Example 7: according to the cigarette that example 1 is prepared, its difference is that the mineral sill charcoal that about 69mg is made by semianthractie uses in general sorbent segment 136, to replace the cocoanut shell charcoal of 40mg activity.This cigarette is supplied with about 10.1mg tar/every cigarette.
Example 8: according to the cigarette that example 2 is prepared, its difference is that the mineral sill charcoal that about 69mg is made by semianthractie uses in general sorbent segment 136, to replace 40mg cocoanut shell charcoal.This cigarette is supplied with about 10.2mg tar/every cigarette.
Example 9: the cigarette of implementing the representative of 1-6 uses the smoking of a Borgwalt RM-20 smoking machine to docking the about 4mm of length by end.Following program is to be listed by FTC, discharges the smoke components of the filter end of every cigarette and advances by a Cambridge filter pad liner, and vapour phase is collected in the sack, and analyzes with GC/MC.These data normally are about 10mg tar/every cigarette.
Average vapour phase output capacity (every cigarette of mg/)
| Press the cigarette that example is prepared | 1??????2 | ?3????4 | ?5????6 |
| Every cigarette of mg Dudite/ | 40 | ????20 | ????60 |
| The order of filter tip section | CA/GA????CA/SA ?SA??????????GA | ?CA/GA?CA/SA ?SA?????GA | ?CA/GA?CA/SA ?SA?????GA |
| Acetaldehyde | 330.9???333.7 | ?380.7??346.2 | ?320.3??310.9 |
| Isoprene | 231.4???240.4 | ?252.1??246.1 | ?227.4??227.2 |
| Acetone | 144.1???163.5 | ?156.0??160.5 | ?148.0??151.4 |
| Methyl alcohol | 104.9???127.6 | ?114.5??142.8 | ?111.7??98.5 |
| Acetonitrile | 59.8????72.0 | ?67.0???77.4 | ?62.8???57.3 |
| Methacrylaldehyde | 29.6????31.4 | ?33.6???32.2 | ?28.5???29.9 |
| Methyl ethyl ketone | 29.3????35.9 | ?30.9???38.5 | ?30.1???31.6 |
| Formaldehyde | 23.5????25.8 | ?25.5???25.0 | ?22.1???24.5 |
| Propionic aldehyde | 25.7????27.4 | ?29.3???28.5 | ?25.3???25.0 |
| 1,3 butadiene | 25.5????25.9 | ?27.5???25.5 | ?25.8???25.0 |
| Toluene | 22.5????25.3 | ?22.0???27.5 | ?23.9???22.5 |
| Benzene | 20.6????23.6 | ?21.6???24.1 | ?21.1???21.4 |
| Acetonitrile | 16.8????17.7 | ?18.0???18.0 | ?17.0???16.5 |
| Furans | 16.2????17.0 | ?17.3???16.4 | ?16.4???16.2 |
| Hydrogen cyanide | 15.1????16.4 | ?20.7???19.6 | ?13.6???14.8 |
| Hydrogen sulfide | 12.9????13.0 | ?14.0???12.9 | ?13.1???12.7 |
| Acrylonitrile | 12.9????15.0 | ?13.5???15.9 | ?13.6???12.8 |
| 2 methyl propanal | 6.4?????6.7 | ?7.0????7.0 | ?6.6????6.4 |
| Crotonaldehyde | 5.1?????5.9 | ?5.5????6.3 | ?5.3????5.0 |
| Carbon disulfide | 2.5?????2.6 | ?2.7????2.6 | ?2.6????2.5 |
| Styrene | 2.0?????1.8 | ?2.2????1.9 | ?2.1????1.7 |
| Pyridine | 1.9?????1.9 | ?1.9????1.8 | ?1.9????1.8 |
The CA=cellulose acetate filters stopper; The sorbent segment that GA=is general; The sorbent segment that SA=selects.
Example 10: the cigarette of example 7 and 8 representative uses the smoking of a Borgwalt RM-20 smoking machine to docking the about 4mm of length by end.Following program is to be listed by FTC, discharges the smoke components of the filter end of every cigarette and advances by a Cambridge filter Pad liner, and vapour phase is collected in the sack, and analyzes with GC/MC.These data normally are about 10mg tar/every cigarette.
Average every cigarette of vapour phase output capacity Mg/
| Press the cigarette that example is prepared | ????7 | ????8 |
| Every cigarette of mg Duolite/ | ????????????40 | |
| The order of filter tip section | ????CA/GA ????SA | ????CA/SA ?????GA |
| Acetaldehyde | ????343.4 | ????364.2 |
| Isoprene | ????225.0 | ????268.9 |
| Acetone | ????138.6 | ????162.3 |
| Methyl alcohol | ????95.1 | ????134.7 |
| Acetonitrile | ????61.4 | ????84.6 |
| Methacrylaldehyde | ????9.8 | ????35.3 |
| Methyl ethyl ketone | ????28.3 | ????39.8 |
| Propionic aldehyde | ????26.4 | ????30.2 |
| 1,3 butadiene | ????25.4 | ????27.7 |
| Toluene | ????18.7 | ????24.2 |
| Benzene | ????21.3 | ????27.3 |
| Acrylonitrile | ????7.5 | ????9.0 |
| Furans | ????17.0 | ????18.4 |
| Hydrogen cyanide | ????16.7 | ????19.5 |
| Hydrogen sulfide | ????14.7 | ????14.1 |
| Acrylonitrile | ????15.7 | ????20.3 |
| 2 methyl propanal | ????13.0 | ????14.8 |
| Crotonaldehyde | ????3.3 | ????5.1 |
| Carbon disulfide | ????2.8 | ????2.8 |
| Styrene | ????1.8 | ????2.1 |
| Pyridine | ????1.3 | ????1.4 |
The CA=cellulose acetate filters stopper; The sorbent segment that GA=is general; The sorbent segment that SA=selects
See by the viewpoint of producing, disperse the sorbent material 146 of selection and general sorbing material 144 in whole filter tow 142, to have some advantages, especially when adsorbent 144,146 is dispersed in the filter tow 142, adsorbent is easy to processing during for loose granule than them.Yet, when adsorbent 144,146th, when being dispersed in the filter tow 142, a danger is arranged here, use any plasticizer on bundle 142 will influence the surface of adsorbent 144,146, thereby reduce its adsorption capacity.Therefore, as shown in Figure 4, adsorbent 144,146 can be packaged in and filter in the stopper material 142, as the thin layer section of general adsorbent 344 with the adsorbent of selecting 346.
Be not exposed under the identical level of plasticizer the adsorbent that bundle disperses because the adsorbent of packing can not resemble, adsorbent will keep the surface area and the smoke components interaction of bigger practicality.
Read the above, those skilled in the art should be able to manage characteristics change of the present invention.For example, filter stopper, the general sorbent segment and the sorbent segment of selection can and change length and diameter each other with respect to specific virtually any size here.Moreover the size of different sections can be for a kind of specific pipe tobacco compound or dimensionally-optimised for specific tobacco rod.The change of these and other is be sure of should be included in the spirit and scope of the appended claims.
Claims (31)
1. the cigarette filter of a multistage, it comprises:
(a) sorbent segment of a selection contains a kind of sorbent material of selection, has the compatibility with one group of predetermined compound, and it is dispersed in whole a kind of fibrous material, and
(b) general sorbent segment, contain a kind of general sorbent material, have high surface area, can adsorb smoke components, and not having characteristic highly, the sorbent segment of above-mentioned selection and above-mentioned general sorbent segment are coaxially to be arranged as series connection.
2. according to the cigarette filter of claim 1, it is characterized in that the sorbent material of above-mentioned selection is a kind of ion exchange resin.
3. according to the cigarette filter of claim 2, it is characterized in that the sorbent material of above-mentioned selection has a surface area, it guarantees that enough the function of surface position can easily reach for smoke components.
4. according to the cigarette filter of claim 2, it is characterized in that above-mentioned ion exchange resin has the matrix of a phenolic resins, and be to use first and amine groups secondary, surface-functionalized.
5. according to the cigarette filter of claim 2, it is characterized in that the sorbent segment of above-mentioned selection contains the sorbent material of above-mentioned selection, be dispersed in whole a kind of fibrous material.
6. according to the cigarette filter of claim 2, it is characterized in that the sorbent segment of above-mentioned selection contains the liner of a close packing of the sorbent material of above-mentioned selection.
7. according to the cigarette filter of claim 1, it is characterized in that above-mentioned general sorbent material is one group that selects from following, comprise active charcoal, active cocoanut shell carbon, active coal-based carbon, zeolite, silica dioxide gel, sepiolite, aluminium oxide is by the coal-based charcoal of semianthractie manufacturing, by the resin of the carbon containing of the styrene-divinylbenzene pyrolysis derivative of sulfonation, or their a kind of combination.
8. according to the cigarette filter of right 7, it is characterized in that above-mentioned general sorbent segment contains above-mentioned general sorbing material, be dispersed in whole a kind of fibrous material.
9. according to the cigarette filter of claim 7, it is characterized in that above-mentioned general sorbent segment contains the liner of a close packing of above-mentioned general sorbing material.
10. according to the cigarette filter of claim 7, it is characterized in that above-mentioned general sorbent segment also comprises a kind of metal oxide or other Metal Substrate compound.
11. cigarette filter according to claim 1, comprise the filtration stopper of a fiber, it is characterized in that, above-mentioned filtration stopper be by following material make " the filtration stopper of above-mentioned fiber is coaxially to be arranged as series connection with the sorbent segment of above-mentioned selection and above-mentioned general sorbent segment for cellulose; cellulose acetate tow; paper, cotton, polypropylene net; polypropylene bundle; polyester webs, polyester bundle or their a kind of combination.
12. according to the cigarette filter of claim 11, also comprise a kind of plasticizer, a kind of liquid additive, a kind of aromatic or their a kind of combination.
13. the cigarette filter according to claim 11 is characterized in that, above-mentioned general sorbent segment is to be positioned between the sorbent segment of the filtration stopper of above-mentioned fiber and above-mentioned selection.
14. according to the cigarette filter of claim 11, the sorbent segment that it is characterized in that above-mentioned selection is to be positioned between the filtration stopper and above-mentioned general sorbent segment of above-mentioned fiber.
15. the cigarette filter according to claim 11 is characterized in that, the stopper of above-mentioned fiber is to be positioned between the sorbent segment and above-mentioned general sorbent segment of above-mentioned selection.
16. according to the cigarette filter of claim 1, comprise stopper parcel, limit the sorbent segment of above-mentioned general sorbent segment and above-mentioned selection.
17. the cigarette filter according to claim 1 is characterized in that, the surface area that the sorbent material of above-mentioned selection has is greater than about 35m
2/ g.
18. the cigarette filter of a multistage, it comprises:
(a) the filtration stopper of a fiber is selected to comprise cellulose, acetate tow, paper, cotton, polypropylene net, polypropylene bundle, polyester webs, polyester bundle, or their a kind of combination from following one group;
(b) sorbent segment of a selection contains a kind of ion exchange resin, has a surface area, and it guarantees that enough the function of surface position can easily reach for smoke components;
(c) general sorbent segment, contain a kind of general sorbent material, selection is from following one group, comprise active charcoal, active cocoanut shell carbon, active coal-based carbon, zeolite, silica dioxide gel, sepiolite, aluminium oxide, the coal-based charcoal of making by semianthractie, by the resin of the carbon containing of the styrene-divinylbenzene pyrolysis derivative of sulfonation, or their a kind of combination, the filtration stopper of above-mentioned fiber, the sorbent segment of above-mentioned selection and above-mentioned general sorbent segment are coaxially to be arranged as series connection.
19. the cigarette filter according to claim 18 is characterized in that, above-mentioned ion exchange resin has the matrix of a phenolic resins, and is to use first surface-functionalized with amine groups secondary.
20. the cigarette filter according to claim 18 is characterized in that, the sorbent segment of above-mentioned selection contains above-mentioned ion exchange resin and is dispersed in whole a kind of fibrous material.
21. the cigarette filter according to claim 18 is characterized in that, the sorbent segment of above-mentioned selection contains the liner of a close packing of above-mentioned ion exchange resin.
22. the cigarette filter according to claim 18 is characterized in that, above-mentioned general sorbent segment contains above-mentioned general sorbent material, is dispersed in whole a kind of fibrous material.
23. the cigarette filter according to claim 22 is characterized in that, above-mentioned general sorbent segment also comprises a kind of additive, selects from a kind of metal oxide or other Metal Substrate compound.
24. the cigarette filter according to claim 18 is characterized in that, above-mentioned general sorbent segment contains the liner of a close packing of above-mentioned general sorbing material.
25. the cigarette filter according to claim 24 is characterized in that, above-mentioned general sorbent segment comprises that also a kind of additive selection is from a kind of metal oxide or a kind of Metal Substrate compound.
26. the cigarette filter according to claim 18 is characterized in that, the stopper of above-mentioned filtration is made by acetate tow.
27. the cigarette filter according to claim 18 is characterized in that, the stopper of above-mentioned filtration also comprises a kind of plasticizer, a kind of liquid additive, a kind of aromatic or their a kind of combination.
28. the cigarette filter according to claim 18 is characterized in that, above-mentioned general sorbent segment is to be positioned between the sorbent segment of the filtration stopper of above-mentioned fiber and above-mentioned selection.
29. the cigarette filter according to claim 18 is characterized in that, the sorbent segment of selection is to be positioned between the filtration stopper of above-mentioned fiber and the above-mentioned general sorbent segment.
30. the cigarette filter according to claim 18 is characterized in that, the filtration stopper of above-mentioned fiber is to be positioned between the sorbent segment of above-mentioned selection and the above-mentioned general sorbent segment.
31. the cigarette filter according to claim 18 is characterized in that, the sorbent material of above-mentioned selection has one greater than 35m
2The surface area of/g.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30943501P | 2001-08-01 | 2001-08-01 | |
| US30938801P | 2001-08-01 | 2001-08-01 | |
| US60/309,388 | 2001-08-01 | ||
| US60/309,435 | 2001-08-01 | ||
| US10/011,841 | 2001-10-30 | ||
| US10/011,841 US20030066539A1 (en) | 2001-08-01 | 2001-10-30 | Cigarette Filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1553777A true CN1553777A (en) | 2004-12-08 |
| CN100496312C CN100496312C (en) | 2009-06-10 |
Family
ID=27359516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028176693A Expired - Fee Related CN100496312C (en) | 2001-08-01 | 2002-07-30 | Cigarette filter |
Country Status (27)
| Country | Link |
|---|---|
| US (2) | US20030066539A1 (en) |
| EP (1) | EP1411784B8 (en) |
| JP (1) | JP4028483B2 (en) |
| KR (1) | KR100838207B1 (en) |
| CN (1) | CN100496312C (en) |
| AP (1) | AP2134A (en) |
| AR (1) | AR034967A1 (en) |
| AT (1) | ATE527901T1 (en) |
| AU (1) | AU2002322811B2 (en) |
| BR (1) | BR0211853B1 (en) |
| CA (1) | CA2454820C (en) |
| EA (1) | EA005323B1 (en) |
| EG (1) | EG23137A (en) |
| ES (1) | ES2375106T3 (en) |
| HR (1) | HRP20040166B1 (en) |
| HU (1) | HUP0401565A3 (en) |
| IL (2) | IL160150A0 (en) |
| MX (1) | MXPA04001044A (en) |
| MY (1) | MY128508A (en) |
| NO (1) | NO20040452L (en) |
| NZ (1) | NZ531256A (en) |
| OA (1) | OA12647A (en) |
| PL (1) | PL200589B1 (en) |
| RS (1) | RS51032B (en) |
| TW (1) | TWI239237B (en) |
| WO (1) | WO2003015544A1 (en) |
| ZA (1) | ZA200401077B (en) |
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- 2002-07-30 AP APAP/P/2004/002985A patent/AP2134A/en active
- 2002-07-30 NZ NZ531256A patent/NZ531256A/en not_active IP Right Cessation
- 2002-07-30 AU AU2002322811A patent/AU2002322811B2/en not_active Ceased
- 2002-07-30 CN CNB028176693A patent/CN100496312C/en not_active Expired - Fee Related
- 2002-07-30 ES ES02756831T patent/ES2375106T3/en not_active Expired - Lifetime
- 2002-07-30 OA OA1200400032A patent/OA12647A/en unknown
- 2002-07-30 EP EP02756831A patent/EP1411784B8/en not_active Expired - Lifetime
- 2002-07-30 WO PCT/US2002/024240 patent/WO2003015544A1/en active IP Right Grant
- 2002-07-30 IL IL16015002A patent/IL160150A0/en active IP Right Grant
- 2002-07-30 BR BRPI0211853-0A patent/BR0211853B1/en not_active IP Right Cessation
- 2002-07-30 RS YUP-112/04A patent/RS51032B/en unknown
- 2002-07-30 TW TW091117045A patent/TWI239237B/en not_active IP Right Cessation
- 2002-07-30 HU HU0401565A patent/HUP0401565A3/en unknown
- 2002-07-30 PL PL368136A patent/PL200589B1/en not_active IP Right Cessation
- 2002-07-30 EA EA200400191A patent/EA005323B1/en not_active IP Right Cessation
- 2002-07-30 JP JP2003520314A patent/JP4028483B2/en not_active Expired - Fee Related
- 2002-07-30 AT AT02756831T patent/ATE527901T1/en not_active IP Right Cessation
- 2002-07-30 US US10/485,479 patent/US20040237984A1/en not_active Abandoned
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2004
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| CN113287784A (en) * | 2021-06-25 | 2021-08-24 | 云南中烟工业有限责任公司 | Cigarette filter particles capable of reducing release amount of hydrogen sulfide in smoke, preparation method and filter |
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