EP2170110A2 - Degradable cigarette filters - Google Patents
Degradable cigarette filtersInfo
- Publication number
- EP2170110A2 EP2170110A2 EP08826746A EP08826746A EP2170110A2 EP 2170110 A2 EP2170110 A2 EP 2170110A2 EP 08826746 A EP08826746 A EP 08826746A EP 08826746 A EP08826746 A EP 08826746A EP 2170110 A2 EP2170110 A2 EP 2170110A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- cigarette filter
- filter according
- biodegradable
- cross
- 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.)
- Withdrawn
Links
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 29
- 239000000835 fiber Substances 0.000 claims abstract description 42
- 239000003463 adsorbent Substances 0.000 claims abstract description 6
- 239000000796 flavoring agent Substances 0.000 claims abstract description 6
- 235000019634 flavors Nutrition 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229920000520 poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Polymers 0.000 claims abstract description 4
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 claims description 2
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 claims description 2
- 229940041616 menthol Drugs 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 description 9
- 229920002301 cellulose acetate Polymers 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000002074 melt spinning Methods 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- WJBVQJRPIORKRK-UHFFFAOYSA-N acetic acid;2,3-diacetyloxypropyl acetate Chemical compound CC(O)=O.CC(=O)OCC(OC(C)=O)COC(C)=O WJBVQJRPIORKRK-UHFFFAOYSA-N 0.000 description 1
- 230000000397 acetylating effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000578 dry spinning Methods 0.000 description 1
- 229920005839 ecoflex® Polymers 0.000 description 1
- 238000001523 electrospinning Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920003179 starch-based polymer Polymers 0.000 description 1
- 239000004628 starch-based polymer Substances 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
-
- 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
- A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
- A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
- A24D3/064—Use of materials for tobacco smoke filters characterised by structural features of the fibers having non-circular cross-section
-
- 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
- A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
- A24D3/068—Biodegradable or disintegrable
-
- 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
-
- 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
Definitions
- the present invention relates to degradable cigarette filters, and more particularly to shaped fibers made from degradable materials and the use of such shaped fibers in cigarette filters.
- Conventional cigarette filter plugs are made of cellulose acetate fibers bonded to each other by triacetin. After smoking, the spent filters are sometimes discarded in the environment. The cellulose acetate filaments therein tend to degrade slower than tobacco and/or the paper parts of the cigarettes, often contributing to the litter in the environment. To reduce such litter, there is a need to replace cellulose acetate filaments in cigarette filters with materials that degrade faster than cellulose acetate in the environment. At the same time, there is also a need to retain the filtration chemistry, smoke characteristics and consumer acceptability from the cellulose acetate triacetin systems.
- a cigarette filter produced from biodegradable materials formed into fibers with designed cross sectional shapes.
- Another object of the present invention is a cigarette filter of biodegradable shaped fibers with increased surface area and reduced overall material per filter.
- Still another object of the present invention is a cigarette filter of biodegradable shaped fibers having micro cavities therein for retaining flavorants and adsorbents for favor delivery and selective filtration.
- a biodegradable cigarette filter comprises shaped fibers of PHBV.
- the fibers may have designed shapes in cross section that include Y, V, C, Triad, 4-DG and JC shapes.
- the shaped fiber may include micro cavities with adsorbents and/or flavorants in the cavities.
- Figure 1 is a cross sectional view of a shaped biodegradable fiber having a Y shape
- Figure 2 is a cross sectional view of a shaped biodegradable fiber having a V shape
- Figure 3 is a cross sectional view of a shaped biodegradable fiber having a C shape
- Figure 4 is a cross sectional view of a shaped biodegradable fiber having a Triad shape
- Figure 5 is a cross sectional view of a shaped biodegradable fiber having a 4-DG shape
- Figure 6 is a cross sectional view of a shaped biodegradable fiber having a JC shape.
- the cigarette filters of the present invention may be made of sheets, films, fiber bands, yarns, or non-wovens from biodegradable materials such as paper (wood pulps), wool, cellulose acetate with lower acetylating levels, starch, and starch based polymer composites, cotton, polyactic acid, polyvinyl alcohol, polyhyroxyalkanoates, polyesters, polyesteramides, polycaprolactones, un-stabilized polypropylene, micro-glass materials, and their combinations.
- the biodegradable materials can be spun into fibers by melt spinning, dry spinning, wet spinning, electro spinning or any other known process into fibers.
- PHBV Polyhydroxybutyrate-co-hydroxyvalerate
- aliphatic aromatic polyester such as Ecoflex, PBS (poly butylenes succinate), d-, 1-, and dl- PLA (polyactic acid) and starch composites
- Ecoflex poly butylenes succinate
- d-, 1-, and dl- PLA polyactic acid
- starch composites have been successfully spun into round cross section fibers by melt spinning process.
- the filter fibers herein have improved cross sectional shapes. These shaped fibers are formed into filters and used in reduced litter cigarettes.
- the cross section of the fibers may be controlled by the shapes of the die used in the spinning processes.
- the cross section of the fibers may be modified to Y, V, C, Triad, 4-DG, or JC by using appropriate dies in the melt spinning process.
- Other fiber cross sections that have been reported in the literature such as those in U.S. Patent 6,907,895 are included herein by reference.
- single or multi-strands of these shaped fibers from single or multiple components may be drawn and crimped into tow bands, or the strands of these shaped fibers made of faster degradable materials can be combined with cellulose acetate fibers to form a joint tow bands during the cigarette filter making process.
- nonwovens from the above fibers can be produced from melt-blown, spun bonded, needle punched/felt, wet-laid, air-laid and other processes and then processed into cigarette filters by processes of rolling, folding or shredding.
- Appropriate amounts of a bonding/hardening agent may be applied onto the fibers in the filters as needed for firmness and smoke subjective adjustment.
- Adsorbents such as carbon granules and flavorants such as menthol can be impregnated into the micro cavities of the shaped fibers as well.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Filtering Materials (AREA)
- Artificial Filaments (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Biodegradable cigarette filters comprise shaped fiber of PHBV. Included among these fiber shapes in cross section are Y, V, C, Triad, 4-DG and JC shapes. The shaped fibers may include micro cavities with adsorbents and/or flavorants in the cavities.
Description
DEGRADABLE CIGARETTE FILTERS
BACKGROUND OF THE INVENTION
The present invention relates to degradable cigarette filters, and more particularly to shaped fibers made from degradable materials and the use of such shaped fibers in cigarette filters.
Conventional cigarette filter plugs are made of cellulose acetate fibers bonded to each other by triacetin. After smoking, the spent filters are sometimes discarded in the environment. The cellulose acetate filaments therein tend to degrade slower than tobacco and/or the paper parts of the cigarettes, often contributing to the litter in the environment. To reduce such litter, there is a need to replace cellulose acetate filaments in cigarette filters with materials that degrade faster than cellulose acetate in the environment. At the same time, there is also a need to retain the filtration chemistry, smoke characteristics and consumer acceptability from the cellulose acetate triacetin systems.
SUMMARY OF THE INVENTION
Among the objects of the present invention is a cigarette filter produced from biodegradable materials formed into fibers with designed cross sectional shapes.
Another object of the present invention is a cigarette filter of biodegradable shaped fibers with increased surface area and reduced overall material per filter.
Still another object of the present invention is a cigarette filter of biodegradable shaped fibers having micro cavities therein for retaining flavorants and adsorbents for favor delivery and selective filtration.
In accordance with the present invention, a biodegradable cigarette filter comprises shaped fibers of PHBV. The fibers may have designed shapes in cross section that include Y, V, C, Triad, 4-DG and JC shapes. Moreover, the shaped fiber may include micro cavities with adsorbents and/or flavorants in the cavities.
BRIEF DESCRIPTION OF THE DRAWINGS Novel features and advantages of the present invention in addition to those mentioned above will become readily apparent to persons of ordinary skill in the art from a reading of the following detailed description in conjunction with the accompanying drawings wherein similar parts are identified by similar reference characters and in which:
Figure 1 is a cross sectional view of a shaped biodegradable fiber having a Y shape; Figure 2 is a cross sectional view of a shaped biodegradable fiber having a V shape ;
Figure 3 is a cross sectional view of a shaped biodegradable fiber having a C shape;
Figure 4 is a cross sectional view of a shaped biodegradable fiber having a Triad shape; Figure 5 is a cross sectional view of a shaped biodegradable fiber having a 4-DG shape; and
Figure 6 is a cross sectional view of a shaped biodegradable fiber having a JC shape.
DETAILED DESCRIPTION OF THE INVENTION
The cigarette filters of the present invention may be made of sheets, films, fiber bands, yarns, or non-wovens from biodegradable materials such as paper (wood pulps), wool, cellulose acetate with lower acetylating levels, starch, and starch based polymer composites, cotton, polyactic acid, polyvinyl alcohol, polyhyroxyalkanoates, polyesters, polyesteramides, polycaprolactones, un-stabilized polypropylene, micro-glass materials, and their combinations. The biodegradable materials can be spun into fibers by melt spinning, dry spinning, wet spinning, electro spinning or any other known process into fibers.
For example, PHBV (Polyhydroxybutyrate-co-hydroxyvalerate) and its blends with aliphatic aromatic polyester such as Ecoflex, PBS (poly butylenes succinate), d-, 1-, and dl- PLA (polyactic acid) and starch composites have been successfully spun into round cross section fibers by melt spinning process. However, in order to increase the surface area and reduce material use per filter, the filter fibers herein have improved cross sectional shapes. These shaped fibers are formed into filters and used in reduced litter cigarettes. The cross section of the fibers may be controlled by the shapes of the die used in the spinning processes. As shown in Figures 1-6, the cross section of the fibers may be modified to Y, V, C, Triad, 4-DG, or JC by using appropriate dies in the melt spinning process. Other fiber cross sections that have been reported in the literature such as those in U.S. Patent 6,907,895 are included herein by reference. To process these shaped fibers into cigarette filters, single or multi-strands of these shaped fibers from single or multiple components may be drawn and crimped into tow bands, or the strands of these shaped fibers made of faster degradable materials can be combined with cellulose acetate fibers to form a joint tow bands during the cigarette filter making process. Alternatively, nonwovens from the above fibers can be produced from melt-blown, spun bonded, needle punched/felt, wet-laid, air-laid and other processes and then processed into cigarette filters by processes of rolling, folding or shredding. Appropriate amounts of a bonding/hardening agent may be applied onto the fibers in the filters as needed for firmness and smoke subjective adjustment. Adsorbents such as carbon granules and flavorants such as menthol can be impregnated into the micro cavities of the shaped fibers as well.
Claims
CLAIMS:
I . A biodegradable cigarette filter comprising shaped fibers of PHBV.
2. A biodegradable cigarette filter according to claim 1 wherein the fibers have a Y shape in cross section.
3. A biodegradable cigarette filter according to claim 1 wherein the fibers have a V shape in cross section.
4. A biodegradable cigarette filter according to claim 1 wherein the fibers have a C shape in cross section.
5. A biodegradable cigarette filter according to claim 1 wherein the fibers have a Triad shape in cross section.
6. A biodegradable cigarette filter according to claim 1 wherein the fibers have a 4-DG shape in cross section.
7. A biodegradable cigarette filter according to claim 1 wherein the fibers have a JC shape in cross section.
8. A biodegradable cigarette filter according to claim 1 wherein the fibers include micro cavities.
9. A biodegradable cigarette filter according to claim 8 including adsorbents in the micro cavities.
10. A biodegradable cigarette filter according to claim 9 wherein the adsorbents include carbon.
I I . A biodegradable cigarette filter according to claim 8 including flavorants in the micro cavities.
12. A biodegradable cigarette filter according to claim 11 wherein the flavorants include menthol.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US95329607P | 2007-08-01 | 2007-08-01 | |
| PCT/IB2008/002793 WO2009016513A2 (en) | 2007-08-01 | 2008-07-31 | Degradable cigarette filters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2170110A2 true EP2170110A2 (en) | 2010-04-07 |
Family
ID=40304985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08826746A Withdrawn EP2170110A2 (en) | 2007-08-01 | 2008-07-31 | Degradable cigarette filters |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20090032037A1 (en) |
| EP (1) | EP2170110A2 (en) |
| JP (1) | JP2010535024A (en) |
| KR (1) | KR20100045412A (en) |
| CN (1) | CN101742932A (en) |
| AU (1) | AU2008281436A1 (en) |
| BR (1) | BRPI0815065A2 (en) |
| CO (1) | CO6160279A2 (en) |
| EA (1) | EA201070199A1 (en) |
| MX (1) | MX2010001248A (en) |
| WO (1) | WO2009016513A2 (en) |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7479098B2 (en) | 2005-09-23 | 2009-01-20 | R. J. Reynolds Tobacco Company | Equipment for insertion of objects into smoking articles |
| US8613284B2 (en) * | 2008-05-21 | 2013-12-24 | R.J. Reynolds Tobacco Company | Cigarette filter comprising a degradable fiber |
| US8079369B2 (en) | 2008-05-21 | 2011-12-20 | R.J. Reynolds Tobacco Company | Method of forming a cigarette filter rod member |
| EP2537427B1 (en) * | 2008-05-21 | 2016-08-17 | R.J. Reynolds Tobacco Company | Cigarette filter having composite fiber structures |
| US8375958B2 (en) * | 2008-05-21 | 2013-02-19 | R.J. Reynolds Tobacco Company | Cigarette filter comprising a carbonaceous fiber |
| US8944072B2 (en) * | 2009-06-02 | 2015-02-03 | R.J. Reynolds Tobacco Company | Thermal treatment process for tobacco materials |
| US8991403B2 (en) * | 2009-06-02 | 2015-03-31 | R.J. Reynolds Tobacco Company | Thermal treatment process for tobacco materials |
| GB2474694B (en) * | 2009-10-23 | 2011-11-02 | Innovia Films Ltd | Biodegradable composites |
| CN102080276B (en) * | 2009-11-30 | 2014-05-14 | 合肥中科绿色家电科技有限公司 | Biodegradable cigarette fiber material and cigarette filter tip |
| WO2011123320A2 (en) * | 2010-03-31 | 2011-10-06 | Greenbutts Llc | Biodegradable cigarette filter and methods for making same |
| US20120017925A1 (en) * | 2010-06-30 | 2012-01-26 | Sebastian Andries D | Degradable cigarette filter |
| US20120000480A1 (en) | 2010-06-30 | 2012-01-05 | Sebastian Andries D | Biodegradable cigarette filter |
| WO2012012053A1 (en) | 2010-06-30 | 2012-01-26 | R.J. Reynolds Tobacco Company | Biodegradable cigarette filter |
| US9282769B2 (en) | 2011-03-15 | 2016-03-15 | Altria Client Services Llc | Biodegradable cigar tip |
| GB201105455D0 (en) | 2011-03-31 | 2011-05-18 | British American Tobacco Co | Blends of a polylactic acid and a water soluble polymer |
| US9289012B2 (en) | 2011-07-29 | 2016-03-22 | R. J. Reynolds Tobacco Company | Plasticizer composition for degradable polyester filter tow |
| US8973588B2 (en) | 2011-07-29 | 2015-03-10 | R.J. Reynolds Tobacco Company | Plasticizer composition for degradable polyester filter tow |
| UA115426C2 (en) * | 2011-09-09 | 2017-11-10 | Філіп Морріс Продактс С.А. | Smoking article filter including polymeric insert |
| CN102691121B (en) * | 2012-06-14 | 2014-09-03 | 江苏天圣达集团无锡新合纤有限公司 | Polylactic acid/polypropylene cigarette composite tow with sheath-core structure and preparation method thereof |
| US8790556B2 (en) * | 2012-07-25 | 2014-07-29 | Celanese Acetate Llc | Process of making tri-arc filaments |
| JP2015525079A (en) * | 2012-07-25 | 2015-09-03 | セラニーズ アセテート，エルエルシー | Spinneret containing three arc holes and three arc filaments made therefrom |
| WO2014018446A1 (en) * | 2012-07-25 | 2014-01-30 | Celanese Acetate Llc | Spinneret comprising tri-arc holes and tri-arc filaments produced therefrom |
| US9119419B2 (en) * | 2012-10-10 | 2015-09-01 | R.J. Reynolds Tobacco Company | Filter material for a filter element of a smoking article, and associated system and method |
| RU2668858C1 (en) | 2013-12-20 | 2018-10-03 | Филип Моррис Продактс С.А. | Smoking article filter including degradable filter component |
| GB201400990D0 (en) | 2014-01-21 | 2014-03-05 | British American Tobacco Co | Filter materials and filters made therefrom |
| GB2512749B (en) * | 2014-02-25 | 2015-04-01 | Cambridge Silicon Radio Ltd | Linking ad hoc networks |
| US10076135B2 (en) | 2014-05-23 | 2018-09-18 | Greenbutts Llc | Biodegradable cigarette filter tow and method of manufacture |
| US10524500B2 (en) | 2016-06-10 | 2020-01-07 | R.J. Reynolds Tobacco Company | Staple fiber blend for use in the manufacture of cigarette filter elements |
| PL3821733T3 (en) * | 2018-07-13 | 2024-03-18 | Daicel Corporation | Band for heated tobacco product tip, heated tobacco product tip, and production method of band for heated tobacco product tip |
| EA202192419A1 (en) * | 2019-04-05 | 2022-02-07 | ДжейТи ИНТЕРНЕШНЛ СА | AEROSOL GENERATING DEVICE WITH ENVIRONMENTALLY OPTIMIZED FILTER |
| US20210015170A1 (en) * | 2019-07-15 | 2021-01-21 | Bio-On S.P.A. | Aerosol-generating articles suitable for use in aerosol-generating devices |
| CN110477450B (en) * | 2019-08-28 | 2023-07-11 | 深圳市智叶科技有限公司 | Filter tip for electronic cigarette and preparation method thereof |
| CN111548772A (en) * | 2020-05-29 | 2020-08-18 | 南通大学 | Multi-walled carbon nanotube composite shape-stabilized phase change material and preparation method and application thereof |
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|---|---|---|---|---|
| US5292783A (en) * | 1990-11-30 | 1994-03-08 | Eastman Kodak Company | Aliphatic-aromatic copolyesters and cellulose ester/polymer blends |
| DE4136694C2 (en) * | 1991-11-07 | 1996-10-10 | Inventa Ag | Starch fiber or starch-modified fiber, process for its production and its use |
| US5538019A (en) * | 1993-11-03 | 1996-07-23 | Schweitzer-Mauduit International, Inc. | Spunbond cigarette filter |
| US5947126A (en) * | 1997-05-29 | 1999-09-07 | Eastman Chemical Co. | Environmentally disintegratable tobacco smoke filter rod |
| MY128157A (en) * | 2000-04-20 | 2007-01-31 | Philip Morris Prod | High efficiency cigarette filters having shaped micro cavity fibers impregnated with adsorbent or absorbent materials |
| MY138902A (en) * | 2000-04-20 | 2009-08-28 | Philip Morris Prod | "cigarette filters of shaped micro cavity fibers impregnated with flavorant materials" |
| US6946506B2 (en) * | 2001-05-10 | 2005-09-20 | The Procter & Gamble Company | Fibers comprising starch and biodegradable polymers |
| US6907895B2 (en) * | 2001-09-19 | 2005-06-21 | The United States Of America As Represented By The Secretary Of Commerce | Method for microfluidic flow manipulation |
| EP1458543A1 (en) * | 2001-11-30 | 2004-09-22 | Philip Morris Products Inc. | Continuous process for impregnating solid adsorbent particles into shaped micro-cavity fibers and fiber filters |
| US6919105B2 (en) * | 2003-01-06 | 2005-07-19 | Philip Morris Usa Inc. | Continuous process for retaining solid adsorbent particles on shaped micro-cavity fibers |
| US7767134B2 (en) * | 2005-06-29 | 2010-08-03 | Philip Morris Usa Inc. | Templated carbon monolithic tubes with shaped micro-channels and method for making the same |
| US8602036B2 (en) * | 2006-08-03 | 2013-12-10 | Philip Morris Usa Inc. | Smoking articles enhanced to deliver additives incorporated within electrospun microfibers and nonofibers, and related methods |
-
2008
- 2008-07-31 EA EA201070199A patent/EA201070199A1/en unknown
- 2008-07-31 EP EP08826746A patent/EP2170110A2/en not_active Withdrawn
- 2008-07-31 BR BRPI0815065-6A2A patent/BRPI0815065A2/en not_active Application Discontinuation
- 2008-07-31 JP JP2010518776A patent/JP2010535024A/en active Pending
- 2008-07-31 AU AU2008281436A patent/AU2008281436A1/en not_active Abandoned
- 2008-07-31 US US12/183,470 patent/US20090032037A1/en not_active Abandoned
- 2008-07-31 CN CN200880024688A patent/CN101742932A/en active Pending
- 2008-07-31 KR KR1020097027544A patent/KR20100045412A/en not_active Application Discontinuation
- 2008-07-31 WO PCT/IB2008/002793 patent/WO2009016513A2/en active Application Filing
- 2008-07-31 MX MX2010001248A patent/MX2010001248A/en not_active Application Discontinuation
-
2010
- 2010-03-01 CO CO10024065A patent/CO6160279A2/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009016513A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009016513A8 (en) | 2009-03-19 |
| CN101742932A (en) | 2010-06-16 |
| MX2010001248A (en) | 2010-03-01 |
| AU2008281436A1 (en) | 2009-02-05 |
| EA201070199A1 (en) | 2010-06-30 |
| CO6160279A2 (en) | 2010-05-20 |
| US20090032037A1 (en) | 2009-02-05 |
| BRPI0815065A2 (en) | 2015-02-10 |
| KR20100045412A (en) | 2010-05-03 |
| WO2009016513A3 (en) | 2009-09-24 |
| JP2010535024A (en) | 2010-11-18 |
| WO2009016513A2 (en) | 2009-02-05 |
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