SE8207227L - TOBAKSROKFILTER - Google Patents
TOBAKSROKFILTERInfo
- Publication number
- SE8207227L SE8207227L SE8207227A SE8207227A SE8207227L SE 8207227 L SE8207227 L SE 8207227L SE 8207227 A SE8207227 A SE 8207227A SE 8207227 A SE8207227 A SE 8207227A SE 8207227 L SE8207227 L SE 8207227L
- Authority
- SE
- Sweden
- Prior art keywords
- obstructing
- filtering material
- filaments
- tobacco smoke
- core
- Prior art date
Links
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
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A ventilated tobacco smoke filter reduces tar yield mainly by air dilution rather than mechanical filtration (and/or which enhances reduction of CO yield in comparison to that of tar yield), whilst maintaining a relatively high pressure drop, wherein the filtering material forms a layer around a denser flow-obstructing fibrous or filamentary core and is itself surrounded by an air-permeable wrapper. The filtering material is suitably of bonded crimped cellulose acetate filaments and the flow- obstructing core is suitably a zero or low permeability drawn-down rod of bonded substantially uncrimped filaments, e.g. of cellulose acetate. The filter is incorporated in a filter cigarette by means of a ventilating (e.g. perforate) tipping overwrap, which may constitute said wrapper. Also provided is a tobacco smoke filter rod comprising a layer of tobacco smoke filtering material around a denser flow-obstructing drawn-down core of bonded filaments. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8138273 | 1981-12-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE8207227D0 SE8207227D0 (en) | 1982-12-17 |
| SE8207227L true SE8207227L (en) | 1983-06-19 |
Family
ID=10526707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8207227A SE8207227L (en) | 1981-12-18 | 1982-12-17 | TOBAKSROKFILTER |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS58155073A (en) |
| AU (1) | AU556902B2 (en) |
| BE (1) | BE895390A (en) |
| CH (1) | CH651184A5 (en) |
| DE (1) | DE3246898A1 (en) |
| DK (1) | DK560282A (en) |
| FR (1) | FR2518374B1 (en) |
| GB (1) | GB2113066B (en) |
| IT (1) | IT1155005B (en) |
| NL (1) | NL8204909A (en) |
| NO (1) | NO157124C (en) |
| PT (1) | PT76005B (en) |
| SE (1) | SE8207227L (en) |
| ZA (1) | ZA829280B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119221B (en) * | 1982-04-05 | 1986-05-29 | Filtrona Ltd | Cigarette filter |
| US4545391A (en) * | 1983-05-26 | 1985-10-08 | Brown & Williamson Tobacco Corporation | Cigarette filter |
| DK88890A (en) * | 1989-04-14 | 1990-10-15 | Tabac Fab Reunies Sa | CIGARET AND FILTER THEREOF |
| GB8908535D0 (en) * | 1989-04-14 | 1989-06-01 | Tabac Fab Reunies Sa | Cigarette and filter thereof |
| AU635095B2 (en) * | 1990-08-24 | 1993-03-11 | Philip Morris Products Inc. | Concentric smoking filter having discrete tow and web filter media |
| US5746230A (en) * | 1990-08-24 | 1998-05-05 | Philip Morris Incorporated | Concentric smoking filter having discrete tow and web filter media |
| US5365951A (en) * | 1990-08-24 | 1994-11-22 | Philip Morris Incorporated | Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core |
| GB9122448D0 (en) * | 1991-10-23 | 1991-12-04 | Rothmans Int Tobacco | Filter tip cigarette |
| GB9122447D0 (en) * | 1991-10-23 | 1991-12-04 | Rothmans Int Tobacco | Lightweight cigarette filter and cigarettes incorporating such filters |
| DE19718296B4 (en) * | 1997-04-30 | 2006-06-29 | British American Tobacco (Germany) Gmbh | Ventilated filter cigarette with a coaxial filter element |
| GB0713905D0 (en) | 2007-07-17 | 2007-08-29 | British American Tobacco Co | Cellulose acetate thread in filter |
| EP3634158A1 (en) * | 2017-06-09 | 2020-04-15 | Philip Morris Products S.a.s. | Aerosol-generating article having fibrous filter segment |
| RU2771603C2 (en) * | 2017-11-28 | 2022-05-06 | Филип Моррис Продактс С.А. | Aerosol generating product with advanced cavity on mouthpiece end |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3059649A (en) * | 1959-11-20 | 1962-10-23 | Bernhard Edgar | Cigarette structure |
| FR1353720A (en) * | 1962-02-27 | 1964-02-28 | Tobacco smoke purification process and filter for its implementation | |
| GB1336267A (en) * | 1972-03-15 | 1973-11-07 | Webb F | Filter for cigarettes cigars cheroots pipes and like smoking articles |
| US4034765A (en) * | 1975-10-30 | 1977-07-12 | Liggett & Myers Incorporated | Tobacco smoke filter |
| US4026306A (en) * | 1975-11-06 | 1977-05-31 | American Filtrona Corporation | Tobacco smoke filter |
| US4291711A (en) * | 1979-03-27 | 1981-09-29 | American Filtrona Corporation | Tobacco smoke filter providing tobacco flavor enrichment, and method for producing same |
| US4357950A (en) * | 1980-05-27 | 1982-11-09 | American Filtrona Corporation | Tobacco smoke filter having improved tar/carbon monoxide ratio |
-
1982
- 1982-12-15 AU AU91533/82A patent/AU556902B2/en not_active Ceased
- 1982-12-16 GB GB08235897A patent/GB2113066B/en not_active Expired
- 1982-12-17 DK DK560282A patent/DK560282A/en not_active Application Discontinuation
- 1982-12-17 ZA ZA829280A patent/ZA829280B/en unknown
- 1982-12-17 CH CH7351/82A patent/CH651184A5/en not_active IP Right Cessation
- 1982-12-17 DE DE19823246898 patent/DE3246898A1/en not_active Withdrawn
- 1982-12-17 IT IT24837/82A patent/IT1155005B/en active
- 1982-12-17 NO NO824265A patent/NO157124C/en unknown
- 1982-12-17 BE BE0/209759A patent/BE895390A/en not_active IP Right Cessation
- 1982-12-17 SE SE8207227A patent/SE8207227L/en not_active Application Discontinuation
- 1982-12-18 JP JP57221125A patent/JPS58155073A/en active Pending
- 1982-12-20 FR FR8221320A patent/FR2518374B1/en not_active Expired
- 1982-12-20 PT PT76005A patent/PT76005B/en unknown
- 1982-12-20 NL NL8204909A patent/NL8204909A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2113066B (en) | 1985-10-30 |
| AU9153382A (en) | 1983-06-23 |
| IT8224837A1 (en) | 1984-06-17 |
| FR2518374A1 (en) | 1983-06-24 |
| NO824265L (en) | 1983-06-20 |
| NO157124C (en) | 1988-01-27 |
| BE895390A (en) | 1983-06-17 |
| GB2113066A (en) | 1983-08-03 |
| NO157124B (en) | 1987-10-19 |
| NL8204909A (en) | 1983-07-18 |
| CH651184A5 (en) | 1985-09-13 |
| DE3246898A1 (en) | 1983-07-28 |
| SE8207227D0 (en) | 1982-12-17 |
| IT1155005B (en) | 1987-01-21 |
| FR2518374B1 (en) | 1986-10-31 |
| JPS58155073A (en) | 1983-09-14 |
| ZA829280B (en) | 1983-10-26 |
| PT76005A (en) | 1983-01-01 |
| IT8224837A0 (en) | 1982-12-17 |
| PT76005B (en) | 1985-03-18 |
| DK560282A (en) | 1983-06-19 |
| AU556902B2 (en) | 1986-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
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