GB1442631A - Cigarette filters - Google Patents
Cigarette filtersInfo
- Publication number
- GB1442631A GB1442631A GB579973A GB579973A GB1442631A GB 1442631 A GB1442631 A GB 1442631A GB 579973 A GB579973 A GB 579973A GB 579973 A GB579973 A GB 579973A GB 1442631 A GB1442631 A GB 1442631A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cigarette
- smoke
- filter
- filters
- foamed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
1442631 Tobacco-smoke filters MONSANTO Ltd 28 Jan 1974 [6 Feb 1973 22 May 1973 17 Oct 1973] 5799/73 24427/73 and 48375/73 Addition to 1341400 Heading A2C [Also in Division C3] A cigarette filter comprises an extruded element (see Specification 1341400) of a substantially open-cell (i.e. the majority of the cell walls are perforated) foamed thermoplastic high density polyethylene or polypropylene resin having a cross-section corresponding to that of the relevant cigarette and a microstructure such that the filter has a hardness greater than 50%, #P 10 less than 15cm. water gauge and a TPM filtration efficiency greater than 20% (the hardness, #P 10 and TPM efficiency being as defined), the element containing dispersed therein a physiologically acceptable substance (i.e. presents no known health hazard to a smoker of cigarettes comprising these filters) that alters to the required degree the composition of the gaseous phase of cigarette smoke passing through the filter when a cigarette comprising the filter is smoked. The substance may remove or reduce one or more components of the smoke and may be active charcoal or triacetin, or it may add one or more gaseous components to the smoke and may be menthol. In the examples high-density polyethylene was blended with calcite as nucleating agent and then active charcoal, triacetin or menthol, and the mixture was extruded, using isobutylene as blowing agent, to form a foamed strand which was pulled through a sizing and quenching apparatus to form foamed rods which were cut into elements to act as cigarette filters.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB579973A GB1442631A (en) | 1973-02-06 | 1973-02-06 | Cigarette filters |
AU65023/74A AU481537B2 (en) | 1973-02-06 | 1974-01-31 | Improved filters |
DE19742404959 DE2404959C3 (en) | 1973-02-06 | 1974-02-01 | Cigarette filters |
IT4813274A IT1002843B (en) | 1973-02-06 | 1974-02-04 | PERFECTED FILTERS ESPECIALLY CIGARETTE FILTERS |
BE140528A BE810576A (en) | 1973-02-06 | 1974-02-04 | Cigarette filter of extruded micro-cellular structure - from thermoplastic synthetic resins, expanders and additives modifying the gaseous phase of the cigarette smoke |
JP1485174A JPS49109599A (en) | 1973-02-06 | 1974-02-05 | |
CA191,788A CA1005724A (en) | 1973-02-06 | 1974-02-05 | Filters |
FR7403753A FR2215905B1 (en) | 1973-02-06 | 1974-02-05 | |
BR83474A BR7400834D0 (en) | 1973-02-06 | 1974-02-06 | CIGARETTE FILTER; FOAMED BASKET AND CIGARETTE |
CH166374A CH604572A5 (en) | 1973-02-06 | 1974-02-06 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB579973A GB1442631A (en) | 1973-02-06 | 1973-02-06 | Cigarette filters |
GB2442773 | 1973-05-22 | ||
GB4837573 | 1973-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1442631A true GB1442631A (en) | 1976-07-14 |
Family
ID=27254711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB579973A Expired GB1442631A (en) | 1973-02-06 | 1973-02-06 | Cigarette filters |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS49109599A (en) |
BR (1) | BR7400834D0 (en) |
CA (1) | CA1005724A (en) |
CH (1) | CH604572A5 (en) |
DE (1) | DE2404959C3 (en) |
FR (1) | FR2215905B1 (en) |
GB (1) | GB1442631A (en) |
IT (1) | IT1002843B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003039277A1 (en) | 2001-11-05 | 2003-05-15 | Hauni Maschinenbau Ag | Filter segments or filter for cigarettes and method for the production thereof |
WO2018007626A1 (en) * | 2016-07-08 | 2018-01-11 | Philip Morris Products S.A. | Flavored tip or mouth-end insert for e-vaping or smokeable devices and manufacturing method thereof |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4729391A (en) * | 1985-11-14 | 1988-03-08 | R. J. Reynolds Tobacco Company | Microporous materials in cigarette filter construction |
US4763674A (en) * | 1986-04-16 | 1988-08-16 | Hercules Incorporated | Method and device for controlling hydrogen cyanide and nitric oxide concentrations in cigarette smoke |
IT1189495B (en) * | 1986-05-09 | 1988-02-04 | S P T Srl | SYNTHETIC FIBERS WITH INCREASED VOLUMINOSITY, PROCEDURE TO PRODUCE THEM AND THEIR USE IN PARTICULAR FOR FILTERS |
GB8611699D0 (en) * | 1986-05-13 | 1986-06-18 | British American Tobacco Co | Smoking articles |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1202699B (en) * | 1960-01-23 | 1965-10-07 | Hoechst Ag | Triacetin loaded tobacco smoke filter |
FR1324235A (en) * | 1960-11-15 | 1963-04-19 | Philip Morris Inc | Advanced filter for gases or vapors such as, in particular, tobacco smoke |
US3311115A (en) * | 1963-10-29 | 1967-03-28 | Buckeye Cellulose Corp | Low density aerosol filter |
FR1446575A (en) * | 1964-09-08 | 1966-07-22 | Eastman Kodak Co | New filters for tobacco smoke and composition used in these filters |
US3217715A (en) * | 1965-05-24 | 1965-11-16 | American Filtrona Corp | Smoke filter and smoking devices formed therewith |
-
1973
- 1973-02-06 GB GB579973A patent/GB1442631A/en not_active Expired
-
1974
- 1974-02-01 DE DE19742404959 patent/DE2404959C3/en not_active Expired
- 1974-02-04 IT IT4813274A patent/IT1002843B/en active
- 1974-02-05 CA CA191,788A patent/CA1005724A/en not_active Expired
- 1974-02-05 JP JP1485174A patent/JPS49109599A/ja active Pending
- 1974-02-05 FR FR7403753A patent/FR2215905B1/fr not_active Expired
- 1974-02-06 BR BR83474A patent/BR7400834D0/en unknown
- 1974-02-06 CH CH166374A patent/CH604572A5/xx not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003039277A1 (en) | 2001-11-05 | 2003-05-15 | Hauni Maschinenbau Ag | Filter segments or filter for cigarettes and method for the production thereof |
WO2018007626A1 (en) * | 2016-07-08 | 2018-01-11 | Philip Morris Products S.A. | Flavored tip or mouth-end insert for e-vaping or smokeable devices and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
DE2404959C3 (en) | 1978-09-07 |
CH604572A5 (en) | 1978-09-15 |
IT1002843B (en) | 1976-05-20 |
FR2215905B1 (en) | 1976-06-25 |
DE2404959B2 (en) | 1978-01-05 |
DE2404959A1 (en) | 1974-08-22 |
JPS49109599A (en) | 1974-10-18 |
FR2215905A1 (en) | 1974-08-30 |
AU6502374A (en) | 1975-07-31 |
CA1005724A (en) | 1977-02-22 |
BR7400834D0 (en) | 1974-11-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |