GB752358A - Tobacco smoke filter material - Google Patents
Tobacco smoke filter materialInfo
- Publication number
- GB752358A GB752358A GB297854A GB297854A GB752358A GB 752358 A GB752358 A GB 752358A GB 297854 A GB297854 A GB 297854A GB 297854 A GB297854 A GB 297854A GB 752358 A GB752358 A GB 752358A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fibrous materials
- finely divided
- water
- acetone
- rod
- 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
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
Tobacco-smoke filter material in rod form, suitable for cutting into cigarette filter tips, is made by extruding into a hot or cold aqueous precipitating bath a composition comprising (a) a substantially water-insoluble cellulose acetate dissolved in a water-soluble solvent, e.g. acetone or glacial acetic acid; (b) a finely divided mineral or non-cellulosic synthetic fibrous material or a mixture thereof with one or more other finely divided fibrous materials; and (c) particles of a water-soluble solid, e.g. sodium chloride, sodium sulphate decahydrate or magnesium sulphate heptahydrate, so as to form a rod of fibres bonded together by the precipitated cellulose acetate, and containing pores formed by the leaching out of the particles of the water-soluble solid. When acetone is used as solvent, the formed rod is removed from the precipitating bath and heated to expel residual acetone. Natural, e.g. asbestos, or artificial, e.g. vitreous aluminium silicate, mineral fibrous materials may be used. Suitable non-cellulosic synthetic fibrous materials are nylon and synthetic linear polyesters such as those derived from terephthalic acid and ethylene glycol. The other finely divided fibrous materials may include cotton, wool, viscose rayon or tissue paper shredded by mixing the composition prior to extrusion. All the finely divided fibrous materials have a fibre length of less than 0.5 cm. A screw-type extruder may be employed. Quantitative process examples are given.ALSO:Tobacco smoke filter materials in rod form suitable for cutting into cigarette filter tips is made by extruding into a air hot or cold aqueous precipitating bath a composition comprising (a) a substantially water-insoluble cellulose acetate dissolved in a water-soluble solvent, e.g. acetone or glacial acetic acid, (b) a finely divided mineral or non-cellulosic synthetic fibrous material or a mixture thereof with one or more further finely divided fibrous materials and (c) particles of a water-soluble solid, e.g. sodium chloride, sodium sulphate decahydrate or magnesium sulphate heptahydrate, so as to form a rod of fibres bonded together by the precipitated cellulose acetate, and containing pores formed by leaching out of the particles of the water-soluble solid. When acetone is used as solvent, the formed rod is removed from the precipitating bath and heated to expel residual acetone. Natural, e.g. asbestos, or artificial, e.g. vitreous aluminium silicate, mineral fibrous materials may be used. Suitable non-cellulosic synthetic fibrous materials are nylon and synthetic linear polyesters such as those derived from terephthalic acid and ethylene glycol. The further finely divided fibrous materials may include cotton, wool, viscose rayon or tissue paper shredded by mixing of the composition prior to extrusion. All the finely divided fibrous materials have a fibre length of less than 0.5 cm. A screw-type extruder may be employed. Quantitative process examples are given. The Registered Trade Mark "Fiberfrax" is mentioned.ALSO:Tobacco smoke filter material in rod form suitable for cutting into cigarette filter tips is made by extruding into a hot or cold aqueous precipitating bath a composition comprising (a) a substantially water-insoluble solvent, e.g. acetone or glacial acetic acid, (b) a finely divided mineral or non-cellulosic synthetic fibrous material or a mixture thereof with one or more further finely divided fibrous materials and (c) particles of a water-soluble solid, e.g. sodium chloride, sodium sulphate decahydrate or magnesium sulphate heptahydrate, so as to form a rod, of fibres bonded together by the precipitated cellulose acetate, and containing pores formed by leaching out of the particles of the water-soluble solid. When acetone is used as solvent, the formed rod is removed from the precipitating bath and heated to expel residual acetone. Natural, e.g. asbestos, or artificial, e.g. vitreous aluminium silicate, mineral fibrous materials may be used. Suitable non-cellulosic synthetic fibrous materials are nylon and synthetic linear polyesters such as those derived from terephthalic acid and ethylene glycol. The further finely divided fibrous materials may include cotton, wool, viscose rayon or tissue paper shredded by mixing of the composition prior to extrusion. All the finely divided fibrous materials have a fibre length of less than 0,5 cm. A screw-type extruder may be employed. Quantitative process examples are given. The Registered Trade Mark "Fiberfrax" is mentioned.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB297854A GB752358A (en) | 1954-02-01 | 1954-02-01 | Tobacco smoke filter material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB297854A GB752358A (en) | 1954-02-01 | 1954-02-01 | Tobacco smoke filter material |
Publications (1)
Publication Number | Publication Date |
---|---|
GB752358A true GB752358A (en) | 1956-07-11 |
Family
ID=9749615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB297854A Expired GB752358A (en) | 1954-02-01 | 1954-02-01 | Tobacco smoke filter material |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB752358A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3356094A (en) * | 1965-09-22 | 1967-12-05 | Battelle Memorial Institute | Smoking devices |
US4059119A (en) * | 1974-06-13 | 1977-11-22 | Montclair Research Corporation | Cigarette and filter |
US4126141A (en) * | 1975-03-26 | 1978-11-21 | Montclair Research Corporation | Filter and cigarette including a filter |
US4149549A (en) * | 1976-05-17 | 1979-04-17 | Montclair Research Corporation | Cigarette and filter |
US4729389A (en) * | 1976-12-06 | 1988-03-08 | Anderson Joseph H | Filter for tobacco smoke |
GB2232674A (en) * | 1989-05-12 | 1990-12-19 | Secr Defence | Microporous organic foam products |
-
1954
- 1954-02-01 GB GB297854A patent/GB752358A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3356094A (en) * | 1965-09-22 | 1967-12-05 | Battelle Memorial Institute | Smoking devices |
US4059119A (en) * | 1974-06-13 | 1977-11-22 | Montclair Research Corporation | Cigarette and filter |
US4126141A (en) * | 1975-03-26 | 1978-11-21 | Montclair Research Corporation | Filter and cigarette including a filter |
US4149549A (en) * | 1976-05-17 | 1979-04-17 | Montclair Research Corporation | Cigarette and filter |
US4729389A (en) * | 1976-12-06 | 1988-03-08 | Anderson Joseph H | Filter for tobacco smoke |
GB2232674A (en) * | 1989-05-12 | 1990-12-19 | Secr Defence | Microporous organic foam products |
GB2232674B (en) * | 1989-05-12 | 1993-07-21 | Secr Defence | Microporous organic foam products |
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