GB1183498A - Improvements relating to Tobacco-Smoke Filters - Google Patents
Improvements relating to Tobacco-Smoke FiltersInfo
- Publication number
- GB1183498A GB1183498A GB4823367A GB4823367A GB1183498A GB 1183498 A GB1183498 A GB 1183498A GB 4823367 A GB4823367 A GB 4823367A GB 4823367 A GB4823367 A GB 4823367A GB 1183498 A GB1183498 A GB 1183498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- adhesive
- comminuted
- foam
- sodium
- foam material
- 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
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0229—Filter rod forming processes
- A24D3/0241—Filter rod forming processes by compacting particulated materials
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
1,183,498. Tobacco-smoke filters. BRITISH-AMERICAN TOBACCO CO. Ltd. 21 Oct., 1968 [24 Oct., 1967; 24 Nov., 1967; 4 Jan., 1968], Nos. 48233/67, 53548/67 and 673/68. Heading A2C. Tobacco-smoke filters comprise synthetic resin foam material comminuted to a particulate form and wrapped in a band. Preferably a polyurethane resin foam is used but other suitable synthetic resins are polyvinyl chloride, polyethylene, polystyrene, polystyrene/acrylonitrile copolymers, or less desirably condensation polymers of phenols, urea or melamine with formaldehyde. The particulate foam material may be bonded with an adhesive which may be a thermoplastic or thermosetting resin, e.g. a polyethylene resin, or may be an inorganic substance of low melting point i.e. below 250‹C., e.g. crystalline sodium orthophosphate dodecahydrate, and may constitute up to 80 per cent of the total weight of the mixture of adhesive and comminuted foam. Manufacture. Mixtures of comminuted foam material and adhesive may be fed on to a paper band, which band is advantageously coated with a thermoplastic adhesive, and the band is then passed through compression, heating and shaping stations to produce a continuous filter rod. Alternatively, the comminuted foam, with or without powdered or granular adhesive, may be brought into filter rod form by feeding it on an uncoated paper band to the garniture of a conventional cigarettemaking machine. In this latter case, if adhesive is mixed with the foam material it need not be activated by heating until after the rod has been formed. Suitably modified forms of known apparatus are disclosed. In the examples: toluene diisocyanate and diphenylmethane-4 : 4<1> diisocyanate based rigid polyurethane foams were comminuted mixed with comminuted sodium phosphate dodecahydrate and formed into filter sections which were sandwiched between pairs of fibrous cellulose acetate filter sections; zinc acetate was added to a polurethane/sodium acetate mixture to enhance the removal of hydrogen cyanide and hydrogen sulphide by the filter formed therefrom; and cupric nitrate trihydrate was used as the adhesive for a polystyrene foam material. Other adhesive materials used with a toluene diisocy anate based rigid polyurethane foam were sodium perborate tetrahydrate, hydrated calcium bromide, aluminium bromide non- ahydrate, ferrous sulphate heptahydrate, cupric nitrate trihydrate, sodium aluminium sulphate dodecahydrate, sodium acetate trihydrate, magnesium acetate dihydrate, aluminium stearate and magnesium stearate.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4823367A GB1183498A (en) | 1967-10-24 | 1967-10-24 | Improvements relating to Tobacco-Smoke Filters |
ZM13268A ZM13268A1 (en) | 1967-10-24 | 1968-10-23 | Improvements relating to tobaccosmoke filters |
BE722823D BE722823A (en) | 1967-10-24 | 1968-10-24 | |
CH1591368A CH493213A (en) | 1967-10-24 | 1968-10-24 | Method of manufacturing a filter element for tobacco smoke, a filter element obtained by this method and apparatus for its implementation |
NL6815198A NL6815198A (en) | 1967-10-24 | 1968-10-24 | |
BR20342368A BR6803423D0 (en) | 1967-10-24 | 1968-10-24 | PROCESS FOR THE PRODUCTION OF A SMOKE SMOKE FILTER YOUR PRODUCT AND APPLIANCE FOR YOUR PRODUCTION |
DE19681804769 DE1804769A1 (en) | 1967-10-24 | 1968-10-24 | Filters for tobacco smoke |
CY55170A CY551A (en) | 1967-10-24 | 1970-08-06 | Improvements relating to tobacco-smoke filters |
MY7000170A MY7000170A (en) | 1967-10-24 | 1970-12-31 | Improvements relating to tobacco smoke filters |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4823367A GB1183498A (en) | 1967-10-24 | 1967-10-24 | Improvements relating to Tobacco-Smoke Filters |
GB5354867 | 1967-11-24 | ||
GB67368 | 1968-01-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1183498A true GB1183498A (en) | 1970-03-04 |
Family
ID=27253754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4823367A Expired GB1183498A (en) | 1967-10-24 | 1967-10-24 | Improvements relating to Tobacco-Smoke Filters |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE722823A (en) |
CH (1) | CH493213A (en) |
CY (1) | CY551A (en) |
DE (1) | DE1804769A1 (en) |
GB (1) | GB1183498A (en) |
NL (1) | NL6815198A (en) |
ZM (1) | ZM13268A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4002177A (en) * | 1972-08-21 | 1977-01-11 | Philip Morris Incorporated | Microporous styrene polymers and method of making same |
JP2014155491A (en) * | 2013-02-15 | 2014-08-28 | Internatl Tobacco Machinery Poland Sp Zoo | Method, mechanism and device for temporary compression of filter material |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8712617D0 (en) * | 1987-05-28 | 1987-07-01 | British American Tobacco Co | Tobacco smoke filters |
-
1967
- 1967-10-24 GB GB4823367A patent/GB1183498A/en not_active Expired
-
1968
- 1968-10-23 ZM ZM13268A patent/ZM13268A1/en unknown
- 1968-10-24 BE BE722823D patent/BE722823A/xx unknown
- 1968-10-24 CH CH1591368A patent/CH493213A/en not_active IP Right Cessation
- 1968-10-24 DE DE19681804769 patent/DE1804769A1/en active Pending
- 1968-10-24 NL NL6815198A patent/NL6815198A/xx unknown
-
1970
- 1970-08-06 CY CY55170A patent/CY551A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4002177A (en) * | 1972-08-21 | 1977-01-11 | Philip Morris Incorporated | Microporous styrene polymers and method of making same |
JP2014155491A (en) * | 2013-02-15 | 2014-08-28 | Internatl Tobacco Machinery Poland Sp Zoo | Method, mechanism and device for temporary compression of filter material |
US11076635B2 (en) | 2013-02-15 | 2021-08-03 | International Tobacco Machinery Poland Sp. Z O. O. | Method, mechanism and apparatus for momentary compression of filter material |
Also Published As
Publication number | Publication date |
---|---|
CY551A (en) | 1970-08-06 |
NL6815198A (en) | 1969-04-28 |
CH493213A (en) | 1970-07-15 |
BE722823A (en) | 1969-04-01 |
DE1804769A1 (en) | 1969-05-29 |
ZM13268A1 (en) | 1969-06-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |