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A cigarette filter has the purpose of reducing the amount of smoke, tar, and fine particles as combustion products from a cigarette, being inhaled. All this makes the smoke seem somewhat less harsh to the smoker. Tar is the common name for the resinous partially combusted particulate matter produced by the burning of tobacco, cannabis, and other plant material in the act of smoking. ...
Particulates, alternatively referred to as particulate matter (PM), aerosols or fine particles, are tiny particles of solid or liquid suspended in a gas. ...
This article is about the chemical reaction combustion. ...
Unlit filtered cigarettes. ...
History The filter cigarette was a specialty item until 1954, when manufacturers introduced it broadly following a spate of speculative announcements from doctors and researchers concerning a possible link between lung diseases and smoking. Since filtered cigarettes were considered "safer," by the 1960s, they dominated the market. Human respiratory system The lungs flank the heart and great vessels in the chest cavity. ...
With classic filter cigarettes, the filter is covered with a cork-colored mouthpiece. Nowadays, some cigarette brands use a white mouth piece, especially those which are oriented to a predominantly female target group, it is also used to signify a menthol cigarette in the United Kingdom. Menthol is a covalent organic compound made synthetically or obtained from peppermint or other mint oils. ...
Most factory-made cigarettes are equipped with a filter; those who roll their own can buy them in a tobacco store.
Manufacture The raw material for the manufacture of cigarette filters is cellulose (obtained from wood). The cellulose is acetylated, dissolved, and spun as continuous synthetic fibers arranged into a bundle called tow. The cellulose is a substituted diacetate (actually 2.35 - 2.55 substitution range) cellulose, due to its chemical and physical processing. This tow is opened, plasticized, shaped, and cut to length to act as a filter. Cellulose as polymer of β-D-glucose Cellulose in 3D Cellulose (C6H10O5)n is a polysaccharide of beta-glucose. ...
A tow is an untwisted bundle of continuous filaments. ...
In the early 1950s Kent brand cigarettes used crocidolite asbestos as part of the (Micronite) filter. Asbestos fiber is heatproof, insoluble and forms extremely fine fibers — but has been proven to cause lung cancer when inhaled.[1] KENT outdoor advertising Kent is a brand of cigarettes, first to introduce smoke filters in 1952. ...
Amphibole (Hornblende) Amphibole defines an important group of dark-colored rock-forming inosilicate minerals composed of double chain SiO4 tetrahedra linked at the vertices and generally containing ions of iron and/ or magnesium in their structures. ...
For other uses, see Asbestos (disambiguation). ...
The initial use of filters in cigarettes was a move on the part of the manufacturers to reduce the production costs and increase profits.[citation needed] The U.S. Department of Agriculture price support for the various grades of tobacco favored the use of #4 and 5 grade, included what were known as sand lugs and floor sweepings at 10 cents/lb versus #1 grade at close to 70 cents[citation needed]. During the 1940s, it was less expensive to manufacture a filtered cigarette than a regular one. The filter masked the harsh cheap tobacco. It was simple enough to test this known fact. A filtered cigarette such as Viceroy or Parliament with the filter removed were practically unsmokable[citation needed]. “USDA†redirects here. ...
The decline in sales in the U.S. of top grade tobaccos as a result of this shift left the U.S. government having to buy and store tremendous quantities of top grades, which were sold at a loss (to the U.S. taxpayer) to European manufacturers.[citation needed]
"Light" cigarettes Especially with "light" cigarettes, the filter is perforated with tiny holes in order to dilute the smoke with air. As such, it contains less tar and nicotine. It is said however, in practical use, the average smoker covers parts of the holes with his fingers and lips, so that the inhaled smoke contains a higher concentration of tar and nicotine than determined by the smoke-testing machines and as printed on the pack. Anecdotal evidence indicates that many smokers can differentiate between light and regular cigarettes.[citation needed] This article is about the chemical compound. ...
Ultra-fine fibers Cigarette filter fibers are considered to be much too large in diameter to be inhaled into the lungs. With inhalation, theoretically, fine fibers are transported into the lungs and the amount of inhaled substances increases. At the same time, the greater resistance when inhaling leads to a longer suction phase and thus to a deeper inhalation than with non-filter cigarettes--again theoretically. There is no conclusive scientific evidence that filter cigarettes are less harmful than non-filtered. Puffing is a technique to bring smoke (usually tobacco) into the mouth cavity. ...
Disposal The cellulose acetate most cigarette filters are made from is a biodegradable resistant material. Depending on conditions, estimate the time taken for them to degrade range from British American Tobacco's 10 months - 3 years[2], to 11 years. Cellulose acetate, first prepared in 1865, is the acetate ester of cellulose. ...
British American Tobacco Plc (LSE: BATS, AMEX: BTI, KLSE: BAT) is the second largest listed tobacco company in the world. ...
This resistance to biodegrading is a factor in littering[3], environmental damage[4] and suggested lung damage[5][6]. In the 2006 International Coastal Cleanup, cigarettes and cigarette butts constituted 24.7% of the total collected garbage, over twice much as any other category.[7]
See also A cigarette holder is a slender tube in which a single cigarette is held for smoking, as opposed to the cigarette case which holds many cigarettes for the purpose of carrying. ...
This article is about the chemical compound. ...
The cigarette is the most common method of smoking tobacco. ...
It has been suggested that this article or section be merged with Cigarette#Contents of a cigarette. ...
It has been suggested that this article or section be merged with Chemicals in a cigarette. ...
References - ^ Snopes.com: "Cigarette Filter Danger"
- ^ http://www.bat.com/group/sites/UK__3MNFEN.nsf/vwPagesWebLive/4572237B0C2D456CC1257314004EF667 British American Tobacco Cigarette Design
- ^ http://www.ceredigion.gov.uk/index.cfm?articleid=5364 Ceredigion County Council
- ^ http://www.longwood.edu/cleanva/ciglitterarticle.htm Bulletin of the American Littoral Society, Volume 25, Number 2, August 2000
- ^ http://www.newscientist.com/article/dn2027.html New Scientist
- ^ http://tobaccocontrol.bmj.com/cgi/content/full/11/suppl_1/i51/T1 Tobacco Control, British Medical Journal Publishing
- ^ http://www.oceanconservancy.org/site/DocServer/Final_ICC_report_2007_release.pdf?docID=2841 International Coastal Cleanup 2006 Report, page 8
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