![]() ![]() While the use of such colour change material would probably have little or no effect on the actual effectiveness of the filter tip material, the advertising and sales advantages are obvious. A before and after smoking visual comparison is usually made and if the filter tip material, after smoking, is darkened, the tip is automatically judged to be effective. The cigarette smoking public attaches great significance to visual examination of the filter material in filter tip cigarettes after smoking the cigarettes. Many are still patterned to look like cork. Ĭigarettes filters were originally made of cork and used to prevent tobacco flakes from getting on the smoker's tongue. The modern cigarette market includes mainly filter cigarettes that are 80, 85, 100, or 120 millimetres ( 3 + 1⁄ 8, 3 + 3⁄ 8, 3 + 7⁄ 8, or 4 + 3⁄ 4 in). īetween the 1930s and the 1950s, most cigarettes were 70 millimetres ( 2 + 3⁄ 4 in) long. Production of filter cigarettes rose from 0.5 percent in 1950 to 87.7 percent by 1975. Since filtered cigarettes were considered safer, by the 1960s, they dominated the market. ![]() It was considered a specialty item until 1954, when manufacturers introduced the machine more broadly, following a spate of speculative announcements from doctors and researchers concerning a possible link between lung diseases and smoking. įrom 1935, Molins Machine Co Ltd a British company began to develop a machine that made cigarettes incorporating the tipped filter. ![]() In 1925, Hungarian inventor Boris Aivaz patented the process of making a cigarette filter from crepe paper. Most factory-made cigarettes are equipped with a filter those who roll their own can buy them from a tobacconist. Most of these measured reductions occur only when the cigarette is smoked on a smoking machine when smoked by a human, the compounds are delivered into the lungs regardless of whether a filter is used. While laboratory tests show a reduction of " tar" and nicotine in cigarette smoke, filters are ineffective at removing gases of low molecular weight, such as carbon monoxide. They have been shown to reduce the risk of lung cancer. įilters are intended to reduce the harm caused by smoking by reducing harmful elements inhaled by smokers. The plastic cellulose acetate filter and paper modify the particulate smoke phase by particle retention ( filtration), and finely divided carbon modifies the gaseous phase ( adsorption). Macroporous phenol-formaldehyde resins and asbestos have also been used. įilters may be made from plastic cellulose acetate fiber, paper or activated charcoal (either as a cavity filter or embedded into the plastic cellulose acetate fibers). Filters were introduced in the early 1950s. A cigarette filter, also known as a filter tip, is a component of a cigarette, along with cigarette paper, capsules and adhesives. ![]()
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