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    • 2. 发明申请
    • Cigarette with carbon on tow filter
    • 卷烟上带有碳烟
    • US20070261706A1
    • 2007-11-15
    • US11299475
    • 2005-12-12
    • Ashesh BanerjeaCharles LambertArlington FinleyRichard Jupe
    • Ashesh BanerjeaCharles LambertArlington FinleyRichard Jupe
    • A24D3/06
    • A24D3/163
    • A cigarette comprises a tobacco rod and a carbon-on-tow filter comprising a fiber tow with flavored or unflavored carbon particles distributed throughout the tow. The carbon particles have high activity in the range of 90 to 115%, preferably 95%. As mainstream smoke is drawn through the filter, gas phase smoke constituents are removed and flavor is released when the particles are flavored. Ventilation is provided to limit the amount of tobacco being combusted during each puff and such ventilation is arranged at a location near the downstream end of the carbon-on-tow filter to lower mainstream smoke velocity through the filter. The filter achieves significant reductions in gas phase constituents of mainstream smoke, including 90% reductions or greater in at least one of 1, 3 butadiene, acrolein, isoprene, propionaldehyde, acrylonitrile, benzene, toluene, and 80% reductions or greater in acetaldehyde over extended shelf life of the cigarettes.
    • 香烟包括烟丝条和包含纤维丝束的过滤器,所述过滤器包括纤维束,所述纤维束具有分布在整个丝束中的调味或未调味的碳颗粒。 碳颗粒具有在90至115%,优选95%的范围内的高活性。 当主流烟雾通过过滤器时,气相烟成分被除去,并且当颗粒调味时释放风味。 提供通风以限制在每次抽吸期间燃烧的烟草的量,并且这种通风布置在靠近碳 - 过滤器过滤器的下游端的位置以降低通过过滤器的主流烟雾速度。 过滤器实现了主流烟气气相成分的显着降低,包括1,3-丁二烯,丙烯醛,异戊二烯,丙醛,丙烯腈,苯,甲苯中的至少一种中的90%还原或更大,并且在乙醛中减少80%以上 延长香烟的保质期。