VENTED CIGARETTE WITH MULTIPLE FILTER Russian patent published in 1998 - IPC

FIELD: cigarette industry. SUBSTANCE: cigarette contains tobacco blend with high nicotine content. Tobacco blend contains expanded laminar tobacco with nicotine content of 1.0-8.0% and/or film tobacco with nicotine content of 5-10%. Film tobacco further contains fruit acid. Tobacco blend has nicotine content of 2.5-5%. Inhale resistance of multiple filter distant end is higher than that of opposite end adjacent to user's mouth. Ventilation value is 50-90% of secondary air. Main smoke flow has the American blend type flavor, with flavor per each inhalation being invariable. Smoke pH value is within the range of 6.0-7.5%. Feeling analysis shows that condensate and nicotine values are less than 1 mg/cigarette and 0.1 mg/cigarette, respectively, in exceptional cases less than 3 mg of condensate per cigarette and 0.6 mg of nicotine per cigarette. Filter is provided with vent perforations. EFFECT: improved quality of cigarettes and increased retention capacity. 9 cl, 1 dwg, 3 tbl, 3 ex