Impact of cigarette paper and blend on super slim, slim and king-size cigarette designs
Superslim (SS) cigarettes account for 5 % of total cigarette sales on the Chinese market, with a year to year increase of 2.1 %. Similar to this fast-growing trend, many more brands of slim (SL) cigarettes have been offered on the market since 2017. To further understand the impact of various cigarette components, a cigarette matrix was designed with tobacco blends used on the domestic market. Cigarette papers with 50 CU and 75 CU and ash conditioner of 0.75 % and 1.5 % mixed citrate were used. Cigarettes in three sizes SS, SL, and King-size (KS) were manufactured with inclusion levels of 3.3 %, 8.8 % and 17.2 % of reconstituted tobacco. Cigarette samples were analysed for their physical properties, tobacco blend, and smoke deliveries using the ISO smoking regime. The results showed that: a) encapsulated cigarette pressure drop followed the order: SS > SL > KS designs; b) tar and nicotine deliveries were lower as reconstituted tobacco inclusion level increased, total deliveries of tar and nicotine were proportional to the weight loss during puff and decreased with decreasing circumference; c) carbon monoxide (CO) deliveries were significantly lower with higher citrate inclusion, higher paper porosity (75 CU vs. 50 CU) may also reduce CO deliveries; d) overall deliveries of SS cigarettes were lower than SL which were lower than KS cigarettes. In conclusion this study provides more insights into the selection and use of components for the designs of cigarettes with reduced circumference.