Research and development of low sidestream cigarettes
Sidestream smoke is the smoke given off from the burning end of a cigarette between puffs. Such smoke may be objectionable to those near the smoker who are not smoking or who do not smoke. Therefore, increased attention has been paid to the reduction of sidestream smoke. By employing special cigarette wrapping paper, sidestream generation can be reduced remarkably. In this work, sidestream smoke is determined using the fishtail chimney described by Proctor et al . The portion of sidestream smoke investigated is sidestream total particulate matter (TPM). Some factors, such as basis weight, porosity, and chemical additives content of cigarette paper all have significant effects on the sidestream TPM, taste, burning rate, and ash characteristics of cigarettes. Such factors and their effects on cigarettes are described in detail in this paper. The present paper proposes an optimal scheme for producing low sidestream smoke cigarettes. In accordance with the scheme, the tobacco rod is wrapped in a single layer cigarette paper. This wrapping paper contains 10% by weight of magnesium hydroxide, 5% by weight of sodium citrate, and 2% by weight of ash solidification additives (besides the materials used in traditional cigarette paper). In addition, the paper has a basis weight of 35 g/m2 and a porosity of 50 cubic centimeters per minute by the CORESTA method. By using ash solidification additives, the ash is continuous and solid, like a tube. In this paper, 2 brands of cigarettes have been developed which exhibit a reduction of 60% in total sidestream TPM delivery. One yields 8.1 mg sidestream TPM per cigarette, the other yields 9.0 mg per cigarette. These cigarettes provide good taste and good smoking satisfaction.