The influence of smoke path geometry on TCNO results using smoking machines complying with ISO3308
The work within ISO/TC 126 WG10 has shown that the supersaturated smoke generated under intense smoking regimes like Health Canada T115 is partly condensed in an uncontrolled manner within the path from the cigarette end to the filter. The amount of condensed matter on the way to the filter pad results in a loss of TPM on the filter pad. It has been demonstrated that the loss is slightly higher on machines following the rotary principle than the linear principle. It is assumed that this loss is caused by the distance and by the dead volume between cigarette and smoke trap.
This poster discusses the correlation between design features like distance and/or dead volume between cigarette and filter trap and the influence of these parameters on the collected TPM.
Furthermore the poster demonstrates how to develop a different smoke path design for rotary smoking machines in order to generate more comparable TPM data between rotary and linear smoking under more intense smoking conditions.
Beyond the comparison of different smoke path volumes, the filter holder geometry and the smoke flow distribution in the filter pad holder itself has been studied as influencing factors on TNCO results.