| 摘要 |
<p>A smoking article 20 has a pattern 34a, 34b, 34c, 34d, 36d' of permeability reducing film forming compound applied to the wrapping paper 24. The pattern is configured so that when a smoking article is placed on a substrate, at least two longitudinal locations along the length of the tobacco rod have film forming compound located only on sides of the smoking article not in contact with the substrate. At these longitudinal locations, the restricted airflow to the tobacco due to the presence of the substrate, in combination with the film-forming compound located at the sides is sufficient to cause the smoking article to self-extinguish. However, when the smoking article is held by a smoker, the presence of the film-forming compound does not by itself cause the smoking article to extinguish. A desirable self burn capability is therefore maintained.</p> |
