IMPROVEMENTS IN OR RELATING TO SMOKING ARTICLES

摘要

There is provided a smoking article (10) comprising a smokable rod (11) and a filter (12). A tube (17) communicates at its upstream end with a circumferential groove (15) which leads to ventilation perforations (14). The tube (17) is initially blocked with a viscous fluid (19). This fluid (19), therefore, initially prevents ventilation through the perforations (14). After a number of puffs, however, the fluid will have been drawn out of the tube (17) thereby enabling ventilation to occur.