| 摘要 |
A ventilated cigarette uniquely designed to introduce volatile flavoring agents such as menthol into the mainstream smoke of the cigarette with improved delivery rate and longer shelf life for the flavoring agent. The cigarette has a porous or perforated air permeable wrap encircling the filter plug impregnated with the volatile flavoring agent, enclosed in a perforated or inherently porous air permeable tipping envelope. As the cigarette is smoked, air is drawn through the ventilation area of the tipping, through the flavor-impregnated filter plug wrap and into the filter carrying the volatile flavoring agent with it where it mixes with the smoke, thereby imparting flavor to the cigarette smoke. Since the flavor-impregnated plug wrap is tightly enclosed between the tipping envelope and filter plug, loss of the volatile flavoring agent is minimized, thereby enabling longer shelf life without reduction in flavor potency. Moreover, high delivery rates are achieved using minimum amounts of flavoring agent. |
