Controlled delivery smoking article and method

摘要

A smoking article (10) having a controlled yield of wet particulate matter and a method of making a smoking article with predetermined total and per puff yields of wet particulate matter. The smoking article comprises a tobacco rod (12) connected to an air ventilated compound filter having two abutted filter segments, a rod end segment (20) with a passage (26) therethrough and a mouth end segment (22). The pressure drop of the abutment interface (25) between the segments is selected to be in a range of from about 10 mm to about 100 mm water gauge. The total pressure drop of the filter including the interface and the amount of air dilution can be selected to provide a smoking article with a level per puff yield or a decreasing per puff yield.