US 5,271,419 A · Cigarette

Abstract

A cigarette includes a charge or roll of smokable material (e.g., tobacco cut filler) circumscribed by two layers of paper wrapping materials. The first or inner wrapping material includes an inorganic filler material and tobacco material within the web. The inner wrapping material also can include a water soluble salt burn chemical and a carbonaceous material within the web. The second or outer wrapping material circumscribes and overwraps the first wrapping material, has a cellulosic base web and inorganic filler material, and exhibits a low inherent air permeability. The outer wrapping material can include a magnesium hydroxide filler, and exhibits an inherent air permeability of below about 15 CORESTA units and a net air permeability above about 40 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke. The cigarette includes a filter element having 2 or more longitudinally positioned segments, and one of the segments includes a carbonaceous material.

Claims25

Dependent claims

A cigarette comprising (A) a smokable rod including smokable material contained in first and second circumscribing outer wrapping materials;

the first wrapping material circumscribing the smokable filler material, and the second wrapping material circumscribing and overwrapping the first wrapping material;
the first wrapping material including a salt additive and tobacco material;
and the second wrapping material (i) including a cellulosic base web and inorganic filler material, (ii) exhibiting an inherent air permeability below about 15 CORESTA units, and (iii) exhibiting a net air permeability above about 40 CORESTA units;
and (B) a filter element including a carbonaceous material.

1 more element

Dependencies are inferred from the claim text.

Cigarette

Life of this patent

Cigarette

Life of this patent

Abstract

Claims25