Patent ID: 7836898

Claim:
A wrapper for surrounding a tobacco column to create a smoking article having reduced ignition propensity, the wrapper having a surface comprising: (a) at least one base area having a base permeability; and (b) at least one discrete area having: (i) a greater amount per unit area of permeability reducing substance than the amount per unit area of any permeability reducing substance present in the at least one base area, wherein the at least one discrete area has a lower permeability than the base permeability of the at least one base area, (ii) a greater amount per unit area of burn rate retarding substance than the amount per unit area of any burn rate retarding substance present in the at least one base area, and (iii) a greater amount per unit area of burn rate accelerating substance than the amount per unit area of any burn rate accelerating substance present in the at least one base area, wherein when ignited and freely suspended the smoking article tends to freeburn and when ignited and placed on an ignitable substrate the smoking article exhibits reduced ignition propensity such that it tends to either self-extinguish or not ignite the substrate.