Patent ID: 8646464

Claim:
A paper wrapper for a smoking article comprising cellulose fibers and filler particles, the paper wrapper including a first exterior surface and a second interior and opposite surface, the filler particles forming a concentration gradient over a thickness of the paper wrapper such that a greater concentration of filler particles is present at the first exterior surface in comparison to the concentration of filler particles present at the second interior surface, the first exterior surface being smoother than the second interior surface, the first exterior surface having a Sheffield smoothness of less than about 500; wherein greater than about 65% by weight of the filler particles are contained in the paper wrapper between a middle of the wrapper and the first exterior surface; and at least one treated area located on the first exterior surface of the paper wrapper, the treated area comprising an ignition reducing composition, the treated area reducing the ignition proclivity characteristics of a smoking article incorporating the paper wrapper, the treated area having a porosity coefficient of variation of less than about 27%.