Patent ID: 8733370
Filing Date: 2014-05-27
Classification: A24D,D21H

Abstract:
1. A wrapper of a smoking article, comprising: a base web; and at least one transverse banded region comprising first, second and third zones, said first and third zones comprising add-on material, which reduces permeability of said wrapper; said first and third zones each having a width such that if either of said first or third zone were applied separately to wrappers of smoking articles, the smoking articles would exhibit statistically significant occurrences of total burn through and statistically few or no occurrences of self-extinguishment under free burn conditions; the sum of said widths of said first and third zones being such that if the first and third zones were applied to wrappers of smoking articles as a single continuous band, the smoking articles would exhibit statistically few or no occurrences of total burn through and statistically significant occurrences of self-extinguishment under free burn conditions, said first and third zones being separated by said second zone, said wrapper having greater permeability along said second zone than along said first and third zones, said second zone having a width less than either width of said first and third zones, so that lit smoking articles comprising said first, second and third zones exhibit statistically reduced occurrences of self-extinguishment under free burn conditions, as compared to smoking articles comprising wrappers whereon the first and third zones are applied as a single continuous band, while maintaining statistically few or no occurrences of total burn through; and wherein the basis weight in grams per square meter of the first and third zones is at least twice the basis weight in grams per square meter of the second zone.