Wrapping Material for Smoking Articles with Directionally Dependent Diffusion Capacity

摘要

A wrapping material for a smoking article is disclosed, which has a laminar shape that extends further in two mutually orthogonal spatial directions X and Y than in a third spatial direction Z orthogonal to the spatial directions X and Y. The wrapping material has, at least in part of its area, a first and a second diffusion capacity D1 and D2 for a diffusion of CO2 through the wrapping material in the +Z-direction and the −Z-direction, respectively, wherein for the first and second diffusion capacity D1 and D2, each an average of 10 values, one or both of the following relationships (i) and (ii) hold:;|D1−D2|≧0.03 cm/s  (i)at a significance level of 99%;2D1-D2D1+D2≥0.030.(ii)

主权项

1. Wrapping material for a smoking article, which has a laminar shape that extends further in two mutually orthogonal spatial directions X and Y than in a spatial direction Z orthogonal to the two spatial directions X and Y,
whereby the wrapping material has, in at least a part of its area, a first and a second diffusion capacity D1 and D2 for the diffusion of CO2 through the wrapping material in the +Z-direction and the −Z-direction respectively, wherein the diffusion capacities D1 and D2 are to be determined according to CORESTA Recommended Method No. 77, characterized in that for the diffusion capacity D1 and D2, each an average over 10 values, one or both of the following relationships (i) and (ii) holds or hold:
|D1−D2|≧0.03 cm/s  (i) with a probability of error of 1%2D1-D2D1+D2≥0.030.(ii)