Importance

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Abstract

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:

description='In-line Formulae' end='lead'|D₁−D₂|≥0.03 cm/s  (i)description='In-line Formulae' end='tail'

at a probability of error of 1%

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First Claim