US10292418B2 – May 21, 2019 – Wrapping material for smoking articles with directionally dependent diffusion capacity

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Inventors :

Bernhard Pammer

Owner :

A24D1 / 02; A24D1 / 08; A24D1 / 10; D21H27 / 10; D21H27 / 30

Application Number :

US15103902

Document Number :

US10292418B2

Priority Date :

December 13, 2013

Filing Date :

October 29, 2014

Date of Grant/ Publication :

May 21, 2019

Class :

DELFORTGROUP AG

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 D 1 and D 2 for a diffusion of CO 2 through the wrapping material in the +Z-direction and the ?Z-direction, respectively, wherein for the first and second diffusion capacity D 1 and D 2 , 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 probability of error of 1%

Claim(s)

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 D 1 and D 2 for the diffusion of CO 2 through the wrapping material in the +Z-direction and the ?Z-direction respectively, wherein the diffusion capacities D 1 and D 2 are to be determined according to CORESTA Recommended Method No. 77, characterized in that for the diffusion capacity D 1 and D 2 , each an average over 10 values, one or both of the following relationships (i) and (ii) holds or hold: | D 1 ?D 2 |?0.03 cm/s??(i) (ii) with a probability of error of 1% 2 ? ? D 1 – D 2 ? D 1 + D 2 ? 0.030 .

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