Smoking articles

A - Human Necessities – 24 – D

Patent

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A24D 1/00 (2006.01) A24D 1/02 (2006.01)

Patent

CA 1141250

ABSTRACT OF THE DISCLOSURE A smoking article such as a cigarette has a rod of smoking material wrapped in a wrapper of which the substant- ially uniform air permeability due to viscous flow is not more than 3 and preferably not more than 2 Coresta Units and of which the Do/t value is in the range of 0.08 to 0.65 cm sec-1, preferably 0.15 to 0.25 cm sec-1. The length of the rod of smoking material may suitably be within a range of 25 to 55 mm. A reduction in sidestream TPM delivery of 40°C or more can be obtained. The invention is also concerned with a smoking-article wrapper material which satisfies the above permeability and Do/t value requirements.

397693

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