Low co cigarette

A - Human Necessities – 24 – D

Patent

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Details

A24D 1/00 (2006.01) A24D 3/04 (2006.01)

Patent

CA 2195044

A cigarette smoking article achieves very low levels of CO and other gas phase components by means of substantial air dilution, but has an acceptable pressure drop and sufficient delivery of particulate matter to provide a flavorful smoke. The filter has two sections, an upstream section which has substantially no pressure drop thereacross and a downstream section which provides substantially all the pressure drop of the filter. Dilution air is admitted to the upstream section of the filter to mix with mainstream smoke before it passes through the downstream section of the filter and thereby reduce the CO and gas phase levels in the smoke.

rticle pour fumeur de cigarette qui permet de très bas niveaux de CO et d'autres composantes en phase gazeuse grâce à une importante dilution à l'air tout en assurant une baisse de pression acceptable et un afflux de particules suffisant pour conserver son goût à la fumée. Le filtre a deux parties : une partie amont, qui ne présente pour ainsi dire aucune baisse de pression sensible d'un bout à l'autre, et une partie aval, où se produit presque toute la baisse de pression du filtre. L'air de dilution entre dans la partie amont du filtre pour se mêler au courant de fumée central avant qu'il ne traverse la partie aval du filtre, ce qui réduit les niveaux de CO et autres composantes en phase gazeuse présents dans la fumée.

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