Improvements relating to smoking article filters

Details Improvements relating to smoking article filters Improvements relating to smoking article filters

A - Human Necessities

24

D

A24D 3/08 (2006.01) A24D 3/04 (2006.01) A24D 3/12 (2006.01) A24D 3/16 (2006.01)

Patent

CA 2531808

The invention describes a filter (1) with a first filter portion (6) comprising an adsorbent, for example carbon, and/or a catalyst, capable of reducing various vapour phase constituents of cigarette smoke. The adsorbent/catalyst is separated from a second filter portion by means of a barrier (2) having pores therein of pore size less than 0.1 ~m. The invention also describes a smoking article in which a rod of smoking material, with or without encapsulated flavour, is attached to the above described filter.

L'invention concerne un filtre (1) pourvu d'une première partie (6) de filtre contenant un adsorbant, par exemple du carbone, et/ou un catalyseur, capable de réduire plusieurs constituants en phase vapeur de cigarettes. L'adsorbant/le catalyseur est séparé d'une seconde partie de filtre au moyen d'une barrière (2) dotée de pores de diamètre inférieur à 0,1 µm. Cette invention porte aussi sur un article de tabac dans lequel une tige d'un matériau de tabac, avec ou sans parfum encapsulé, est fixée au filtre susmentionné.

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