Improvements relating to smoking articles and filter therefor

Details Improvements relating to smoking articles and filter therefor Improvements relating to smoking articles and filter therefor

A - Human Necessities

24

D

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

Patent

CA 2642521

A filter for smoking articles includes two sections, a first section (2) comprising a longitudinally extending opening (4) surrounded by smoke impervious material (6) and a second section (8) comprising a core (10) having a high-pressure drop material, a circumscribing annulus (12) having a lower pressure drop filter material than the core. The first section (2) is generally adjacent to the tobacco section (18) of a cigarette (3) at a first end and is spaced from the second section (8). Moreover, the invention comprises ventilation holes (20) circumscribing the space or gap (14) between the first and second section or circumscribes the second section (8).

L'invention concerne un filtre pour des articles de fumeurs comprenant deux sections, une première section (2) comprenant une ouverture s'étendant longitudinalement (4) entourée par un matériau imperméable à la fumée (6) et une seconde section (8) comprenant un noyau (10) ayant un matériau de chute haute pression, un anneau délimiteur (12) ayant un matériau de filtre de chute de pression inférieure au noyau. La première section (2) est généralement adjacente à la section de tabac (18) d'une cigarette (3) au niveau d'une première extrémité et est espacée de la seconde section (8). De plus, l'invention comprend des orifices de ventilation (20) délimitant l'espace ou l'intervalle (14) entre les première et seconde sections ou délimite la seconde section (8).

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