Cigarette having reduced sidestream smoke

Details Cigarette having reduced sidestream smoke Cigarette having reduced sidestream smoke

A - Human Necessities

24

D

A24D 1/02 (2006.01) A24D 1/08 (2006.01) A24D 1/10 (2006.01) D21H 27/00 (2006.01)

Patent

CA 2317428

A cigarette (30) includes an ignition element (36) in contact with tobacco (40, 42), surrounded by a composite outer wrapper (38). The outer wrapper (38) is impervious to oxygen causing the tobacco (40, 42) to extinguish between puffs. The ignition element (36), however, has a longer static bum time than the tobacco (40, 42) and remains smoldering between puffs. Upon a subsequent puff, the smoldering ignition element (36) reignites the tobacco (40, 42). One or more initially occluded perforations (34) in the outer layer (38) maintain the uniformity in combustion of the tobacco (40, 42) and the ignition element (36).

La présente invention concerne une cigarette (30) comprenant un élément d'allumage (36) en contact avec le tabac (40,42) et entouré d'une enveloppe extérieure composite (38). L'enveloppe extérieure (38), qui est imperméable à l'oxygène, fait s'éteindre le tabac (40,42) entre les bouffées. L'élément d'allumage (36), quant à lui, possède une durée de combustion statique plus longue que le tabac (40,42) et continue à se consumer lentement entre les bouffées. Lors d'une bouffée ultérieure, l'élément d'allumage (36), qui a continué à se consumer, rallume le tabac (40,42). Une ou plusieurs perforations initialement obturées (34) dans l'enveloppe extérieure (38) assurent une combustion uniforme du tabac (40,42) et de l'élément d'allumage (36).

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