Biodegradable tobacco smoke filters

Details Biodegradable tobacco smoke filters Biodegradable tobacco smoke filters

A - Human Necessities

24

D

A24D 3/00 (2006.01) A24D 3/08 (2006.01) A24D 3/10 (2006.01) A24D 3/14 (2006.01)

Patent

CA 2151471

The invention provides a cigarette filter (1) the biodegradation of the material (3) which is assisted by the incorporation of swellable means in the filter so that upon exposure to moisture the volume of the filter is increased, preferably to the extent of breaking open a filter wrap (2) which enclosed it.

L'invention se rapporte à un filtre (1) de cigarette. La biodégradation du matériau (3) est favorisée par l'introduction d'un agent gonflant dans le filtre, de sorte qu'en étant exposé à l'humidité, le volume du filtre est augmenté, de préférence au point de briser l'enveloppe (2) entourant le filtre.

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