Patent ID: 6286516
Filing Date: 2001-09-11
Classification: A24D

Abstract:
A low sidestream smoke emitting cigarette unit comprising:i) a cigarette with cigarette paper surrounding a tobacco rod of said cigarette;ii) a non combustible material for treating sidestream smoke, surrounding and being substantially in contact with said cigarette paper of a tobacco rod portion of said cigarette; said material being a porous structure and having a porosity which encourages a free-burn rate characteristic of said cigarette without said material;iii) said porous material comprising an oxygen storage component incorporated in sad porous structure or applied on said porous structure, said oxygen storage component is a metal oxide having multiple oxidation states, said oxygen storage component releasing oxygen at free-burn rate temperatures adjacent a buring coal of said cigarette whereby such released oxygen:a) compensates for said porous material reducing rate of oxygen diffusion to a burning coal to ensure said free-burn rate of said cigarette when within said material, andb) contributes to the oxidation treatment of components of sidestream smoke.