초록 ▼

A cigarette sidestream smoke treatment material made from a sheet of non-combustible active components provides a porous structure capable of treating sidestream smoke. The treatment material, as used in combination with a cigarette, provides a low sidestream smoke emitting cigarette unit. The mater

A cigarette sidestream smoke treatment material made from a sheet of non-combustible active components provides a porous structure capable of treating sidestream smoke. The treatment material, as used in combination with a cigarette, provides a low sidestream smoke emitting cigarette unit. The material has a porosity which encourages a conventional free-burn rate of a conventional cigarette. The material may comprise a sorbent capable of sorbing components of the sidestream smoke, and an oxygen storage component which releases oxygen at free-burn rate temperatures to ensure that conventional free-burn rate is maintained and to enhance the oxidation treatment of the adsorbed non-aqueous components. Preferably, an oxidation catalyst is included in the material and most desirably the oxygen storage component may also function as the oxidation catalyst. Particularly preferred materials which perform the dual function are oxides of cerium.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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 pap

[ What is claimed is:] [1.]1. 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.