FILTER MATERIALS AND FILTERS MADE THEREFROM

摘要

The present invention relates to filter material for inclusion in a smoking article, wherein the filter material is in the form of a fibrous tow or a non-woven sheet comprising fine cellulose acetate fibres having a mean diameter of from about 1 μm to about 15 um. The invention also relates to processes for preparing filter material for inclusion in a smoking article, the filter material comprising fine cellulose acetate fibres having a mean diameter of from about 1 μm to about 15 μm. The invention further relates to filters or filter elements comprising the filter material, smoking articles comprising the same, and use of the filter material in smoke filtration.