| 摘要 |
[Problem] To provide a cigarette filter that can achieve both strength in a dry state and disintegration in a wet state. [Solution] This cigarette filter comprises a filter plug containing a cellulose ester staple fiber, a pulp, and an alkali metal salt of a water-soluble anionic polymer. The filter plug has an alkali metal content of 2 to 100 µmol per gram of the filter plug. The water-soluble anionic polymer may comprise at least one member selected from the group consisting of a polyacrylic acid and a polysaccharide having a carboxyl group. |
