Smoking article filter with functional material

摘要

A filter (20) for a smoking article (10) having a functional portion (28). The functional portion (28) includes a plurality of disc elements (30, 31) stacked together to form a cylindrical element. The functional portion (28) includes a functional material (32) retained by the plurality of disc elements (30). Each of the disc elements (30, 31) includes non-woven fibres.