Abstract: The present invention relates to an elongated smoking article (100) that extends in a longitudinal direction (L). The elongated smoking article (100) comprises a heatable tobacco material (11) and a filter element (20) aligned with the smoking body (10). The filter element (20) has at least one filter portion (30) and at least one hollow section (40), wherein the at least one hollow section (40) is disposed between the smoking body (10) and at least one of the at least one filer portion (30). The filter element (20) is sheathed by a tipping paper (50) together with the smoking body (10). The filter portion (30) comprises a material for reducing unwanted substances from an aerosol and a hollow section (40) has a barrier layer (51) disposed on its inner surface (41) and a carrier layer (52) disposed on the barrier layer (51). The carrier layer (52) contains a volatile additive (80) and the barrier layer (51) is impermeable to the volatile additive (80).

Abstract: The present disclosure provides an aerosol-forming article comprising an aerosol-forming substrate and an axially adjacent, downstream filter arrangement. In some implementations, the filter arrangement comprises an upstream filter element, an intermediate filter element and a terminal filter element. The upstream and terminal filter elements may be independently selected from a solid filter element and a hollow bore filter element. The intermediate filter element may be a hollow bore filter element having a greater bore diameter than any other hollow bore filter element in the filter arrangement.

Abstract: The present disclosure relates to an aerosol-forming article (e.g., a smoking substitute article such as an HNB consumable) comprising an aerosol-forming substrate and a filter element wherein the filter element is at least partly circumscribed by a flavored sleeve.

Abstract: The present disclosure relates to smoking substitute consumables, including an aerosol-forming article comprising an aerosol-forming substrate and a terminal filter element at a downstream axial end of the article/consumable. The terminal filter element may comprise a hollow bore extending from an upstream axial end of the terminal filter element to a downstream axial end of the terminal filter element. The hollow bore may be off-set from the axial centre of the terminal filter element.