An aerosol generating article includes: an aerosol generating unit including an aerosol generating material; a tobacco filling unit arranged at a downstream end of the aerosol generating unit; a cooling unit arranged at a downstream end of the tobacco filling unit and configured to cool an aerosol; and a thread filter arranged at a downstream end of the cooling unit and including a filter portion and a thread portion which have different flow rates of the aerosol.

A vapor-generating article comprises a plurality of segments assembled in the form of a rod. The segments include a vapor-forming segment and a vapor-cooling segment located downstream of the vapor-forming segment within the rod. The vapor-cooling segment comprises a crimped cellulose ester (CE) film. The crimped CE film may comprise cellulose acetate propionate, perforations, or both.

A filter material for manufacturing a segment of a smoking article is described. The filter material includes a hydro-entangled nonwoven, which includes fibers. The fibers are selected from the group consisting of pulp fibers, fibers of regenerated cellulose and mixtures thereof. These fibers are contained in the nonwoven in an amount of 50% to 100% of the mass of the hydro-entangled nonwoven. The nonwoven is in the form of a web, has a longitudinal direction in the running direction of the web, a cross direction orthogonal thereto and lying in the plane of the web and a thickness direction orthogonal to longitudinal direction and the cross direction. The nonwoven is shaped to have a wave structure in the plane formed by the cross direction and the thickness direction with a wave height from 50 m to 1000 m and a wave length from 150 m to 5000 m.