Abstract: An element for use in a smoking article, the element comprising a longitudinally extending core; wherein the longitudinally extending core comprises a filtering material; wherein the filtering material comprises a paper and/or other biodegradable material; and wherein the filtering material further comprising a hydrophobic material.

Abstract: A multi-segment filter comprising a first and second filter segment; wherein the first filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core comprising embossed paper filtering material and/or embossed other biodegradable filtering material with a particulate additive embedded therein; and wherein the second filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core comprising paper filtering material or other biodegradable filtering material.

Abstract: The present invention provides a mouthpiece or filter element (e.g., for a smoking article such as a cigarette, a tobacco heating product, a HNB product) comprising a longitudinally extending (e.g., substantially cylindrical) hollow tube of paper; a filler layer comprising paper filtering material and/or other biodegradable filtering material engaged around the hollow tube along the full (e.g., longitudinal) length of the hollow tube; and a wrapper (e.g., plugwrap) engaged around the filler layer along the full (e.g., longitudinal) length of the filler layer, wherein the hollow tube, the filler layer and the wrapper are the same length.

Abstract: There is disclosed a mouth piece, filter element or cooling element for an aerosol generating article comprising: a first section comprising a longitudinally extending core of filtering material having an outer surface and an inner surface, the inner surface defining a channel extending longitudinally from an end of the first section; a second section comprising a longitudinally extending core of filtering material; wherein the first section and the second section are adjacent and integral; wherein the channel has a non-circular transverse cross section which varies in the longitudinal direction by rotating about a longitudinal axis of the first section.

Abstract: There is disclosed a mouth piece, filter element or cooling element 100 comprising: a longitudinally extending core of filtering material 102; one or more channels 104 extending longitudinally from an end of the core 102; wherein the or each channel 104 has a non-circular transverse cross section which varies in the longitudinal direction by rotating about a longitudinal axis I of the mouth piece, filter element or cooling element 100.

Abstract: A tobacco smoke filter or filter element including a longitudinally extending core of tobacco smoke filtering material of circumference 14 to 17 mm which includes a channel which extends longitudinally from an end of the core; wherein the core further includes a plasticiser in an amount of 17 to 19% by weight of the tobacco smoke filtering material.

Abstract: A tobacco smoke filter or filter element including a longitudinally extending core of tobacco smoke filtering material of circumference 14 to 17 mm which includes a channel which extends longitudinally from an end of the core; wherein the core further includes a plasticiser in an amount of 17 to 19% by weight of the tobacco smoke filtering material.