There is provided an adsorbent material comprising a porous carrier material having pores with a diameter greater than 20 nm and carrying additive particles on its external surface, wherein the additive particles comprise an additive and have a diameter of greater than 20 nm. There is also provided a smoking article filter element comprising such an adsorbent material, a smoking article comprising such an adsorbent material, and a method of preparing such an adsorbent material.

Filters and cigarettes include an activated carbon sorbent capable of selectively removing nitric oxide from mainstream tobacco smoke. Methods for making cigarette filters and cigarettes using the activated carbon sorbent and methods for treating mainstream tobacco smoke produced by smoking a cigarette comprising the sorbent are also provided.

A replenishing device for replenishing a flute of a transporter with a rod-like element, wherein the transporter comprises multiple flutes located transversally with respect to a transporting direction and adapted to transport rod-like elements, the replenishing device comprising: a feeding duct for feeding the rod-like element; a rotary replenishing element having an axis of rotation, comprising at least one transferring seat for receiving the rod-like element from the feeding duct in a receiving zone and for transferring the rod-like element to the flute of the transporter in a transferring zone, wherein the rotary replenishing element is adapted to repeatedly pass the same rod-like element through the transferring zone before transferring that rod-like element to the flute of the transporter; and a transferring mechanism for effecting the transfer of the rod-like element from the transferring seat to the flute of the transporter.

A method for manufacturing cigarette filter rods comprises providing a continuous supply of filter material in a direction of travel; forming the filter material into a continuous rod; and rotating a wheel in a vertical plane, in operable communication with the filter material such that a portion of the wheel contacts the filter material at a predetermined location, and such that general direction of travel of the rotating wheel and the filter material, when in contact, are in generally the same direction. The method also comprises providing a lower hopper in operable communication with the rotatable wheel; providing an upper hopper in operable communication with the lower hopper; and wrapping an overwrap material around the filter material. The method further comprises controlling speed of rotation of the wheel relative to feedback from an inspection system; and subdividing the continuous rod at pre-determined intervals.

Cigarette filter rods having individual objects positioned at predetermined intervals therein are prepared by transferring the individual objects from a rotating horizontal pan to a rotating vertical wheel and then depositing the object into a web of filter tow. Each object is positioned within the moving web of tow. The web filter material and the objects positioned within the web are introduced into a rod-forming unit wherein the rod is formed. The rate of feed of the filter tow, the rate of rotation of the horizontal pan and the vertical wheel are controlled relative to one another such that objects are positioned at predetermined intervals along the rod. Cigarette filter elements having well controlled amounts of flavorant contained therein can be made from the rods.

Filters and cigarettes include an activated carbon sorbent capable of selectively removing nitric oxide from mainstream tobacco smoke. Methods for making cigarette filters and cigarettes using the activated carbon sorbent and methods for treating mainstream tobacco smoke produced by smoking a cigarette comprising the sorbent are also provided.

A smoking article assembly apparatus is disclosed. It comprises a first cutting station configured to cut a filter rod into filter segments, a tipping station configured to join the filter segments to tobacco rods so as to form a smoking article assembly, and a second cutting station configured to cut the smoking article assembly in the region of the filter segments so as to form two smoking articles.

The present invention refers to a feeder for components of an aerosol-forming article, the feeder comprising: a plurality of tubular hoppers, each hopper being adapted to receive and to deliver a plurality of components, each hopper including an inlet and an outlet and a channel connecting the inlet and the outlet, each channel having an axis and defining an insert dimension in a direction perpendicular to the axis, the insert dimension being constant along the axis of the channel; -a frame to which the tubular hoppers are fastened and arranged so that their axes are substantially parallel to each other and in series along a transport direction; a delivery drum including a plurality of angularly spaced grooves arranged substantially parallel to said transport direction, said drum being located under the outlets of the tubular hoppers so that components going through said channels are delivered into one of said groves; a motor to rotate said delivery drum; a transport device located under said delivery drum and adapted to transport said components delivered by the delivery drum along the transport direction; and a size change element adapted to vary the insert dimension of the channel of at least one of the plurality of hoppers.

A biodegradable bi-component fiber may include a polyhydroxyalkanoate and/or polylactic acid with cellulose acetate and/or plasticized cellulose acetate for use in a filter material configured for use in a filter of a smoking article. The bi-component fiber may have a sheath-core construction where one component of the bi-component forms the core, and the other component forms the sheath of each fiber. A filter made in accordance with this design may also include non-biodegradable material.

An apparatus for providing rods for use in the manufacture of cigarette filter elements, each rod having individual objects placed at predetermined spaced intervals along the length thereof, comprises means for providing a continuous supply of rod filter material, a first hopper means for providing a reservoir for objects, and a second hopper means for providing a plurality of individual objects. The second hopper means is positioned to receive objects from the first hopper means. The apparatus also comprises a reciprocating screen means between the first hopper means and the second hopper means, means for positioning individual objects from the second hopper to within the supply of filter material at pre-determined spaced intervals, means for forming the filter material into a continuous rod having individual objects positioned at pre-determined spaced intervals within that rod, and means for subdividing the continuous rod at pre-determined intervals.