A Smoking Article or an Aerosol Generating Product

Abstract

A smoking article or an aerosol generating product comprising a filter arrangement comprising a first filter section and a second filter section, the second filter section being located downstream of the first filter section; and a ventilation arrangement configured to provide a user controllable level of ventilation into the first filter section; wherein a resistance to gaseous flow through the length of the second filter section is lower than a resistance to gaseous flow through the length of the first filter section; and the first filter section comprising filter material and one or more capsules comprising an additive.

1 .- 34 . (canceled) 
     
     
         35 . A filter for a smoking article or an aerosol generating product comprising:
 a filter arrangement comprising a first filter section and a second filter section, the second filter section being located downstream of the first filter section; and   a ventilation arrangement configured to provide a user controllable level of ventilation into the first filter section;   wherein a resistance to gaseous flow through the length of the second filter section is lower than a resistance to gaseous flow through the length of the first filter section; and   the first filter section comprising filter material and one or more capsules comprising additive.   
     
     
         36 . A smoking article or aerosol generating product comprising a filter as claimed in  claim 35 . 
     
     
         37 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the first filter section has a first tow weight of fibrous filtration material, and the second filter section has a second tow weight of fibrous filtration material; and
 the second tow weight of fibrous filtration material is lower than the first tow weight of fibrous material.   
     
     
         38 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the pressure drop per unit length of the first filter section is more than 5 mmH2O/mm, and the pressure drop per unit length of the second filter section is less than 5 mmH2O/mm. 
     
     
         39 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the resistance to gaseous flow through the second filter section is more than 15 times lower than the resistance to gaseous flow through the first filter section. 
     
     
         40 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the first filter section is formed from a first homogenous filtration material, and the second filter section is formed from a second homogenous filtration material. 
     
     
         41 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the second filter section is separate from the first filter section, and/or moveable relative to the first filter section to control the ventilation into the first filter section. 
     
     
         42 . The smoking article or aerosol generating product as claimed in  claim 36 , further comprising a sleeve configured to move relative to the first filter section, wherein:
 (a) the second filter section is fixed within the sleeve, and the level of ventilation is varied by altering a position of the sleeve relative to the first filter section, and/or   (b) the sleeve is rotatable with respect to the first filter section, and the level of ventilation is varied by altering an angular position of the sleeve relative to the first filter section.   
     
     
         43 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the first filter section has a length of 5 to 25 mm, the second filter section has a length of 5 to 25 mm, and/or the ventilation arrangement provides ventilating air at 6 to 35 mm from a mouth end of the smoking article. 
     
     
         44 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the first and second filter sections comprise tow filaments, and the first filter section differs from the second filter section by one or more of: tow weight, number of tow filaments in unit volume, cross-section of tow filaments and degree of crimping. 
     
     
         45 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the second filter section comprises at least one air passage extending longitudinally through the length thereof. 
     
     
         46 . The smoking article or aerosol generating product as claimed in  claim 45 , wherein the air passage has a diameter of between 1 and 7 mm. 
     
     
         47 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the second filter section comprises fibrous filtration material formed having an annular cross section. 
     
     
         48 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the second filter section comprises a tube of fibrous filtration material and the air passage extends along a central longitudinal axis through the length of the second filter section. 
     
     
         49 . The smoking article or aerosol generating product of  claim 36 , wherein the capsule or capsules contain flavourants. 
     
     
         50 . The smoking article or aerosol generating product as claimed in  claim 49 , wherein the flavourant is liquid. 
     
     
         51 . The smoking article or aerosol generating product as claimed in any  claim 36 , wherein the filter material of the first filter section has fibers having about 3.0 denier per filament (dpf) to about 10.0 dpf and/or a total denier of from about 12,000 to about 40,000. 
     
     
         52 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the pressure drop of the first filter section, before the capsule is burst, is from about 85 mm/Wg to about 100 mm/Wg. 
     
     
         53 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the circumference of the filter material of the first filter section is from about 14 mm to about 28 mm, from about 16 mm to about 18 mm, from about 19 mm to about 22 mm, or from about 23 mm to about 25 mm. 
     
     
         54 . The smoking article or aerosol generating product as claimed in  claim 36 , wherein the capsules:
 (a) have a burst strength of from about 14 N to about 18 N;   (b) have a diameter of from about 2.8 mm to about 3.0 mm; or   (c) are spherical and have a diameter of from about 2.7 mm to about 3.1 mm.