Filter Element For A Smoking Article

Abstract

A filter element for a smoking article has one end for connection to a rod element of smokeable material and an opposite end for insertion into a mouth of a user. The filter element includes: one or more filter segments provided on or arranged along a longitudinal axis of the filter element, at least one of the filter segments including a filter material; a wrapper which surrounds and wraps the one or more filter segments; and a liquid-filled breakable capsule arranged within one of the one or more filter segments, the capsule having a rupture point at which the capsule is designed to break or rupture upon application of external force to release liquid contained therein. The capsule is arranged in the one filter segment with the rupture point located at a first distance along the longitudinal axis from the one end of the filter element.

1 . A smoking article, comprising a rod element of smokeable material connected to a filter element by a tipping wrapper, the filter element having a first end for connection to the rod element and an opposite, second end for insertion into a mouth of a user, the filter element comprising:
 a liquid-filled directional capsule arranged between the first and second ends of the filter element, the directional capsule having a rupture region at which the directional capsule is designed to break upon application of external force to release liquid contained therein,   wherein the smoking article comprises a ventilation zone arranged between the first end of the filter element and the rupture region of the directional capsule.   
     
     
         2 . The smoking article according to  claim 1 , wherein the ventilation zone comprises a plurality of perforations provided through the tipping wrapper and/or extending into a portion of the filter element. 
     
     
         3 . The smoking article according to  claim 1 , wherein a distance between the rupture region of the directional capsule and the ventilation zone is at least 1 mm. 
     
     
         4 . The smoking article according to  claim 1 , wherein a distance between the first end of the filter element and the ventilation zone is at least 1 mm. 
     
     
         5 . The smoking article according to  claim 1 , wherein the directional capsule contains a liquid volume of at least 0.05 ml. 
     
     
         6 . The smoking article according to  claim 1 , wherein the filter element further comprises a filter wrapper at least partly extending between the first and second ends of the filter element. 
     
     
         7 . The smoking article according to  claim 6 , wherein the basis weight of the filter wrapper ( 8 ) is of at least 40 g/m 2 . 
     
     
         8 . The smoking article according to  claim 6 , wherein the Cobb water absorption of the filter wrapper is of no more than 35 g/m 2 . 
     
     
         9 . The smoking article according to  claim 1 , wherein the Cobb water absorption of the tipping wrapper is of no more than 25 g/m 2 . 
     
     
         10 . A filter element for a smoking article, the filter element having a first end for connection to a rod element of smokeable material and an opposite, second end for insertion into a mouth of a user, the filter element comprising:
 a liquid-filled directional capsule arranged between the first and second ends, the directional capsule having a rupture region at which the directional capsule is designed to break upon application of external force to release liquid contained therein,   wherein the filter element comprises a ventilation zone arranged between the first end and the rupture region of the directional capsule.   
     
     
         11 . The filter element according to  claim 10 , wherein a distance between the rupture region of the directional capsule and the ventilation zone is at least 1 mm. 
     
     
         12 . The filter element according to  claim 10 , wherein a distance between the first end of the filter element and the ventilation zone is at least 1 mm. 
     
     
         13 . The filter element according to  claim 10 , wherein the directional capsule contains a liquid volume of at least 0.05 ml. 
     
     
         14 . The filter element according to  claim 10 , further comprising a filter wrapper at least partly extending between the first and second ends of the filter element. 
     
     
         15 . The filter element according to  claim 14 , wherein the Cobb water absorption of the filter wrapper is less than about 30 g/m 2 .