A Smoking Article With Liquid-filled Capsule

Abstract

A smoking article includes a rod element including smokeable material and a filter element having a first end for connection to an end of the rod element and an opposite, second end for insertion into a mouth of a user. A liquid-filled capsule is arranged between the first and second ends of the filter element and the liquid-filled capsule is configured to break upon application of an external force to release the liquid. A tipping wrapper connects the filter element and rod element. The tipping wrapper has a wet tensile strength of at least about 0.15 kN/m. The smoking article is resistant to breakage even after the liquid is released.

1 . A smoking article, comprising:
 a rod element comprising smokeable material;   a filter element having a first end for connection to an end of the rod element and an opposite, second end for insertion into a mouth of a user;   a liquid-filled capsule arranged between the first and second ends of the filter element, the liquid-filled capsule configured to break upon application of an external force to release liquid contained therein; and   a tipping wrapper which connects the filter element and the rod element;   wherein the tipping wrapper has a wet tensile strength of at least 0.15 kN/m.   
     
     
         2 . The smoking article according to  claim 1 , wherein the tipping wrapper has a dry tensile strength of at least 1 kN/m. 
     
     
         3 . The smoking article according to  claim 2 , wherein the dry tensile strength of the tipping wrapper is no more than 5 kN/m. 
     
     
         4 . The smoking article according to  claim 1 , wherein the wet tensile strength of the tipping wrapper is no more than 0.55 kN/m. 
     
     
         5 . The smoking article according to  claim 2 , wherein a dry tensile strength to wet tensile strength ratio is no more than 15. 
     
     
         6 . The smoking article according to  claim 1 , wherein the tipping wrapper is wrapped about the filter element such that a principal stress direction of the tipping wrapper is substantially parallel to a longitudinal axis of the filter element. 
     
     
         7 . The smoking article according to  claim 6 , wherein the principal stress direction is a cross direction parallel to a longitudinal axis of a roll of tipping wrapper material. 
     
     
         8 . The smoking article according to  claim 1 , wherein the liquid-filled capsule is a directional capsule. 
     
     
         9 . The smoking article according to  claim 8 , wherein the directional capsule comprises a predefined rupture region configured to break upon application of the external force, and the rupture region is directed towards the first end of the filter element. 
     
     
         10 . The smoking article according to  claim 8 , wherein the directional capsule comprises a predefined rupture region configured to break upon application of the external force, and the rupture region is directed towards the second end of the filter element. 
     
     
         11 . The smoking article according to  claim 1 , wherein the filter element further comprises fibrous filtration material between the capsule and the first end of the filter element. 
     
     
         12 . The smoking article according to  claim 11 , wherein the fibrous filtration material extends between the capsule and the first end of the filter element at least 7 mm. 
     
     
         13 . The smoking article according to  claim 1 , wherein the capsule contains a liquid volume of at least 0.05 ml. 
     
     
         14 . The smoking article according to  claim 1 , wherein the tipping wrapper comprises:
 fibrous material; and   a wet-strength additive which acts to increase bonding between fibres of the fibrous material.   
     
     
         15 . The smoking article according to  claim 14 , wherein the fibrous material is paper, and the wet-strength additive is selected from a natural resin, a synthetic resin, or a combination thereof.