Aerosol-generating article having bridging element with basis weight

Abstract

An aerosol-generating article ( 10 ) comprising a rod ( 20 ) comprising an aerosol-generating substrate ( 22 ); a filter ( 30 ) in axial alignment with the rod ( 20 ); a bridging element ( 40 ) comprising a first wrapper ( 42 ), the first wrapper circumscribing the rod ( 20 ) and the filter and securing the filter to the rod; and a cavity ( 44 ) located between the rod and the filter, the cavity ( 44 ) being partially delimited by the inner surface of the first wrapper ( 42 ) in a first portion of the bridging element ( 40 ), wherein the first portion of the bridging element ( 40 ) has a basis weight of 50 grams per square meter or greater.

1 . An aerosol-generating article comprising:
 a rod comprising an aerosol-generating substrate;   a filter in axial alignment with the rod;   a bridging element comprising a first wrapper, the first wrapper circumscribing the rod and the filter and securing the filter to the rod; and   a cavity located between the rod and the filter, the cavity being partially delimited by the inner surface of the first wrapper in a first portion of the bridging element,   wherein the first portion of the bridging element has a basis weight of 50 grams per square meter or greater.   
     
     
         2 . The aerosol-generating article according to  claim 1 , wherein the cavity has a length of at least 2 millimetres. 
     
     
         3 . The aerosol-generating article according to  claim 1 , wherein the first portion of bridging element has a basis weight of 70 grams per square meter or greater. 
     
     
         4 . The aerosol-generating article according to  claim 1 , wherein the first portion of the bridging element has a thickness of between 50 micrometres and 140 micrometres. 
     
     
         5 . The aerosol-generating article according to  claim 1 , wherein the downstream end of the cavity is delimited by the rod and the upstream end of the cavity is delimited by the filter. 
     
     
         6 . The aerosol-generating article according to  claim 1 , wherein the first portion of the bridging element extends along the length of the bridging element by a distance of at least 1.2 times the length of the cavity. 
     
     
         7 . The aerosol-generating article according to  claim 1 , wherein the first portion of the bridging element extends a distance of between 4 millimetres and 10 millimetres along the length of the bridging element. 
     
     
         8 . An aerosol-generating article according to any one of the preceding claims, wherein the filter is circumscribed by the first portion of the bridging element. 
     
     
         9 . The aerosol-generating article according to  claim 1 , wherein the rod is circumscribed by the first portion of the bridging element. 
     
     
         10 . The aerosol-generating article according to  claim 1 , wherein the bridging element comprises a single wrapper. 
     
     
         11 . The aerosol-generating article according to  claim 1 , wherein the bridging element comprises a second wrapper circumscribing the first wrapper. 
     
     
         12 . The aerosol-generating article according to  claim 1 , wherein the inner surface of the first wrapper in the first portion of the bridging element extends circumferentially around the cavity by a distance of greater than 5 millimetres. 
     
     
         13 . The aerosol-generating article according to  claim 1 , wherein the inner surface of the first wrapper in the first portion of the bridging element has a surface area of greater than 25 millimetres squared. 
     
     
         14 . A container comprising a plurality of aerosol-generating articles, wherein at least 50 percent of the aerosol-generating articles in the container are aerosol-generating articles according to  claim 1 . 
     
     
         15 . A method of manufacturing an aerosol-generating article comprising:
 providing a rod comprising an aerosol-generating substrate;   providing a filter;   providing a bridging element comprising a first wrapper; and   securing the filter to the rod using the bridging element such that the first wrapper circumscribes the rod and the filter in a spaced-apart relationship to form a cavity between the rod and the filter, the cavity being partially delimited by the inner surface of the first wrapper in a first portion of the bridging element,   wherein the first portion of the bridging element has a basis weight of 50 grams per square meter or higher.