Aerosol generating system

Abstract

A solid aerosol precursor for an aerosol forming article is provided. The solid aerosol precursor comprises a sheet of aerosol forming substrate. The sheet has a longitudinal length and transverse width. The sheet is embossed with a 2-dimensional pattern of embossed regions and the sheet is separated along the longitudinal dimension into a plurality of strips. The strips are gathered together thereby forming the precursor.

1 . A solid aerosol precursor for an aerosol forming article, the precursor being formed from a sheet of aerosol forming substrate, the sheet having a longitudinal length and transverse width;
 wherein the sheet is embossed with a 2-dimensional pattern of embossed regions the 2-dimensional pattern being an array of embossed regions arranged across the sheet;   wherein the sheet is separated along the longitudinal dimension into a plurality of strips;   and wherein the strips are gathered together thereby forming the solid aerosol precursor.   
     
     
         2 . A precursor according to  claim 1  wherein the 2-dimensional pattern of embossed regions has a transverse periodicity in the transverse dimension, and a longitudinal periodicity in the longitudinal dimension. 
     
     
         3 . A precursor according to  claim 2 , wherein the transverse periodicity is different from the longitudinal periodicity. 
     
     
         4 . A precursor according to  claim 2 , wherein the transverse periodicity is substantially equal to the longitudinal periodicity. 
     
     
         5 . A precursor according to  claim 4 , wherein the transverse periodicity is substantially equal to the width of each of the plurality of strips. 
     
     
         6 . A precursor according to  claim 1 , wherein each embossed region has a generally circular shape. 
     
     
         7 . A precursor according to  claim 1 , wherein each embossed region has a generally elongate shape. 
     
     
         8 . A precursor according to  claim 7 , wherein at least one of the elongate embossed regions is inclined at an orientation angle to the longitudinal axis of the strip, wherein the orientation angle is between 0 and 180 degrees. 
     
     
         9 . A precursor according to  claim 8 , wherein a first embossed region is orientated at a first orientation angle to the longitudinal axis of the respective strip, and a second embossed region is orientated at a second orientation angle to the longitudinal axis of the respective strip, wherein the first and second orientation angles are different. 
     
     
         10 . A precursor according to  claim 9 , wherein the first and second embossed regions are located on adjacent strips of the sheet. 
     
     
         11 . A precursor according to  claim 1 , wherein a first strip includes a first sequence of embossed regions and a second strip includes a second sequence of embossed regions, and wherein the first sequence is longitudinally offset from the second sequence. 
     
     
         12 . A precursor according to  claim 11 , wherein the first and second strips are comprised within a repeating unit, wherein the repeating unit is repeated across a transverse dimension of the sheet. 
     
     
         13 . An aerosol forming article including an aerosol precursor according to  claim 1 , the aerosol forming article having an upstream end and a downstream end. 
     
     
         14 . The aerosol forming article of  claim 13 , including an aperture located immediately downstream of the precursor. 
     
     
         15 . A aerosol forming article according to  claim 14  wherein the aperture is an upstream lumen of a bore. 
     
     
         16 . A precursor according to  claim 2 , wherein the transverse periodicity is substantially equal to the width of each of the plurality of strips. 
     
     
         17 . A precursor according to  claim 3 , wherein the transverse periodicity is substantially equal to the width of each of the plurality of strips.