Aerosol-generating article with composite susceptor assembly

Abstract

An aerosol-generating article for generating an inhalable aerosol upon heating is provided, the aerosol-generating article including: an aerosol-generating rod including an aerosol-generating substrate; and a susceptor assembly including: at least one strand of susceptor material, the at least one strand of susceptor material being twisted such as to be laid helically around a longitudinal axis of the susceptor assembly, and an aerosol-generating element including at least one strand of a porous nontobacco material carrying an aerosol-forming composition comprising at least 35 percent by weight of an aerosol former, the at least one strand of the aerosol-generating element being twisted with the at least one strand of susceptor material, and the susceptor assembly being thermally coupled with the aerosol-generating substrate, the susceptor assembly extending longitudinally within the aerosol-generating rod and being embedded within the aerosol-generating substrate. An aerosol-generating system including a heating device and the aerosol-generating article is also provided.

1 .- 14 . (canceled) 
     
     
         15 . An aerosol-generating article for generating an inhalable aerosol upon heating, the aerosol-generating article comprising:
 an aerosol-generating rod comprising an aerosol-generating substrate; and   a susceptor assembly comprising:
 at least one strand of susceptor material, the at least one strand of susceptor material being twisted such as to be laid helically around a longitudinal axis of the susceptor assembly, and 
 an aerosol-generating element comprising at least one strand of a porous nontobacco material carrying an aerosol-forming composition comprising at least 35 percent by weight of an aerosol former, 
 wherein the at least one strand of the aerosol-generating element is twisted with the at least one strand of susceptor material, and 
   wherein the susceptor assembly is thermally coupled with the aerosol-generating substrate, the susceptor assembly extending longitudinally within the aerosol-generating rod and being embedded within the aerosol-generating substrate.   
     
     
         16 . The aerosol-generating article according to  claim 15 , wherein the at least one strand of susceptor material comprises two or more strands of susceptor material twisted together, such that the two or more strands of susceptor material are laid helically around the longitudinal axis of the susceptor assembly, and the at least one strand of the aerosol-generating element is twisted with the two or more strands of susceptor material. 
     
     
         17 . The aerosol-generating article according to  claim 16 , wherein the at least one strand of the aerosol-generating element is also laid helically around the longitudinal axis of the susceptor assembly and held in place by being pinched between at least two of the two or more strands of susceptor material. 
     
     
         18 . The aerosol-generating article according to  claim 16 , wherein the at least one strand of the aerosol-generating element extends substantially parallel to the longitudinal axis of the susceptor assembly to define a core of the susceptor assembly, the two or more strands of susceptor material being laid helically around the at least one strand of the aerosol-generating element. 
     
     
         19 . The aerosol-generating article according to  claim 15 , wherein the at least one strand of susceptor material is a metallic strip, filament, pin, or wire. 
     
     
         20 . The aerosol-generating article according to  claim 15 , wherein the aerosol-forming composition is adsorbed, coated, impregnated, or otherwise loaded onto the porous nontobacco material. 
     
     
         21 . The aerosol-generating article according to  claim 15 , wherein a diameter of the at least one strand of susceptor material is from 0.3 millimetre to 1.5 millimetres. 
     
     
         22 . The aerosol-generating article according to  claim 16 , wherein the susceptor assembly further comprises one or more spacer elements of a nonconductive material, the one or more spacer elements being configured to create gaps between two adjacent ones of the two or more strands of susceptor material, such that respective portions of the two adjacent ones of the two or more strands of susceptor material are at a predetermined distance from one another. 
     
     
         23 . The aerosol-generating article according to  claim 22 , further comprising a secondary aerosol-generating substrate provided in at least one of the gaps. 
     
     
         24 . The aerosol-generating article according to  claim 22 , wherein the one or more spacer elements comprise a bead provided on one of the two or more strands of susceptor material. 
     
     
         25 . The aerosol-generating article according to  claim 22 ,
 wherein the one or more spacer elements comprise a plate comprising one or more openings,   wherein the plate is arranged transversely to the longitudinal axis of the susceptor assembly, and   wherein each one of the one or more openings is configured to receive a corresponding one of the two or more strands of susceptor material.   
     
     
         26 . The aerosol-generating article according to  claim 25 , wherein the plate is circular and the one or more openings are equally spaced about the longitudinal axis. 
     
     
         27 . The aerosol-generating article according to  claim 25 ,
 wherein the one or more spacer elements further comprise a plurality of plates equally spaced along a length of the susceptor assembly, and   wherein each plate comprises one or more openings.   
     
     
         28 . An aerosol-generating system comprising a heating device and an aerosol-generating article according to  claim 15 .