Segmented smoking article with substrate cavity

A cigarette comprising:

• a lighting end and a mouth end;
• a mouth end segment disposed at the mouth end;
• a tobacco rod disposed between the lighting end and the mouth end segment;
• an aerosol-generation system disposed between the lighting end and the tobacco rod, the aerosol-generation system including a heat generation segment disposed at the lighting end and including a heat source configured to be activated by ignition of the lighting end and an insulation layer of flame-retardant material disposed around the heat source;
• and
• an aerosol-generating segment including a tobacco pellet substrate and incorporating aerosol-forming material, the substrate being disposed within a substrate cavity defined between the heat generation segment and the tobacco rod, where the tobacco pellet substrate contacts the heat generation segment at one end of the substrate cavity and contacts the tobacco rod at the other end of the substrate cavity;
• a wrapping material circumscribing at least a portion of the heat generation segment, the aerosol-generating segment, and at least a portion of the tobacco rod;
• wherein the wrapping material comprises a foil strip circumferentially encompassing and extending lengthwise along at least a lengthwise portion of the substrate cavity and overlapping at least a lengthwise portion of the heat generation segment;
• wherein the wrapping material comprises a paper material, and the foil strip is laminated to a surface of the paper material;
• and
• wherein the wrapping material comprises a first portion comprising unlaminated paper material not covered by the foil strip, a second portion extending from the first portion and comprising the foil strip laminated to the paper material surface, where the foil strip directly contacts and circumferentially encompasses the tobacco pellet substrate, and a third portion also comprising unlaminated paper material not covered by the foil strip.