HEAT SOURCE FOR A SMOKING ARTICLE

摘要

A heat source 20, when ignited, produces hot gases which release flavourant vapours from a flavourant bed 21. The mixed gases pass through an expansion chamber 12 to a mouthpiece 13. The heat source comprises metal carbides, preferably iron carbides Fez C and/or Fe5 C2, which ignite at relatively low temperatures (less than 550 DEG C) and liberate substantially no carbon monoxide. The carbides are preferably in particulate form and may be mixed with carbon and held together by a binder. The heat source 20 is preferably cylindrical with air passages 22 running through it.