The method of fabricating an iron-on interlining consists in silkscreen printing to deposit spots directly on the surface of a woven or non-woven fabric, which spots are of a polymer that forms a protective underlayer, in depositing an outer layer of hot-stick polymer on the underlayer, and in subjecting the fabric to heat treatment so as to melt said hot-stick polymer onto said protective underlayer. The polymer forming the underlayer is a polymer that is not cured but that is curable by applying electron bombardment, and, in addition, it is of polymeric structure that is compatible with the structure of the hot-stick polymer of the outer layer. After heat treatment, the interlining is subjected to the action of irradiation, in particular electron bombardment, so as to cure the polymer of said underlayer. The polymer of the underlayer and the polymer of the outer layer preferably have the same polymeric structure, being made of copolyamide or of polyethylene.