Heating Article Comprising a Microstructured Heat-Stable Coating and Method of Manufacturing Such an Article

A method of manufacturing a heating article comprising the following steps:

• a) providing a substrate comprising two opposite sides, then
• b) producing a heat-stable coating comprising:
• formation of, on at least one of the sides of the substrate, at least a base layer comprising at least one heat-stable binder, and formation of, on all or part of the base layer), a microstructured layer partially or totally comprising a heat-stable binder of the same nature as that of the base layer, the formation of the microstructured layer comprising inkjet printing by projection at determined positions (PI, P2, . . . , PN) of microdroplets of a dispersion in a solvent of a structuring material, said printing being achieved with a micrometric printing pitch (d), and
• c) curing the heat-stable coating to sinter the binder of the base layer integrally with the binder of the microstructured layer, such as to solidify the assembly and form a relief with patterns formed by local variations in the surface level of the heat-stable coating.