A spreading head particularly for spreading one or more adhesives or mixtures of adhesives, of the hot-melt or cold type, comprising a body for conveying the one or more adhesives to an extrusion tool; the body has two or more ducts, which are all separate or of which two or more converge, and the tool has one or more first extrusion channels and/or one or more mixing chambers which are connected to one or more second extrusion channels, the first and/or second extrusion channels being optionally mutually superimposed and/or laterally adjacent.