The present invention relates to the field of overmolded composites structures and processes for their preparation, particularly it relates to the field of overmolded polyamide composite structures. The disclosed overmolded composite structures comprise i) a first component having a surface, which surface has at least a portion made of a surface resin composition, and comprising a fibrous material selected from non-woven structures, textiles, fibrous battings and combinations thereof, said fibrous material being impregnated with a matrix resin composition, ii) a second component comprising an overmolding resin composition, wherein said second component is adhered to said first component over at least a portion of the surface of said first component, and wherein the surface resin composition is selected from polyamide compositions comprising a blend of (A); one or more fully aliphatic polyamides selected from group (I) polyamides having a melting point of less than 230 DEG C, and (B) one or more polyamides selected from group (II) polyamides having a melting point of at least 250 DEG C, and wherein the matrix resin composition is independently selected from (B) or independently selected from blends of (A) and (B).