Method for manufacturing a chip card, comprising: - producing an antenna for electromagnetic coupling with a contactless card-reader device, the antenna having at least two ends , - laminating at least two layers of plastic, between which layers the antenna is positioned, - introducing, into a cavity formed in at least one layer of plastic, a chip card module including a substrate having a first main face and a second main face, with conductive tracks at least on the first main face of the substrate , this first face of the substrate having at least one conductive track set apart for a temporary electrical connection with a contact card-reader device, characterized in that it furthermore includes - providing a connection unit having a flexible film comprising a substrate , called substrate of the connection unit, and a conductive layer , said substrate of the connection unit having a first main face and a second main face, the conductive layer being colaminated on one of these main faces, this conductive layer including at least one connection pad having a first portion and a second portion that are connected electrically to one another, the connection unit including a solder material deposited at least on the second portion , over a thickness of between 0.02 and 0.5 mm, before being laminated between the layers of plastic, - connecting one of the ends of the antenna to the first portion of the conductive layer of the connection pad , and - connecting one of the conductive tracks of the module to the second portion of the conductive layer of the connection pad , this second portion having a plurality of perforations . - producing an antenna for electromagnetic coupling with a contactless card-reader device, the antenna having at least two ends , - laminating at least two layers of plastic, between which layers the antenna is positioned, - introducing, into a cavity formed in at least one layer of plastic, a chip card module including a substrate having a first main face and a second main face, with conductive tracks at least on the first main face of the substrate , this first face of the substrate having at least one conductive track set apart for a temporary electrical connection with a contact card-reader device, characterized in that it furthermore includes - providing a connection unit having a flexible film comprising a substrate , called substrate of the connection unit, and a conductive layer , said substrate of the connection unit having a first main face and a second main face, the conductive layer being colaminated on one of these main faces, this conductive layer including at least one connection pad having a first portion and a second portion that are connected electrically to one another, the connection unit including a solder material deposited at least on the second portion , over a thickness of between 0.02 and 0.5 mm, before being laminated between the layers of plastic, - connecting one of the ends of the antenna to the first portion of the conductive layer of the connection pad , and - connecting one of the conductive tracks of the module to the second portion of the conductive layer of the connection pad , this second portion having a plurality of perforations . <EOS>