METHOD OF PRODUCING A CONTACTLESS CHIP CARD OR A CONTACT/CONTACTLESS HYBRID CHIP CARD WITH IMPROVED FLATNESS

摘要

The invention relates to a method of producing a chip card comprising an antenna support, two card bodies and an electronic module or a chip which is connected to the antenna. The inventive method comprises: a first lamination step consisting in soldering two thermoplastic sheets (32, 34 or 62, 64) to each side of the antenna support (10 or 40) at a temperature that makes the material used for said sheets soften and flow completely, such that any differences in the thickness of the antenna support disappear; and a second lamination step which is performed after the time required for the thermoplastic sheets (32, 34 or 62, 64) to solidify, said second step consisting in hot press soldering two plastic layers (36, 38 or 66, 68) forming the card bodies to the flat plastic-coated faces of the uniform-thickness, plastic-coated antenna support (30 or 60).