An improvement applicable to a method for the production of a multi-layer identity card of plastic wherein the card comprises one or more card core layers bonded under the action of pressure and heat and printed on either side or on opposite sides with a covering layer applied to the printed side or sides of the card core. In accordance with the improvement a thermoplastic polymer adhesive is applied between and in direct contact with each covering layer and the respective printed side of the card core, the thermoplastic adhesive coating possessing at least one additive that increases the friction between the covering layer and the printed card core during lamination so as to prevent displacement of the printed card core in relation to the covering layer or layers.