In a method and a device for laying busbars (5, 31, 33) in films, in which a bundle of heating wires (32) and at least two busbars (5, 31, 33), each electrically contacting at least one subset of the heating wires (32), are applied to at least one base film (3, 14-17, 21-24, 30), wherein the busbars (5, 31, 33) are each guided by a guide unit (35) in the direction of a pressure roller (1) and are pressed by the pressure roller (1) in the direction of the base film (3, 14-17, 21-24, 30) and are cut by a cutting device (8), it is proposed that the busbars (5, 31, 33) are each cut before the pressure roller (1) in the supply direction.