Processing method for inserting electronic devices that are suitable for communicating in radio frequency into respective rubber sleeves, wherein each thereof comprises two overlapping strips (6, 7) that enclose therebetween a corresponding electronic device that is suitable for communicating in radio frequency; the processing method comprises the steps of: advancing a first rubber belt preferably arranged horizontally along an insertion path by means of a conveyor, wherein the first rubber belt is intended to form a first strip of each sleeve; placing the electronic devices that are suitable for communicating in radio frequency upon an upper surface of the first rubber belt by means of a first feed device; placing, by means of a second feed device, upon the upper surface of the first rubber belt and upon each electronic device that is suitable for communicating in radio frequency and was previously placed, a second rubber belt that completely covers the electronic devices that are suitable for communicating in radio frequency, wherein the second rubber belt is intended to form a second strip of each sleeve; cutting out, by means of a cutting device arranged downstream of the second feed device along the direction of travel of the first rubber belt, the two rubber belts (10, 14) in performing a perimeter cut around each electronic device that is suitable for communicating in radio frequency in order to separate each sleeve containing a respective electronic device that is suitable for communicating in radio frequency from the two rubber belts (10, 14); and causing a pressure roller to roll over the second rubber belt downstream of the second feed device in order to press the second rubber belt against the first rubber belt the processing method is characterized in that the pressure roller is caused to complete a forward stroke in one direction and a return stroke in the opposite direction, the conveyor advances the first rubber belt according to an intermittent motion law that provides for a cyclic alternation of motion phases during which the first rubber belt is advanced and stop phases during which the first rubber belt remains stationary; and the pressure roller is caused to roll over the second rubber belt when the first rubber belt is stationary. advancing a first rubber belt preferably arranged horizontally along an insertion path by means of a conveyor, wherein the first rubber belt is intended to form a first strip of each sleeve; placing the electronic devices that are suitable for communicating in radio frequency upon an upper surface of the first rubber belt by means of a first feed device; placing, by means of a second feed device, upon the upper surface of the first rubber belt and upon each electronic device that is suitable for communicating in radio frequency and was previously placed, a second rubber belt that completely covers the electronic devices that are suitable for communicating in radio frequency, wherein the second rubber belt is intended to form a second strip of each sleeve; cutting out, by means of a cutting device arranged downstream of the second feed device along the direction of travel of the first rubber belt, the two rubber belts (10, 14) in performing a perimeter cut around each electronic device that is suitable for communicating in radio frequency in order to separate each sleeve containing a respective electronic device that is suitable for communicating in radio frequency from the two rubber belts (10, 14); and causing a pressure roller to roll over the second rubber belt downstream of the second feed device in order to press the second rubber belt against the first rubber belt the processing method is characterized in that the pressure roller is caused to complete a forward stroke in one direction and a return stroke in the opposite direction, the conveyor advances the first rubber belt according to an intermittent motion law that provides for a cyclic alternation of motion phases during which the first rubber belt is advanced and stop phases during which the first rubber belt remains stationary; and the pressure roller is caused to roll over the second rubber belt when the first rubber belt is stationary.