MANUFACTURE OF FLAT CABLE WITH SHIELD

PURPOSE:To stabilize capacitance between an aluminum shield and a conductor by forming a roll in a shape of a concave drum with its central part recessed and cooled to a constant temperature by means of a cooling medium, thereby making the close contact force between the aluminum shield and an insulator uniform. CONSTITUTION:Using a pair of concave drum-shaped rolls 1a, uniform cool air flow a generated with a cool air device is blown through a cool air nozzle 4 in the direction of the roll surface. With this arrangement, a difference is produced in the pressing forces between the central part and edges of a flat cable with shield on which a temperature difference is produced by the roll 1a, and the close contact force between an aluminum shield and an insulator becomes uniform. As the roll 1a is always cooled with the cool air flow 3, the temperature does not rise as the time passes, producing no change in the close contact force, This makes it possible to stabilize capacitance between the aluminum shield and a conductor.