APPARATUS FOR PRODUCING THE INSULATING LAYER OF A COAXIAL CABLE

摘要

S-2-19517M/KK/78 A spiral insulation rib between the inner and outer conductors of a coaxial cable is provided having a rectangular cross section by pointing the extrusion slit approximately in the direction of the spiral winding and by providing side surfaces of the extrusion slit which are concave so that the width of the slit is smallest at the center thereof and gradually increased toward either end.