Method of molding insulating disks on coaxial-cable wire

A method of molding a succession of discrete bodies on an elongated flexible element using a plurality of mold pairs together forming an array having an outer surface and each having a mold cavity and an inlet between the respective cavity and said surface, said method comprising the steps of:

• continuously displacing said array past the end of a nozzle and thereby sequentially aligning said inlets with said end;
• continuously feeding plastified and hardenable resin material of a predetermined viscosity and at a predetermined temperature at an adjustable feed pressure to said end, whereby said nozzle is urged away from said surface with a reaction force determined by said feed pressure, said viscosity, and said temperature;
• maintaining spacing of said nozzle from said surface generally constant by regulating a biasing force urging said nozzle toward said surface during relative displacement of said nozzle and said mold pairs so that when said end aligns with an inlet it injects said resin material therethrough into the respective cavity and forms a body therein and a sprue integral therewith in the respective inlet, and so that when said end is not aligned with an inlet said material escapes laterally from between said end and said surface and forms on said surface a continuous film unitary with the previously formed sprues and having a substantially constant thickness;
• sequentially closing said mold pairs on successive spaced-apart portions of said flexible element before injection of said material into the respective cavities and sequentially opening said mold pairs after hardening of said material in the respective cavities;
• and
• separating said sprues and said film from said bodies after opening of the respective mold pairs.