Process for enamelling wire

Claim 1

A PROCESS FOR CONTINUOUSLY ENAMELLING WIRE WITH A POLYMERIZABLE ENAMEL CONTAINING A SOLVENT, COMPRISING CONTINUOUSLY MOVING SAID WIRE OF ITSELF AT HIGH SPEED AND REPEATING CYCLICALLY THE SEQUENCE OF STEPS OF HEATING THE WIRE TO A DRYING TEMPERATURE BETWEEN THE TEMPERATURE OF THE ENAMEL AT THE TIME OF ITS APPLICATION AND THE POLYMERIZATION TEMPERATURE OF THE ENAMEL; THEN APPLYING SAID ENAMEL INSIDE A CLOSED APPLICATOR ZONE TO THE WIRE AT SAID DRYING TEMPERATURE THEN PASSING THE WIRE THROUGH SURROUNDINGS WHICH ARE AT A LOWER TEMPERATURE THAN SAID DRYING TEMPERATURE SO THAT THE DIRECTION OF HEAT FLOW IS FROM THE WIRE TOWARDS THE SURROUNDINGS THEREBY ENSURING THE FREE EVAPORATION OF SUBSTANTIALLY ALL OF THE SOLVENT WITHOUT PERMATURE POLYMERIZATION OF THE SURFACE OF THE LAYER OF ENAMEL; AND THEN PASSING SAID WIRE THROUGH AN OVEN AT SAID POLYMERIZATION TEMPERATURE TO POLYMERIZE SAID ENAMEL LAYER THEREBY ENABLING HIGH-SPEED PRODUCTION OF THE ENAMELLED WIRE WHILE AVOIDING MICRO-CRACK FORMATION DUE TO EMISSION OF RESIDUAL SOLVENT THROUGH THE ENAMEL.