Patent ID: 6925703

Claim:
A method for producing a rectangular insulated wire, in which a rectangular conductor is coated with an insulating film, comprising the following steps: supplying an uninsulated round wire conductor to a rolling unit composed of at least one pair of rolling rolls that are capable of freely rotating without a drive mechanism so as to form rectangular conductor, annealing said rectangular conductor by routing said rectangular conductor through an annealing chamber as the conductor exits the rolling unit at the same speed as the conductor exits the rolling unit, coating said rectangular conductor with an insulating film by routing said rectangular conductor through a coating apparatus as the annealed conductor exits the annealing chamber at the same speed as the conductor exits the annealing chamber, and winding the thus-obtained rectangular insulated wire onto a storage apparatus as the coated conductor exits the coating apparatus at the same speed as the conductor exits the coating apparatus; wherein rectangular insulated wire is produced in a continuous manner from round uninsulated wire stock without interrupting the production process to store partially produced wire for a period of time prior to routing the wire to the next step in the production process.