FLAT INSULATED WIRE AND ELECTRIC GENERATOR COIL

摘要

Provided is a flat insulated wire that maintains flexibility and resistance to thermal softening while improving bending resistance reliability by improving the adhesion between insulating layers and preventing the occurrence of cracks that reach a conductor, and that additionally exhibits excellent ATF resistance characteristics. The flat insulated wired (1) is provided with: a flat conductor (2) that has an approximately rectangular cross section; a thermosetting resin layer (3) that is formed to cover the flat conductor; a thermoplastic resin layer (4) that is formed to cover the thermosetting resin layer; and a thermoplastic resin layer (5) that is formed to cover the thermoplastic resin layer (4). The adhesion strength between the thermosetting resin layer (3) and the thermoplastic resin layer (4) and the adhesion strength between the thermoplastic resin layers (4) and (5) are respectively 50-100 gf/mm. The relative degree of crystallization in the thermoplastic resin layer (4) as calculated on the basis of the heat of fusion and the heat of crystallization measured by differential scanning calorimetry is 20-50%.