Wiring harness manufacturing method

A wire harness manufacturing method for manufacturing a wire harness in which a predetermined part of a wire is covered with non-woven fabric of a thermoplastic material, comprising:

• a first step of covering a periphery of the wire with the non-woven fabric of the thermoplastic material, and heating the non-woven fabric of the thermoplastic material to a temperature at which plastic deformation by thermo plasticity is possible and pressurizing the non-woven fabric to mold the non-woven fabric to have predetermined cross-sectional shape and size;
• and
• a second step of, after the first step, while the non-woven fabric of the thermoplastic material has the temperature at which plastic deformation by thermo plasticity is possible, molding the thermoplastic material to have a predetermined axial shape, and cooling the thermoplastic material having the predetermined axial shape.