FLAT CABLE AND PRODUCTION METHOD THEREFOR

摘要

A flat cable that easily bends in a width direction and a production method for the flat cable are provided. A flat cable (FC) includes a plurality of conductors (10) extending in an axial direction, and an insulating sheath (20) that covers these conductors (10) in a state where the conductors (10) are lined up in the width direction. The insulating sheath (20) has an expansion portion (24). The expansion portion (24) expands in a thickness direction orthogonal to the axial direction and the width direction so as to separate from an outer circumferential face of each conductor (10) towards the outside, and thus an internal space permitting relative displacement between the conductors (10) is formed. This flat cable (FC) can be produced by arranging a die, having an inner face including a portion having a shape that expands to the outside in a radial direction, around the circumference of a flat cable material, and forming the expansion portion (24) having a shape following the inner face of the die by heating the insulating sheath (20) within the die and conferring a pressure difference between the inside and outside of the insulating sheath (20).