Method for producing wound plastic film capacitor

A thermally-adhesive resin layer (6) is laminated on one side of each of plastic films (1a, 2a, 1b, 2b). The one sides are the same sides (that is, the front sides or the back sides) of the plastic films (1a to 2b). Metallic layers (3, 4) are formed on the opposite side of each of the plastic films (1a, 1b) opposite to the one side where the thermally-adhesive resin layer (6) is laminated. The laminate is wound and heated to form a wound plastic film capacitor. The films are not separated from each other even though impregnation with an epoxy resin is not performed, and hence void discharge due to film separation can be prevented. Since no epoxy resin is needed, the productivity is enhanced and the material cost is reduced. The dielectric breakdown voltage of such a wound plastic film capacitor is almost equivalent to that of conventional types in which impregnation with epoxy resin is carried out. Similar effects are produced when the front sides and back sides are interchanged.