NOVELTY - The covering (16) has an end surface coating part for covering an outer periphery coating part that covers an outer peripheral surface of a coil i.e. conductor coil (14), which passes an intermediate insulating layer. An inner peripheral coating part (38B) covers an internal peripheral surface. The intermediate insulating layer is formed with thermoplastic resin (38A). An inner surface layer (38A-1) of a laminated structure passes through an end of the intermediate insulating layer. The intermediate insulating layer is integrally formed in an injection molding with the inner surface layer.    USE - Coil covering for a reactor and a choke coil for covering a conductor coil that winds a wire in a state, which interposes an insulating film between wires used in a hybrid vehicle, a fuel cell electric vehicle and an electric vehicle.    ADVANTAGE - The coil covers an end surface of an intermediate insulating layer when thermal load and mechanical load are added repeatedly such that need of carrying out joining peeling from the intersection coating parts can be avoided without impaired insulation performance of the intermediate insulating layer by spark discharge and corona discharge arising among the coil blocks, thus avoiding short-circuit problem. The covering allows a primary molding die to be made to contact internal and outer peripheral surfaces of the coil, while molding the primary molding die in a resin coating layer so as to prevent coil position-shifting or transforming.    DETAILED DESCRIPTION - The end surface coating part is an upper end surface coating part (38c). The outer periphery coating part is thermoplastic resin. The intermediate insulating layer is a circular shaped intermediate insulating layer (20). An INDEPENDENT CLAIM is also included for a manufacturing method for coil covering.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a reactor. '(Drawing includes non-English language text)'    Conductor coil (14)    Coil covering (16)    Circular shaped intermediate insulating layer (20)    Thermoplastic resin (38A)    Inner surface layers (38A-1, 38B-1, 38C-1, 38D-1)    Inner peripheral coating part (38B)    Upper end surface coating part (38c)