Composite Insulator and Its Manufacturing Method

摘要

A composite insulator includes a FRP core rod (11) and a sheath (12) formed by integrally molding an insulating polymeric material to cover the core rod over substantially the entire length thereof. The sheath is composed of a plurality of molded portions (12a,12b) aligned with each other in the axial direction of the core rod. Adjacent molded portions of the sheath are arranged relative to each other so that a gap is left between the opposite ends of the molded portions. The gap is filled by a joint insulating material (14) integrally united to the polymeric material of the adjacent molded portions.