MANUFACTURING METHOD OF POLYMER INSULATOR

PROBLEM TO BE SOLVED: To provide a manufacturing method of a polymer insulator, the entire length of which is not long, and where manufacturing can be made easy for a lower cost, with improved mechanical strength of the insulator, being capable of maintaining the insulation strength. SOLUTION: An organic insulating material, containing millable type silicon rubber compound, is molded with a predetermined length remained from both ends around the outer periphery of an insulating core material 3 of FRP rod, forming a primary covering insulator 5. Then, after a terminal hardware 7 is fitted to both ends of the insulating core material 3, the organic insulating material, containing liquid silicon rubber compound of cold vulcanized type, is molded around the outer periphery of a non-molded part 3a near both ends of the insulating core material 3 so as to bridge between the primary covering insulator 5 and the terminal hardware 7, thus forming a secondary covering insulator 9. COPYRIGHT: (C)2004,JPO&NCIPI