| 摘要 |
PURPOSE:To use an element to be sealed which needs electric insulation and rustproofness in a high humidity atmosphere or in an easily water-submerged state by so providing a thermoplastic resin containing a fibrous matter as to cover the entire element to be sealed by a compression molding method using molds. CONSTITUTION:A laminate 3 is introduced into a heating furnace, and heated to become 220 deg.C for 8min. In this case, since the laminate 3 is expanded by heating, an interval (h) between a heater 9 for heating and the laminate 3 is maintained at a predetermined interval. When heating of the laminate 3 is completed, the laminate 3 is immediately introduced into spigotlike molds for molding a resin molded form having 400X400X7mm of an inner size, and pressed under a pressure of 10kg/cm<2> at a mold temperature of 100 deg.C for one min to obtain a resin molded form in which an element to be sealed 2 is entirely covered with a sealer 1 made of polypropylene resin 1a containing a glass fiber 1b. |
