| 摘要 |
PURPOSE:To inexpensively manufacture an insulated coil which has preferably insulating characteristic with less voids by employing a ultrafine porous film as a sealing member of the coil. CONSTITUTION:A prepreg insulating tape is wound on a coil conductor 1 to form an insulating layer 2, a mold releasing tape is wound thereon to form a mold releasing layer 3. Two L-shaped side plates 4 are opposed at the periphery and contacted with each other, several positions of longitudinal direction are wound by an adhesive tape to temporarily clamp the plates 4. Then, a sealing member 5 is covered. The member 5 is an ultrafine porous Teflon film having numerous pores of the size of the degree that may pass gas, steam and solvent vapor molecules contained in the layer 3 but does not pass the heated liquid droplets such as heat-fusible asphalt compound liquid droplets. |
